Merge remote-tracking branch 'remotes/bonzini/tags/for-upstream' into staging

* More uses of RCU_READ_LOCK_GUARD (Dave, myself)
* QOM doc improvments (Greg)
* Cleanups from the Meson conversion (Marc-André)
* Support for multiple -accel options (myself)
* Many x86 machine cleanup (Philippe, myself)
* tests/migration-test cleanup (Juan)
* PC machine removal and next round of deprecation (Thomas)
* kernel-doc integration (Peter, myself)

# gpg: Signature made Wed 18 Dec 2019 01:35:02 GMT
# gpg:                using RSA key BFFBD25F78C7AE83
# gpg: Good signature from "Paolo Bonzini <bonzini@gnu.org>" [full]
# gpg:                 aka "Paolo Bonzini <pbonzini@redhat.com>" [full]
# Primary key fingerprint: 46F5 9FBD 57D6 12E7 BFD4  E2F7 7E15 100C CD36 69B1
#      Subkey fingerprint: F133 3857 4B66 2389 866C  7682 BFFB D25F 78C7 AE83

* remotes/bonzini/tags/for-upstream: (87 commits)
  vga: cleanup mapping of VRAM for non-PCI VGA
  hw/display: Remove "rombar" hack from vga-pci and vmware_vga
  hw/pci: Remove the "command_serr_enable" property
  hw/audio: Remove the "use_broken_id" hack from the AC97 device
  hw/i386: Remove the deprecated machines 0.12 up to 0.15
  hw/pci-host: Add Kconfig entry to select the IGD Passthrough Host Bridge
  hw/pci-host/i440fx: Extract the IGD passthrough host bridge device
  hw/pci-host/i440fx: Use definitions instead of magic values
  hw/pci-host/i440fx: Use size_t to iterate over ARRAY_SIZE()
  hw/pci-host/i440fx: Extract PCII440FXState to "hw/pci-host/i440fx.h"
  hw/pci-host/i440fx: Correct the header description
  Fix some comment spelling errors.
  target/i386: remove unused pci-assign codes
  WHPX: refactor load library
  migration: check length directly to make sure the range is aligned
  memory: include MemoryListener documentation and some missing function parameters
  docs: add memory API reference
  memory.h: Silence kernel-doc complaints
  docs: Create bitops.rst as example of kernel-docs
  bitops.h: Silence kernel-doc complaints
  ...

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

7 files changed, 76 insertions, 203 deletions

diff --git a/target/i386/cpu.c b/target/i386/cpu.c
index 0a9ac65974..e1eb9f4739 100644
--- a/target/i386/cpu.c
+++ b/target/i386/cpu.c
@@ -4695,7 +4695,7 @@ static void x86_cpu_class_check_missing_features(X86CPUClass *xcc,
         return;
     }
 
-    xc = X86_CPU(object_new(object_class_get_name(OBJECT_CLASS(xcc))));
+    xc = X86_CPU(object_new_with_class(OBJECT_CLASS(xcc)));
 
     x86_cpu_expand_features(xc, &err);
     if (err) {
@@ -4763,7 +4763,7 @@ static GSList *get_sorted_cpu_model_list(void)
 
 static char *x86_cpu_class_get_model_id(X86CPUClass *xc)
 {
-    Object *obj = object_new(object_class_get_name(OBJECT_CLASS(xc)));
+    Object *obj = object_new_with_class(OBJECT_CLASS(xc));
     char *r = object_property_get_str(obj, "model-id", &error_abort);
     object_unref(obj);
     return r;
@@ -5141,7 +5141,7 @@ static X86CPU *x86_cpu_from_model(const char *model, QDict *props, Error **errp)
         goto out;
     }
 
-    xc = X86_CPU(object_new(object_class_get_name(OBJECT_CLASS(xcc))));
+    xc = X86_CPU(object_new_with_class(OBJECT_CLASS(xcc)));
     if (props) {
         object_apply_props(OBJECT(xc), props, &err);
         if (err) {
@@ -5983,7 +5983,7 @@ static void x86_cpu_apic_create(X86CPU *cpu, Error **errp)
     APICCommonState *apic;
     ObjectClass *apic_class = OBJECT_CLASS(apic_get_class());
 
