diff options
| author | Peter Maydell <peter.maydell@linaro.org> | 2016-07-05 16:48:24 +0100 |
|---|---|---|
| committer | Peter Maydell <peter.maydell@linaro.org> | 2016-07-05 16:48:24 +0100 |
| commit | 791b7d2340cfafcac9af7864343cf23504d57804 (patch) | |
| tree | 5834c152f6881c3e907bfe64dd66bcfa83cf8369 | |
| parent | 60a0f1af07d685c88f4ffa09370da5bd7514823e (diff) | |
| parent | 269fe4c3ab0cf29329317eb868f8ec90ac761b41 (diff) | |
Merge remote-tracking branch 'remotes/mst/tags/for_upstream' into staging
pc, pci, virtio: new features, cleanups, fixes
iommus can not be added with -device.
cleanups and fixes all over the place
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
# gpg: Signature made Tue 05 Jul 2016 11:18:32 BST
# gpg: using RSA key 0x281F0DB8D28D5469
# gpg: Good signature from "Michael S. Tsirkin <mst@kernel.org>"
# gpg: aka "Michael S. Tsirkin <mst@redhat.com>"
# Primary key fingerprint: 0270 606B 6F3C DF3D 0B17 0970 C350 3912 AFBE 8E67
# Subkey fingerprint: 5D09 FD08 71C8 F85B 94CA 8A0D 281F 0DB8 D28D 5469
* remotes/mst/tags/for_upstream: (30 commits)
vmw_pvscsi: remove unnecessary internal msi state flag
e1000e: remove unnecessary internal msi state flag
vmxnet3: remove unnecessary internal msi state flag
mptsas: remove unnecessary internal msi state flag
megasas: remove unnecessary megasas_use_msi()
pci: Convert msi_init() to Error and fix callers to check it
pci bridge dev: change msi property type
megasas: change msi/msix property type
mptsas: change msi property type
intel-hda: change msi property type
usb xhci: change msi/msix property type
change pvscsi_init_msi() type to void
tests: add APIC.cphp and DSDT.cphp blobs
tests: acpi: add CPU hotplug testcase
log: Permit -dfilter 0..0xffffffffffffffff
range: Replace internal representation of Range
range: Eliminate direct Range member access
log: Clean up misuse of Range for -dfilter
pci_register_bar: cleanup
Revert "virtio-net: unbreak self announcement and guest offloads after migration"
...
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
48 files changed, 586 insertions, 401 deletions
diff --git a/hw/audio/intel-hda.c b/hw/audio/intel-hda.c index 098b17d020..cd95340cd9 100644 --- a/hw/audio/intel-hda.c +++ b/hw/audio/intel-hda.c @@ -191,7 +191,7 @@ struct IntelHDAState { /* properties */ uint32_t debug; - uint32_t msi; + OnOffAuto msi; bool old_msi_addr; }; @@ -256,7 +256,7 @@ static void intel_hda_update_int_sts(IntelHDAState *d) static void intel_hda_update_irq(IntelHDAState *d) { - int msi = d->msi && msi_enabled(&d->pci); + bool msi = msi_enabled(&d->pci); int level; intel_hda_update_int_sts(d); @@ -1132,6 +1132,8 @@ static void intel_hda_realize(PCIDevice *pci, Error **errp) { IntelHDAState *d = INTEL_HDA(pci); uint8_t *conf = d->pci.config; + Error *err = NULL; + int ret; d->name = object_get_typename(OBJECT(d)); @@ -1140,12 +1142,27 @@ static void intel_hda_realize(PCIDevice *pci, Error **errp) /* HDCTL off 0x40 bit 0 selects signaling mode (1-HDA, 0 - Ac97) 18.1.19 */ conf[0x40] = 0x01; + if (d->msi != ON_OFF_AUTO_OFF) { + ret = msi_init(&d->pci, d->old_msi_addr ? 0x50 : 0x60, + 1, true, false, &err); + /* Any error other than -ENOTSUP(board's MSI support is broken) + * is a programming error */ + assert(!ret || ret == -ENOTSUP); + if (ret && d->msi == ON_OFF_AUTO_ON) { + /* Can't satisfy user's explicit msi=on request, fail */ + error_append_hint(&err, "You have to use msi=auto (default) or " + "msi=off with this machine type.\n"); + error_propagate(errp, err); + return; + } + assert(!err || d->msi == ON_OFF_AUTO_AUTO); + /* With msi=auto, we fall back to MSI off silently */ + error_free(err); + } + memory_region_init_io(&d->mmio, OBJECT(d), &intel_hda_mmio_ops, d, "intel-hda", 0x4000); pci_register_bar(&d->pci, 0, 0, &d->mmio); - if (d->msi) { - msi_init(&d->pci, d->old_msi_addr ? 0x50 : 0x60, 1, true, false); - } hda_codec_bus_init(DEVICE(pci), &d->codecs, sizeof(d->codecs), intel_hda_response, intel_hda_xfer); @@ -1235,7 +1252,7 @@ static const VMStateDescription vmstate_intel_hda = { static Property intel_hda_properties[] = { DEFINE_PROP_UINT32("debug", IntelHDAState, debug, 0), - DEFINE_PROP_UINT32("msi", IntelHDAState, msi, 1), + DEFINE_PROP_ON_OFF_AUTO("msi", IntelHDAState, msi, ON_OFF_AUTO_AUTO), DEFINE_PROP_BOOL("old_msi_addr", IntelHDAState, old_msi_addr, false), DEFINE_PROP_END_OF_LIST(), }; diff --git a/hw/core/machine.c b/hw/core/machine.c index ccdd5fa3e7..8f943013e5 100644 --- a/hw/core/machine.c +++ b/hw/core/machine.c @@ -300,20 +300,6 @@ static void machine_set_firmware(Object *obj, const char *value, Error **errp) ms->firmware = g_strdup(value); } -static bool machine_get_iommu(Object *obj, Error **errp) -{ - MachineState *ms = MACHINE(obj); - - return ms->iommu; -} - -static void machine_set_iommu(Object *obj, bool value, Error **errp) -{ - MachineState *ms = MACHINE(obj); - - ms->iommu = value; -} - static void machine_set_suppress_vmdesc(Object *obj, bool value, Error **errp) { MachineState *ms = MACHINE(obj); @@ -493,12 +479,6 @@ static void machine_initfn(Object *obj) object_property_set_description(obj, "firmware", "Firmware image", NULL); - object_property_add_bool(obj, "iommu", - machine_get_iommu, - machine_set_iommu, NULL); - object_property_set_description(obj, "iommu", - "Set on/off to enable/disable Intel IOMMU (VT-d)", - NULL); object_property_add_bool(obj, "suppress-vmdesc", machine_get_suppress_vmdesc, machine_set_suppress_vmdesc, NULL); diff --git a/hw/i386/acpi-build.c b/hw/i386/acpi-build.c index 5a594be8ee..fbba461a87 100644 --- a/hw/i386/acpi-build.c +++ b/hw/i386/acpi-build.c @@ -229,26 +229,27 @@ static Object *acpi_get_i386_pci_host(void) return OBJECT(host); } -static void acpi_get_pci_info(PcPciInfo *info) +static void acpi_get_pci_holes(Range *hole, Range *hole64) { Object *pci_host; - pci_host = acpi_get_i386_pci_host(); g_assert(pci_host); - info->w32.begin = object_property_get_int(pci_host, + range_set_bounds1(hole, + object_property_get_int(pci_host, PCI_HOST_PROP_PCI_HOLE_START, - NULL); - info->w32.end = object_property_get_int(pci_host, - PCI_HOST_PROP_PCI_HOLE_END, - NULL); - info->w64.begin = object_property_get_int(pci_host, + NULL), + object_property_get_int(pci_host, + PCI_HOST_PROP_PCI_HOLE_END, + NULL)); + range_set_bounds1(hole64, + object_property_get_int(pci_host, PCI_HOST_PROP_PCI_HOLE64_START, - NULL); - info->w64.end = object_property_get_int(pci_host, - PCI_HOST_PROP_PCI_HOLE64_END, - NULL); + NULL), + object_property_get_int(pci_host, + PCI_HOST_PROP_PCI_HOLE64_END, + NULL)); } #define ACPI_PORT_SMI_CMD 0x00b2 /* TODO: this is APM_CNT_IOPORT */ @@ -1890,7 +1891,7 @@ static Aml *build_q35_osc_method(void) static void build_dsdt(GArray *table_data, BIOSLinker *linker, AcpiPmInfo *pm, AcpiMiscInfo *misc, - PcPciInfo *pci, MachineState *machine) + Range *pci_hole, Range *pci_hole64, MachineState *machine) { CrsRangeEntry *entry; Aml *dsdt, *sb_scope, *scope, *dev, *method, *field, *pkg, *crs; @@ -2047,7 +2048,9 @@ build_dsdt(GArray *table_data, BIOSLinker *linker, AML_CACHEABLE, AML_READ_WRITE, 0, 0x000A0000, 0x000BFFFF, 0, 0x00020000)); - crs_replace_with_free_ranges(mem_ranges, pci->w32.begin, pci->w32.end - 1); + crs_replace_with_free_ranges(mem_ranges, + range_lob(pci_hole), + range_upb(pci_hole)); for (i = 0; i < mem_ranges->len; i++) { entry = g_ptr_array_index(mem_ranges, i); aml_append(crs, @@ -2057,12 +2060,12 @@ build_dsdt(GArray *table_data, BIOSLinker *linker, 0, entry->limit - entry->base + 1)); } - if (pci->w64.begin) { + if (!range_is_empty(pci_hole64)) { aml_append(crs, aml_qword_memory(AML_POS_DECODE, AML_MIN_FIXED, AML_MAX_FIXED, AML_CACHEABLE, AML_READ_WRITE, - 0, pci->w64.begin, pci->w64.end - 1, 0, - pci->w64.end - pci->w64.begin)); + 0, range_lob(pci_hole64), range_upb(pci_hole64), 0, + range_upb(pci_hole64) + 1 - range_lob(pci_hole64))); } if (misc->tpm_version != TPM_VERSION_UNSPEC) { @@ -2554,7 +2557,7 @@ void acpi_build(AcpiBuildTables *tables, MachineState *machine) AcpiPmInfo pm; AcpiMiscInfo misc; AcpiMcfgInfo mcfg; - PcPciInfo pci; + Range pci_hole, pci_hole64; uint8_t *u; size_t aml_len = 0; GArray *tables_blob = tables->table_data; @@ -2562,7 +2565,7 @@ void acpi_build(AcpiBuildTables *tables, MachineState *machine) acpi_get_pm_info(&pm); acpi_get_misc_info(&misc); - acpi_get_pci_info(&pci); + acpi_get_pci_holes(&pci_hole, &pci_hole64); acpi_get_slic_oem(&slic_oem); table_offsets = g_array_new(false, true /* clear */, @@ -2584,7 +2587,8 @@ void acpi_build(AcpiBuildTables *tables, MachineState *machine) /* DSDT is pointed to by FADT */ dsdt = tables_blob->len; - build_dsdt(tables_blob, tables->linker, &pm, &misc, &pci, machine); + build_dsdt(tables_blob, tables->linker, &pm, &misc, + &pci_hole, &pci_hole64, machine); /* Count the size of the DSDT and SSDT, we will need it for legacy * sizing of ACPI tables. diff --git a/hw/i386/intel_iommu.c b/hw/i386/intel_iommu.c index 5eba704477..464f2a0518 100644 --- a/hw/i386/intel_iommu.c +++ b/hw/i386/intel_iommu.c @@ -25,6 +25,7 @@ #include "intel_iommu_internal.h" #include "hw/pci/pci.h" #include "hw/pci/pci_bus.h" +#include "hw/i386/pc.h" /*#define DEBUG_INTEL_IOMMU*/ #ifdef DEBUG_INTEL_IOMMU @@ -2026,8 +2027,20 @@ static void vtd_reset(DeviceState *dev) vtd_init(s); } +static AddressSpace *vtd_host_dma_iommu(PCIBus *bus, void *opaque, int devfn) +{ + IntelIOMMUState *s = opaque; + VTDAddressSpace *vtd_as; + + assert(0 <= devfn && devfn <= VTD_PCI_DEVFN_MAX); + + vtd_as = vtd_find_add_as(s, bus, devfn); + return &vtd_as->as; +} + static void vtd_realize(DeviceState *dev, Error **errp) { + PCIBus *bus = PC_MACHINE(qdev_get_machine())->bus; IntelIOMMUState *s = INTEL_IOMMU_DEVICE(dev); VTD_DPRINTF(GENERAL, ""); @@ -2041,6 +2054,8 @@ static void vtd_realize(DeviceState *dev, Error **errp) s->vtd_as_by_busptr = g_hash_table_new_full(vtd_uint64_hash, vtd_uint64_equal, g_free, g_free); vtd_init(s); + sysbus_mmio_map(SYS_BUS_DEVICE(s), 0, Q35_HOST_BRIDGE_IOMMU_ADDR); + pci_setup_iommu(bus, vtd_host_dma_iommu, dev); } static void vtd_class_init(ObjectClass *klass, void *data) @@ -2051,6 +2066,7 @@ static void vtd_class_init(ObjectClass *klass, void *data) dc->realize = vtd_realize; dc->vmsd = &vtd_vmstate; dc->props = vtd_properties; + dc->hotpluggable = false; } static const TypeInfo vtd_info = { diff --git a/hw/i386/pc.c b/hw/i386/pc.c index 44a8f3bcbd..cd1745ebaf 100644 --- a/hw/i386/pc.c +++ b/hw/i386/pc.c @@ -1919,7 +1919,7 @@ static void pc_machine_initfn(Object *obj) pc_machine_get_hotplug_memory_region_size, NULL, NULL, NULL, &error_abort); - pcms->max_ram_below_4g = 0xe0000000; /* 3.5G */ + pcms->max_ram_below_4g = 0; /* use default */ object_property_add(obj, PC_MACHINE_MAX_RAM_BELOW_4G, "size", pc_machine_get_max_ram_below_4g, pc_machine_set_max_ram_below_4g, diff --git a/hw/i386/pc_piix.c b/hw/i386/pc_piix.c index c7d70af253..a07dc816bf 100644 --- a/hw/i386/pc_piix.c +++ b/hw/i386/pc_piix.c @@ -108,37 +108,43 @@ static void pc_init1(MachineState *machine, * so legacy non-PAE guests can get as much memory as possible in * the 32bit address space below 4G. * + * - Note that Xen has its own ram setp code in xen_ram_init(), + * called via xen_hvm_init(). + * * Examples: * qemu -M pc-1.7 -m 4G (old default) -> 3584M low, 512M high * qemu -M pc -m 4G (new default) -> 3072M low, 1024M high * qemu -M pc,max-ram-below-4g=2G -m 4G -> 2048M low, 2048M high * qemu -M pc,max-ram-below-4g=4G -m 3968M -> 3968M low (=4G-128M) */ - lowmem = pcms->max_ram_below_4g; - if (machine->ram_size >= pcms->max_ram_below_4g) { - if (pcmc->gigabyte_align) { - if (lowmem > 0xc0000000) { - lowmem = 0xc0000000; - } - if (lowmem & ((1ULL << 30) - 1)) { - error_report("Warning: Large machine and max_ram_below_4g " - "(%" PRIu64 ") not a multiple of 1G; " - "possible bad performance.", - pcms->max_ram_below_4g); + if (xen_enabled()) { + xen_hvm_init(pcms, &ram_memory); + } else { + if (!pcms->max_ram_below_4g) { + pcms->max_ram_below_4g = 0xe0000000; /* default: 3.5G */ + } + lowmem = pcms->max_ram_below_4g; + if (machine->ram_size >= pcms->max_ram_below_4g) { + if (pcmc->gigabyte_align) { + if (lowmem > 0xc0000000) { + lowmem = 0xc0000000; + } + if (lowmem & ((1ULL << 30) - 1)) { + error_report("Warning: Large machine and max_ram_below_4g " + "(%" PRIu64 ") not a multiple of 1G; " + "possible bad performance.", + pcms->max_ram_below_4g); + } } } - } - if (machine->ram_size >= lowmem) { - pcms->above_4g_mem_size = machine->ram_size - lowmem; - pcms->below_4g_mem_size = lowmem; - } else { - pcms->above_4g_mem_size = 0; - pcms->below_4g_mem_size = machine->ram_size; - } - - if (xen_enabled()) { - xen_hvm_init(pcms, &ram_memory); + if (machine->ram_size >= lowmem) { + pcms->above_4g_mem_size = machine->ram_size - lowmem; + pcms->below_4g_mem_size = lowmem; + } else { + pcms->above_4g_mem_size = 0; + pcms->below_4g_mem_size = machine->ram_size; + } } pc_cpus_init(pcms); diff --git a/hw/i386/pc_q35.c b/hw/i386/pc_q35.c index 04b2684d37..c0b9961928 100644 --- a/hw/i386/pc_q35.c +++ b/hw/i386/pc_q35.c @@ -94,6 +94,9 @@ static void pc_q35_init(MachineState *machine) /* Handle the machine opt max-ram-below-4g. It is basically doing * min(qemu limit, user limit). */ + if (!pcms->max_ram_below_4g) { + pcms->max_ram_below_4g = 1ULL << 32; /* default: 4G */; + } if (lowmem > pcms->max_ram_below_4g) { lowmem = pcms->max_ram_below_4g; if (machine->ram_size - lowmem > lowmem && @@ -176,7 +179,6 @@ static void pc_q35_init(MachineState *machine) qdev_init_nofail(DEVICE(q35_host)); phb = PCI_HOST_BRIDGE(q35_host); host_bus = phb->bus; - pcms->bus = phb->bus; /* create ISA bus */ lpc = pci_create_simple_multifunction(host_bus, PCI_DEVFN(ICH9_LPC_DEV, ICH9_LPC_FUNC), true, @@ -287,6 +289,7 @@ static void pc_q35_machine_options(MachineClass *m) m->default_machine_opts = "firmware=bios-256k.bin"; m->default_display = "std"; m->no_floppy = 1; + m->has_dynamic_sysbus = true; } static void pc_q35_2_7_machine_options(MachineClass *m) diff --git a/hw/ide/ich.c b/hw/ide/ich.c index 0a13334baa..920ec276ed 100644 --- a/hw/ide/ich.c +++ b/hw/ide/ich.c @@ -68,7 +68,6 @@ #include <hw/isa/isa.h> #include "sysemu/block-backend.h" #include "sysemu/dma.h" - #include <hw/ide/pci.h> #include <hw/ide/ahci.h> @@ -111,6 +110,7 @@ static void pci_ich9_ahci_realize(PCIDevice *dev, Error **errp) int sata_cap_offset; uint8_t *sata_cap; d = ICH_AHCI(dev); + int ret; ahci_realize(&d->ahci, DEVICE(dev), pci_get_address_space(dev), 6); @@ -146,7 +146,10 @@ static void pci_ich9_ahci_realize(PCIDevice *dev, Error **errp) /* Although the AHCI 1.3 specification states that the first capability * should be PMCAP, the Intel ICH9 data sheet specifies that the ICH9 * AHCI device puts the MSI capability first, pointing to 0x80. */ - msi_init(dev, ICH9_MSI_CAP_OFFSET, 1, true, false); + ret = msi_init(dev, ICH9_MSI_CAP_OFFSET, 1, true, false, NULL); + /* Any error other than -ENOTSUP(board's MSI support is broken) + * is a programming error. Fall back to INTx silently on -ENOTSUP */ + assert(!ret || ret == -ENOTSUP); } static void pci_ich9_uninit(PCIDevice *dev) diff --git a/hw/net/e1000e.c b/hw/net/e1000e.c index 47787447cd..b4758bc441 100644 --- a/hw/net/e1000e.c +++ b/hw/net/e1000e.c @@ -89,8 +89,7 @@ typedef struct E1000EState { #define E1000E_MSIX_TABLE (0x0000) #define E1000E_MSIX_PBA (0x2000) -#define E1000E_USE_MSI BIT(0) -#define E1000E_USE_MSIX BIT(1) +#define E1000E_USE_MSIX BIT(0) static uint64_t e1000e_mmio_read(void *opaque, hwaddr addr, unsigned size) @@ -264,32 +263,6 @@ static void e1000e_core_realize(E1000EState *s) } static void -e1000e_init_msi(E1000EState *s) -{ - int res; - - res = msi_init(PCI_DEVICE(s), - 0xD0, /* MSI capability offset */ - 1, /* MAC MSI interrupts */ - true, /* 64-bit message addresses supported */ - false); /* Per vector mask supported */ - - if (res > 0) { - s->intr_state |= E1000E_USE_MSI; - } else { - trace_e1000e_msi_init_fail(res); - } -} - -static void -e1000e_cleanup_msi(E1000EState *s) -{ - if (s->intr_state & E1000E_USE_MSI) { - msi_uninit(PCI_DEVICE(s)); - } -} - -static void e1000e_unuse_msix_vectors(E1000EState *s, int num_vectors) { int i; @@ -444,6 +417,7 @@ static void e1000e_pci_realize(PCIDevice *pci_dev, Error **errp) static const uint16_t e1000e_dsn_offset = 0x140; E1000EState *s = E1000E(pci_dev); uint8_t *macaddr; + int ret; trace_e1000e_cb_pci_realize(); @@ -493,7 +467,10 @@ static void e1000e_pci_realize(PCIDevice *pci_dev, Error **errp) hw_error("Failed to initialize PCIe capability"); } - e1000e_init_msi(s); + ret = msi_init(PCI_DEVICE(s), 0xD0, 1, true, false, NULL); + if (ret) { + trace_e1000e_msi_init_fail(ret); + } if (e1000e_add_pm_capability(pci_dev, e1000e_pmrb_offset, PCI_PM_CAP_DSI) < 0) { @@ -532,7 +509,7 @@ static void e1000e_pci_uninit(PCIDevice *pci_dev) qemu_del_nic(s->nic); e1000e_cleanup_msix(s); - e1000e_cleanup_msi(s); + msi_uninit(pci_dev); } static void e1000e_qdev_reset(DeviceState *dev) diff --git a/hw/net/virtio-net.c b/hw/net/virtio-net.c index 7e6a60aa12..999989934e 100644 --- a/hw/net/virtio-net.c +++ b/hw/net/virtio-net.c @@ -1542,33 +1542,11 @@ static int virtio_net_load(QEMUFile *f, void *opaque, int version_id) { VirtIONet *n = opaque; VirtIODevice *vdev = VIRTIO_DEVICE(n); - int ret; if (version_id < 2 || version_id > VIRTIO_NET_VM_VERSION) return -EINVAL; - ret = virtio_load(vdev, f, version_id); - if (ret) { - return ret; - } - - if (virtio_vdev_has_feature(vdev, VIRTIO_NET_F_CTRL_GUEST_OFFLOADS)) { - n->curr_guest_offloads = qemu_get_be64(f); - } else { - n->curr_guest_offloads = virtio_net_supported_guest_offloads(n); - } - - if (peer_has_vnet_hdr(n)) { - virtio_net_apply_guest_offloads(n); - } - - if (virtio_vdev_has_feature(vdev, VIRTIO_NET_F_GUEST_ANNOUNCE) && - virtio_vdev_has_feature(vdev, VIRTIO_NET_F_CTRL_VQ)) { - n->announce_counter = SELF_ANNOUNCE_ROUNDS; - timer_mod(n->announce_timer, qemu_clock_get_ms(QEMU_CLOCK_VIRTUAL)); - } - - return 0; + return virtio_load(vdev, f, version_id); } static int virtio_net_load_device(VirtIODevice *vdev, QEMUFile *f, @@ -1665,6 +1643,16 @@ static int virtio_net_load_device(VirtIODevice *vdev, QEMUFile *f, } } + if (virtio_vdev_has_feature(vdev, VIRTIO_NET_F_CTRL_GUEST_OFFLOADS)) { + n->curr_guest_offloads = qemu_get_be64(f); + } else { + n->curr_guest_offloads = virtio_net_supported_guest_offloads(n); + } + + if (peer_has_vnet_hdr(n)) { + virtio_net_apply_guest_offloads(n); + } + virtio_net_set_queues(n); /* Find the first multicast entry in the saved MAC filter */ @@ -1682,6 +1670,12 @@ static int virtio_net_load_device(VirtIODevice *vdev, QEMUFile *f, qemu_get_subqueue(n->nic, i)->link_down = link_down; } + if (virtio_vdev_has_feature(vdev, VIRTIO_NET_F_GUEST_ANNOUNCE) && + virtio_vdev_has_feature(vdev, VIRTIO_NET_F_CTRL_VQ)) { + n->announce_counter = SELF_ANNOUNCE_ROUNDS; + timer_mod(n->announce_timer, qemu_clock_get_ms(QEMU_CLOCK_VIRTUAL)); + } + return 0; } diff --git a/hw/net/vmxnet3.c b/hw/net/vmxnet3.c index b8e3b25053..e767fc64b8 100644 --- a/hw/net/vmxnet3.c +++ b/hw/net/vmxnet3.c @@ -283,8 +283,6 @@ typedef struct { /* Whether MSI-X support was installed successfully */ bool msix_used; - /* Whether MSI support was installed successfully */ - bool msi_used; hwaddr drv_shmem; hwaddr temp_shared_guest_driver_memory; @@ -366,7 +364,7 @@ static bool _vmxnet3_assert_interrupt_line(VMXNET3State *s, uint32_t int_idx) msix_notify(d, int_idx); return false; } - if (s->msi_used && msi_enabled(d)) { + if (msi_enabled(d)) { VMW_IRPRN("Sending MSI notification for vector %u", int_idx); msi_notify(d, int_idx); return false; @@ -390,7 +388,7 @@ static void _vmxnet3_deassert_interrupt_line(VMXNET3State *s, int lidx) * This function should never be called for MSI(X) interrupts * because deassertion never required for message interrupts */ - assert(!s->msi_used || !msi_enabled(d)); + assert(!msi_enabled(d)); VMW_IRPRN("Deasserting line for interrupt %u", lidx); pci_irq_deassert(d); @@ -427,7 +425,7 @@ static void vmxnet3_trigger_interrupt(VMXNET3State *s, int lidx) goto do_automask; } - if (s->msi_used && msi_enabled(d) && s->auto_int_masking) { + if (msi_enabled(d) && s->auto_int_masking) { goto do_automask; } @@ -1425,8 +1423,8 @@ static void vmxnet3_update_features(VMXNET3State *s) static bool vmxnet3_verify_intx(VMXNET3State *s, int intx) { - return s->msix_used || s->msi_used || (intx == - (pci_get_byte(s->parent_obj.config + PCI_INTERRUPT_PIN) - 1)); + return s->msix_used || msi_enabled(PCI_DEVICE(s)) + || intx == pci_get_byte(s->parent_obj.config + PCI_INTERRUPT_PIN) - 1; } static void vmxnet3_validate_interrupt_idx(bool is_msix, int idx) @@ -2216,35 +2214,12 @@ vmxnet3_cleanup_msix(VMXNET3State *s) } } -#define VMXNET3_USE_64BIT (true) -#define VMXNET3_PER_VECTOR_MASK (false) - -static bool -vmxnet3_init_msi(VMXNET3State *s) -{ - PCIDevice *d = PCI_DEVICE(s); - int res; - - res = msi_init(d, VMXNET3_MSI_OFFSET(s), VMXNET3_MAX_NMSIX_INTRS, - VMXNET3_USE_64BIT, VMXNET3_PER_VECTOR_MASK); - if (0 > res) { - VMW_WRPRN("Failed to initialize MSI, error %d", res); - s->msi_used = false; - } else { - s->msi_used = true; - } - - return s->msi_used; -} - static void vmxnet3_cleanup_msi(VMXNET3State *s) { PCIDevice *d = PCI_DEVICE(s); - if (s->msi_used) { - msi_uninit(d); - } + msi_uninit(d); } static void @@ -2298,10 +2273,15 @@ static uint64_t vmxnet3_device_serial_num(VMXNET3State *s) return dsn_payload; } + +#define VMXNET3_USE_64BIT (true) +#define VMXNET3_PER_VECTOR_MASK (false) + static void vmxnet3_pci_realize(PCIDevice *pci_dev, Error **errp) { DeviceState *dev = DEVICE(pci_dev); VMXNET3State *s = VMXNET3(pci_dev); + int ret; VMW_CBPRN("Starting init..."); @@ -2325,14 +2305,16 @@ static void vmxnet3_pci_realize(PCIDevice *pci_dev, Error **errp) /* Interrupt pin A */ pci_dev->config[PCI_INTERRUPT_PIN] = 0x01; + ret = msi_init(pci_dev, VMXNET3_MSI_OFFSET(s), VMXNET3_MAX_NMSIX_INTRS, + VMXNET3_USE_64BIT, VMXNET3_PER_VECTOR_MASK, NULL); + /* Any error other than -ENOTSUP(board's MSI support is broken) + * is a programming error. Fall back to INTx silently on -ENOTSUP */ + assert(!ret || ret == -ENOTSUP); + if (!vmxnet3_init_msix(s)) { VMW_WRPRN("Failed to initialize MSI-X, configuration is inconsistent."); } - if (!vmxnet3_init_msi(s)) { - VMW_WRPRN("Failed to initialize MSI, configuration is inconsistent."); - } - vmxnet3_net_init(s); if (pci_is_express(pci_dev)) { diff --git a/hw/pci-bridge/ioh3420.c b/hw/pci-bridge/ioh3420.c index b4a7806e2e..93c6f0b7a2 100644 --- a/hw/pci-bridge/ioh3420.c +++ b/hw/pci-bridge/ioh3420.c @@ -25,6 +25,7 @@ #include "hw/pci/msi.h" #include "hw/pci/pcie.h" #include "ioh3420.h" +#include "qapi/error.h" #define PCI_DEVICE_ID_IOH_EPORT 0x3420 /* D0:F0 express mode */ #define PCI_DEVICE_ID_IOH_REV 0x2 @@ -97,6 +98,7 @@ static int ioh3420_initfn(PCIDevice *d) PCIEPort *p = PCIE_PORT(d); PCIESlot *s = PCIE_SLOT(d); int rc; + Error *err = NULL; pci_bridge_initfn(d, TYPE_PCIE_BUS); pcie_port_init_reg(d); @@ -109,8 +111,10 @@ static int ioh3420_initfn(PCIDevice *d) rc = msi_init(d, IOH_EP_MSI_OFFSET, IOH_EP_MSI_NR_VECTOR, IOH_EP_MSI_SUPPORTED_FLAGS & PCI_MSI_FLAGS_64BIT, - IOH_EP_MSI_SUPPORTED_FLAGS & PCI_MSI_FLAGS_MASKBIT); + IOH_EP_MSI_SUPPORTED_FLAGS & PCI_MSI_FLAGS_MASKBIT, &err); if (rc < 0) { + assert(rc == -ENOTSUP); + error_report_err(err); goto err_bridge; } diff --git a/hw/pci-bridge/pci_bridge_dev.c b/hw/pci-bridge/pci_bridge_dev.c index 41ca47b15a..5dbd933cc1 100644 --- a/hw/pci-bridge/pci_bridge_dev.c +++ b/hw/pci-bridge/pci_bridge_dev.c @@ -42,9 +42,10 @@ struct PCIBridgeDev { MemoryRegion bar; uint8_t chassis_nr; -#define PCI_BRIDGE_DEV_F_MSI_REQ 0 -#define PCI_BRIDGE_DEV_F_SHPC_REQ 1 +#define PCI_BRIDGE_DEV_F_SHPC_REQ 0 uint32_t flags; + + OnOffAuto msi; }; typedef struct PCIBridgeDev PCIBridgeDev; @@ -53,6 +54,7 @@ static int pci_bridge_dev_initfn(PCIDevice *dev) PCIBridge *br = PCI_BRIDGE(dev); PCIBridgeDev *bridge_dev = PCI_BRIDGE_DEV(dev); int err; + Error *local_err = NULL; pci_bridge_initfn(dev, TYPE_PCI_BUS); @@ -66,7 +68,7 @@ static int pci_bridge_dev_initfn(PCIDevice *dev) } } else { /* MSI is not applicable without SHPC */ - bridge_dev->flags &= ~(1 << PCI_BRIDGE_DEV_F_MSI_REQ); + bridge_dev->msi = ON_OFF_AUTO_OFF; } err = slotid_cap_init(dev, 0, bridge_dev->chassis_nr, 0); @@ -74,12 +76,23 @@ static int pci_bridge_dev_initfn(PCIDevice *dev) goto slotid_error; } - if ((bridge_dev->flags & (1 << PCI_BRIDGE_DEV_F_MSI_REQ)) && - msi_nonbroken) { - err = msi_init(dev, 0, 1, true, true); - if (err < 0) { + if (bridge_dev->msi != ON_OFF_AUTO_OFF) { + /* it means SHPC exists, because MSI is needed by SHPC */ + + err = msi_init(dev, 0, 1, true, true, &local_err); + /* Any error other than -ENOTSUP(board's MSI support is broken) + * is a programming error */ + assert(!err || err == -ENOTSUP); + if (err && bridge_dev->msi == ON_OFF_AUTO_ON) { + /* Can't satisfy user's explicit msi=on request, fail */ + error_append_hint(&local_err, "You have to use msi=auto (default) " + "or msi=off with this machine type.\n"); + error_report_err(local_err); goto msi_error; } + assert(!local_err || bridge_dev->msi == ON_OFF_AUTO_AUTO); + /* With msi=auto, we fall back to MSI off silently */ + error_free(local_err); } if (shpc_present(dev)) { @@ -147,8 +160,8 @@ static Property pci_bridge_dev_properties[] = { /* Note: 0 is not a legal chassis number. */ DEFINE_PROP_UINT8(PCI_BRIDGE_DEV_PROP_CHASSIS_NR, PCIBridgeDev, chassis_nr, 0), - DEFINE_PROP_BIT(PCI_BRIDGE_DEV_PROP_MSI, PCIBridgeDev, flags, - PCI_BRIDGE_DEV_F_MSI_REQ, true), + DEFINE_PROP_ON_OFF_AUTO(PCI_BRIDGE_DEV_PROP_MSI, PCIBridgeDev, msi, + ON_OFF_AUTO_AUTO), DEFINE_PROP_BIT(PCI_BRIDGE_DEV_PROP_SHPC, PCIBridgeDev, flags, PCI_BRIDGE_DEV_F_SHPC_REQ, true), DEFINE_PROP_END_OF_LIST(), diff --git a/hw/pci-bridge/pci_expander_bridge.c b/hw/pci-bridge/pci_expander_bridge.c index ba320bd857..ab8612158d 100644 --- a/hw/pci-bridge/pci_expander_bridge.c +++ b/hw/pci-bridge/pci_expander_bridge.c @@ -149,6 +149,8 @@ static void pxb_host_class_init(ObjectClass *class, void *data) PCIHostBridgeClass *hc = PCI_HOST_BRIDGE_CLASS(class); dc->fw_name = "pci"; + /* Reason: Internal part of the pxb/pxb-pcie device, not usable by itself */ + dc->cannot_instantiate_with_device_add_yet = true; sbc->explicit_ofw_unit_address = pxb_host_ofw_unit_address; hc->root_bus_path = pxb_host_root_bus_path; } diff --git a/hw/pci-bridge/xio3130_downstream.c b/hw/pci-bridge/xio3130_downstream.c index e6d653de4f..f6149a302d 100644 --- a/hw/pci-bridge/xio3130_downstream.c +++ b/hw/pci-bridge/xio3130_downstream.c @@ -24,6 +24,7 @@ #include "hw/pci/msi.h" #include "hw/pci/pcie.h" #include "xio3130_downstream.h" +#include "qapi/error.h" #define PCI_DEVICE_ID_TI_XIO3130D 0x8233 /* downstream port */ #define XIO3130_REVISION 0x1 @@ -60,14 +61,17 @@ static int xio3130_downstream_initfn(PCIDevice *d) PCIEPort *p = PCIE_PORT(d); PCIESlot *s = PCIE_SLOT(d); int rc; + Error *err = NULL; pci_bridge_initfn(d, TYPE_PCIE_BUS); pcie_port_init_reg(d); rc = msi_init(d, XIO3130_MSI_OFFSET, XIO3130_MSI_NR_VECTOR, XIO3130_MSI_SUPPORTED_FLAGS & PCI_MSI_FLAGS_64BIT, - XIO3130_MSI_SUPPORTED_FLAGS & PCI_MSI_FLAGS_MASKBIT); + XIO3130_MSI_SUPPORTED_FLAGS & PCI_MSI_FLAGS_MASKBIT, &err); if (rc < 0) { + assert(rc == -ENOTSUP); + error_report_err(err); goto err_bridge; } diff --git a/hw/pci-bridge/xio3130_upstream.c b/hw/pci-bridge/xio3130_upstream.c index d97684474f..487edacc1d 100644 --- a/hw/pci-bridge/xio3130_upstream.c +++ b/hw/pci-bridge/xio3130_upstream.c @@ -24,6 +24,7 @@ #include "hw/pci/msi.h" #include "hw/pci/pcie.h" #include "xio3130_upstream.h" +#include "qapi/error.h" #define PCI_DEVICE_ID_TI_XIO3130U 0x8232 /* upstream port */ #define XIO3130_REVISION 0x2 @@ -56,14 +57,17 @@ static int xio3130_upstream_initfn(PCIDevice *d) { PCIEPort *p = PCIE_PORT(d); int rc; + Error *err = NULL; pci_bridge_initfn(d, TYPE_PCIE_BUS); pcie_port_init_reg(d); rc = msi_init(d, XIO3130_MSI_OFFSET, XIO3130_MSI_NR_VECTOR, XIO3130_MSI_SUPPORTED_FLAGS & PCI_MSI_FLAGS_64BIT, - XIO3130_MSI_SUPPORTED_FLAGS & PCI_MSI_FLAGS_MASKBIT); + XIO3130_MSI_SUPPORTED_FLAGS & PCI_MSI_FLAGS_MASKBIT, &err); if (rc < 0) { + assert(rc == -ENOTSUP); + error_report_err(err); goto err_bridge; } diff --git a/hw/pci-host/piix.c b/hw/pci-host/piix.c index df2b0e26f5..f9218aa952 100644 --- a/hw/pci-host/piix.c +++ b/hw/pci-host/piix.c @@ -48,7 +48,7 @@ typedef struct I440FXState { PCIHostState parent_obj; - PcPciInfo pci_info; + Range pci_hole; uint64_t pci_hole64_size; uint32_t short_root_bus; } I440FXState; @@ -221,8 +221,12 @@ static void i440fx_pcihost_get_pci_hole_start(Object *obj, Visitor *v, Error **errp) { I440FXState *s = I440FX_PCI_HOST_BRIDGE(obj); - uint32_t value = s->pci_info.w32.begin; + uint64_t val64; + uint32_t value; + val64 = range_is_empty(&s->pci_hole) ? 