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authorEddie Dong <eddie.dong@intel.com>2007-10-10 02:26:45 -0400
committerAvi Kivity <avi@qumranet.com>2007-10-22 06:03:28 -0400
commit8668a3c468ed55d19514117a5a959d91d3d03823 (patch)
tree3744b15b77dfdc6457225d69ee76d255b62ff94e /drivers/kvm
parent1b6269db3f83396c2fd2c8d0f3e0f37ac0e6ba05 (diff)
KVM: VMX: Reset mmu context when entering real mode
Resetting an SMP guest will force AP enter real mode (RESET) with paging enabled in protected mode. While current enter_rmode() can only handle mode switch from nonpaging mode to real mode which leads to SMP reboot failure. Fix by reloading the mmu context on entering real mode. Signed-off-by: Yaozu (Eddie) Dong <eddie.dong@intel.com> Signed-off-by: Qing He <qing.he@intel.com> Signed-off-by: Avi Kivity <avi@qumranet.com>
Diffstat (limited to 'drivers/kvm')
-rw-r--r--drivers/kvm/mmu.c1
-rw-r--r--drivers/kvm/vmx.c1
2 files changed, 2 insertions, 0 deletions
diff --git a/drivers/kvm/mmu.c b/drivers/kvm/mmu.c
index 71716182d59d..feb5ac986c5d 100644
--- a/drivers/kvm/mmu.c
+++ b/drivers/kvm/mmu.c
@@ -1049,6 +1049,7 @@ int kvm_mmu_reset_context(struct kvm_vcpu *vcpu)
1049 destroy_kvm_mmu(vcpu); 1049 destroy_kvm_mmu(vcpu);
1050 return init_kvm_mmu(vcpu); 1050 return init_kvm_mmu(vcpu);
1051} 1051}
1052EXPORT_SYMBOL_GPL(kvm_mmu_reset_context);
1052 1053
1053int kvm_mmu_load(struct kvm_vcpu *vcpu) 1054int kvm_mmu_load(struct kvm_vcpu *vcpu)
1054{ 1055{
diff --git a/drivers/kvm/vmx.c b/drivers/kvm/vmx.c
index bcc1e398a976..f130c01422cf 100644
--- a/drivers/kvm/vmx.c
+++ b/drivers/kvm/vmx.c
@@ -1128,6 +1128,7 @@ static void enter_rmode(struct kvm_vcpu *vcpu)
1128 fix_rmode_seg(VCPU_SREG_GS, &vcpu->rmode.gs); 1128 fix_rmode_seg(VCPU_SREG_GS, &vcpu->rmode.gs);
1129 fix_rmode_seg(VCPU_SREG_FS, &vcpu->rmode.fs); 1129 fix_rmode_seg(VCPU_SREG_FS, &vcpu->rmode.fs);
1130 1130
1131 kvm_mmu_reset_context(vcpu);
1131 init_rmode_tss(vcpu->kvm); 1132 init_rmode_tss(vcpu->kvm);
1132} 1133}
1133 1134