-    cpu->apic_state = DEVICE(object_new(object_class_get_name(apic_class)));
+    cpu->apic_state = DEVICE(object_new_with_class(apic_class));
 
     object_property_add_child(OBJECT(cpu), "lapic",
                               OBJECT(cpu->apic_state), &error_abort);
diff --git a/target/i386/kvm.c b/target/i386/kvm.c
index 1d10046a6c..0b511906e3 100644
--- a/target/i386/kvm.c
+++ b/target/i386/kvm.c
@@ -35,7 +35,7 @@
 #include "qemu/main-loop.h"
 #include "qemu/config-file.h"
 #include "qemu/error-report.h"
-#include "hw/i386/pc.h"
+#include "hw/i386/x86.h"
 #include "hw/i386/apic.h"
 #include "hw/i386/apic_internal.h"
 #include "hw/i386/apic-msidef.h"
@@ -2163,7 +2163,7 @@ int kvm_arch_init(MachineState *ms, KVMState *s)
     }
     qemu_register_reset(kvm_unpoison_all, NULL);
 
-    shadow_mem = machine_kvm_shadow_mem(ms);
+    shadow_mem = object_property_get_int(OBJECT(s), "kvm-shadow-mem", &error_abort);
     if (shadow_mem != -1) {
         shadow_mem /= 4096;
         ret = kvm_vm_ioctl(s, KVM_SET_NR_MMU_PAGES, shadow_mem);
@@ -2173,8 +2173,7 @@ int kvm_arch_init(MachineState *ms, KVMState *s)
     }
 
     if (kvm_check_extension(s, KVM_CAP_X86_SMM) &&
-        object_dynamic_cast(OBJECT(ms), TYPE_PC_MACHINE) &&
-        pc_machine_is_smm_enabled(PC_MACHINE(ms))) {
+        x86_machine_is_smm_enabled(X86_MACHINE(ms))) {
         smram_machine_done.notify = register_smram_listener;
         qemu_add_machine_init_done_notifier(&smram_machine_done);
     }
@@ -4494,10 +4493,10 @@ void kvm_arch_init_irq_routing(KVMState *s)
     }
 }
 
-int kvm_arch_irqchip_create(MachineState *ms, KVMState *s)
+int kvm_arch_irqchip_create(KVMState *s)
 {
     int ret;
-    if (machine_kernel_irqchip_split(ms)) {
+    if (kvm_kernel_irqchip_split()) {
         ret = kvm_vm_enable_cap(s, KVM_CAP_SPLIT_IRQCHIP, 0, 24);
         if (ret) {
             error_report("Could not enable split irqchip mode: %s",
@@ -4513,146 +4512,6 @@ int kvm_arch_irqchip_create(MachineState *ms, KVMState *s)
     }
 }
 