0 : range_lob(&s->pci_hole); + value = val64; + assert(value == val64); visit_type_uint32(v, name, &value, errp); } @@ -231,8 +235,12 @@ static void i440fx_pcihost_get_pci_hole_end(Object *obj, Visitor *v, Error **errp) { I440FXState *s = I440FX_PCI_HOST_BRIDGE(obj); - uint32_t value = s->pci_info.w32.end; + uint64_t val64; + uint32_t value; + val64 = range_is_empty(&s->pci_hole) ? 0 : range_upb(&s->pci_hole) + 1; + value = val64; + assert(value == val64); visit_type_uint32(v, name, &value, errp); } @@ -242,10 +250,11 @@ static void i440fx_pcihost_get_pci_hole64_start(Object *obj, Visitor *v, { PCIHostState *h = PCI_HOST_BRIDGE(obj); Range w64; + uint64_t value; pci_bus_get_w64_range(h->bus, &w64); - - visit_type_uint64(v, name, &w64.begin, errp); + value = range_is_empty(&w64) ? 0 : range_lob(&w64); + visit_type_uint64(v, name, &value, errp); } static void i440fx_pcihost_get_pci_hole64_end(Object *obj, Visitor *v, @@ -254,16 +263,16 @@ static void i440fx_pcihost_get_pci_hole64_end(Object *obj, Visitor *v, { PCIHostState *h = PCI_HOST_BRIDGE(obj); Range w64; + uint64_t value; pci_bus_get_w64_range(h->bus, &w64); - - visit_type_uint64(v, name, &w64.end, errp); + value = range_is_empty(&w64) ? 0 : range_upb(&w64) + 1; + visit_type_uint64(v, name, &value, errp); } static void i440fx_pcihost_initfn(Object *obj) { PCIHostState *s = PCI_HOST_BRIDGE(obj); - I440FXState *d = I440FX_PCI_HOST_BRIDGE(obj); memory_region_init_io(&s->conf_mem, obj, &pci_host_conf_le_ops, s, "pci-conf-idx", 4); @@ -285,8 +294,6 @@ static void i440fx_pcihost_initfn(Object *obj) object_property_add(obj, PCI_HOST_PROP_PCI_HOLE64_END, "int", i440fx_pcihost_get_pci_hole64_end, NULL, NULL, NULL, NULL); - - d->pci_info.w32.end = IO_APIC_DEFAULT_ADDRESS; } static void i440fx_pcihost_realize(DeviceState *dev, Error **errp) @@ -347,7 +354,8 @@ PCIBus *i440fx_init(const char *host_type, const char *pci_type, f->ram_memory = ram_memory; i440fx = I440FX_PCI_HOST_BRIDGE(dev); - i440fx->pci_info.w32.begin = below_4g_mem_size; + range_set_bounds(&i440fx->pci_hole, below_4g_mem_size, + IO_APIC_DEFAULT_ADDRESS - 1); /* setup pci memory mapping */ pc_pci_as_mapping_init(OBJECT(f), f->system_memory, @@ -865,6 +873,8 @@ static void i440fx_pcihost_class_init(ObjectClass *klass, void *data) dc->realize = i440fx_pcihost_realize; dc->fw_name = "pci"; dc->props = i440fx_props; + /* Reason: needs to be wired up by pc_init1 */ + dc->cannot_instantiate_with_device_add_yet = true; } static const TypeInfo i440fx_pcihost_info = { diff --git a/hw/pci-host/q35.c b/hw/pci-host/q35.c index 03be05dc0d..344f77b10c 100644 --- a/hw/pci-host/q35.c +++ b/hw/pci-host/q35.c @@ -52,6 +52,7 @@ static void q35_host_realize(DeviceState *dev, Error **errp) pci->bus = pci_bus_new(DEVICE(s), "pcie.0", s->mch.pci_address_space, s->mch.address_space_io, 0, TYPE_PCIE_BUS); + PC_MACHINE(qdev_get_machine())->bus = pci->bus; qdev_set_parent_bus(DEVICE(&s->mch), BUS(pci->bus)); qdev_init_nofail(DEVICE(&s->mch)); } @@ -73,8 +74,13 @@ static void q35_host_get_pci_hole_start(Object *obj, Visitor *v, Error **errp) { Q35PCIHost *s = Q35_HOST_DEVICE(obj); - uint32_t value = s->mch.pci_info.w32.begin; + uint64_t val64; + uint32_t value; + val64 = range_is_empty(&s->mch.pci_hole) + ? 0 : range_lob(&s->mch.pci_hole); + value = val64; + assert(value == val64); visit_type_uint32(v, name, &value, errp); } @@ -83,8 +89,13 @@ static void q35_host_get_pci_hole_end(Object *obj, Visitor *v, Error **errp) { Q35PCIHost *s = Q35_HOST_DEVICE(obj); - uint32_t value = s->mch.pci_info.w32.end; + uint64_t val64; + uint32_t value; + val64 = range_is_empty(&s->mch.pci_hole) + ? 0 : range_upb(&s->mch.pci_hole) + 1; + value = val64; + assert(value == val64); visit_type_uint32(v, name, &value, errp); } @@ -94,10 +105,11 @@ static void q35_host_get_pci_hole64_start(Object *obj, Visitor *v, { PCIHostState *h = PCI_HOST_BRIDGE(obj); Range w64; + uint64_t value; pci_bus_get_w64_range(h->bus, &w64); - - visit_type_uint64(v, name, &w64.begin, errp); + value = range_is_empty(&w64) ? 0 : range_lob(&w64); + visit_type_uint64(v, name, &value, errp); } static void q35_host_get_pci_hole64_end(Object *obj, Visitor *v, @@ -106,10 +118,11 @@ static void q35_host_get_pci_hole64_end(Object *obj, Visitor *v, { PCIHostState *h = PCI_HOST_BRIDGE(obj); Range w64; + uint64_t value; pci_bus_get_w64_range(h->bus, &w64); - - visit_type_uint64(v, name, &w64.end, errp); + value = range_is_empty(&w64) ? 0 : range_upb(&w64) + 1; + visit_type_uint64(v, name, &value, errp); } static void q35_host_get_mmcfg_size(Object *obj, Visitor *v, const char *name, @@ -142,6 +155,8 @@ static void q35_host_class_init(ObjectClass *klass, void *data) hc->root_bus_path = q35_host_root_bus_path; dc->realize = q35_host_realize; dc->props = mch_props; + /* Reason: needs to be wired up by pc_q35_init */ + dc->cannot_instantiate_with_device_add_yet = true; set_bit(DEVICE_CATEGORY_BRIDGE, dc->categories); dc->fw_name = "pci"; } @@ -202,9 +217,9 @@ static void q35_host_initfn(Object *obj) * it's not a power of two, which means an MTRR * can't cover it exactly. */ - s->mch.pci_info.w32.begin = MCH_HOST_BRIDGE_PCIEXBAR_DEFAULT + - MCH_HOST_BRIDGE_PCIEXBAR_MAX; - s->mch.pci_info.w32.end = IO_APIC_DEFAULT_ADDRESS; + range_set_bounds(&s->mch.pci_hole, + MCH_HOST_BRIDGE_PCIEXBAR_DEFAULT + MCH_HOST_BRIDGE_PCIEXBAR_MAX, + IO_APIC_DEFAULT_ADDRESS - 1); } static const TypeInfo q35_host_info = { @@ -272,10 +287,7 @@ static void mch_update_pciexbar(MCHPCIState *mch) break; case MCH_HOST_BRIDGE_PCIEXBAR_LENGTH_RVD: default: - enable = 0; - length = 0; abort(); - break; } addr = pciexbar & addr_mask; pcie_host_mmcfg_update(pehb, enable, addr, length); @@ -285,9 +297,13 @@ static void mch_update_pciexbar(MCHPCIState *mch) * which means an MTRR can't cover it exactly. */ if (enable) { - mch->pci_info.w32.begin = addr + length; + range_set_bounds(&mch->pci_hole, + addr + length, + IO_APIC_DEFAULT_ADDRESS - 1); } else { - mch->pci_info.w32.begin = MCH_HOST_BRIDGE_PCIEXBAR_DEFAULT; + range_set_bounds(&mch->pci_hole, + MCH_HOST_BRIDGE_PCIEXBAR_DEFAULT, + IO_APIC_DEFAULT_ADDRESS - 1); } } @@ -444,30 +460,6 @@ static void mch_reset(DeviceState *qdev) mch_update(mch); } -static AddressSpace *q35_host_dma_iommu(PCIBus *bus, void *opaque, int devfn) -{ - IntelIOMMUState *s = opaque; - VTDAddressSpace *vtd_as; - - assert(0 <= devfn && devfn <= VTD_PCI_DEVFN_MAX); - - vtd_as = vtd_find_add_as(s, bus, devfn); - return &vtd_as->as; -} - -static void mch_init_dmar(MCHPCIState *mch) -{ - PCIBus *pci_bus = PCI_BUS(qdev_get_parent_bus(DEVICE(mch))); - - mch->iommu = INTEL_IOMMU_DEVICE(qdev_create(NULL, TYPE_INTEL_IOMMU_DEVICE)); - object_property_add_child(OBJECT(mch), "intel-iommu", - OBJECT(mch->iommu), NULL); - qdev_init_nofail(DEVICE(mch->iommu)); - sysbus_mmio_map(SYS_BUS_DEVICE(mch->iommu), 0, Q35_HOST_BRIDGE_IOMMU_ADDR); - - pci_setup_iommu(pci_bus, q35_host_dma_iommu, mch->iommu); -} - static void mch_realize(PCIDevice *d, Error **errp) { int i; @@ -526,10 +518,6 @@ static void mch_realize(PCIDevice *d, Error **errp) mch->pci_address_space, &mch->pam_regions[i+1], PAM_EXPAN_BASE + i * PAM_EXPAN_SIZE, PAM_EXPAN_SIZE); } - /* Intel IOMMU (VT-d) */ - if (object_property_get_bool(qdev_get_machine(), "iommu", NULL)) { - mch_init_dmar(mch); - } } uint64_t mch_mcfg_base(void) diff --git a/hw/pci/msi.c b/hw/pci/msi.c index ed792251dd..a87b2278a3 100644 --- a/hw/pci/msi.c +++ b/hw/pci/msi.c @@ -22,6 +22,7 @@ #include "hw/pci/msi.h" #include "hw/xen/xen.h" #include "qemu/range.h" +#include "qapi/error.h" /* PCI_MSI_ADDRESS_LO */ #define PCI_MSI_ADDRESS_LO_MASK (~0x3) @@ -173,7 +174,8 @@ bool msi_enabled(const PCIDevice *dev) * If @msi64bit, make the device capable of sending a 64-bit message * address. * If @msi_per_vector_mask, make the device support per-vector masking. - * Return 0 on success, return -errno on error. + * @errp is for returning errors. + * Return 0 on success; set @errp and return -errno on error. * * -ENOTSUP means lacking msi support for a msi-capable platform. * -EINVAL means capability overlap, happens when @offset is non-zero, @@ -181,7 +183,8 @@ bool msi_enabled(const PCIDevice *dev) * if a real HW is broken. */ int msi_init(struct PCIDevice *dev, uint8_t offset, - unsigned int nr_vectors, bool msi64bit, bool msi_per_vector_mask) + unsigned int nr_vectors, bool msi64bit, + bool msi_per_vector_mask, Error **errp) { unsigned int vectors_order; uint16_t flags; @@ -189,6 +192,7 @@ int msi_init(struct PCIDevice *dev, uint8_t offset, int config_offset; if (!msi_nonbroken) { + error_setg(errp, "MSI is not supported by interrupt controller"); return -ENOTSUP; } @@ -212,7 +216,8 @@ int msi_init(struct PCIDevice *dev, uint8_t offset, } cap_size = msi_cap_sizeof(flags); - config_offset = pci_add_capability(dev, PCI_CAP_ID_MSI, offset, cap_size); + config_offset = pci_add_capability2(dev, PCI_CAP_ID_MSI, offset, + cap_size, errp); if (config_offset < 0) { return config_offset; } diff --git a/hw/pci/pci.c b/hw/pci/pci.c index 4b585f47b6..149994b815 100644 --- a/hw/pci/pci.c +++ b/hw/pci/pci.c @@ -78,10 +78,37 @@ static const VMStateDescription vmstate_pcibus = { } }; +static void pci_init_bus_master(PCIDevice *pci_dev) +{ + AddressSpace *dma_as = pci_device_iommu_address_space(pci_dev); + + memory_region_init_alias(&pci_dev->bus_master_enable_region, + OBJECT(pci_dev), "bus master", + dma_as->root, 0, memory_region_size(dma_as->root)); + memory_region_set_enabled(&pci_dev->bus_master_enable_region, false); + address_space_init(&pci_dev->bus_master_as, + &pci_dev->bus_master_enable_region, pci_dev->name); +} + +static void pcibus_machine_done(Notifier *notifier, void *data) +{ + PCIBus *bus = container_of(notifier, PCIBus, machine_done); + int i; + + for (i = 0; i < ARRAY_SIZE(bus->devices); ++i) { + if (bus->devices[i]) { + pci_init_bus_master(bus->devices[i]); + } + } +} + static void pci_bus_realize(BusState *qbus, Error **errp) { PCIBus *bus = PCI_BUS(qbus); + bus->machine_done.notify = pcibus_machine_done; + qemu_add_machine_init_done_notifier(&bus->machine_done); + vmstate_register(NULL, -1, &vmstate_pcibus, bus); } @@ -89,6 +116,8 @@ static void pci_bus_unrealize(BusState *qbus, Error **errp) { PCIBus *bus = PCI_BUS(qbus); + qemu_remove_machine_init_done_notifier(&bus->machine_done); + vmstate_unregister(NULL, &vmstate_pcibus, bus); } @@ -920,7 +949,6 @@ static PCIDevice *do_pci_register_device(PCIDevice *pci_dev, PCIBus *bus, PCIConfigReadFunc *config_read = pc->config_read; PCIConfigWriteFunc *config_write = pc->config_write; Error *local_err = NULL; - AddressSpace *dma_as; DeviceState *dev = DEVICE(pci_dev); pci_dev->bus = bus; @@ -961,15 +989,10 @@ static PCIDevice *do_pci_register_device(PCIDevice *pci_dev, PCIBus *bus, pci_dev->devfn = devfn; pci_dev->requester_id_cache = pci_req_id_cache_get(pci_dev); - dma_as = pci_device_iommu_address_space(pci_dev); - - memory_region_init_alias(&pci_dev->bus_master_enable_region, - OBJECT(pci_dev), "bus master", - dma_as->root, 0, memory_region_size(dma_as->root)); - memory_region_set_enabled(&pci_dev->bus_master_enable_region, false); - address_space_init(&pci_dev->bus_master_as, &pci_dev->bus_master_enable_region, - name); + if (qdev_hotplug) { + pci_init_bus_master(pci_dev); + } pstrcpy(pci_dev->name, sizeof(pci_dev->name), name); pci_dev->irq_state = 0; pci_config_alloc(pci_dev); @@ -1051,7 +1074,7 @@ void pci_register_bar(PCIDevice *pci_dev, int region_num, uint8_t type, MemoryRegion *memory) { PCIIORegion *r; - uint32_t addr; + uint32_t addr; /* offset in pci config space */ uint64_t wmask; pcibus_t size = memory_region_size(memory); @@ -1067,15 +1090,20 @@ void pci_register_bar(PCIDevice *pci_dev, int region_num, r->addr = PCI_BAR_UNMAPPED; r->size = size; r->type = type; - r->memory = NULL; + r->memory = memory; + r->address_space = type & PCI_BASE_ADDRESS_SPACE_IO + ? pci_dev->bus->address_space_io + : pci_dev->bus->address_space_mem; wmask = ~(size - 1); - addr = pci_bar(pci_dev, region_num); if (region_num == PCI_ROM_SLOT) { /* ROM enable bit is writable */ wmask |= PCI_ROM_ADDRESS_ENABLE; } + + addr = pci_bar(pci_dev, region_num); pci_set_long(pci_dev->config + addr, type); + if (!(r->type & PCI_BASE_ADDRESS_SPACE_IO) && r->type & PCI_BASE_ADDRESS_MEM_TYPE_64) { pci_set_quad(pci_dev->wmask + addr, wmask); @@ -1084,11 +1112,6 @@ void pci_register_bar(PCIDevice *pci_dev, int region_num, pci_set_long(pci_dev->wmask + addr, wmask & 0xffffffff); pci_set_long(pci_dev->cmask + addr, 0xffffffff); } - pci_dev->io_regions[region_num].memory = memory; - pci_dev->io_regions[region_num].address_space - = type & PCI_BASE_ADDRESS_SPACE_IO - ? pci_dev->bus->address_space_io - : pci_dev->bus->address_space_mem; } static void pci_update_vga(PCIDevice *pci_dev) @@ -2510,13 +2533,13 @@ static void pci_dev_get_w64(PCIBus *b, PCIDevice *dev, void *opaque) if (limit >= base) { Range pref_range; - pref_range.begin = base; - pref_range.end = limit + 1; + range_set_bounds(&pref_range, base, limit); range_extend(range, &pref_range); } } for (i = 0; i < PCI_NUM_REGIONS; ++i) { PCIIORegion *r = &dev->io_regions[i]; + pcibus_t lob, upb; Range region_range; if (!r->size || @@ -2524,16 +2547,17 @@ static void pci_dev_get_w64(PCIBus *b, PCIDevice *dev, void *opaque) !(r->type & PCI_BASE_ADDRESS_MEM_TYPE_64)) { continue; } - region_range.begin = pci_bar_address(dev, i, r->type, r->size); - region_range.end = region_range.begin + r->size; - if (region_range.begin == PCI_BAR_UNMAPPED) { + lob = pci_bar_address(dev, i, r->type, r->size); + upb = lob + r->size - 1; + if (lob == PCI_BAR_UNMAPPED) { continue; } - region_range.begin = MAX(region_range.begin, 0x1ULL << 32); + lob = MAX(lob, 0x1ULL << 32); - if (region_range.end - 1 >= region_range.begin) { + if (upb >= lob) { + range_set_bounds(®ion_range, lob, upb); range_extend(range, ®ion_range); } } @@ -2541,7 +2565,7 @@ static void pci_dev_get_w64(PCIBus *b, PCIDevice *dev, void *opaque) void pci_bus_get_w64_range(PCIBus *bus, Range *range) { - range->begin = range->end = 0; + range_make_empty(range); pci_for_each_device_under_bus(bus, pci_dev_get_w64, range); } diff --git a/hw/ppc/mac_newworld.c b/hw/ppc/mac_newworld.c index 32e88b3786..7d2510658d 100644 --- a/hw/ppc/mac_newworld.c +++ b/hw/ppc/mac_newworld.c @@ -380,6 +380,7 @@ static void ppc_core99_init(MachineState *machine) pci_bus = pci_pmac_init(pic, get_system_memory(), get_system_io()); machine_arch = ARCH_MAC99; } + object_property_set_bool(OBJECT(pci_bus), true, "realized", &error_abort); machine->usb |= defaults_enabled() && !machine->usb_disabled; diff --git a/hw/scsi/megasas.c b/hw/scsi/megasas.c index d1772183cf..52a41239cf 100644 --- a/hw/scsi/megasas.c +++ b/hw/scsi/megasas.c @@ -29,7 +29,7 @@ #include "hw/scsi/scsi.h" #include "block/scsi.h" #include "trace.h" - +#include "qapi/error.h" #include "mfi.h" #define MEGASAS_VERSION_GEN1 "1.70" @@ -48,11 +48,7 @@ #define MEGASAS_FLAG_USE_JBOD 0 #define MEGASAS_MASK_USE_JBOD (1 << MEGASAS_FLAG_USE_JBOD) -#define MEGASAS_FLAG_USE_MSI 1 -#define MEGASAS_MASK_USE_MSI (1 << MEGASAS_FLAG_USE_MSI) -#define MEGASAS_FLAG_USE_MSIX 2 -#define MEGASAS_MASK_USE_MSIX (1 << MEGASAS_FLAG_USE_MSIX) -#define MEGASAS_FLAG_USE_QUEUE64 3 +#define MEGASAS_FLAG_USE_QUEUE64 1 #define MEGASAS_MASK_USE_QUEUE64 (1 << MEGASAS_FLAG_USE_QUEUE64) static const char *mfi_frame_desc[] = { @@ -96,6 +92,8 @@ typedef struct MegasasState { int busy; int diag; int adp_reset; + OnOffAuto msi; + OnOffAuto msix; MegasasCmd *event_cmd; int event_locale; @@ -157,14 +155,9 @@ static bool megasas_use_queue64(MegasasState *s) return s->flags & MEGASAS_MASK_USE_QUEUE64; } -static bool megasas_use_msi(MegasasState *s) -{ - return s->flags & MEGASAS_MASK_USE_MSI; -} - static bool megasas_use_msix(MegasasState *s) { - return s->flags & MEGASAS_MASK_USE_MSIX; + return s->msix != ON_OFF_AUTO_OFF; } static bool megasas_is_jbod(MegasasState *s) @@ -2309,9 +2302,7 @@ static void megasas_scsi_uninit(PCIDevice *d) if (megasas_use_msix(s)) { msix_uninit(d, &s->mmio_io, &s->mmio_io); } - if (megasas_use_msi(s)) { - msi_uninit(d); - } + msi_uninit(d); } static const struct SCSIBusInfo megasas_scsi_info = { @@ -2332,6 +2323,8 @@ static void megasas_scsi_realize(PCIDevice *dev, Error **errp) MegasasBaseClass *b = MEGASAS_DEVICE_GET_CLASS(s); uint8_t *pci_conf; int i, bar_type; + Error *err = NULL; + int ret; pci_conf = dev->config; @@ -2340,6 +2333,24 @@ static void megasas_scsi_realize(PCIDevice *dev, Error **errp) /* Interrupt pin 1 */ pci_conf[PCI_INTERRUPT_PIN] = 0x01; + if (s->msi != ON_OFF_AUTO_OFF) { + ret = msi_init(dev, 0x50, 1, true, false, &err); + /* Any error other than -ENOTSUP(board's MSI support is broken) + * is a programming error */ + assert(!ret || ret == -ENOTSUP); + if (ret && s->msi == ON_OFF_AUTO_ON) { + /* Can't satisfy user's explicit msi=on request, fail */ + error_append_hint(&err, "You have to use msi=auto (default) or " + "msi=off with this machine type.\n"); + error_propagate(errp, err); + return; + } else if (ret) { + /* With msi=auto, we fall back to MSI off silently */ + s->msi = ON_OFF_AUTO_OFF; + error_free(err); + } + } + memory_region_init_io(&s->mmio_io, OBJECT(s), &megasas_mmio_ops, s, "megasas-mmio", 0x4000); memory_region_init_io(&s->port_io, OBJECT(s), &megasas_port_ops, s, @@ -2347,14 +2358,10 @@ static void megasas_scsi_realize(PCIDevice *dev, Error **errp) memory_region_init_io(&s->queue_io, OBJECT(s), &megasas_queue_ops, s, "megasas-queue", 0x40000); - if (megasas_use_msi(s) && - msi_init(dev, 0x50, 1, true, false)) { - s->flags &= ~MEGASAS_MASK_USE_MSI; - } if (megasas_use_msix(s) && msix_init(dev, 15, &s->mmio_io, b->mmio_bar, 0x2000, &s->mmio_io, b->mmio_bar, 0x3800, 0x68)) { - s->flags &= ~MEGASAS_MASK_USE_MSIX; + s->msix = ON_OFF_AUTO_OFF; } if (pci_is_express(dev)) { pcie_endpoint_cap_init(dev, 0xa0); @@ -2422,10 +2429,8 @@ static Property megasas_properties_gen1[] = { MEGASAS_DEFAULT_FRAMES), DEFINE_PROP_STRING("hba_serial", MegasasState, hba_serial), DEFINE_PROP_UINT64("sas_address", MegasasState, sas_addr, 0), - DEFINE_PROP_BIT("use_msi", MegasasState, flags, - MEGASAS_FLAG_USE_MSI, false), - DEFINE_PROP_BIT("use_msix", MegasasState, flags, - MEGASAS_FLAG_USE_MSIX, false), + DEFINE_PROP_ON_OFF_AUTO("msi", MegasasState, msi, ON_OFF_AUTO_AUTO), + DEFINE_PROP_ON_OFF_AUTO("msix", MegasasState, msix, ON_OFF_AUTO_AUTO), DEFINE_PROP_BIT("use_jbod", MegasasState, flags, MEGASAS_FLAG_USE_JBOD, false), DEFINE_PROP_END_OF_LIST(), @@ -2438,10 +2443,8 @@ static Property megasas_properties_gen2[] = { MEGASAS_GEN2_DEFAULT_FRAMES), DEFINE_PROP_STRING("hba_serial", MegasasState, hba_serial), DEFINE_PROP_UINT64("sas_address", MegasasState, sas_addr, 