diff options
| author | Chunyan Liu <cyliu@suse.com> | 2014-07-07 14:34:35 +0800 |
|---|---|---|
| committer | Stefano Stabellini <stefano.stabellini@eu.citrix.com> | 2014-08-01 15:58:12 +0000 |
| commit | b33a5bbfbaab6c1ce653a8e3665a18ca67de1456 (patch) | |
| tree | 5befef70c0f64c002c1018854898d2bd4dd50fb4 | |
| parent | 8677de2b4d26f8878b7414d540a6b2e139bc4d91 (diff) | |
qemu: support xen hvm direct kernel boot
qemu side patch to support xen HVM direct kernel boot:
if -kernel exists, calls xen_load_linux(), which will read kernel/initrd
and add a linuxboot.bin or multiboot.bin option rom. The
linuxboot.bin/multiboot.bin will load kernel/initrd and jump to execute
kernel directly. It's working when xen uses seabios.
During this work, found the 'kvmvapic' is in option_rom list, it should
not be there in xen case. Set s->vapic_control = 0 in xen_apic_realize()
to handle that.
Signed-off-by: Chunyan Liu <cyliu@suse.com>
Acked-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
| -rw-r--r-- | hw/i386/pc.c | 25 | ||||
| -rw-r--r-- | hw/i386/pc_piix.c | 7 | ||||
| -rw-r--r-- | hw/i386/xen/xen_apic.c | 1 | ||||
| -rw-r--r-- | include/hw/i386/pc.h | 5 |
4 files changed, 38 insertions, 0 deletions
diff --git a/hw/i386/pc.c b/hw/i386/pc.c index 2cf22b1293..9e589825f0 100644 --- a/hw/i386/pc.c +++ b/hw/i386/pc.c @@ -1190,6 +1190,31 @@ void pc_acpi_init(const char *default_dsdt) } } +FWCfgState *xen_load_linux(const char *kernel_filename, + const char *kernel_cmdline, + const char *initrd_filename, + ram_addr_t below_4g_mem_size, + PcGuestInfo *guest_info) +{ + int i; + FWCfgState *fw_cfg; + + assert(kernel_filename != NULL); + + fw_cfg = fw_cfg_init(BIOS_CFG_IOPORT, BIOS_CFG_IOPORT + 1, 0, 0); + rom_set_fw(fw_cfg); + + load_linux(fw_cfg, kernel_filename, initrd_filename, + kernel_cmdline, below_4g_mem_size); + for (i = 0; i < nb_option_roms; i++) { + assert(!strcmp(option_rom[i].name, "linuxboot.bin") || + !strcmp(option_rom[i].name, "multiboot.bin")); + rom_add_option(option_rom[i].name, option_rom[i].bootindex); + } + guest_info->fw_cfg = fw_cfg; + return fw_cfg; +} + FWCfgState *pc_memory_init(MachineState *machine, MemoryRegion *system_memory, ram_addr_t below_4g_mem_size, diff --git a/hw/i386/pc_piix.c b/hw/i386/pc_piix.c index 9694f88057..4f22be85da 100644 --- a/hw/i386/pc_piix.c +++ b/hw/i386/pc_piix.c @@ -182,6 +182,13 @@ static void pc_init1(MachineState *machine, fw_cfg = pc_memory_init(machine, system_memory, below_4g_mem_size, above_4g_mem_size, rom_memory, &ram_memory, guest_info); + } else if (machine->kernel_filename != NULL) { + /* For xen HVM direct kernel boot, load linux here */ + fw_cfg = xen_load_linux(machine->kernel_filename, + machine->kernel_cmdline, + machine->initrd_filename, + below_4g_mem_size, + guest_info); } gsi_state = g_malloc0(sizeof(*gsi_state)); diff --git a/hw/i386/xen/xen_apic.c b/hw/i386/xen/xen_apic.c index 63bb7f77c6..f5acd6a096 100644 --- a/hw/i386/xen/xen_apic.c +++ b/hw/i386/xen/xen_apic.c @@ -40,6 +40,7 @@ static void xen_apic_realize(DeviceState *dev, Error **errp) { APICCommonState *s = APIC_COMMON(dev); + s->vapic_control = 0; memory_region_init_io(&s->io_memory, OBJECT(s), &xen_apic_io_ops, s, "xen-apic-msi", APIC_SPACE_SIZE); diff --git a/include/hw/i386/pc.h b/include/hw/i386/pc.h index f4b9b2bb71..863eefbf8c 100644 --- a/include/hw/i386/pc.h +++ b/include/hw/i386/pc.h @@ -188,6 +188,11 @@ PcGuestInfo *pc_guest_info_init(ram_addr_t below_4g_mem_size, void pc_pci_as_mapping_init(Object *owner, MemoryRegion *system_memory, MemoryRegion *pci_address_space); +FWCfgState *xen_load_linux(const char *kernel_filename, + const char *kernel_cmdline, + const char *initrd_filename, + ram_addr_t below_4g_mem_size, + PcGuestInfo *guest_info); FWCfgState *pc_memory_init(MachineState *machine, MemoryRegion *system_memory, ram_addr_t below_4g_mem_size, |