-/* Classic KVM device assignment interface. Will remain x86 only. */
-int kvm_device_pci_assign(KVMState *s, PCIHostDeviceAddress *dev_addr,
-                          uint32_t flags, uint32_t *dev_id)
-{
-    struct kvm_assigned_pci_dev dev_data = {
-        .segnr = dev_addr->domain,
-        .busnr = dev_addr->bus,
-        .devfn = PCI_DEVFN(dev_addr->slot, dev_addr->function),
-        .flags = flags,
-    };
-    int ret;
-
-    dev_data.assigned_dev_id =
-        (dev_addr->domain << 16) | (dev_addr->bus << 8) | dev_data.devfn;
-
-    ret = kvm_vm_ioctl(s, KVM_ASSIGN_PCI_DEVICE, &dev_data);
-    if (ret < 0) {
-        return ret;
-    }
-
-    *dev_id = dev_data.assigned_dev_id;
-
-    return 0;
-}
-
-int kvm_device_pci_deassign(KVMState *s, uint32_t dev_id)
-{
-    struct kvm_assigned_pci_dev dev_data = {
-        .assigned_dev_id = dev_id,
-    };
-
-    return kvm_vm_ioctl(s, KVM_DEASSIGN_PCI_DEVICE, &dev_data);
-}
-
-static int kvm_assign_irq_internal(KVMState *s, uint32_t dev_id,
-                                   uint32_t irq_type, uint32_t guest_irq)
-{
-    struct kvm_assigned_irq assigned_irq = {
-        .assigned_dev_id = dev_id,
-        .guest_irq = guest_irq,
-        .flags = irq_type,
-    };
-
-    if (kvm_check_extension(s, KVM_CAP_ASSIGN_DEV_IRQ)) {
-        return kvm_vm_ioctl(s, KVM_ASSIGN_DEV_IRQ, &assigned_irq);
-    } else {
-        return kvm_vm_ioctl(s, KVM_ASSIGN_IRQ, &assigned_irq);
-    }
-}
-
-int kvm_device_intx_assign(KVMState *s, uint32_t dev_id, bool use_host_msi,
-                           uint32_t guest_irq)
-{
-    uint32_t irq_type = KVM_DEV_IRQ_GUEST_INTX |
-        (use_host_msi ? KVM_DEV_IRQ_HOST_MSI : KVM_DEV_IRQ_HOST_INTX);
-
-    return kvm_assign_irq_internal(s, dev_id, irq_type, guest_irq);
-}
-
-int kvm_device_intx_set_mask(KVMState *s, uint32_t dev_id, bool masked)
-{
-    struct kvm_assigned_pci_dev dev_data = {
-        .assigned_dev_id = dev_id,
-        .flags = masked ? KVM_DEV_ASSIGN_MASK_INTX : 0,
-    };
-
-    return kvm_vm_ioctl(s, KVM_ASSIGN_SET_INTX_MASK, &dev_data);
-}
-
-static int kvm_deassign_irq_internal(KVMState *s, uint32_t dev_id,
-                                     uint32_t type)
-{
-    struct kvm_assigned_irq assigned_irq = {
-        .assigned_dev_id = dev_id,
-        .flags = type,
-    };
-
-    return kvm_vm_ioctl(s, KVM_DEASSIGN_DEV_IRQ, &assigned_irq);
-}
-
-int kvm_device_intx_deassign(KVMState *s, uint32_t dev_id, bool use_host_msi)
-{
-    return kvm_deassign_irq_internal(s, dev_id, KVM_DEV_IRQ_GUEST_INTX |
-        (use_host_msi ? KVM_DEV_IRQ_HOST_MSI : KVM_DEV_IRQ_HOST_INTX));
-}
-
-int kvm_device_msi_assign(KVMState *s, uint32_t dev_id, int virq)
-{
-    return kvm_assign_irq_internal(s, dev_id, KVM_DEV_IRQ_HOST_MSI |
-                                              KVM_DEV_IRQ_GUEST_MSI, virq);
-}
-
-int kvm_device_msi_deassign(KVMState *s, uint32_t dev_id)
-{
-    return kvm_deassign_irq_internal(s, dev_id, KVM_DEV_IRQ_GUEST_MSI |
-                                                KVM_DEV_IRQ_HOST_MSI);
-}
-
-bool kvm_device_msix_supported(KVMState *s)
-{
-    /* The kernel lacks a corresponding KVM_CAP, so we probe by calling
-     * KVM_ASSIGN_SET_MSIX_NR with an invalid parameter. */
-    return kvm_vm_ioctl(s, KVM_ASSIGN_SET_MSIX_NR, NULL) == -EFAULT;
-}
-
-int kvm_device_msix_init_vectors(KVMState *s, uint32_t dev_id,
-                                 uint32_t nr_vectors)
-{
-    struct kvm_assigned_msix_nr msix_nr = {
-        .assigned_dev_id = dev_id,
-        .entry_nr = nr_vectors,
-    };
-
-    return kvm_vm_ioctl(s, KVM_ASSIGN_SET_MSIX_NR, &msix_nr);
-}
-
-int kvm_device_msix_set_vector(KVMState *s, uint32_t dev_id, uint32_t vector,
-                               int virq)
-{
-    struct kvm_assigned_msix_entry msix_entry = {
-        .assigned_dev_id = dev_id,
-        .gsi = virq,
-        .entry = vector,
-    };
-
-    return kvm_vm_ioctl(s, KVM_ASSIGN_SET_MSIX_ENTRY, &msix_entry);
-}
-
-int kvm_device_msix_assign(KVMState *s, uint32_t dev_id)
-{
-    return kvm_assign_irq_internal(s, dev_id, KVM_DEV_IRQ_HOST_MSIX |
-                                              KVM_DEV_IRQ_GUEST_MSIX, 0);
-}
-
-int kvm_device_msix_deassign(KVMState *s, uint32_t dev_id)
-{
-    return kvm_deassign_irq_internal(s, dev_id, KVM_DEV_IRQ_GUEST_MSIX |
-                                                KVM_DEV_IRQ_HOST_MSIX);
-}
-
 int kvm_arch_fixup_msi_route(struct kvm_irq_routing_entry *route,
                              uint64_t address, uint32_t data, PCIDevice *dev)
 {
diff --git a/target/i386/kvm_i386.h b/target/i386/kvm_i386.h
index 06fe06bdb3..7d0242f5fb 100644
--- a/target/i386/kvm_i386.h
+++ b/target/i386/kvm_i386.h
@@ -40,26 +40,6 @@ void kvm_synchronize_all_tsc(void);
 void kvm_arch_reset_vcpu(X86CPU *cs);
 void kvm_arch_do_init_vcpu(X86CPU *cs);
 
