[PATCH 10/13] KVM: SVM: Add intercept checks for remaining twobyte instructions

[Joerg Roedel <joerg.roedel@xxxxxxx>]

This patch adds intercepts checks for the remaining twobyte
instructions to the KVM instruction emulator.

Signed-off-by: Joerg Roedel <joerg.roedel@xxxxxxx>
---
 arch/x86/include/asm/kvm_emulate.h |    2 ++
 arch/x86/kvm/emulate.c             |    8 ++++----
 arch/x86/kvm/svm.c                 |   19 +++++++++++++++++++
 3 files changed, 25 insertions(+), 4 deletions(-)

diff --git a/arch/x86/include/asm/kvm_emulate.h b/arch/x86/include/asm/kvm_emulate.h
index db744c9..41c0120 100644
--- a/arch/x86/include/asm/kvm_emulate.h
+++ b/arch/x86/include/asm/kvm_emulate.h
@@ -315,6 +315,8 @@ enum x86_intercept {
 	x86_intercept_wbinvd,
 	x86_intercept_monitor,
 	x86_intercept_mwait,
+	x86_intercept_rdmsr,
+	x86_intercept_wrmsr,
 
 	nr_x86_intercepts
 };
diff --git a/arch/x86/kvm/emulate.c b/arch/x86/kvm/emulate.c
index 0aaba1e..8947643 100644
--- a/arch/x86/kvm/emulate.c
+++ b/arch/x86/kvm/emulate.c
@@ -2550,8 +2550,8 @@ static struct opcode twobyte_table[256] = {
 	N, N, N, N,
 	N, N, N, N, N, N, N, N,
 	/* 0x30 - 0x3F */
-	D(ImplicitOps | Priv), II(ImplicitOps, em_rdtsc, rdtsc),
-	D(ImplicitOps | Priv), N,
+	DI(ImplicitOps | Priv, wrmsr), II(ImplicitOps, em_rdtsc, rdtsc),
+	DI(ImplicitOps | Priv, rdmsr), DI(ImplicitOps | Priv, rdpmc),
 	D(ImplicitOps | VendorSpecific), D(ImplicitOps | Priv | VendorSpecific),
 	N, N,
 	N, N, N, N, N, N, N, N,
@@ -2569,12 +2569,12 @@ static struct opcode twobyte_table[256] = {
 	X16(D(ByteOp | DstMem | SrcNone | ModRM| Mov)),
 	/* 0xA0 - 0xA7 */
 	D(ImplicitOps | Stack), D(ImplicitOps | Stack),
-	N, D(DstMem | SrcReg | ModRM | BitOp),
+	DI(ImplicitOps, cpuid), D(DstMem | SrcReg | ModRM | BitOp),
 	D(DstMem | SrcReg | Src2ImmByte | ModRM),
 	D(DstMem | SrcReg | Src2CL | ModRM), N, N,
 	/* 0xA8 - 0xAF */
 	D(ImplicitOps | Stack), D(ImplicitOps | Stack),
-	N, D(DstMem | SrcReg | ModRM | BitOp | Lock),
+	DI(ImplicitOps, rsm), D(DstMem | SrcReg | ModRM | BitOp | Lock),
 	D(DstMem | SrcReg | Src2ImmByte | ModRM),
 	D(DstMem | SrcReg | Src2CL | ModRM),
 	D(ModRM), I(DstReg | SrcMem | ModRM, em_imul),
diff --git a/arch/x86/kvm/svm.c b/arch/x86/kvm/svm.c
index 958697e..c2e90bb 100644
--- a/arch/x86/kvm/svm.c
+++ b/arch/x86/kvm/svm.c
@@ -3871,6 +3871,9 @@ static void svm_fpu_deactivate(struct kvm_vcpu *vcpu)
 	update_cr0_intercept(svm);
 }
 
+#define PRE_EX(exit)  { .exit_code = (exit), \
+			.stage = x86_icpt_pre_except, \
+			.valid = true }
 #define POST_EX(exit) { .exit_code = (exit), \
 			.stage = x86_icpt_post_except, \
 			.valid = true }
@@ -3910,8 +3913,18 @@ static struct __x86_intercept {
 	[x86_intercept_rdtscp]		= POST_EX(SVM_EXIT_RDTSCP),
 	[x86_intercept_monitor]		= POST_MEM(SVM_EXIT_MONITOR),
 	[x86_intercept_mwait]		= POST_EX(SVM_EXIT_MWAIT),
+	[x86_intercept_invlpg]		= POST_EX(SVM_EXIT_INVLPG),
+	[x86_intercept_invd]		= POST_EX(SVM_EXIT_INVD),
+	[x86_intercept_wbinvd]		= POST_EX(SVM_EXIT_WBINVD),
+	[x86_intercept_wrmsr]		= POST_EX(SVM_EXIT_MSR),
+	[x86_intercept_rdtsc]		= POST_EX(SVM_EXIT_RDTSC),
+	[x86_intercept_rdmsr]		= POST_EX(SVM_EXIT_MSR),
+	[x86_intercept_rdpmc]		= POST_EX(SVM_EXIT_RDPMC),
+	[x86_intercept_cpuid]		= PRE_EX(SVM_EXIT_CPUID),
+	[x86_intercept_rsm]		= PRE_EX(SVM_EXIT_RSM),
 };
 
+#undef PRE_EX
 #undef POST_EX
 #undef POST_MEM
 
@@ -3971,6 +3984,12 @@ static int svm_check_intercept(struct kvm_vcpu *vcpu,
 	case SVM_EXIT_WRITE_DR0:
 		icpt_info.exit_code += reg;
 		break;
+	case SVM_EXIT_MSR:
+		if (info->intercept == x86_intercept_wrmsr)
+			vmcb->control.exit_info_1 = 1;
+		else
+			vmcb->control.exit_info_1 = 0;
+		break;
 	default:
 		break;
 	}
-- 
1.7.1


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