On 12/13/2023 4:46 AM, Sagi Shahar wrote:
From: Ackerley Tng <ackerleytng@xxxxxxxxxx>
Signed-off-by: Ackerley Tng <ackerleytng@xxxxxxxxxx>
Signed-off-by: Ryan Afranji <afranji@xxxxxxxxxx>
Signed-off-by: Sagi Shahar <sagis@xxxxxxxxxx>
---
.../selftests/kvm/include/x86_64/tdx/tdx.h | 21 +++++++++++++++++++
.../selftests/kvm/lib/x86_64/tdx/tdx.c | 19 +++++++++++++++++
2 files changed, 40 insertions(+)
Reviewed-by: Binbin Wu <binbin.wu@xxxxxxxxxxxxxxx>
diff --git a/tools/testing/selftests/kvm/include/x86_64/tdx/tdx.h b/tools/testing/selftests/kvm/include/x86_64/tdx/tdx.h
index b71bcea40b5c..12863a8beaae 100644
--- a/tools/testing/selftests/kvm/include/x86_64/tdx/tdx.h
+++ b/tools/testing/selftests/kvm/include/x86_64/tdx/tdx.h
@@ -6,6 +6,7 @@
#include "kvm_util_base.h"
#define TDG_VP_INFO 1
+#define TDG_VP_VEINFO_GET 3
#define TDG_MEM_PAGE_ACCEPT 6
#define TDG_VP_VMCALL_GET_TD_VM_CALL_INFO 0x10000
@@ -41,4 +42,24 @@ uint64_t tdg_vp_info(uint64_t *rcx, uint64_t *rdx,
uint64_t tdg_vp_vmcall_map_gpa(uint64_t address, uint64_t size, uint64_t *data_out);
uint64_t tdg_mem_page_accept(uint64_t gpa, uint8_t level);
+/*
+ * Used by the #VE exception handler to gather the #VE exception
+ * info from the TDX module. This is a software only structure
+ * and not part of the TDX module/VMM ABI.
+ *
+ * Adapted from arch/x86/include/asm/tdx.h
+ */
+struct ve_info {
+ uint64_t exit_reason;
+ uint64_t exit_qual;
+ /* Guest Linear (virtual) Address */
+ uint64_t gla;
+ /* Guest Physical Address */
+ uint64_t gpa;
+ uint32_t instr_len;
+ uint32_t instr_info;
+};
+
+uint64_t tdg_vp_veinfo_get(struct ve_info *ve);
+
#endif // SELFTEST_TDX_TDX_H
diff --git a/tools/testing/selftests/kvm/lib/x86_64/tdx/tdx.c b/tools/testing/selftests/kvm/lib/x86_64/tdx/tdx.c
index d8c4ab635c06..71d9f55007f7 100644
--- a/tools/testing/selftests/kvm/lib/x86_64/tdx/tdx.c
+++ b/tools/testing/selftests/kvm/lib/x86_64/tdx/tdx.c
@@ -241,3 +241,22 @@ uint64_t tdg_mem_page_accept(uint64_t gpa, uint8_t level)
{
return __tdx_module_call(TDG_MEM_PAGE_ACCEPT, gpa | level, 0, 0, 0, NULL);
}
+
+uint64_t tdg_vp_veinfo_get(struct ve_info *ve)
+{
+ uint64_t ret;
+ struct tdx_module_output out;
+
+ memset(&out, 0, sizeof(struct tdx_module_output));
+
+ ret = __tdx_module_call(TDG_VP_VEINFO_GET, 0, 0, 0, 0, &out);
+
+ ve->exit_reason = out.rcx;
+ ve->exit_qual = out.rdx;
+ ve->gla = out.r8;
+ ve->gpa = out.r9;
+ ve->instr_len = out.r10 & 0xffffffff;
+ ve->instr_info = out.r10 >> 32;
+
+ return ret;
+}
