Commit 7be58a64 authored by Andrey Smetanin's avatar Andrey Smetanin Committed by Paolo Bonzini

kvm/x86: Skip SynIC vector check for QEMU side

QEMU zero-inits Hyper-V SynIC vectors. We should allow that,
and don't reject zero values if set by the host.
Signed-off-by: default avatarAndrey Smetanin <asmetanin@virtuozzo.com>
Reviewed-by: default avatarRoman Kagan <rkagan@virtuozzo.com>
CC: Gleb Natapov <gleb@kernel.org>
CC: Paolo Bonzini <pbonzini@redhat.com>
CC: Roman Kagan <rkagan@virtuozzo.com>
CC: Denis V. Lunev <den@openvz.org>
CC: qemu-devel@nongnu.org
Signed-off-by: default avatarPaolo Bonzini <pbonzini@redhat.com>
parent 23a3b201
...@@ -72,12 +72,13 @@ static bool synic_has_vector_auto_eoi(struct kvm_vcpu_hv_synic *synic, ...@@ -72,12 +72,13 @@ static bool synic_has_vector_auto_eoi(struct kvm_vcpu_hv_synic *synic,
return false; return false;
} }
static int synic_set_sint(struct kvm_vcpu_hv_synic *synic, int sint, u64 data) static int synic_set_sint(struct kvm_vcpu_hv_synic *synic, int sint,
u64 data, bool host)
{ {
int vector; int vector;
vector = data & HV_SYNIC_SINT_VECTOR_MASK; vector = data & HV_SYNIC_SINT_VECTOR_MASK;
if (vector < 16) if (vector < 16 && !host)
return 1; return 1;
/* /*
* Guest may configure multiple SINTs to use the same vector, so * Guest may configure multiple SINTs to use the same vector, so
...@@ -247,7 +248,7 @@ static int synic_set_msr(struct kvm_vcpu_hv_synic *synic, ...@@ -247,7 +248,7 @@ static int synic_set_msr(struct kvm_vcpu_hv_synic *synic,
break; break;
} }
case HV_X64_MSR_SINT0 ... HV_X64_MSR_SINT15: case HV_X64_MSR_SINT0 ... HV_X64_MSR_SINT15:
ret = synic_set_sint(synic, msr - HV_X64_MSR_SINT0, data); ret = synic_set_sint(synic, msr - HV_X64_MSR_SINT0, data, host);
break; break;
default: default:
ret = 1; ret = 1;
......
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