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authorNadav Amit <namit@cs.technion.ac.il>2014-06-18 17:19:26 +0300
committerPaolo Bonzini <pbonzini@redhat.com>2014-06-19 12:52:15 +0200
commit27e6fb5dae2819d17f38dc9224692b771e989981 (patch)
treea70eb57477af54459b6d97f9e34156eaf01ed6b2 /arch/x86/kvm/x86.h
parent1e32c07955b43e7f827174bf320ed35971117275 (diff)
downloadlinux-27e6fb5dae2819d17f38dc9224692b771e989981.tar.bz2
KVM: vmx: vmx instructions handling does not consider cs.l
VMX instructions use 32-bit operands in 32-bit mode, and 64-bit operands in 64-bit mode. The current implementation is broken since it does not use the register operands correctly, and always uses 64-bit for reads and writes. Moreover, write to memory in vmwrite only considers long-mode, so it ignores cs.l. This patch fixes this behavior. Signed-off-by: Nadav Amit <namit@cs.technion.ac.il> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'arch/x86/kvm/x86.h')
-rw-r--r--arch/x86/kvm/x86.h9
1 files changed, 9 insertions, 0 deletions
diff --git a/arch/x86/kvm/x86.h b/arch/x86/kvm/x86.h
index c5b61a7eb144..306a1b77581f 100644
--- a/arch/x86/kvm/x86.h
+++ b/arch/x86/kvm/x86.h
@@ -126,6 +126,15 @@ static inline unsigned long kvm_register_readl(struct kvm_vcpu *vcpu,
return is_64_bit_mode(vcpu) ? val : (u32)val;
}
+static inline void kvm_register_writel(struct kvm_vcpu *vcpu,
+ enum kvm_reg reg,
+ unsigned long val)
+{
+ if (!is_64_bit_mode(vcpu))
+ val = (u32)val;
+ return kvm_register_write(vcpu, reg, val);
+}
+
void kvm_before_handle_nmi(struct kvm_vcpu *vcpu);
void kvm_after_handle_nmi(struct kvm_vcpu *vcpu);
int kvm_inject_realmode_interrupt(struct kvm_vcpu *vcpu, int irq, int inc_eip);