0), - DEFINE_PROP_BIT("use_msi", MegasasState, flags, - MEGASAS_FLAG_USE_MSI, true), - DEFINE_PROP_BIT("use_msix", MegasasState, flags, - MEGASAS_FLAG_USE_MSIX, true), + DEFINE_PROP_ON_OFF_AUTO("msi", MegasasState, msi, ON_OFF_AUTO_AUTO), + DEFINE_PROP_ON_OFF_AUTO("msix", MegasasState, msix, ON_OFF_AUTO_AUTO), DEFINE_PROP_BIT("use_jbod", MegasasState, flags, MEGASAS_FLAG_USE_JBOD, false), DEFINE_PROP_END_OF_LIST(), diff --git a/hw/scsi/mptsas.c b/hw/scsi/mptsas.c index be88e161a9..1ae32fb7d3 100644 --- a/hw/scsi/mptsas.c +++ b/hw/scsi/mptsas.c @@ -32,7 +32,7 @@ #include "hw/scsi/scsi.h" #include "block/scsi.h" #include "trace.h" - +#include "qapi/error.h" #include "mptsas.h" #include "mpi.h" @@ -63,7 +63,7 @@ static void mptsas_update_interrupt(MPTSASState *s) PCIDevice *pci = (PCIDevice *) s; uint32_t state = s->intr_status & ~(s->intr_mask | MPI_HIS_IOP_DOORBELL_STATUS); - if (s->msi_in_use && msi_enabled(pci)) { + if (msi_enabled(pci)) { if (state) { trace_mptsas_irq_msi(s); msi_notify(pci, 0); @@ -1273,10 +1273,30 @@ static void mptsas_scsi_init(PCIDevice *dev, Error **errp) { DeviceState *d = DEVICE(dev); MPTSASState *s = MPT_SAS(dev); + Error *err = NULL; + int ret; dev->config[PCI_LATENCY_TIMER] = 0; dev->config[PCI_INTERRUPT_PIN] = 0x01; + if (s->msi != ON_OFF_AUTO_OFF) { + ret = msi_init(dev, 0, 1, true, false, &err); + /* Any error other than -ENOTSUP(board's MSI support is broken) + * is a programming error */ + assert(!ret || ret == -ENOTSUP); + if (ret && s->msi == ON_OFF_AUTO_ON) { + /* Can't satisfy user's explicit msi=on request, fail */ + error_append_hint(&err, "You have to use msi=auto (default) or " + "msi=off with this machine type.\n"); + error_propagate(errp, err); + return; + } + assert(!err || s->msi == ON_OFF_AUTO_AUTO); + /* With msi=auto, we fall back to MSI off silently */ + error_free(err); + + } + memory_region_init_io(&s->mmio_io, OBJECT(s), &mptsas_mmio_ops, s, "mptsas-mmio", 0x4000); memory_region_init_io(&s->port_io, OBJECT(s), &mptsas_port_ops, s, @@ -1284,11 +1304,6 @@ static void mptsas_scsi_init(PCIDevice *dev, Error **errp) memory_region_init_io(&s->diag_io, OBJECT(s), &mptsas_diag_ops, s, "mptsas-diag", 0x10000); - if (s->msi_available && - msi_init(dev, 0, 1, true, false) >= 0) { - s->msi_in_use = true; - } - pci_register_bar(dev, 0, PCI_BASE_ADDRESS_SPACE_IO, &s->port_io); pci_register_bar(dev, 1, PCI_BASE_ADDRESS_SPACE_MEMORY | PCI_BASE_ADDRESS_MEM_TYPE_32, &s->mmio_io); @@ -1319,9 +1334,7 @@ static void mptsas_scsi_uninit(PCIDevice *dev) MPTSASState *s = MPT_SAS(dev); qemu_bh_delete(s->request_bh); - if (s->msi_in_use) { - msi_uninit(dev); - } + msi_uninit(dev); } static void mptsas_reset(DeviceState *dev) @@ -1357,7 +1370,6 @@ static const VMStateDescription vmstate_mptsas = { .post_load = mptsas_post_load, .fields = (VMStateField[]) { VMSTATE_PCI_DEVICE(dev, MPTSASState), - VMSTATE_BOOL(msi_in_use, MPTSASState), VMSTATE_UINT32(state, MPTSASState), VMSTATE_UINT8(who_init, MPTSASState), @@ -1403,7 +1415,7 @@ static const VMStateDescription vmstate_mptsas = { static Property mptsas_properties[] = { DEFINE_PROP_UINT64("sas_address", MPTSASState, sas_addr, 0), /* TODO: test MSI support under Windows */ - DEFINE_PROP_BIT("msi", MPTSASState, msi_available, 0, true), + DEFINE_PROP_ON_OFF_AUTO("msi", MPTSASState, msi, ON_OFF_AUTO_AUTO), DEFINE_PROP_END_OF_LIST(), }; diff --git a/hw/scsi/mptsas.h b/hw/scsi/mptsas.h index 595f81fb5b..da014a397e 100644 --- a/hw/scsi/mptsas.h +++ b/hw/scsi/mptsas.h @@ -27,11 +27,10 @@ struct MPTSASState { MemoryRegion diag_io; QEMUBH *request_bh; - uint32_t msi_available; + /* properties */ + OnOffAuto msi; uint64_t sas_addr; - bool msi_in_use; - /* Doorbell register */ uint32_t state; uint8_t who_init; diff --git a/hw/scsi/vmw_pvscsi.c b/hw/scsi/vmw_pvscsi.c index 2d7528d1dd..da71c8c8a5 100644 --- a/hw/scsi/vmw_pvscsi.c +++ b/hw/scsi/vmw_pvscsi.c @@ -121,8 +121,7 @@ typedef struct { uint8_t msg_ring_info_valid; /* Whether message ring initialized */ uint8_t use_msg; /* Whether to use message ring */ - uint8_t msi_used; /* Whether MSI support was installed successfully */ - + uint8_t msi_used; /* For migration compatibility */ PVSCSIRingInfo rings; /* Data transfer rings manager */ uint32_t resetting; /* Reset in progress */ @@ -362,7 +361,7 @@ pvscsi_update_irq_status(PVSCSIState *s) trace_pvscsi_update_irq_level(should_raise, s->reg_interrupt_enabled, s->reg_interrupt_status); - if (s->msi_used && msi_enabled(d)) { + if (msi_enabled(d)) { if (should_raise) { trace_pvscsi_update_irq_msi(); msi_notify(d, PVSCSI_VECTOR_COMPLETION); @@ -1056,22 +1055,20 @@ pvscsi_io_read(void *opaque, hwaddr addr, unsigned size) } -static bool +static void pvscsi_init_msi(PVSCSIState *s) { int res; PCIDevice *d = PCI_DEVICE(s); res = msi_init(d, PVSCSI_MSI_OFFSET(s), PVSCSI_MSIX_NUM_VECTORS, - PVSCSI_USE_64BIT, PVSCSI_PER_VECTOR_MASK); + PVSCSI_USE_64BIT, PVSCSI_PER_VECTOR_MASK, NULL); if (res < 0) { trace_pvscsi_init_msi_fail(res); s->msi_used = false; } else { s->msi_used = true; } - - return s->msi_used; } static void @@ -1079,9 +1076,7 @@ pvscsi_cleanup_msi(PVSCSIState *s) { PCIDevice *d = PCI_DEVICE(s); - if (s->msi_used) { - msi_uninit(d); - } + msi_uninit(d); } static const MemoryRegionOps pvscsi_ops = { diff --git a/hw/usb/hcd-xhci.c b/hw/usb/hcd-xhci.c index 43ba61599a..1a3377f038 100644 --- a/hw/usb/hcd-xhci.c +++ b/hw/usb/hcd-xhci.c @@ -26,6 +26,7 @@ #include "hw/pci/msi.h" #include "hw/pci/msix.h" #include "trace.h" +#include "qapi/error.h" //#define DEBUG_XHCI //#define DEBUG_DATA @@ -461,6 +462,8 @@ struct XHCIState { uint32_t numslots; uint32_t flags; uint32_t max_pstreams_mask; + OnOffAuto msi; + OnOffAuto msix; /* Operational Registers */ uint32_t usbcmd; @@ -498,9 +501,7 @@ typedef struct XHCIEvRingSeg { } XHCIEvRingSeg; enum xhci_flags { - XHCI_FLAG_USE_MSI = 1, - XHCI_FLAG_USE_MSI_X, - XHCI_FLAG_SS_FIRST, + XHCI_FLAG_SS_FIRST = 1, XHCI_FLAG_FORCE_PCIE_ENDCAP, XHCI_FLAG_ENABLE_STREAMS, }; @@ -3581,6 +3582,7 @@ static void usb_xhci_init(XHCIState *xhci) static void usb_xhci_realize(struct PCIDevice *dev, Error **errp) { int i, ret; + Error *err = NULL; XHCIState *xhci = XHCI(dev); @@ -3591,6 +3593,23 @@ static void usb_xhci_realize(struct PCIDevice *dev, Error **errp) usb_xhci_init(xhci); + if (xhci->msi != ON_OFF_AUTO_OFF) { + ret = msi_init(dev, 0x70, xhci->numintrs, true, false, &err); + /* Any error other than -ENOTSUP(board's MSI support is broken) + * is a programming error */ + assert(!ret || ret == -ENOTSUP); + if (ret && xhci->msi == ON_OFF_AUTO_ON) { + /* Can't satisfy user's explicit msi=on request, fail */ + error_append_hint(&err, "You have to use msi=auto (default) or " + "msi=off with this machine type.\n"); + error_propagate(errp, err); + return; + } + assert(!err || xhci->msi == ON_OFF_AUTO_AUTO); + /* With msi=auto, we fall back to MSI off silently */ + error_free(err); + } + if (xhci->numintrs > MAXINTRS) { xhci->numintrs = MAXINTRS; } @@ -3648,10 +3667,8 @@ static void usb_xhci_realize(struct PCIDevice *dev, Error **errp) assert(ret >= 0); } - if (xhci_get_flag(xhci, XHCI_FLAG_USE_MSI)) { - msi_init(dev, 0x70, xhci->numintrs, true, false); - } - if (xhci_get_flag(xhci, XHCI_FLAG_USE_MSI_X)) { + if (xhci->msix != ON_OFF_AUTO_OFF) { + /* TODO check for errors */ msix_init(dev, xhci->numintrs, &xhci->mem, 0, OFF_MSIX_TABLE, &xhci->mem, 0, OFF_MSIX_PBA, @@ -3872,8 +3889,8 @@ static const VMStateDescription vmstate_xhci = { }; static Property xhci_properties[] = { - DEFINE_PROP_BIT("msi", XHCIState, flags, XHCI_FLAG_USE_MSI, true), - DEFINE_PROP_BIT("msix", XHCIState, flags, XHCI_FLAG_USE_MSI_X, true), + DEFINE_PROP_ON_OFF_AUTO("msi", XHCIState, msi, ON_OFF_AUTO_AUTO), + DEFINE_PROP_ON_OFF_AUTO("msix", XHCIState, msix, ON_OFF_AUTO_AUTO), DEFINE_PROP_BIT("superspeed-ports-first", XHCIState, flags, XHCI_FLAG_SS_FIRST, true), DEFINE_PROP_BIT("force-pcie-endcap", XHCIState, flags, diff --git a/hw/vfio/pci.c b/hw/vfio/pci.c index f2c679e47c..44783c50ab 100644 --- a/hw/vfio/pci.c +++ b/hw/vfio/pci.c @@ -31,6 +31,7 @@ #include "sysemu/sysemu.h" #include "pci.h" #include "trace.h" +#include "qapi/error.h" #define MSIX_CAP_LENGTH 12 @@ -1170,6 +1171,7 @@ static int vfio_msi_setup(VFIOPCIDevice *vdev, int pos) uint16_t ctrl; bool msi_64bit, msi_maskbit; int ret, entries; + Error *err = NULL; if (pread(vdev->vbasedev.fd, &ctrl, sizeof(ctrl), vdev->config_offset + pos + PCI_CAP_FLAGS) != sizeof(ctrl)) { @@ -1183,12 +1185,13 @@ static int vfio_msi_setup(VFIOPCIDevice *vdev, int pos) trace_vfio_msi_setup(vdev->vbasedev.name, pos); - ret = msi_init(&vdev->pdev, pos, entries, msi_64bit, msi_maskbit); + ret = msi_init(&vdev->pdev, pos, entries, msi_64bit, msi_maskbit, &err); if (ret < 0) { if (ret == -ENOTSUP) { return 0; } - error_report("vfio: msi_init failed"); + error_prepend(&err, "vfio: msi_init failed: "); + error_report_err(err); return ret; } vdev->msi_cap_size = 0xa + (msi_maskbit ? 0xa : 0) + (msi_64bit ? 