-int kvm_device_pci_assign(KVMState *s, PCIHostDeviceAddress *dev_addr,
-                          uint32_t flags, uint32_t *dev_id);
-int kvm_device_pci_deassign(KVMState *s, uint32_t dev_id);
-
-int kvm_device_intx_assign(KVMState *s, uint32_t dev_id,
-                           bool use_host_msi, uint32_t guest_irq);
-int kvm_device_intx_set_mask(KVMState *s, uint32_t dev_id, bool masked);
-int kvm_device_intx_deassign(KVMState *s, uint32_t dev_id, bool use_host_msi);
-
-int kvm_device_msi_assign(KVMState *s, uint32_t dev_id, int virq);
-int kvm_device_msi_deassign(KVMState *s, uint32_t dev_id);
-
-bool kvm_device_msix_supported(KVMState *s);
-int kvm_device_msix_init_vectors(KVMState *s, uint32_t dev_id,
-                                 uint32_t nr_vectors);
-int kvm_device_msix_set_vector(KVMState *s, uint32_t dev_id, uint32_t vector,
-                               int virq);
-int kvm_device_msix_assign(KVMState *s, uint32_t dev_id);
-int kvm_device_msix_deassign(KVMState *s, uint32_t dev_id);
-
 void kvm_put_apicbase(X86CPU *cpu, uint64_t value);
 
 bool kvm_enable_x2apic(void);
diff --git a/target/i386/machine.c b/target/i386/machine.c
index 2699eed94e..0c96531a56 100644
--- a/target/i386/machine.c
+++ b/target/i386/machine.c
@@ -1,10 +1,10 @@
 #include "qemu/osdep.h"
 #include "cpu.h"
 #include "exec/exec-all.h"
-#include "hw/i386/pc.h"
 #include "hw/isa/isa.h"
 #include "migration/cpu.h"
 #include "hyperv.h"
+#include "hw/i386/x86.h"
 #include "kvm_i386.h"
 
 #include "sysemu/kvm.h"
@@ -261,7 +261,7 @@ static int cpu_pre_save(void *opaque)
      * intercepted anymore.
      *
      * Furthermore, when a L2 exception is intercepted by L1
-     * hypervisor, it's exception payload (CR2/DR6 on #PF/#DB)
+     * hypervisor, its exception payload (CR2/DR6 on #PF/#DB)
      * should not be set yet in the respective vCPU register.
      * Thus, in case an exception is pending, it is
      * important to save the exception payload seperately.
@@ -271,9 +271,9 @@ static int cpu_pre_save(void *opaque)
      * distinguish between a pending and injected exception
      * and we don't need to store seperately the exception payload.
      *
-     * In order to preserve better backwards-compatabile migration,
+     * In order to preserve better backwards-compatible migration,
      * convert a pending exception to an injected exception in
-     * case it is not important to distingiush between them
+     * case it is not important to distinguish between them
      * as described above.
      */
     if (env->exception_pending && !(env->hflags & HF_GUEST_MASK)) {
@@ -415,7 +415,7 @@ static bool exception_info_needed(void *opaque)
 
     /*
      * It is important to save exception-info only in case
-     * we need to distingiush between a pending and injected
+     * we need to distinguish between a pending and injected
      * exception. Which is only required in case there is a
      * pending exception and vCPU is running L2.
      * For more info, refer to comment in cpu_pre_save().
diff --git a/target/i386/monitor.c b/target/i386/monitor.c
index 9fb4d641d5..27ebfa3ad2 100644
--- a/target/i386/monitor.c
+++ b/target/i386/monitor.c
@@ -28,7 +28,6 @@
 #include "monitor/hmp-target.h"
 #include "monitor/hmp.h"
 #include "qapi/qmp/qdict.h"
-#include "hw/i386/pc.h"
 #include "sysemu/kvm.h"
 #include "sysemu/sev.h"
 #include "qapi/error.h"
diff --git a/target/i386/whp-dispatch.h b/target/i386/whp-dispatch.h
index 23791fbb47..87d049ceab 100644
--- a/target/i386/whp-dispatch.h
+++ b/target/i386/whp-dispatch.h
@@ -50,5 +50,9 @@ extern struct WHPDispatch whp_dispatch;
 
 bool init_whp_dispatch(void);
 
