Commit 360b948d authored by Paolo Bonzini's avatar Paolo Bonzini

KVM: x86: change vcpu->arch.switch_db_regs to a bit mask

The next patch will add another bit that we can test with the
same "if".
Signed-off-by: default avatarPaolo Bonzini <pbonzini@redhat.com>
parent c845f9c6
...@@ -337,6 +337,10 @@ struct kvm_pmu { ...@@ -337,6 +337,10 @@ struct kvm_pmu {
u64 reprogram_pmi; u64 reprogram_pmi;
}; };
enum {
KVM_DEBUGREG_BP_ENABLED = 1,
};
struct kvm_vcpu_arch { struct kvm_vcpu_arch {
/* /*
* rip and regs accesses must go through * rip and regs accesses must go through
...@@ -463,7 +467,7 @@ struct kvm_vcpu_arch { ...@@ -463,7 +467,7 @@ struct kvm_vcpu_arch {
struct mtrr_state_type mtrr_state; struct mtrr_state_type mtrr_state;
u32 pat; u32 pat;
int switch_db_regs; unsigned switch_db_regs;
unsigned long db[KVM_NR_DB_REGS]; unsigned long db[KVM_NR_DB_REGS];
unsigned long dr6; unsigned long dr6;
unsigned long dr7; unsigned long dr7;
......
...@@ -759,7 +759,9 @@ static void kvm_update_dr7(struct kvm_vcpu *vcpu) ...@@ -759,7 +759,9 @@ static void kvm_update_dr7(struct kvm_vcpu *vcpu)
else else
dr7 = vcpu->arch.dr7; dr7 = vcpu->arch.dr7;
kvm_x86_ops->set_dr7(vcpu, dr7); kvm_x86_ops->set_dr7(vcpu, dr7);
vcpu->arch.switch_db_regs = (dr7 & DR7_BP_EN_MASK); vcpu->arch.switch_db_regs &= ~KVM_DEBUGREG_BP_ENABLED;
if (dr7 & DR7_BP_EN_MASK)
vcpu->arch.switch_db_regs |= KVM_DEBUGREG_BP_ENABLED;
} }
static int __kvm_set_dr(struct kvm_vcpu *vcpu, int dr, unsigned long val) static int __kvm_set_dr(struct kvm_vcpu *vcpu, int dr, unsigned long val)
......
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