target/i386/kvm.c | 12 ++++++------ 1 file changed, 6 insertions(+), 6 deletions(-)
VM with interrupt based APF enabled fails to migrate:
qemu-system-x86_64: error: failed to set MSR 0x4b564d02 to 0xf3
We have two issues:
1) There is a typo in kvm_put_msrs() and we write async_pf_int_msr
to MSR_KVM_ASYNC_PF_EN (instead of MSR_KVM_ASYNC_PF_INT)
2) We restore MSR_KVM_ASYNC_PF_EN before MSR_KVM_ASYNC_PF_INT is set
and this violates the check in KVM.
Re-order MSR_KVM_ASYNC_PF_EN/MSR_KVM_ASYNC_PF_INT setting (and
kvm_get_msrs() for consistency) and fix the typo.
Signed-off-by: Vitaly Kuznetsov <vkuznets@redhat.com>
---
This fixes queued but not yet pushed to git commit
"target/i386: support KVM_FEATURE_ASYNC_PF_INT"
---
target/i386/kvm.c | 12 ++++++------
1 file changed, 6 insertions(+), 6 deletions(-)
diff --git a/target/i386/kvm.c b/target/i386/kvm.c
index b26370662075..4a8b3a41c1bc 100644
--- a/target/i386/kvm.c
+++ b/target/i386/kvm.c
@@ -2818,12 +2818,12 @@ static int kvm_put_msrs(X86CPU *cpu, int level)
kvm_msr_entry_add(cpu, MSR_IA32_TSC, env->tsc);
kvm_msr_entry_add(cpu, MSR_KVM_SYSTEM_TIME, env->system_time_msr);
kvm_msr_entry_add(cpu, MSR_KVM_WALL_CLOCK, env->wall_clock_msr);
+ if (env->features[FEAT_KVM] & (1 << KVM_FEATURE_ASYNC_PF_INT)) {
+ kvm_msr_entry_add(cpu, MSR_KVM_ASYNC_PF_INT, env->async_pf_int_msr);
+ }
if (env->features[FEAT_KVM] & (1 << KVM_FEATURE_ASYNC_PF)) {
kvm_msr_entry_add(cpu, MSR_KVM_ASYNC_PF_EN, env->async_pf_en_msr);
}
- if (env->features[FEAT_KVM] & (1 << KVM_FEATURE_ASYNC_PF_INT)) {
- kvm_msr_entry_add(cpu, MSR_KVM_ASYNC_PF_EN, env->async_pf_int_msr);
- }
if (env->features[FEAT_KVM] & (1 << KVM_FEATURE_PV_EOI)) {
kvm_msr_entry_add(cpu, MSR_KVM_PV_EOI_EN, env->pv_eoi_en_msr);
}
@@ -3206,12 +3206,12 @@ static int kvm_get_msrs(X86CPU *cpu)
#endif
kvm_msr_entry_add(cpu, MSR_KVM_SYSTEM_TIME, 0);
kvm_msr_entry_add(cpu, MSR_KVM_WALL_CLOCK, 0);
- if (env->features[FEAT_KVM] & (1 << KVM_FEATURE_ASYNC_PF)) {
- kvm_msr_entry_add(cpu, MSR_KVM_ASYNC_PF_EN, 0);
- }
if (env->features[FEAT_KVM] & (1 << KVM_FEATURE_ASYNC_PF_INT)) {
kvm_msr_entry_add(cpu, MSR_KVM_ASYNC_PF_INT, 0);
}
+ if (env->features[FEAT_KVM] & (1 << KVM_FEATURE_ASYNC_PF)) {
+ kvm_msr_entry_add(cpu, MSR_KVM_ASYNC_PF_EN, 0);
+ }
if (env->features[FEAT_KVM] & (1 << KVM_FEATURE_PV_EOI)) {
kvm_msr_entry_add(cpu, MSR_KVM_PV_EOI_EN, 0);
}
--
2.25.4
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