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authorSean Christopherson <sean.j.christopherson@intel.com>2019-04-02 08:03:10 -0700
committerPaolo Bonzini <pbonzini@redhat.com>2019-04-16 15:37:36 +0200
commitc5833c7a43a66bfe2f36439cb2f1281a588668af (patch)
tree0b6e5e3898b4763ee73209a8dd4eeb38fe503f35 /arch
parented19321fb6571214f410b30322e4ad6e6b7c3915 (diff)
downloadlinux-c5833c7a43a66bfe2f36439cb2f1281a588668af.tar.bz2
KVM: x86: Open code kvm_set_hflags
Prepare for clearing HF_SMM_MASK prior to loading state from the SMRAM save state map, i.e. kvm_smm_changed() needs to be called after state has been loaded and so cannot be done automatically when setting hflags from RSM. Signed-off-by: Sean Christopherson <sean.j.christopherson@intel.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'arch')
-rw-r--r--arch/x86/include/asm/kvm_emulate.h1
-rw-r--r--arch/x86/kvm/emulate.c3
-rw-r--r--arch/x86/kvm/x86.c33
3 files changed, 19 insertions, 18 deletions
diff --git a/arch/x86/include/asm/kvm_emulate.h b/arch/x86/include/asm/kvm_emulate.h
index ec489c432850..feab24cac610 100644
--- a/arch/x86/include/asm/kvm_emulate.h
+++ b/arch/x86/include/asm/kvm_emulate.h
@@ -228,6 +228,7 @@ struct x86_emulate_ops {
void (*set_hflags)(struct x86_emulate_ctxt *ctxt, unsigned hflags);
int (*pre_leave_smm)(struct x86_emulate_ctxt *ctxt,
const char *smstate);
+ void (*post_leave_smm)(struct x86_emulate_ctxt *ctxt);
};
diff --git a/arch/x86/kvm/emulate.c b/arch/x86/kvm/emulate.c
index ae0d289b50fe..a6b282853253 100644
--- a/arch/x86/kvm/emulate.c
+++ b/arch/x86/kvm/emulate.c
@@ -2629,6 +2629,9 @@ static int em_rsm(struct x86_emulate_ctxt *ctxt)
ctxt->ops->set_hflags(ctxt, ctxt->ops->get_hflags(ctxt) &
~(X86EMUL_SMM_INSIDE_NMI_MASK | X86EMUL_SMM_MASK));
+
+ ctxt->ops->post_leave_smm(ctxt);
+
return X86EMUL_CONTINUE;
}
diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
index 6ee1f9e5d3fb..472bbbbe153a 100644
--- a/arch/x86/kvm/x86.c
+++ b/arch/x86/kvm/x86.c
@@ -3530,7 +3530,7 @@ static void kvm_vcpu_ioctl_x86_get_vcpu_events(struct kvm_vcpu *vcpu,
memset(&events->reserved, 0, sizeof(events->reserved));
}
-static void kvm_set_hflags(struct kvm_vcpu *vcpu, unsigned emul_flags);
+static void kvm_smm_changed(struct kvm_vcpu *vcpu);
static int kvm_vcpu_ioctl_x86_set_vcpu_events(struct kvm_vcpu *vcpu,
struct kvm_vcpu_events *events)
@@ -3590,12 +3590,13 @@ static int kvm_vcpu_ioctl_x86_set_vcpu_events(struct kvm_vcpu *vcpu,
vcpu->arch.apic->sipi_vector = events->sipi_vector;
if (events->flags & KVM_VCPUEVENT_VALID_SMM) {
- u32 hflags = vcpu->arch.hflags;
- if (events->smi.smm)
- hflags |= HF_SMM_MASK;
- else
- hflags &= ~HF_SMM_MASK;
- kvm_set_hflags(vcpu, hflags);
+ if (!!(vcpu->arch.hflags & HF_SMM_MASK) != events->smi.smm) {
+ if (events->smi.smm)
+ vcpu->arch.hflags |= HF_SMM_MASK;
+ else
+ vcpu->arch.hflags &= ~HF_SMM_MASK;
+ kvm_smm_changed(vcpu);
+ }
vcpu->arch.smi_pending = events->smi.pending;
@@ -5960,7 +5961,7 @@ static unsigned emulator_get_hflags(struct x86_emulate_ctxt *ctxt)
static void emulator_set_hflags(struct x86_emulate_ctxt *ctxt, unsigned emul_flags)
{
- kvm_set_hflags(emul_to_vcpu(ctxt), emul_flags);
+ emul_to_vcpu(ctxt)->arch.hflags = emul_flags;
}
static int emulator_pre_leave_smm(struct x86_emulate_ctxt *ctxt,
@@ -5969,6 +5970,11 @@ static int emulator_pre_leave_smm(struct x86_emulate_ctxt *ctxt,
return kvm_x86_ops->pre_leave_smm(emul_to_vcpu(ctxt), smstate);
}
+static void emulator_post_leave_smm(struct x86_emulate_ctxt *ctxt)
+{
+ kvm_smm_changed(emul_to_vcpu(ctxt));
+}
+
static const struct x86_emulate_ops emulate_ops = {
.read_gpr = emulator_read_gpr,
.write_gpr = emulator_write_gpr,
@@ -6009,6 +6015,7 @@ static const struct x86_emulate_ops emulate_ops = {
.get_hflags = emulator_get_hflags,
.set_hflags = emulator_set_hflags,
.pre_leave_smm = emulator_pre_leave_smm,
+ .post_leave_smm = emulator_post_leave_smm,
};
static void toggle_interruptibility(struct kvm_vcpu *vcpu, u32 mask)
@@ -6250,16 +6257,6 @@ static void kvm_smm_changed(struct kvm_vcpu *vcpu)
kvm_mmu_reset_context(vcpu);
}
-static void kvm_set_hflags(struct kvm_vcpu *vcpu, unsigned emul_flags)
-{
- unsigned changed = vcpu->arch.hflags ^ emul_flags;
-
- vcpu->arch.hflags = emul_flags;
-
- if (changed & HF_SMM_MASK)
- kvm_smm_changed(vcpu);
-}
-
static int kvm_vcpu_check_hw_bp(unsigned long addr, u32 type, u32 dr7,
unsigned long *db)
{