0x4 : 0); diff --git a/hw/virtio/virtio-bus.c b/hw/virtio/virtio-bus.c index 131376027b..a85b7c8abe 100644 --- a/hw/virtio/virtio-bus.c +++ b/hw/virtio/virtio-bus.c @@ -176,8 +176,8 @@ static int set_host_notifier_internal(DeviceState *proxy, VirtioBusState *bus, return r; } } else { - virtio_queue_set_host_notifier_fd_handler(vq, false, false); k->ioeventfd_assign(proxy, notifier, n, assign); + virtio_queue_set_host_notifier_fd_handler(vq, false, false); event_notifier_cleanup(notifier); } return r; @@ -251,31 +251,25 @@ int virtio_bus_set_host_notifier(VirtioBusState *bus, int n, bool assign) { VirtioBusClass *k = VIRTIO_BUS_GET_CLASS(bus); DeviceState *proxy = DEVICE(BUS(bus)->parent); - VirtIODevice *vdev = virtio_bus_get_device(bus); - VirtQueue *vq = virtio_get_queue(vdev, n); if (!k->ioeventfd_started) { return -ENOSYS; } + k->ioeventfd_set_disabled(proxy, assign); if (assign) { /* * Stop using the generic ioeventfd, we are doing eventfd handling * ourselves below + * + * FIXME: We should just switch the handler and not deassign the + * ioeventfd. + * Otherwise, there's a window where we don't have an + * ioeventfd and we may end up with a notification where + * we don't expect one. */ - k->ioeventfd_set_disabled(proxy, true); - } - /* - * Just switch the handler, don't deassign the ioeventfd. - * Otherwise, there's a window where we don't have an - * ioeventfd and we may end up with a notification where - * we don't expect one. - */ - virtio_queue_set_host_notifier_fd_handler(vq, assign, !assign); - if (!assign) { - /* Use generic ioeventfd handler again. */ - k->ioeventfd_set_disabled(proxy, false); + virtio_bus_stop_ioeventfd(bus); } - return 0; + return set_host_notifier_internal(proxy, bus, n, assign, false); } static char *virtio_bus_get_dev_path(DeviceState *dev) diff --git a/hw/virtio/virtio.c b/hw/virtio/virtio.c index 7ed06eafa6..18153d5a39 100644 --- a/hw/virtio/virtio.c +++ b/hw/virtio/virtio.c @@ -1499,6 +1499,16 @@ int virtio_load(VirtIODevice *vdev, QEMUFile *f, int version_id) } qemu_get_be32s(f, &features); + /* + * Temporarily set guest_features low bits - needed by + * virtio net load code testing for VIRTIO_NET_F_CTRL_GUEST_OFFLOADS + * VIRTIO_NET_F_GUEST_ANNOUNCE and VIRTIO_NET_F_CTRL_VQ. + * + * Note: devices should always test host features in future - don't create + * new dependencies like this. + */ + vdev->guest_features = features; + config_len = qemu_get_be32(f); /* diff --git a/include/hw/i386/pc.h b/include/hw/i386/pc.h index fe5444dfb6..21235322fd 100644 --- a/include/hw/i386/pc.h +++ b/include/hw/i386/pc.h @@ -150,11 +150,6 @@ struct PCMachineClass { /* PC-style peripherals (also used by other machines). */ -typedef struct PcPciInfo { - Range w32; - Range w64; -} PcPciInfo; - #define ACPI_PM_PROP_S3_DISABLED "disable_s3" #define ACPI_PM_PROP_S4_DISABLED "disable_s4" #define ACPI_PM_PROP_S4_VAL "s4_val" diff --git a/include/hw/pci-host/q35.h b/include/hw/pci-host/q35.h index 1075f3ea50..0d64032d87 100644 --- a/include/hw/pci-host/q35.h +++ b/include/hw/pci-host/q35.h @@ -55,12 +55,11 @@ typedef struct MCHPCIState { MemoryRegion smram_region, open_high_smram; MemoryRegion smram, low_smram, high_smram; MemoryRegion tseg_blackhole, tseg_window; - PcPciInfo pci_info; + Range pci_hole; uint64_t below_4g_mem_size; uint64_t above_4g_mem_size; uint64_t pci_hole64_size; uint32_t short_root_bus; - IntelIOMMUState *iommu; } MCHPCIState; typedef struct Q35PCIHost { diff --git a/include/hw/pci/msi.h b/include/hw/pci/msi.h index 8124908abd..4837bcf490 100644 --- a/include/hw/pci/msi.h +++ b/include/hw/pci/msi.h @@ -35,7 +35,8 @@ void msi_set_message(PCIDevice *dev, MSIMessage msg); MSIMessage msi_get_message(PCIDevice *dev, unsigned int vector); bool msi_enabled(const PCIDevice *dev); int msi_init(struct PCIDevice *dev, uint8_t offset, - unsigned int nr_vectors, bool msi64bit, bool msi_per_vector_mask); + unsigned int nr_vectors, bool msi64bit, + bool msi_per_vector_mask, Error **errp); void msi_uninit(struct PCIDevice *dev); void msi_reset(PCIDevice *dev); void msi_notify(PCIDevice *dev, unsigned int vector); diff --git a/include/hw/pci/pci_bus.h b/include/hw/pci/pci_bus.h index 403fec6e58..5484a9b5c5 100644 --- a/include/hw/pci/pci_bus.h +++ b/include/hw/pci/pci_bus.h @@ -39,6 +39,8 @@ struct PCIBus { Keep a count of the number of devices with raised IRQs. */ int nirq; int *irq_count; + + Notifier machine_done; }; typedef struct PCIBridgeWindows PCIBridgeWindows; diff --git a/include/qemu/range.h b/include/qemu/range.h index 3970f00089..f28f0c1825 100644 --- a/include/qemu/range.h +++ b/include/qemu/range.h @@ -26,32 +26,111 @@ /* * Operations on 64 bit address ranges. * Notes: - * - ranges must not wrap around 0, but can include the last byte ~0x0LL. - * - this can not represent a full 0 to ~0x0LL range. + * - Ranges must not wrap around 0, but can include UINT64_MAX. */ -/* A structure representing a range of addresses. */ struct Range { - uint64_t begin; /* First byte of the range, or 0 if empty. */ - uint64_t end; /* 1 + the last byte. 0 if range empty or ends at ~0x0LL. */ + /* + * Do not access members directly, use the functions! + * A non-empty range has @lob <= @upb. + * An empty range has @lob == @upb + 1. + */ + uint64_t lob; /* inclusive lower bound */ + uint64_t upb; /* inclusive upper bound */ }; +static inline void range_invariant(Range *range) +{ + assert(range->lob <= range->upb || range->lob == range->upb + 1); +} + +/* Compound literal encoding the empty range */ +#define range_empty ((Range){ .lob = 1, .upb = 0 }) + +/* Is @range empty? */ +static inline bool range_is_empty(Range *range) +{ + range_invariant(range); + return range->lob > range->upb; +} + +/* Does @range contain @val? */ +static inline bool range_contains(Range *range, uint64_t val) +{ + return val >= range->lob && val <= range->upb; +} + +/* Initialize @range to the empty range */ +static inline void range_make_empty(Range *range) +{ + *range = range_empty; + assert(range_is_empty(range)); +} + +/* + * Initialize @range to span the interval [@lob,@upb]. + * Both bounds are inclusive. + * The interval must not be empty, i.e. @lob must be less than or + * equal @upb. + */ +static inline void range_set_bounds(Range *range, uint64_t lob, uint64_t upb) +{ + range->lob = lob; + range->upb = upb; + assert(!range_is_empty(range)); +} + +/* + * Initialize @range to span the interval [@lob,@upb_plus1). + * The lower bound is inclusive, the upper bound is exclusive. + * Zero @upb_plus1 is special: if @lob is also zero, set @range to the + * empty range. Else, set @range to [@lob,UINT64_MAX]. + */ +static inline void range_set_bounds1(Range *range, + uint64_t lob, uint64_t upb_plus1) +{ + if (!lob && !upb_plus1) { + *range = range_empty; + } else { + range->lob = lob; + range->upb = upb_plus1 - 1; + } + range_invariant(range); +} + +/* Return @range's lower bound. @range must not be empty. */ +static inline uint64_t range_lob(Range *range) +{ + assert(!range_is_empty(range)); + return range->lob; +} + +/* Return @range's upper bound. @range must not be empty. */ +static inline uint64_t range_upb(Range *range) +{ + assert(!range_is_empty(range)); + return range->upb; +} + +/* + * Extend @range to the smallest interval that includes @extend_by, too. + */ static inline void range_extend(Range *range, Range *extend_by) { - if (!extend_by->begin && !extend_by->end) { + if (range_is_empty(extend_by)) { return; } - if (!range->begin && !range->end) { + if (range_is_empty(range)) { *range = *extend_by; return; } - if (range->begin > extend_by->begin) { - range->begin = extend_by->begin; + if (range->lob > extend_by->lob) { + range->lob = extend_by->lob; } - /* Compare last byte in case region ends at ~0x0LL */ - if (range->end - 1 < extend_by->end - 1) { - range->end = extend_by->end; + if (range->upb < extend_by->upb) { + range->upb = extend_by->upb; } + range_invariant(range); } /* Get last byte of a range from offset + length. diff --git a/include/sysemu/sysemu.h b/include/sysemu/sysemu.h index 7313673b66..ee7c7608e0 100644 --- a/include/sysemu/sysemu.h +++ b/include/sysemu/sysemu.h @@ -75,6 +75,7 @@ void qemu_add_exit_notifier(Notifier *notify); void qemu_remove_exit_notifier(Notifier *notify); void qemu_add_machine_init_done_notifier(Notifier *notify); +void qemu_remove_machine_init_done_notifier(Notifier *notify); void hmp_savevm(Monitor *mon, const QDict *qdict); int load_vmstate(const char *name); diff --git a/qapi/string-input-visitor.c b/qapi/string-input-visitor.c index b546e5f76a..0690abb7de 100644 --- a/qapi/string-input-visitor.c +++ b/qapi/string-input-visitor.c @@ -59,8 +59,7 @@ static int parse_str(StringInputVisitor *siv, const char *name, Error **errp) if (errno == 0 && endptr > str) { if (*endptr == '\0') { cur = g_malloc0(sizeof(*cur)); - cur->begin = start; - cur->end = start + 1; + range_set_bounds(cur, start, start); siv->ranges = range_list_insert(siv->ranges, cur); cur = NULL; str = NULL; @@ -73,16 +72,14 @@ static int parse_str(StringInputVisitor *siv, const char *name, Error **errp) end < start + 65536)) { if (*endptr == '\0') { cur = g_malloc0(sizeof(*cur)); - cur->begin = start; - cur->end = end + 1; + range_set_bounds(cur, start, end); siv->ranges = range_list_insert(siv->ranges, cur); cur = NULL; str = NULL; } else if (*endptr == ',') { str = endptr + 1; cur = g_malloc0(sizeof(*cur)); - cur->begin = start; - cur->end = end + 1; + range_set_bounds(cur, start, end); siv->ranges = range_list_insert(siv->ranges, cur); cur = NULL; } else { @@ -94,8 +91,7 @@ static int parse_str(StringInputVisitor *siv, const char *name, Error **errp) } else if (*endptr == ',') { str = endptr + 1; cur = g_malloc0(sizeof(*cur)); - cur->begin = start; - cur->end = start + 1; + range_set_bounds(cur, start, start); siv->ranges = range_list_insert(siv->ranges, cur); cur = NULL; } else { @@ -134,7 +130,7 @@ start_list(Visitor *v, const char *name, GenericList **list, size_t size, if (siv->cur_range) { Range *r = siv->cur_range->data; if (r) { - siv->cur = r->begin; + siv->cur = range_lob(r); } *list = g_malloc0(size); } else { @@ -156,7 +152,7 @@ static GenericList *next_list(Visitor *v, GenericList *tail, size_t size) return