diff options
Diffstat (limited to 'arch/x86')
| -rw-r--r-- | arch/x86/include/asm/kvm_host.h | 1 | ||||
| -rw-r--r-- | arch/x86/kvm/vmx.c | 20 |
2 files changed, 15 insertions, 6 deletions
diff --git a/arch/x86/include/asm/kvm_host.h b/arch/x86/include/asm/kvm_host.h index c8af0991fdf0..5af426464954 100644 --- a/arch/x86/include/asm/kvm_host.h +++ b/arch/x86/include/asm/kvm_host.h @@ -118,6 +118,7 @@ enum kvm_reg { enum kvm_reg_ex { VCPU_EXREG_PDPTR = NR_VCPU_REGS, VCPU_EXREG_CR3, + VCPU_EXREG_RFLAGS, }; enum { diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c index d09833e45f6f..4d117072acf8 100644 --- a/arch/x86/kvm/vmx.c +++ b/arch/x86/kvm/vmx.c @@ -130,6 +130,7 @@ struct vcpu_vmx { u8 fail; u32 exit_intr_info; u32 idt_vectoring_info; + ulong rflags; struct shared_msr_entry *guest_msrs; int nmsrs; int save_nmsrs; @@ -970,17 +971,23 @@ static unsigned long vmx_get_rflags(struct kvm_vcpu *vcpu) { unsigned long rflags, save_rflags; - rflags = vmcs_readl(GUEST_RFLAGS); - if (to_vmx(vcpu)->rmode.vm86_active) { - rflags &= RMODE_GUEST_OWNED_EFLAGS_BITS; - save_rflags = to_vmx(vcpu)->rmode.save_rflags; - rflags |= save_rflags & ~RMODE_GUEST_OWNED_EFLAGS_BITS; + if (!test_bit(VCPU_EXREG_RFLAGS, (ulong *)&vcpu->arch.regs_avail)) { + __set_bit(VCPU_EXREG_RFLAGS, (ulong *)&vcpu->arch.regs_avail); + rflags = vmcs_readl(GUEST_RFLAGS); + if (to_vmx(vcpu)->rmode.vm86_active) { + rflags &= RMODE_GUEST_OWNED_EFLAGS_BITS; + save_rflags = to_vmx(vcpu)->rmode.save_rflags; + rflags |= save_rflags & ~RMODE_GUEST_OWNED_EFLAGS_BITS; + } + to_vmx(vcpu)->rflags = rflags; } - return rflags; + return to_vmx(vcpu)->rflags; } static void vmx_set_rflags(struct kvm_vcpu *vcpu, unsigned long rflags) { + __set_bit(VCPU_EXREG_RFLAGS, (ulong *)&vcpu->arch.regs_avail); + to_vmx(vcpu)->rflags = rflags; if (to_vmx(vcpu)->rmode.vm86_active) { to_vmx(vcpu)->rmode.save_rflags = rflags; rflags |= X86_EFLAGS_IOPL | X86_EFLAGS_VM; @@ -4124,6 +4131,7 @@ static void __noclone vmx_vcpu_run(struct kvm_vcpu *vcpu) ); vcpu->arch.regs_avail = ~((1 << VCPU_REGS_RIP) | (1 << VCPU_REGS_RSP) + | (1 << VCPU_EXREG_RFLAGS) | (1 << VCPU_EXREG_PDPTR) | (1 << VCPU_EXREG_CR3)); vcpu->arch.regs_dirty = 0; |