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| author | Peter Maydell <peter.maydell@linaro.org> | 2020-07-24 10:52:20 +0100 |
|---|---|---|
| committer | Peter Maydell <peter.maydell@linaro.org> | 2020-07-24 10:52:20 +0100 |
| commit | 7adfbea8fd1efce36019a0c2f198ca73be9d3f18 (patch) | |
| tree | 7496c3d6ab73cd38e0d2b7fcdd1855ed86ef551c | |
| parent | 09e0cd773723219d21655587954da2769f64ba01 (diff) | |
| parent | 0baa4b445e28f37243e5dc72e7efe32f0c9d7801 (diff) | |
Merge remote-tracking branch 'remotes/ehabkost/tags/x86-next-for-5.1-pull-request' into staging
x86 bug fix for -rc2
A fix from Vitaly Kuznetsov for a CPU reset bug
reported by Jan Kiszka.
# gpg: Signature made Thu 23 Jul 2020 20:10:40 BST
# gpg: using RSA key 5A322FD5ABC4D3DBACCFD1AA2807936F984DC5A6
# gpg: issuer "ehabkost@redhat.com"
# gpg: Good signature from "Eduardo Habkost <ehabkost@redhat.com>" [full]
# Primary key fingerprint: 5A32 2FD5 ABC4 D3DB ACCF D1AA 2807 936F 984D C5A6
* remotes/ehabkost/tags/x86-next-for-5.1-pull-request:
KVM: fix CPU reset wrt HF2_GIF_MASK
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
| -rw-r--r-- | target/i386/kvm.c | 16 |
1 files changed, 11 insertions, 5 deletions
diff --git a/target/i386/kvm.c b/target/i386/kvm.c index b8455c89ed..6f18d940a5 100644 --- a/target/i386/kvm.c +++ b/target/i386/kvm.c @@ -3877,7 +3877,9 @@ static int kvm_put_nested_state(X86CPU *cpu) } else { env->nested_state->flags &= ~KVM_STATE_NESTED_GUEST_MODE; } - if (env->hflags2 & HF2_GIF_MASK) { + + /* Don't set KVM_STATE_NESTED_GIF_SET on VMX as it is illegal */ + if (cpu_has_svm(env) && (env->hflags2 & HF2_GIF_MASK)) { env->nested_state->flags |= KVM_STATE_NESTED_GIF_SET; } else { env->nested_state->flags &= ~KVM_STATE_NESTED_GIF_SET; @@ -3919,10 +3921,14 @@ static int kvm_get_nested_state(X86CPU *cpu) } else { env->hflags &= ~HF_GUEST_MASK; } - if (env->nested_state->flags & KVM_STATE_NESTED_GIF_SET) { - env->hflags2 |= HF2_GIF_MASK; - } else { - env->hflags2 &= ~HF2_GIF_MASK; + + /* Keep HF2_GIF_MASK set on !SVM as x86_cpu_pending_interrupt() needs it */ + if (cpu_has_svm(env)) { + if (env->nested_state->flags & KVM_STATE_NESTED_GIF_SET) { + env->hflags2 |= HF2_GIF_MASK; + } else { + env->hflags2 &= ~HF2_GIF_MASK; + } } return ret; |