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

* target/i386: bugfixes
* regenerate meson-buildoptions.sh

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* tag 'for-upstream' of https://gitlab.com/bonzini/qemu:
  i386/tdx: Remove the redundant qemu_mutex_init(&tdx->lock)
  i386/cpu: Cleanup host_cpu_max_instance_init()
  target/i386: tdx: fix locking for interrupt injection
  meson: re-generate scripts/meson-buildoptions.sh to fix IGVM entry
  i386/cpu: Move x86_ext_save_areas[] initialization to .instance_init
  target/i386: do not expose ARCH_CAPABILITIES on AMD CPU

Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>

scripts/meson-buildoptions.sh

@@ -130,7 +130,7 @@ meson_options_help() {
   printf "%s\n" '  hv-balloon      hv-balloon driver (requires Glib 2.68+ GTree API)'
   printf "%s\n" '  hvf             HVF acceleration support'
   printf "%s\n" '  iconv           Font glyph conversion support'
-  printf "%s\n" '  igvm            IGVM file support'
+  printf "%s\n" '  igvm            Independent Guest Virtual Machine (IGVM) file support'
   printf "%s\n" '  jack            JACK sound support'
   printf "%s\n" '  keyring         Linux keyring support'
   printf "%s\n" '  kvm             KVM acceleration support'

target/i386/cpu.c

@@ -9619,6 +9619,16 @@ static void x86_cpu_register_feature_bit_props(X86CPUClass *xcc,
 }
 
 static void x86_cpu_post_initfn(Object *obj)
+{
+#ifndef CONFIG_USER_ONLY
+    if (current_machine && current_machine->cgs) {
+        x86_confidential_guest_cpu_instance_init(
+            X86_CONFIDENTIAL_GUEST(current_machine->cgs), (CPU(obj)));
+    }
+#endif
+}
+
+static void x86_cpu_init_xsave(void)
 {
     static bool first = true;
     uint64_t supported_xcr0;
@@ -9639,13 +9649,6 @@ static void x86_cpu_post_initfn(Object *obj)
             }
         }
     }
-
-#ifndef CONFIG_USER_ONLY
-    if (current_machine && current_machine->cgs) {
-        x86_confidential_guest_cpu_instance_init(
-            X86_CONFIDENTIAL_GUEST(current_machine->cgs), (CPU(obj)));
-    }
-#endif
 }
 
 static void x86_cpu_init_default_topo(X86CPU *cpu)
@@ -9715,6 +9718,11 @@ static void x86_cpu_initfn(Object *obj)
         x86_cpu_load_model(cpu, xcc->model);
     }
 
+    /*
+     * accel's cpu_instance_init may have the xsave check,
+     * so x86_ext_save_areas[] must be initialized before this.
+     */
+    x86_cpu_init_xsave();
     accel_cpu_instance_init(CPU(obj));
 }
 

target/i386/host-cpu.h

@@ -12,7 +12,6 @@
 
 uint32_t host_cpu_phys_bits(void);
 void host_cpu_instance_init(X86CPU *cpu);
-void host_cpu_max_instance_init(X86CPU *cpu);
 bool host_cpu_realizefn(CPUState *cs, Error **errp);
 
 void host_cpu_vendor_fms(char *vendor, int *family, int *model, int *stepping);

target/i386/kvm/kvm.c

@@ -503,8 +503,12 @@ uint32_t kvm_arch_get_supported_cpuid(KVMState *s, uint32_t function,
          * Linux v4.17-v4.20 incorrectly return ARCH_CAPABILITIES on SVM hosts.
          * We can detect the bug by checking if MSR_IA32_ARCH_CAPABILITIES is
          * returned by KVM_GET_MSR_INDEX_LIST.
+         *
+         * But also, because Windows does not like ARCH_CAPABILITIES on AMD
+         * mcahines at all, do not show the fake ARCH_CAPABILITIES MSR that
+         * KVM sets up.
          */
-        if (!has_msr_arch_capabs) {
+        if (!has_msr_arch_capabs || !(edx & CPUID_7_0_EDX_ARCH_CAPABILITIES)) {
             ret &= ~CPUID_7_0_EDX_ARCH_CAPABILITIES;
         }
     } else if (function == 7 && index == 1 && reg == R_EAX) {

target/i386/kvm/tdx.c

@@ -1126,10 +1126,15 @@ int tdx_parse_tdvf(void *flash_ptr, int size)
     return tdvf_parse_metadata(&tdx_guest->tdvf, flash_ptr, size);
 }
 
-static void tdx_inject_interrupt(uint32_t apicid, uint32_t vector)
+static void tdx_inject_interrupt(TdxGuest *tdx)
 {
     int ret;
+    uint32_t apicid, vector;
 
+    qemu_mutex_lock(&tdx->lock);
+    vector = tdx->event_notify_vector;
+    apicid = tdx->event_notify_apicid;
+    qemu_mutex_unlock(&tdx->lock);
     if (vector < 32 || vector > 255) {
         return;
     }
@@ -1179,8 +1184,7 @@ static void tdx_get_quote_completion(TdxGenerateQuoteTask *task)
         error_report("TDX: get-quote: failed to update GetQuote header.");
     }
 
-    tdx_inject_interrupt(tdx_guest->event_notify_apicid,
-                         tdx_guest->event_notify_vector);
+    tdx_inject_interrupt(tdx);
 
     g_free(task->send_data);
     g_free(task->receive_buf);
@@ -1523,8 +1527,6 @@ static void tdx_guest_init(Object *obj)
                             tdx_guest_set_qgs,
                             NULL, NULL);
 
-    qemu_mutex_init(&tdx->lock);
-
     tdx->event_notify_vector = -1;
     tdx->event_notify_apicid = -1;
 }