[PATCH v3 5/9] KVM: SVM: Extend VMCB area for virtualized IBS registers

[Manali Shukla <manali.shukla@amd.com>]

From: Santosh Shukla <santosh.shukla@amd.com>

Define the new VMCB fields that will be used to save and restore the
state of the following fetch and op IBS related MSRs.

  * MSRC001_1030 [IBS Fetch Control]
  * MSRC001_1031 [IBS Fetch Linear Address]
  * MSRC001_1033 [IBS Execution Control]
  * MSRC001_1034 [IBS Op Logical Address]
  * MSRC001_1035 [IBS Op Data]
  * MSRC001_1036 [IBS Op Data 2]
  * MSRC001_1037 [IBS Op Data 3]
  * MSRC001_1038 [IBS DC Linear Address]
  * MSRC001_103B [IBS Branch Target Address]
  * MSRC001_103C [IBS Fetch Control Extended]

Signed-off-by: Santosh Shukla <santosh.shukla@amd.com>
Signed-off-by: Manali Shukla <manali.shukla@amd.com>
---
 arch/x86/include/asm/svm.h | 14 +++++++++++++-
 1 file changed, 13 insertions(+), 1 deletion(-)

diff --git a/arch/x86/include/asm/svm.h b/arch/x86/include/asm/svm.h
index bcfeb5e7c0ed..4296efc1dafe 100644
--- a/arch/x86/include/asm/svm.h
+++ b/arch/x86/include/asm/svm.h
@@ -369,6 +369,17 @@ struct vmcb_save_area {
 	u64 last_excp_to;
 	u8 reserved_0x298[72];
 	u64 spec_ctrl;		/* Guest version of SPEC_CTRL at 0x2E0 */
+	u8 reserved_0x2e8[1168];
+	u64 ibs_fetch_ctl;
+	u64 ibs_fetch_linear_addr;
+	u64 ibs_op_ctl;
+	u64 ibs_op_rip;
+	u64 ibs_op_data;
+	u64 ibs_op_data2;
+	u64 ibs_op_data3;
+	u64 ibs_dc_linear_addr;
+	u64 ibs_br_target;
+	u64 ibs_fetch_extd_ctl;
 } __packed;
 
 /* Save area definition for SEV-ES and SEV-SNP guests */
@@ -551,7 +562,7 @@ struct vmcb {
 	};
 } __packed;
 
-#define EXPECTED_VMCB_SAVE_AREA_SIZE		744
+#define EXPECTED_VMCB_SAVE_AREA_SIZE		1992
 #define EXPECTED_GHCB_SAVE_AREA_SIZE		1032
 #define EXPECTED_SEV_ES_SAVE_AREA_SIZE		1648
 #define EXPECTED_VMCB_CONTROL_AREA_SIZE		1024
@@ -577,6 +588,7 @@ static inline void __unused_size_checks(void)
 	BUILD_BUG_RESERVED_OFFSET(vmcb_save_area, 0x180);
 	BUILD_BUG_RESERVED_OFFSET(vmcb_save_area, 0x248);
 	BUILD_BUG_RESERVED_OFFSET(vmcb_save_area, 0x298);
+	BUILD_BUG_RESERVED_OFFSET(vmcb_save_area, 0x2e8);
 
 	BUILD_BUG_RESERVED_OFFSET(sev_es_save_area, 0xc8);
 	BUILD_BUG_RESERVED_OFFSET(sev_es_save_area, 0xcc);
-- 
2.43.0