NULL; } - if (siv->cur < r->begin || siv->cur >= r->end) { + if (!range_contains(r, siv->cur)) { siv->cur_range = g_list_next(siv->cur_range); if (!siv->cur_range) { return NULL; @@ -165,7 +161,7 @@ static GenericList *next_list(Visitor *v, GenericList *tail, size_t size) if (!r) { return NULL; } - siv->cur = r->begin; + siv->cur = range_lob(r); } tail->next = g_malloc0(size); @@ -208,7 +204,7 @@ static void parse_type_int64(Visitor *v, const char *name, int64_t *obj, goto error; } - siv->cur = r->begin; + siv->cur = range_lob(r); } *obj = siv->cur; diff --git a/qapi/string-output-visitor.c b/qapi/string-output-visitor.c index 5ea395ab98..c6f01f9f9c 100644 --- a/qapi/string-output-visitor.c +++ b/qapi/string-output-visitor.c @@ -83,8 +83,8 @@ static void string_output_set(StringOutputVisitor *sov, char *string) static void string_output_append(StringOutputVisitor *sov, int64_t a) { Range *r = g_malloc0(sizeof(*r)); - r->begin = a; - r->end = a + 1; + + range_set_bounds(r, a, a); sov->ranges = range_list_insert(sov->ranges, r); } @@ -92,28 +92,28 @@ static void string_output_append_range(StringOutputVisitor *sov, int64_t s, int64_t e) { Range *r = g_malloc0(sizeof(*r)); - r->begin = s; - r->end = e + 1; + + range_set_bounds(r, s, e); sov->ranges = range_list_insert(sov->ranges, r); } static void format_string(StringOutputVisitor *sov, Range *r, bool next, bool human) { - if (r->end - r->begin > 1) { + if (range_lob(r) != range_upb(r)) { if (human) { g_string_append_printf(sov->string, "0x%" PRIx64 "-0x%" PRIx64, - r->begin, r->end - 1); + range_lob(r), range_upb(r)); } else { g_string_append_printf(sov->string, "%" PRId64 "-%" PRId64, - r->begin, r->end - 1); + range_lob(r), range_upb(r)); } } else { if (human) { - g_string_append_printf(sov->string, "0x%" PRIx64, r->begin); + g_string_append_printf(sov->string, "0x%" PRIx64, range_lob(r)); } else { - g_string_append_printf(sov->string, "%" PRId64, r->begin); + g_string_append_printf(sov->string, "%" PRId64, range_lob(r)); } } if (next) { diff --git a/qemu-options.hx b/qemu-options.hx index a95a936e55..9692e53af6 100644 --- a/qemu-options.hx +++ b/qemu-options.hx @@ -38,7 +38,6 @@ DEF("machine", HAS_ARG, QEMU_OPTION_machine, \ " kvm_shadow_mem=size of KVM shadow MMU in bytes\n" " dump-guest-core=on|off include guest memory in a core dump (default=on)\n" " mem-merge=on|off controls memory merge support (default: on)\n" - " iommu=on|off controls emulated Intel IOMMU (VT-d) support (default=off)\n" " igd-passthru=on|off controls IGD GFX passthrough support (default=off)\n" " aes-key-wrap=on|off controls support for AES key wrapping (default=on)\n" " dea-key-wrap=on|off controls support for DEA key wrapping (default=on)\n" @@ -73,8 +72,6 @@ Include guest memory in a core dump. The default is on. Enables or disables memory merge support. This feature, when supported by the host, de-duplicates identical memory pages among VMs instances (enabled by default). -@item iommu=on|off -Enables or disables emulated Intel IOMMU (VT-d) support. The default is off. @item aes-key-wrap=on|off Enables or disables AES key wrapping support on s390-ccw hosts. This feature controls whether AES wrapping keys will be created to allow diff --git a/tests/acpi-test-data/pc/APIC.cphp b/tests/acpi-test-data/pc/APIC.cphp Binary files differnew file mode 100644 index 0000000000..1bf8a0a63b --- /dev/null +++ b/tests/acpi-test-data/pc/APIC.cphp diff --git a/tests/acpi-test-data/pc/DSDT.cphp b/tests/acpi-test-data/pc/DSDT.cphp Binary files differnew file mode 100644 index 0000000000..e8b146208e --- /dev/null +++ b/tests/acpi-test-data/pc/DSDT.cphp diff --git a/tests/acpi-test-data/q35/APIC.cphp b/tests/acpi-test-data/q35/APIC.cphp Binary files differnew file mode 100644 index 0000000000..1bf8a0a63b --- /dev/null +++ b/tests/acpi-test-data/q35/APIC.cphp diff --git a/tests/acpi-test-data/q35/DSDT.cphp b/tests/acpi-test-data/q35/DSDT.cphp Binary files differnew file mode 100644 index 0000000000..6cc28c6dae --- /dev/null +++ b/tests/acpi-test-data/q35/DSDT.cphp diff --git a/tests/bios-tables-test.c b/tests/bios-tables-test.c index 92c90dd194..de4019e57d 100644 --- a/tests/bios-tables-test.c +++ b/tests/bios-tables-test.c @@ -801,6 +801,32 @@ static void test_acpi_q35_tcg_bridge(void) free_test_data(&data); } +static void test_acpi_piix4_tcg_cphp(void) +{ + test_data data; + + memset(&data, 0, sizeof(data)); + data.machine = MACHINE_PC; + data.variant = ".cphp"; + test_acpi_one("-machine accel=tcg" + " -smp 2,cores=3,sockets=2,maxcpus=6", + &data); + free_test_data(&data); +} + +static void test_acpi_q35_tcg_cphp(void) +{ + test_data data; + + memset(&data, 0, sizeof(data)); + data.machine = MACHINE_Q35; + data.variant = ".cphp"; + test_acpi_one("-machine q35,accel=tcg" + " -smp 2,cores=3,sockets=2,maxcpus=6", + &data); + free_test_data(&data); +} + static uint8_t ipmi_required_struct_types[] = { 0, 1, 3, 4, 16, 17, 19, 32, 38, 127 }; @@ -856,6 +882,8 @@ int main(int argc, char *argv[]) qtest_add_func("acpi/q35/tcg/bridge", test_acpi_q35_tcg_bridge); qtest_add_func("acpi/piix4/tcg/ipmi", test_acpi_piix4_tcg_ipmi); qtest_add_func("acpi/q35/tcg/ipmi", test_acpi_q35_tcg_ipmi); + qtest_add_func("acpi/piix4/tcg/cpuhp", test_acpi_piix4_tcg_cphp); + qtest_add_func("acpi/q35/tcg/cpuhp", test_acpi_q35_tcg_cphp); } ret = g_test_run(); boot_sector_cleanup(disk); diff --git a/tests/test-logging.c b/tests/test-logging.c index 440e75f5db..cdf13c6ba5 100644 --- a/tests/test-logging.c +++ b/tests/test-logging.c @@ -68,6 +68,17 @@ static void test_parse_range(void) g_assert(qemu_log_in_addr_range(0x2050)); g_assert(qemu_log_in_addr_range(0x3050)); + qemu_set_dfilter_ranges("0xffffffffffffffff-1", &error_abort); + g_assert(qemu_log_in_addr_range(UINT64_MAX)); + g_assert_false(qemu_log_in_addr_range(UINT64_MAX - 1)); + + qemu_set_dfilter_ranges("0..0xffffffffffffffff", &err); + g_assert(qemu_log_in_addr_range(0)); + g_assert(qemu_log_in_addr_range(UINT64_MAX)); + + qemu_set_dfilter_ranges("2..1", &err); + error_free_or_abort(&err); + qemu_set_dfilter_ranges("0x1000+onehundred", &err); error_free_or_abort(&err); diff --git a/util/log.c b/util/log.c index 32e416051c..b6c75b1102 100644 --- a/util/log.c +++ b/util/log.c @@ -131,8 +131,8 @@ bool qemu_log_in_addr_range(uint64_t addr) if (debug_regions) { int i = 0; for (i = 0; i < debug_regions->len; i++) { - struct Range *range = &g_array_index(debug_regions, Range, i); - if (addr >= range->begin && addr <= range->end) { + Range *range = &g_array_index(debug_regions, Range, i); + if (range_contains(range, addr)) { return true; } } @@ -158,7 +158,7 @@ void qemu_set_dfilter_ranges(const char *filter_spec, Error **errp) for (i = 0; ranges[i]; i++) { const char *r = ranges[i]; const char *range_op, *r2, *e; - uint64_t r1val, r2val; + uint64_t r1val, r2val, lob, upb; struct Range range; range_op = strstr(r, "-"); @@ -187,27 +187,28 @@ void qemu_set_dfilter_ranges(const char *filter_spec, Error **errp) (int)(r2 - range_op), range_op); goto out; } - if (r2val == 0) { - error_setg(errp, "Invalid range"); - goto out; - } switch (*range_op) { case '+': - range.begin = r1val; - range.end = r1val + (r2val - 1); + lob = r1val; + upb = r1val + r2val - 1; break; case '-': - range.end = r1val; - range.begin = r1val - (r2val - 1); + upb = r1val; + lob = r1val - (r2val - 1); break; case '.': - range.begin = r1val; - range.end = r2val; + lob = r1val; + upb = r2val; break; default: g_assert_not_reached(); } + if (lob > upb) { + error_setg(errp, "Invalid range"); + goto out; + } + range_set_bounds(&range, lob, upb); g_array_append_val(debug_regions, range); } out: diff --git a/util/range.c b/util/range.c index e90c988dbf..416df7cdae 100644 --- a/util/range.c +++ b/util/range.c @@ -22,20 +22,18 @@ #include "qemu/range.h" /* - * Operations on 64 bit address ranges. - * Notes: - * - ranges must not wrap around 0, but can include the last byte ~0x0LL. - * - this can not represent a full 0 to ~0x0LL range. + * Return -1 if @a < @b, 1 @a > @b, and 0 if they touch or overlap. + * Both @a and @b must not be empty. */ - -/* Return -1 if @a < @b, 1 if greater, and 0 if they touch or overlap. */ static inline int range_compare(Range *a, Range *b) { - /* Zero a->end is 2**64, and therefore not less than any b->begin */ - if (a->end && a->end < b->begin) { + assert(!range_is_empty(a) && !range_is_empty(b)); + + /* Careful, avoid wraparound */ + if (b->lob && b->lob - 1 > a->upb) { return -1; } - if (b->end && a->begin > b->end) { + if (a->lob && a->lob - 1 > b->upb) { return 1; } return 0; @@ -46,8 +44,7 @@ GList *range_list_insert(GList *list, Range *data) { GList *l; - /* Range lists require no empty ranges */ - assert(data->begin < data->end || (data->begin && !data->end)); + assert(!range_is_empty(data)); /* Skip all list elements strictly less than data */ for (l = list; l && range_compare(l->data, data) < 0; l = l->next) { @@ -2675,6 +2675,11 @@ void qemu_add_machine_init_done_notifier(Notifier *notify) } } +void qemu_remove_machine_init_done_notifier(Notifier *notify) +{ + notifier_remove(notify); +} + static void qemu_run_machine_init_done_notifiers(void) { notifier_list_notify(&machine_init_done_notifiers, NULL); @@ -190,6 +190,9 @@ static void xen_ram_init(PCMachineState *pcms, /* Handle the machine opt max-ram-below-4g. It is basically doing * min(xen limit, user limit). */ + if (!user_lowmem) { + user_lowmem = HVM_BELOW_4G_RAM_END; /* default */ + } if (HVM_BELOW_4G_RAM_END <= user_lowmem) { user_lowmem = HVM_BELOW_4G_RAM_END; } |