Merge tag 'for-upstream' of https://gitlab.com/bonzini/qemu into staging

* WHPX support for xcr0
* qga-wss fixes
* Meson conversions
* Removed -soundhw pcspk

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# gpg: Signature made Sat 07 May 2022 12:48:55 AM CDT
# gpg:                using RSA key F13338574B662389866C7682BFFBD25F78C7AE83
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* tag 'for-upstream' of https://gitlab.com/bonzini/qemu: (25 commits)
  pc: remove -soundhw pcspk
  configure, meson: move vhost options to Meson
  meson: use have_vhost_* variables to pick sources
  meson: create have_vhost_* variables
  build: move vhost-user-fs configuration to Kconfig
  build: move vhost-scsi configuration to Kconfig
  build: move vhost-vsock configuration to Kconfig
  configure: simplify vhost-net-{user, vdpa} configuration
  meson, virtio: place all virtio-pci devices under virtio_pci_ss
  configure: omit options with default values from meson command line
  meson: pass more options directly as -D
  configure: switch directory options to automatic parsing
  meson: always combine directories with prefix
  meson, configure: move --interp-prefix to meson
  meson, configure: move --with-pkgversion, CONFIG_STAMP to meson
  meson, configure: move bdrv whitelists to meson
  meson, configure: move --tls-priority to meson
  configure: switch string options to automatic parsing
  configure: move Windows flags detection to meson
  configure, meson: move iasl detection to meson
  ...

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

2 files changed, 90 insertions, 0 deletions

diff --git a/target/i386/whpx/whpx-all.c b/target/i386/whpx/whpx-all.c
index b625ad5bbb..23ae639b23 100644
--- a/target/i386/whpx/whpx-all.c
+++ b/target/i386/whpx/whpx-all.c
@@ -246,9 +246,15 @@ static bool whpx_allowed;
 static bool whp_dispatch_initialized;
 static HMODULE hWinHvPlatform, hWinHvEmulation;
 static uint32_t max_vcpu_index;
+static WHV_PROCESSOR_XSAVE_FEATURES whpx_xsave_cap;
+
 struct whpx_state whpx_global;
 struct WHPDispatch whp_dispatch;
 
+static bool whpx_has_xsave(void)
+{
+    return whpx_xsave_cap.XsaveSupport;
+}
 
 /*
  * VP support
@@ -300,6 +306,28 @@ static SegmentCache whpx_seg_h2q(const WHV_X64_SEGMENT_REGISTER *hs)
     return qs;
 }
 
+/* X64 Extended Control Registers */
+static void whpx_set_xcrs(CPUState *cpu)
+{
+    CPUX86State *env = cpu->env_ptr;
+    HRESULT hr;
+    struct whpx_state *whpx = &whpx_global;
+    WHV_REGISTER_VALUE xcr0;
+    WHV_REGISTER_NAME xcr0_name = WHvX64RegisterXCr0;
+
+    if (!whpx_has_xsave()) {
+        return;
+    }
+
+    /* Only xcr0 is supported by the hypervisor currently */
+    xcr0.Reg64 = env->xcr0;
+    hr = whp_dispatch.WHvSetVirtualProcessorRegisters(
+        whpx->partition, cpu->cpu_index, &xcr0_name, 1, &xcr0);
+    if (FAILED(hr)) {
+        error_report("WHPX: Failed to set register xcr0, hr=%08lx", hr);
+    }
+}
+
 static int whpx_set_tsc(CPUState *cpu)
 {
     CPUX86State *env = cpu->env_ptr;
@@ -435,6 +463,12 @@ static void whpx_set_registers(CPUState *cpu, int level)
 
     /* 8 Debug Registers - Skipped */
 
+    /*
+     * Extended control registers needs to be handled separately depending
+     * on whether xsave is supported/enabled or not.
+     */
+    whpx_set_xcrs(cpu);
+
     /* 16 XMM registers */
     assert(whpx_register_names[idx] == WHvX64RegisterXmm0);
     idx_next = idx + 16;
@@ -541,6 +575,30 @@ static int whpx_get_tsc(CPUState *cpu)
     return 0;
 }
 
