Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net

[sfrench/cifs-2.6.git] / arch / x86 / kvm / x86.c

diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
index 3ed167e039e54f7089d88705ec1718d4d4840d8c..cf917139de6ba272f01aac132d9f0c8b3f2b2c2b 100644 (file)
--- a/arch/x86/kvm/x86.c
+++ b/arch/x86/kvm/x86.c
@@ -68,6 +68,7 @@
 #include <asm/mshyperv.h>
 #include <asm/hypervisor.h>
 #include <asm/intel_pt.h>
+#include <asm/emulate_prefix.h>
 #include <clocksource/hyperv_timer.h>
 
 #define CREATE_TRACE_POINTS
@@ -5492,6 +5493,7 @@ EXPORT_SYMBOL_GPL(kvm_write_guest_virt_system);
 
 int handle_ud(struct kvm_vcpu *vcpu)
 {
+       static const char kvm_emulate_prefix[] = { __KVM_EMULATE_PREFIX };
        int emul_type = EMULTYPE_TRAP_UD;
        char sig[5]; /* ud2; .ascii "kvm" */
        struct x86_exception e;
@@ -5499,7 +5501,7 @@ int handle_ud(struct kvm_vcpu *vcpu)
        if (force_emulation_prefix &&
            kvm_read_guest_virt(vcpu, kvm_get_linear_rip(vcpu),
                                sig, sizeof(sig), &e) == 0 &&
-           memcmp(sig, "\xf\xbkvm", sizeof(sig)) == 0) {
+           memcmp(sig, kvm_emulate_prefix, sizeof(sig)) == 0) {
                kvm_rip_write(vcpu, kvm_rip_read(vcpu) + sizeof(sig));
                emul_type = EMULTYPE_TRAP_UD_FORCED;
        }