[PATCH v13 01/11] KVM: x86: Include CET definitions for KVM test purpose

[Yang Weijiang]

These definitions are added by CET kernel patch and referenced by KVM,
if the CET KVM patches are tested without CET kernel patches, this patch
should be included.

Signed-off-by: Yang Weijiang <weijiang.yang@xxxxxxxxx>
---
 include/linux/kvm_host.h | 32 ++++++++++++++++++++++++++++++++
 1 file changed, 32 insertions(+)

diff --git a/include/linux/kvm_host.h b/include/linux/kvm_host.h
index 01276e3d01b9..20e0fe70d3f7 100644
--- a/include/linux/kvm_host.h
+++ b/include/linux/kvm_host.h
@@ -35,6 +35,38 @@
 
 #include <asm/kvm_host.h>
 
+#ifndef CONFIG_X86_INTEL_CET
+#define XFEATURE_CET_USER   11
+#define XFEATURE_CET_KERNEL 12
+
+#define XFEATURE_MASK_CET_USER         (1 << XFEATURE_CET_USER)
+#define XFEATURE_MASK_CET_KERNEL       (1 << XFEATURE_CET_KERNEL)
+
+/* Control-flow Enforcement Technology MSRs */
+#define MSR_IA32_U_CET         0x6a0 /* user mode cet setting */
+#define MSR_IA32_S_CET         0x6a2 /* kernel mode cet setting */
+#define MSR_IA32_PL0_SSP       0x6a4 /* kernel shstk pointer */
+#define MSR_IA32_PL1_SSP       0x6a5 /* ring-1 shstk pointer */
+#define MSR_IA32_PL2_SSP       0x6a6 /* ring-2 shstk pointer */
+#define MSR_IA32_PL3_SSP       0x6a7 /* user shstk pointer */
+#define MSR_IA32_INT_SSP_TAB   0x6a8 /* exception shstk table */
+
+#define X86_CR4_CET_BIT        23 /* enable Control-flow Enforcement */
+#define X86_CR4_CET            _BITUL(X86_CR4_CET_BIT)
+
+#define X86_FEATURE_SHSTK      (16*32+ 7) /* Shadow Stack */
+#define X86_FEATURE_IBT        (18*32+20) /* Indirect Branch Tracking */
+
+/* MSR_IA32_U_CET and MSR_IA32_S_CET bits */
+#define MSR_IA32_CET_SHSTK_EN          0x0000000000000001ULL
+#define MSR_IA32_CET_WRSS_EN           0x0000000000000002ULL
+#define MSR_IA32_CET_ENDBR_EN          0x0000000000000004ULL
+#define MSR_IA32_CET_LEG_IW_EN         0x0000000000000008ULL
+#define MSR_IA32_CET_NO_TRACK_EN       0x0000000000000010ULL
+#define MSR_IA32_CET_WAIT_ENDBR        0x00000000000000800UL
+#define MSR_IA32_CET_BITMAP_MASK       0xfffffffffffff000ULL
+#endif
+
 #ifndef KVM_MAX_VCPU_ID
 #define KVM_MAX_VCPU_ID KVM_MAX_VCPUS
 #endif
-- 
2.17.2