+/* X64 Extended Control Registers */
+static void whpx_get_xcrs(CPUState *cpu)
+{
+    CPUX86State *env = cpu->env_ptr;
+    HRESULT hr;
+    struct whpx_state *whpx = &whpx_global;
+    WHV_REGISTER_VALUE xcr0;
+    WHV_REGISTER_NAME xcr0_name = WHvX64RegisterXCr0;
+
+    if (!whpx_has_xsave()) {
+        return;
+    }
+
+    /* Only xcr0 is supported by the hypervisor currently */
+    hr = whp_dispatch.WHvGetVirtualProcessorRegisters(
+        whpx->partition, cpu->cpu_index, &xcr0_name, 1, &xcr0);
+    if (FAILED(hr)) {
+        error_report("WHPX: Failed to get register xcr0, hr=%08lx", hr);
+        return;
+    }
+
+    env->xcr0 = xcr0.Reg64;
+}
+
 static void whpx_get_registers(CPUState *cpu)
 {
     struct whpx_state *whpx = &whpx_global;
@@ -634,6 +692,12 @@ static void whpx_get_registers(CPUState *cpu)
 
     /* 8 Debug Registers - Skipped */
 
+    /*
+     * Extended control registers needs to be handled separately depending
+     * on whether xsave is supported/enabled or not.
+     */
+    whpx_get_xcrs(cpu);
+
     /* 16 XMM registers */
     assert(whpx_register_names[idx] == WHvX64RegisterXmm0);
     idx_next = idx + 16;
@@ -2513,6 +2577,29 @@ static int whpx_accel_init(MachineState *ms)
         goto error;
     }
 
+    /*
+     * Query the XSAVE capability of the partition. Any error here is not
+     * considered fatal.
+     */
+    hr = whp_dispatch.WHvGetPartitionProperty(
+        whpx->partition,
+        WHvPartitionPropertyCodeProcessorXsaveFeatures,
+        &whpx_xsave_cap,
+        sizeof(whpx_xsave_cap),
+        &whpx_cap_size);
+
+    /*
+     * Windows version which don't support this property will return with the
+     * specific error code.
+     */
+    if (FAILED(hr) && hr != WHV_E_UNKNOWN_PROPERTY) {
+        error_report("WHPX: Failed to query XSAVE capability, hr=%08lx", hr);
+    }
+
+    if (!whpx_has_xsave()) {
+        printf("WHPX: Partition is not XSAVE capable\n");
+    }
+
     memset(&prop, 0, sizeof(WHV_PARTITION_PROPERTY));
     prop.ProcessorCount = ms->smp.cpus;
     hr = whp_dispatch.WHvSetPartitionProperty(
diff --git a/target/i386/whpx/whpx-internal.h b/target/i386/whpx/whpx-internal.h
index 2416ec7922..dbb7e7ba82 100644
--- a/target/i386/whpx/whpx-internal.h
+++ b/target/i386/whpx/whpx-internal.h
@@ -48,6 +48,9 @@ void whpx_apic_get(DeviceState *s);
 
 #define WHV_E_UNKNOWN_CAPABILITY 0x80370300L
 
+/* This should eventually come from the Windows SDK */
+#define WHV_E_UNKNOWN_PROPERTY 0x80370302
+
 #define LIST_WINHVPLATFORM_FUNCTIONS(X) \
   X(HRESULT, WHvGetCapability, (WHV_CAPABILITY_CODE CapabilityCode, VOID* CapabilityBuffer, UINT32 CapabilityBufferSizeInBytes, UINT32* WrittenSizeInBytes)) \
   X(HRESULT, WHvCreatePartition, (WHV_PARTITION_HANDLE* Partition)) \