android/android_kernel_xiaomi_sm8450
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KVM: VMX: Reinitialize the real-mode tss when entering real mode

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Protected mode code may have corrupted the real-mode tss, so re-initialize
it when switching to real mode.

Signed-off-by: Avi Kivity <avi@qumranet.com>
This commit is contained in:
Avi Kivity
2007-06-20 11:20:04 +03:00
parent a3c870bdce
commit 75880a0112
1 changed files with 4 additions and 0 deletions
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4
drivers/kvm/vmx.c
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@ -31,6 +31,8 @@
MODULE_AUTHOR("Qumranet"); MODULE_AUTHOR("Qumranet");
MODULE_LICENSE("GPL"); MODULE_LICENSE("GPL");
static int init_rmode_tss(struct kvm *kvm);
static DEFINE_PER_CPU(struct vmcs *, vmxarea); static DEFINE_PER_CPU(struct vmcs *, vmxarea);
static DEFINE_PER_CPU(struct vmcs *, current_vmcs); static DEFINE_PER_CPU(struct vmcs *, current_vmcs);
@ -951,6 +953,8 @@ static void enter_rmode(struct kvm_vcpu *vcpu)
fix_rmode_seg(VCPU_SREG_DS, &vcpu->rmode.ds); fix_rmode_seg(VCPU_SREG_DS, &vcpu->rmode.ds);
fix_rmode_seg(VCPU_SREG_GS, &vcpu->rmode.gs); fix_rmode_seg(VCPU_SREG_GS, &vcpu->rmode.gs);
fix_rmode_seg(VCPU_SREG_FS, &vcpu->rmode.fs); fix_rmode_seg(VCPU_SREG_FS, &vcpu->rmode.fs);
init_rmode_tss(vcpu->kvm);
} }
#ifdef CONFIG_X86_64 #ifdef CONFIG_X86_64