Make vendor_intel generic so that functions in x86.c
can use it.
v2:
Change vendor_intel function signature because the emulator
shouldn't be dealing with struct vcpu
Signed-off-by: Bandan Das <bsd@xxxxxxxxxx>
---
arch/x86/include/asm/kvm_emulate.h | 13 -------------
arch/x86/include/asm/kvm_host.h | 20 ++++++++++++++++++++
arch/x86/kvm/emulate.c | 16 ++++------------
3 files changed, 24 insertions(+), 25 deletions(-)
diff --git a/arch/x86/include/asm/kvm_emulate.h b/arch/x86/include/asm/kvm_emulate.h
index 15f960c..611a55f 100644
--- a/arch/x86/include/asm/kvm_emulate.h
+++ b/arch/x86/include/asm/kvm_emulate.h
@@ -319,19 +319,6 @@ struct x86_emulate_ctxt {
#define REPE_PREFIX 0xf3
#define REPNE_PREFIX 0xf2
-/* CPUID vendors */
-#define X86EMUL_CPUID_VENDOR_AuthenticAMD_ebx 0x68747541
-#define X86EMUL_CPUID_VENDOR_AuthenticAMD_ecx 0x444d4163
-#define X86EMUL_CPUID_VENDOR_AuthenticAMD_edx 0x69746e65
-
-#define X86EMUL_CPUID_VENDOR_AMDisbetterI_ebx 0x69444d41
-#define X86EMUL_CPUID_VENDOR_AMDisbetterI_ecx 0x21726574
-#define X86EMUL_CPUID_VENDOR_AMDisbetterI_edx 0x74656273
-
-#define X86EMUL_CPUID_VENDOR_GenuineIntel_ebx 0x756e6547
-#define X86EMUL_CPUID_VENDOR_GenuineIntel_ecx 0x6c65746e
-#define X86EMUL_CPUID_VENDOR_GenuineIntel_edx 0x49656e69
-
enum x86_intercept_stage {
X86_ICTP_NONE = 0, /* Allow zero-init to not match anything */
X86_ICPT_PRE_EXCEPT,
diff --git a/arch/x86/include/asm/kvm_host.h b/arch/x86/include/asm/kvm_host.h
index 3741c65..ce9a44f 100644
--- a/arch/x86/include/asm/kvm_host.h
+++ b/arch/x86/include/asm/kvm_host.h
@@ -144,6 +144,19 @@ enum {
#include <asm/kvm_emulate.h>
+/* CPUID vendors */
+#define X86EMUL_CPUID_VENDOR_AuthenticAMD_ebx 0x68747541
+#define X86EMUL_CPUID_VENDOR_AuthenticAMD_ecx 0x444d4163
+#define X86EMUL_CPUID_VENDOR_AuthenticAMD_edx 0x69746e65
+
+#define X86EMUL_CPUID_VENDOR_AMDisbetterI_ebx 0x69444d41
+#define X86EMUL_CPUID_VENDOR_AMDisbetterI_ecx 0x21726574
+#define X86EMUL_CPUID_VENDOR_AMDisbetterI_edx 0x74656273
+
+#define X86EMUL_CPUID_VENDOR_GenuineIntel_ebx 0x756e6547
+#define X86EMUL_CPUID_VENDOR_GenuineIntel_ecx 0x6c65746e
+#define X86EMUL_CPUID_VENDOR_GenuineIntel_edx 0x49656e69
+
#define KVM_NR_MEM_OBJS 40
#define KVM_NR_DB_REGS 4
@@ -942,6 +955,13 @@ static inline unsigned long read_msr(unsigned long msr)
}
#endif
+static inline bool vendor_intel(u32 ebx, u32 ecx, u32 edx)
+{
+ return ebx == X86EMUL_CPUID_VENDOR_GenuineIntel_ebx
+ && ecx == X86EMUL_CPUID_VENDOR_GenuineIntel_ecx
+ && edx == X86EMUL_CPUID_VENDOR_GenuineIntel_edx;
+}
+
static inline u32 get_rdx_init_val(void)
{
return 0x600; /* P6 family */
diff --git a/arch/x86/kvm/emulate.c b/arch/x86/kvm/emulate.c
index 8db0010..87f12fc 100644
--- a/arch/x86/kvm/emulate.c
+++ b/arch/x86/kvm/emulate.c
@@ -2280,17 +2280,6 @@ setup_syscalls_segments(struct x86_emulate_ctxt *ctxt,
ss->avl = 0;
}
-static bool vendor_intel(struct x86_emulate_ctxt *ctxt)
-{
- u32 eax, ebx, ecx, edx;
-
- eax = ecx = 0;
- ctxt->ops->get_cpuid(ctxt, &eax, &ebx, &ecx, &edx);
- return ebx == X86EMUL_CPUID_VENDOR_GenuineIntel_ebx
- && ecx == X86EMUL_CPUID_VENDOR_GenuineIntel_ecx
- && edx == X86EMUL_CPUID_VENDOR_GenuineIntel_edx;
-}
-
static bool em_syscall_is_enabled(struct x86_emulate_ctxt *ctxt)
{
const struct x86_emulate_ops *ops = ctxt->ops;
@@ -2400,6 +2389,7 @@ static int em_sysenter(struct x86_emulate_ctxt *ctxt)
u64 msr_data;
u16 cs_sel, ss_sel;
u64 efer = 0;
+ u32 eax, ebx, ecx, edx;
ops->get_msr(ctxt, MSR_EFER, &efer);
/* inject #GP if in real mode */
@@ -2410,8 +2400,10 @@ static int em_sysenter(struct x86_emulate_ctxt *ctxt)
* Not recognized on AMD in compat mode (but is recognized in legacy
* mode).
*/
+ eax = ecx = 0;
+ ctxt->ops->get_cpuid(ctxt, &eax, &ebx, &ecx, &edx);
if ((ctxt->mode == X86EMUL_MODE_PROT32) && (efer & EFER_LMA)
- && !vendor_intel(ctxt))
+ && !vendor_intel(ebx, ecx, edx))
return emulate_ud(ctxt);
/* XXX sysenter/sysexit have not been tested in 64bit mode.
--
1.8.1.4
--
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