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Tue, 12 Dec 2023 12:47:45 -0800 (PST) Date: Tue, 12 Dec 2023 12:46:41 -0800 In-Reply-To: <20231212204647.2170650-1-sagis@google.com> Mime-Version: 1.0 References: <20231212204647.2170650-1-sagis@google.com> X-Mailer: git-send-email 2.43.0.472.g3155946c3a-goog Message-ID: <20231212204647.2170650-27-sagis@google.com> Subject: [RFC PATCH v5 26/29] KVM: selftests: TDX: Add support for TDG.VP.VEINFO.GET From: Sagi Shahar To: linux-kselftest@vger.kernel.org, Ackerley Tng , Ryan Afranji , Erdem Aktas , Sagi Shahar , Isaku Yamahata Cc: Sean Christopherson , Paolo Bonzini , Shuah Khan , Peter Gonda , Haibo Xu , Chao Peng , Vishal Annapurve , Roger Wang , Vipin Sharma , jmattson@google.com, dmatlack@google.com, linux-kernel@vger.kernel.org, kvm@vger.kernel.org, linux-mm@kvack.org Content-Type: text/plain; charset="UTF-8" X-Rspamd-Queue-Id: 9D0E218001F X-Rspam-User: X-Rspamd-Server: rspam05 X-Stat-Signature: 6xcg8hzgfhcrefemqjaumxxnpdn6ra7q X-HE-Tag: 1702414066-944530 X-HE-Meta: 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 wAuAwRuN 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 X-Bogosity: Ham, tests=bogofilter, spamicity=0.006039, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: From: Ackerley Tng Signed-off-by: Ackerley Tng Signed-off-by: Ryan Afranji Signed-off-by: Sagi Shahar --- .../selftests/kvm/include/x86_64/tdx/tdx.h | 21 +++++++++++++++++++ .../selftests/kvm/lib/x86_64/tdx/tdx.c | 19 +++++++++++++++++ 2 files changed, 40 insertions(+) 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; +} -- 2.43.0.472.g3155946c3a-goog