diff mbox

[v3,2/4] KVM: X86: Add arrays to save/restore LBR MSRs

Message ID 1447770158-16996-3-git-send-email-jianjay.zhou@huawei.com (mailing list archive)
State New, archived
Headers show

Commit Message

Zhoujian (jay) Nov. 17, 2015, 2:22 p.m. UTC 
Add arrays in kvm_vcpu_arch struct to save/restore
host/guest LBR MSRs at vm exit/entry time.

Signed-off-by: Jian Zhou <jianjay.zhou@huawei.com>
Signed-off-by: Stephen He <herongguang.he@huawei.com>
---
 arch/x86/include/asm/kvm_host.h | 22 ++++++++++++++++------
 1 file changed, 16 insertions(+), 6 deletions(-)

--
1.7.12.4


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diff mbox

Patch

diff --git a/arch/x86/include/asm/kvm_host.h b/arch/x86/include/asm/kvm_host.h
index 3a36ee7..ac0c745 100644
--- a/arch/x86/include/asm/kvm_host.h
+++ b/arch/x86/include/asm/kvm_host.h
@@ -91,6 +91,7 @@  static inline gfn_t gfn_to_index(gfn_t gfn, gfn_t base_gfn, int level)
 #define KVM_MAX_CPUID_ENTRIES 80
 #define KVM_NR_FIXED_MTRR_REGION 88
 #define KVM_NR_VAR_MTRR 8
+#define KVM_MAX_LBR_MSRS 128

 #define ASYNC_PF_PER_VCPU 64

@@ -376,6 +377,12 @@  struct kvm_vcpu_hv {
 	u64 hv_vapic;
 };

+struct msr_data {
+	bool host_initiated;
+	u32 index;
+	u64 data;
+};
+
 struct kvm_vcpu_arch {
 	/*
 	 * rip and regs accesses must go through
@@ -516,6 +523,15 @@  struct kvm_vcpu_arch {
 	unsigned long eff_db[KVM_NR_DB_REGS];
 	unsigned long guest_debug_dr7;

+	int lbr_status;
+	int lbr_used;
+
+	struct lbr_msr {
+		unsigned nr;
+		struct msr_data guest[KVM_MAX_LBR_MSRS];
+		struct msr_data host[KVM_MAX_LBR_MSRS];
+	} lbr_msr;
+
 	u64 mcg_cap;
 	u64 mcg_status;
 	u64 mcg_ctl;
@@ -728,12 +744,6 @@  struct kvm_vcpu_stat {

 struct x86_instruction_info;

-struct msr_data {
-	bool host_initiated;
-	u32 index;
-	u64 data;
-};
-
 struct kvm_lapic_irq {
 	u32 vector;
 	u16 delivery_mode;