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Subject[patch v2 5/8] KVM: x86: add Intel processor trace context for each vcpu
Date
From: Chao Peng <chao.p.peng@linux.intel.com>

Add a date structure to save Intel processor trace context.
It mainly include all the MSR of Intel processor trace.

Signed-off-by: Chao Peng <chao.p.peng@linux.intel.com>
Signed-off-by: Luwei Kang <luwei.kang@intel.com>
---
arch/x86/include/asm/msr-index.h | 1 +
arch/x86/include/asm/vmx.h | 2 ++
arch/x86/kvm/vmx.c | 17 +++++++++++++++++
3 files changed, 20 insertions(+)

diff --git a/arch/x86/include/asm/msr-index.h b/arch/x86/include/asm/msr-index.h
index 57433e4..96124c8 100644
--- a/arch/x86/include/asm/msr-index.h
+++ b/arch/x86/include/asm/msr-index.h
@@ -135,6 +135,7 @@
#define MSR_IA32_RTIT_ADDR2_B 0x00000585
#define MSR_IA32_RTIT_ADDR3_A 0x00000586
#define MSR_IA32_RTIT_ADDR3_B 0x00000587
+#define MSR_IA32_RTIT_ADDR_COUNT 8
#define MSR_IA32_RTIT_CR3_MATCH 0x00000572
#define MSR_IA32_RTIT_OUTPUT_BASE 0x00000560
#define MSR_IA32_RTIT_OUTPUT_MASK 0x00000561
diff --git a/arch/x86/include/asm/vmx.h b/arch/x86/include/asm/vmx.h
index 80e3e22..6293803 100644
--- a/arch/x86/include/asm/vmx.h
+++ b/arch/x86/include/asm/vmx.h
@@ -240,6 +240,8 @@ enum vmcs_field {
GUEST_PDPTR3_HIGH = 0x00002811,
GUEST_BNDCFGS = 0x00002812,
GUEST_BNDCFGS_HIGH = 0x00002813,
+ GUEST_IA32_RTIT_CTL = 0x00002814,
+ GUEST_IA32_RTIT_CTL_HIGH = 0x00002815,
HOST_IA32_PAT = 0x00002c00,
HOST_IA32_PAT_HIGH = 0x00002c01,
HOST_IA32_EFER = 0x00002c02,
diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c
index 26fe9e7..7eaf774 100644
--- a/arch/x86/kvm/vmx.c
+++ b/arch/x86/kvm/vmx.c
@@ -566,6 +566,21 @@ static inline int pi_test_sn(struct pi_desc *pi_desc)
(unsigned long *)&pi_desc->control);
}

+struct pt_ctx {
+ u64 ctl;
+ u64 status;
+ u64 output_base;
+ u64 output_mask;
+ u64 cr3_match;
+ u64 addrs[MSR_IA32_RTIT_ADDR_COUNT];
+};
+
+struct pt_desc {
+ unsigned int addr_num;
+ struct pt_ctx host;
+ struct pt_ctx guest;
+};
+
struct vcpu_vmx {
struct kvm_vcpu vcpu;
unsigned long host_rsp;
@@ -655,6 +670,8 @@ struct vcpu_vmx {
*/
u64 msr_ia32_feature_control;
u64 msr_ia32_feature_control_valid_bits;
+
+ struct pt_desc pt_desc;
};

enum segment_cache_field {
--
1.8.3.1
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