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x86 fixes for -rc3 

* Fix SynIC crash
 * Fix x86 crash on MSR code on AMD hosts
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Merge remote-tracking branch 'remotes/ehabkost/tags/x86-for-3.1-pull-request' into staging

x86 fixes for -rc3

* Fix SynIC crash
* Fix x86 crash on MSR code on AMD hosts

# gpg: Signature made Mon 26 Nov 2018 20:58:34 GMT
# gpg:                using RSA key 2807936F984DC5A6
# gpg: Good signature from "Eduardo Habkost <ehabkost@redhat.com>"
# Primary key fingerprint: 5A32 2FD5 ABC4 D3DB ACCF  D1AA 2807 936F 984D C5A6

* remotes/ehabkost/tags/x86-for-3.1-pull-request:
  hw/hyperv: fix NULL dereference with pure-kvm SynIC
  kvm: Use KVM_GET_MSR_INDEX_LIST for MSR_IA32_ARCH_CAPABILITIES support

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This commit is contained in:
Peter Maydell 2018-11-27 09:55:05 +00:00
parent d522fba244 30a759b61a
commit d5d31c9a8a
2 changed files with 12 additions and 9 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
hw/hyperv/hyperv.c
View File

@ -136,7 +136,11 @@ void hyperv_synic_add(CPUState *cs)
void hyperv_synic_reset(CPUState *cs)
{
device_reset(DEVICE(get_synic(cs)));
SynICState *synic = get_synic(cs);
if (synic) {
device_reset(DEVICE(synic));
}
}
static const TypeInfo synic_type_info = {

15
target/i386/kvm.c
View File

@ -95,6 +95,7 @@ static bool has_msr_xss;
static bool has_msr_spec_ctrl;
static bool has_msr_virt_ssbd;
static bool has_msr_smi_count;
static bool has_msr_arch_capabs;
static uint32_t has_architectural_pmu_version;
static uint32_t num_architectural_pmu_gp_counters;
@ -1481,6 +1482,9 @@ static int kvm_get_supported_msrs(KVMState *s)
case MSR_VIRT_SSBD:
has_msr_virt_ssbd = true;
break;
case MSR_IA32_ARCH_CAPABILITIES:
has_msr_arch_capabs = true;
break;
}
}
}
@ -2002,14 +2006,9 @@ static int kvm_put_msrs(X86CPU *cpu, int level)
#endif
/* If host supports feature MSR, write down. */
if (kvm_feature_msrs) {
int i;
for (i = 0; i < kvm_feature_msrs->nmsrs; i++)
if (kvm_feature_msrs->indices[i] == MSR_IA32_ARCH_CAPABILITIES) {
kvm_msr_entry_add(cpu, MSR_IA32_ARCH_CAPABILITIES,
env->features[FEAT_ARCH_CAPABILITIES]);
break;
}
if (has_msr_arch_capabs) {
kvm_msr_entry_add(cpu, MSR_IA32_ARCH_CAPABILITIES,
env->features[FEAT_ARCH_CAPABILITIES]);
}
/*