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KVM: x86: DR0-DR3 are not clear on reset

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DR0-DR3 are not cleared as they should during reset and when they are set from
userspace.  It appears to be caused by c77fb5fe6f ("KVM: x86: Allow the guest
to run with dirty debug registers").

Force their reload on these situations.

Signed-off-by: Nadav Amit <namit@cs.technion.ac.il>
Message-Id: <1427933438-12782-4-git-send-email-namit@cs.technion.ac.il>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Nadav Amit
2015-04-02 03:10:37 +03:00
committed by Paolo Bonzini
parent 58d269d8cc
commit ae561edeb4
2 changed files with 15 additions and 0 deletions
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arch/x86/include/asm/kvm_host.h
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@@ -340,6 +340,7 @@ struct kvm_pmu {
enum {
KVM_DEBUGREG_BP_ENABLED = 1,
KVM_DEBUGREG_WONT_EXIT = 2,
KVM_DEBUGREG_RELOAD = 4,
};
struct kvm_vcpu_arch {