From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-pg1-f174.google.com (mail-pg1-f174.google.com [209.85.215.174]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 4C8562F8EAD for ; Thu, 9 Jul 2026 16:47:59 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.215.174 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1783615680; cv=none; b=INFT5y0eoHrBPgBHynH7/+UojwUJQnaAAumJcz+V+qM6eNgcObfVFfOyEQFx0ICeyoeRJxCPS5O5amw+8Wd6r0aWRpMUX9MzlbJh7CU6dV5oYoPR6qXjgs0r+nPIoTmZJROOsWl+XMoHzmRHgOR+aS3lI8rsFy7j/0+LSdmayQk= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1783615680; c=relaxed/simple; bh=l8azDO1V+A9zH7SZVFYyRnG3Q6u3OzWf/+Ivbv+sPKQ=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version; b=fZjkrRaptES43AmB7RHBMHz/T7DbPTiiy0Vey82PdvEer9luB9Z0Zo+WvvS2qkN7cUsM9IAcTym0oyg4ZWwTgc1e7RlUzoKFMlbdvj7qDqXpvsTkl1gzpmz4+I76soyXBShfTJtRgGTqfMMJFdC8WDS/wHwXXUx35vY2UA0+P+Y= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com; spf=pass smtp.mailfrom=gmail.com; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b=Hkc4PfeD; arc=none smtp.client-ip=209.85.215.174 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=gmail.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="Hkc4PfeD" Received: by mail-pg1-f174.google.com with SMTP id 41be03b00d2f7-c9d1fc053e0so34546a12.1 for ; Thu, 09 Jul 2026 09:47:59 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20251104; t=1783615679; x=1784220479; darn=vger.kernel.org; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:from:to:cc:subject:date:message-id:reply-to:content-type; bh=Bugrw9ZAn9zVjHgJbS8tolPWSEIE1MhjgoMVhvy2STM=; b=Hkc4PfeD4Rw6Ahgud1zBQSFM5LzRawNvlv+JLDShmbc+gWBRjaUz+vIX7h+zWRqIns A1+nIFvAGbIIF5Hjpp+mwtmV01gzQPJ3DytJ/FM8vxsvxhwLijCRslH/3pQbD1bsi7lq q4rRnar8JHAD4XebwoYldv1+lfsKV3pfVnhYVbCfZf4lIvIltGY22vhBCBdnTfv5Wdk1 qBS1bgSIJGiEDvwqDRIVszNQHP8PMZ/svpX9tNXhztQJ8946xP0WmhjkGlRnMkh/1tbl xkVH3kuu3tmsaqYPbTmZPGLsMDY+m3AvP0Q6AGBr8VwI2M8wN0p2rpL2Y+CfgI6jk9hx 3hmw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20251104; t=1783615679; x=1784220479; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:x-gm-gg:x-gm-message-state:from:to:cc:subject:date :message-id:reply-to:content-type; bh=Bugrw9ZAn9zVjHgJbS8tolPWSEIE1MhjgoMVhvy2STM=; b=Ivfvq/DDdZSQK/nJyNXyvSl7zWoAD8GS7rirSIZs3TTfo6nwQPyrzmeS47hk61emOW mG+05Rc2I6fCJ2URNyf04PTv6Xbg/ZVvXPS1lTgIchQUG1KZcE1ykWcIMaQaZEtC0IeC YU1jhNXEaC9awwLkyxLXUfFIo9COv+q7Qj6wOXqqNKIjgFTuC3uMW9XYpAAJSSy/UNgf XrEGdzKF7in9Q7LUHxscn3MvF87mufqF3rQWAKOxkXAYSAPsEu/LxlG/G8mnydVeuIiR rjKUMb3wAKz4LflA/BUvR1zuHa9JR/xHNbI5RTbcUboBymx3tEiLfONsauy8aodW01dV c/AA== X-Forwarded-Encrypted: i=1; AHgh+Rq80jNvgtdym9H9nJPu68stYBECGSZ3g7/dofPFdP4/lYtVGNnnIyjcVDGCc/nH9GAtv80ShorjQ4E+3SxL+BA=@vger.kernel.org X-Gm-Message-State: AOJu0Yyq9mkbSpw0xUAnwPHHSypEg7Jasg8m74Xr2BCMTtkiAzwpQW7+ G5ivYDnbMof+DhlsMy+pGn9Zz1eU3NA7ayLU6dDzVsHpY2ItRg8CNrty X-Gm-Gg: AfdE7cmAj64WRb+wPgukGtYfu4byY9hPevV3tDC14W2+2aoom3a3dC9A0KLKMw95k56 NlRALvqO5MtbdCCKCYjUNme7RNiiY+bzFd+aATM6D0XRr0wZtaBZH4osiPyngfbLwYlMAXGaWKa