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a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1702414065; x=1703018865; h=cc:to:from:subject:message-id:references:mime-version:in-reply-to :date:x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=+IXZ/Kz3W3ByK8YMBqzR++sHVAa+56dFMX9xl5Pgrpw=; b=e/H+h7m7jV0EezDHw4cnQkWhfH9X8gchKOzjCkR7AaU7carioZC6jYxdrnjV7NU/1Y 2pMSC3Kju6DAJfYkTlBfs8NxuA93pYxjUwdfHNZ3qy/T7Hgx+ciXZFELq22neenB/POJ weLQnercr1F9Q0OH9ehVYo9TA+4uDE88Bh8OghDCwUTcYE6baK+1A9oZ2cgSt8V+lXWI G9hBALmekMU8Yz9da+R6qZvdlG3fA11E78nTsP4txntZNvlFW/AlLi5dVNmDK39I7Dn2 2qze5Og6kh6XRLOmxB/EI/IQreeUovtkQ7i86+rX9uo6woDivI4kLzXyvJjmz/4L6nTW cWzA== X-Gm-Message-State: AOJu0YzCmJcHAlgejEG21L4Xk1AAS6RKchyhl/h707kUWHGHtZ0oqJIa jg4xQVUOtyt6Mu7id2ZfRpzdYujD6w== X-Received: from sagi.c.googlers.com ([fda3:e722:ac3:cc00:7f:e700:c0a8:241b]) (user=sagis job=sendgmr) by 2002:a17:903:22cd:b0:1d0:727b:8355 with SMTP id y13-20020a17090322cd00b001d0727b8355mr51732plg.1.1702414065371; 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 X-Spam-Status: No, score=-8.4 required=5.0 tests=DKIMWL_WL_MED,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,T_SCC_BODY_TEXT_LINE, USER_IN_DEF_DKIM_WL autolearn=unavailable autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on pete.vger.email Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org X-Greylist: Sender passed SPF test, not delayed by milter-greylist-4.6.4 (pete.vger.email [0.0.0.0]); Tue, 12 Dec 2023 12:51:49 -0800 (PST) X-getmail-retrieved-from-mailbox: INBOX X-GMAIL-THRID: 1785110791042792999 X-GMAIL-MSGID: 1785110791042792999 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; +}