Messages in this thread Patch in this message |  | | | From | Avi Kivity <> | | Subject | [PATCH 10/10] KVM: VMX: Reset mmu context when entering real mode | | Date | Sun, 2 Dec 2007 13:18:47 +0200 |
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From: Eddie Dong <eddie.dong@intel.com>
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> --- drivers/kvm/mmu.c | 1 + drivers/kvm/vmx.c | 1 + 2 files changed, 2 insertions(+), 0 deletions(-) diff --git a/drivers/kvm/mmu.c b/drivers/kvm/mmu.c index 23965aa..56ab369 100644 --- a/drivers/kvm/mmu.c +++ b/drivers/kvm/mmu.c @@ -1066,6 +1066,7 @@ int kvm_mmu_reset_context(struct kvm_vcpu *vcpu) destroy_kvm_mmu(vcpu); return init_kvm_mmu(vcpu); } +EXPORT_SYMBOL_GPL(kvm_mmu_reset_context); int kvm_mmu_load(struct kvm_vcpu *vcpu) { diff --git a/drivers/kvm/vmx.c b/drivers/kvm/vmx.c index c158a2d..916da29 100644 --- a/drivers/kvm/vmx.c +++ b/drivers/kvm/vmx.c @@ -957,6 +957,7 @@ static void enter_rmode(struct kvm_vcpu *vcpu) fix_rmode_seg(VCPU_SREG_GS, &vcpu->rmode.gs); fix_rmode_seg(VCPU_SREG_FS, &vcpu->rmode.fs); + kvm_mmu_reset_context(vcpu); init_rmode_tss(vcpu->kvm); } -- 1.5.3
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