+typedef enum WHPFunctionList {
+    WINHV_PLATFORM_FNS_DEFAULT,
+    WINHV_EMULATION_FNS_DEFAULT,
+} WHPFunctionList;
 
 #endif /* WHP_DISPATCH_H */
diff --git a/target/i386/whpx-all.c b/target/i386/whpx-all.c
index def0c28480..3ed2aa1892 100644
--- a/target/i386/whpx-all.c
+++ b/target/i386/whpx-all.c
@@ -1356,6 +1356,58 @@ static void whpx_handle_interrupt(CPUState *cpu, int mask)
 }
 
 /*
+ * Load the functions from the given library, using the given handle. If a
+ * handle is provided, it is used, otherwise the library is opened. The
+ * handle will be updated on return with the opened one.
+ */
+static bool load_whp_dispatch_fns(HMODULE *handle,
+    WHPFunctionList function_list)
+{
+    HMODULE hLib = *handle;
+
+    #define WINHV_PLATFORM_DLL "WinHvPlatform.dll"
+    #define WINHV_EMULATION_DLL "WinHvEmulation.dll"
+    #define WHP_LOAD_FIELD(return_type, function_name, signature) \
+        whp_dispatch.function_name = \
+            (function_name ## _t)GetProcAddress(hLib, #function_name); \
+        if (!whp_dispatch.function_name) { \
+            error_report("Could not load function %s", #function_name); \
+            goto error; \
+        } \
+
+    #define WHP_LOAD_LIB(lib_name, handle_lib) \
+    if (!handle_lib) { \
+        handle_lib = LoadLibrary(lib_name); \
+        if (!handle_lib) { \
+            error_report("Could not load library %s.", lib_name); \
+            goto error; \
+        } \
+    } \
+
+    switch (function_list) {
+    case WINHV_PLATFORM_FNS_DEFAULT:
+        WHP_LOAD_LIB(WINHV_PLATFORM_DLL, hLib)
+        LIST_WINHVPLATFORM_FUNCTIONS(WHP_LOAD_FIELD)
+        break;
+
+    case WINHV_EMULATION_FNS_DEFAULT:
+        WHP_LOAD_LIB(WINHV_EMULATION_DLL, hLib)
+        LIST_WINHVEMULATION_FUNCTIONS(WHP_LOAD_FIELD)
+        break;
+    }
+
+    *handle = hLib;
+    return true;
+
+error:
+    if (hLib) {
+        FreeLibrary(hLib);
+    }
+
+    return false;
+}
+
+/*
  * Partition support
  */
 
@@ -1490,51 +1542,30 @@ static void whpx_type_init(void)
 
 bool init_whp_dispatch(void)
 {
-    const char *lib_name;
-    HMODULE hLib;
-
     if (whp_dispatch_initialized) {
         return true;
     }
 
-    #define WHP_LOAD_FIELD(return_type, function_name, signature) \
-        whp_dispatch.function_name = \
-            (function_name ## _t)GetProcAddress(hLib, #function_name); \
-        if (!whp_dispatch.function_name) { \
-            error_report("Could not load function %s from library %s.", \
-                         #function_name, lib_name); \
-            goto error; \
-        } \
-
-    lib_name = "WinHvPlatform.dll";
-    hWinHvPlatform = LoadLibrary(lib_name);
-    if (!hWinHvPlatform) {
-        error_report("Could not load library %s.", lib_name);
+    if (!load_whp_dispatch_fns(&hWinHvPlatform, WINHV_PLATFORM_FNS_DEFAULT)) {
         goto error;
     }
-    hLib = hWinHvPlatform;
-    LIST_WINHVPLATFORM_FUNCTIONS(WHP_LOAD_FIELD)
 
-    lib_name = "WinHvEmulation.dll";
-    hWinHvEmulation = LoadLibrary(lib_name);
-    if (!hWinHvEmulation) {
-        error_report("Could not load library %s.", lib_name);
+    if (!load_whp_dispatch_fns(&hWinHvEmulation, WINHV_EMULATION_FNS_DEFAULT)) {
         goto error;
     }
-    hLib = hWinHvEmulation;
-    LIST_WINHVEMULATION_FUNCTIONS(WHP_LOAD_FIELD)
 
     whp_dispatch_initialized = true;
-    return true;
-
-    error:
 
+    return true;
+error:
     if (hWinHvPlatform) {
         FreeLibrary(hWinHvPlatform);
     }
+
     if (hWinHvEmulation) {
         FreeLibrary(hWinHvEmulation);
     }
+
     return false;
 }