CGxzKOmdcUj3LrHlSPqmXUjtJAiHvYAf0RmaRYBqfQKWGvUom9kSyULvTHOqwdGfinJ2KUCdP8b sZ8SHHXGUwjAaGfHHK5SwgKPt652+ZanVXHLHphn3hKVCP8oXHFqSDJys3/tv9BNThUqlbTRnZs vwxb6ye4G8s4jlRPWMTy48SYfOBuZPawzfdy7aJQ8UprS5NrHnHtrN6XsZHaONRU/ZdEFgWgf1i 01llMFDT2uz0S2dAlppEH4HcYHjouq3qp/ZSNfVFNPuH1TCssxjbTyXaWT59DKP/bMILUI2tWgJ ec9jc0NRmnzkmYkg54eI15IGpS1IHn6f3J+0E= X-Received: by 2002:a05:6a20:3d0b:b0:3bf:6c08:2842 with SMTP id adf61e73a8af0-3c0bd1a82abmr10253601637.49.1783615678611; Thu, 09 Jul 2026 09:47:58 -0700 (PDT) Received: from volcano9f8e-host.amd.com ([165.204.217.251]) by smtp.gmail.com with ESMTPSA id a92af1059eb24-13b6593c4ddsm35709287c88.1.2026.07.09.09.47.56 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 09 Jul 2026 09:47:58 -0700 (PDT) From: Hemanth Selam To: seanjc@google.com, pbonzini@redhat.com, shuah@kernel.org Cc: kvm@vger.kernel.org, linux-kselftest@vger.kernel.org, linux-kernel@vger.kernel.org, Hemanth Selam Subject: [PATCH v1 0/2] KVM: selftests: SEV: address two TODOs in the SEV tests Date: Thu, 9 Jul 2026 22:17:49 +0530 Message-ID: <20260709164751.621326-1-hemanth.selam@gmail.com> X-Mailer: git-send-email 2.43.7 Precedence: bulk X-Mailing-List: linux-kselftest@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit This small series fills in two pre-existing TODOs in the x86 SEV selftests. Both are test-only changes; there is no functional change to the kernel. Patch 1 adds negative coverage to sev_init2_tests: when the platform does not support a given SEV VM type (SEV-ES or SEV-SNP), it verifies that KVM_CREATE_VM rejects that type with -EINVAL. Previously the test only exercised the VM types that were supported, so a mismatch between KVM_CAP_VM_TYPES and the actual KVM_CREATE_VM enforcement would have gone unnoticed. Patch 2 makes sev_smoke_test capture the launch measurement returned by KVM_SEV_LAUNCH_MEASURE for SEV and SEV-ES guests and asserts that it is not all zeros, instead of discarding it. A full attestation-style validation is not possible from the selftest (userspace does not hold the transport keys used to derive the measurement), but a non-zero check catches a PSP/plumbing failure that silently leaves the buffer untouched. SEV-SNP uses a different launch flow and is skipped. Testing: built and run on an AMD EPYC 9755 (Turin) host running this tree, across two boot configurations: - SEV + SEV-ES enabled, SEV-SNP disabled - SEV + SEV-SNP enabled (SEV-ES unusable) Together these exercised both new rejection branches (SEV-ES and SEV-SNP) and the launch-measurement check for SEV/SEV-ES, plus SEV-SNP guest creation and launch. Both tests pass in every configuration, and checkpatch is clean on both patches. Hemanth Selam (2): KVM: selftests: SEV: Verify unsupported VM types are rejected at creation KVM: selftests: SEV: Sanity check the launch measurement .../selftests/kvm/x86/sev_init2_tests.c | 23 +++++++++++++-- .../selftests/kvm/x86/sev_smoke_test.c | 29 +++++++++++++++++-- 2 files changed, 47 insertions(+), 5 deletions(-) base-commit: 0e35b9b6ec0ffcc5e23cbdec09f5c622ad532b53 -- 2.43.7