From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 24B5EC021A0 for ; Thu, 13 Feb 2025 21:18:44 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1tigal-0007TB-9E; Thu, 13 Feb 2025 16:17:51 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1tigai-0007SS-OC for qemu-devel@nongnu.org; Thu, 13 Feb 2025 16:17:48 -0500 Received: from mail-ed1-x532.google.com ([2a00:1450:4864:20::532]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1tigag-0005Du-Sw for qemu-devel@nongnu.org; Thu, 13 Feb 2025 16:17:48 -0500 Received: by mail-ed1-x532.google.com with SMTP id 4fb4d7f45d1cf-5deb1266031so2325341a12.2 for ; Thu, 13 Feb 2025 13:17:46 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; t=1739481465; x=1740086265; darn=nongnu.org; h=content-transfer-encoding:mime-version:message-id:date:user-agent :references:in-reply-to:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=9KKcX0+NeQcXbUUpZy7P33zfc/8z9DUqpU/IdzsHdBo=; b=Rsd3+cFLyQF7u/3nZ7tSW6IUylmEl5L9vBJhqymtG7wURiqgKzcgiovv4vViO0Wr+O jOI+2zUpLacYPVt3J+RCNuVt9joZ6mOC7XFsGzjSt73s3u5umz0nC0DULZktZxsvHURe tjL3UZHb6+GwmD8EoEPeg6P2ZU7u5dD2M6jvyub/F0wOleEJzISzkA6SV5d2F9CShnAJ EdeOgFpxlAyhiyiX6vh2lfuyed+QqP/xL4m0CV2Hy3wV72Hgt+jsF6YlPY4dV39QqTHq HKz8ai2F24/175MdK8q9ytPT5oNuI18kVq7hSwo9CGZarPjYesG9a7bG/lkjG7KO6GcN X55g== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1739481465; x=1740086265; h=content-transfer-encoding:mime-version:message-id:date:user-agent :references:in-reply-to:subject:cc:to:from:x-gm-message-state:from :to:cc:subject:date:message-id:reply-to; bh=9KKcX0+NeQcXbUUpZy7P33zfc/8z9DUqpU/IdzsHdBo=; b=ssJw9UODgo2cdoFW2RG7kiI9gei++fhP7CneNXZ3jD0UOKzxwCYvbCzyVOdp36gPsw o0/ZNfzOzSw6mtBwGTYAIZznZM+F98Wfp1zl/aayO2aaTOEf1ShyG9u1wHNhljEtZ1KO tpOCdFTlm6g/dnT/DIvndeMm0woUIHWIz37IxhWhCJONyPRVDmVMYTxWKVFGd8FyOATd czo+QaGf3Vf6MfuOZy5VHyngwWbGMznT3StIQg3n8cMMnugtdvVZmSQBa5TI+F1pAhJt FPMg3qgRJn5f61pMSIqJJFyJgjiFn3J4tQ/QcAMA0DEKHWbrHardHWF3sxY+vjeksFEO n0SA== X-Gm-Message-State: AOJu0YxPGZrx5nj+7KkGP3OJx1fzhaQu+Nn2vmIXSkHYcfVdaaBB+3uh zTP4OVXbT4G2E2uEWuUe4qAEQ3a+4tcn3in6YQzQWRzVK8VpQcyykc2pVMy2S50= X-Gm-Gg: ASbGnctFZK41+FThTgiI/M2d7218No+9DjnhgLk7lbRnCASO4UaZjpwynJDWVN2NBPF qiizy5+sgIbCbxx8R5Gm/K0BugSU0Knlb2GMDyiBnpRSUmeuLRd5NZa00hQQuCIomI3vv862oJy GwCOPAVqykh791McKkHXCYylvWb0wBJkIhFeS0LvZYyQZznPq1doe1yxCrCBn6xnQuhBNCT+rbz Z6fNAtm53HXL5DguxM4eslUU/5vQ8Pmm6XMR/Wkt+m6Kki5XOZmq+PVi0EZtnaMHJwXAUJ9B/Cg x48t0N1UtNWhinMEkw== X-Google-Smtp-Source: AGHT+IEZ0+1rCF3IonaItnM6YYmFyV1mf5trbua2iSo+6FVj1oVvTdpotLBFHID0ZFivpR7G9tkq/A== X-Received: by 2002:a17:906:dc94:b0:ab7:cf4d:9b2d with SMTP id a640c23a62f3a-ab7f33d5730mr652016866b.30.1739481464550; Thu, 13 Feb 2025 13:17:44 -0800 (PST) Received: from draig.lan ([185.126.160.109]) by smtp.gmail.com with ESMTPSA id a640c23a62f3a-aba532581cesm199366366b.45.2025.02.13.13.17.43 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 13 Feb 2025 13:17:44 -0800 (PST) Received: from draig (localhost [IPv6:::1]) by draig.lan (Postfix) with ESMTP id 3BA375F7DE; Thu, 13 Feb 2025 21:17:43 +0000 (GMT) From: =?utf-8?Q?Alex_Benn=C3=A9e?= To: Kashyap Chamarthy Cc: qemu-devel@nongnu.org, maz@kernel.org, Joel Stanley , Ninad Palsule , qemu-arm@nongnu.org, Andrew Jeffery , Peter Maydell , Alexandre Iooss , Jamin Lin , =?utf-8?Q?C=C3=A9dric?= Le Goater , "Edgar E. Iglesias" , Eric Auger , Yi Liu , Hao Wu , Tyrone Ting , sebott@redhat.com, Steven Lee , Zhenzhong Duan , Troy Lee , Alistair Francis Subject: Re: [PATCH v2 2/3] docs/cpu-features: Update "PAuth" (Pointer Authentication) details In-Reply-To: <20250213135032.2987289-3-kchamart@redhat.com> (Kashyap Chamarthy's message of "Thu, 13 Feb 2025 14:50:30 +0100") References: <20250213135032.2987289-1-kchamart@redhat.com> <20250213135032.2987289-3-kchamart@redhat.com> User-Agent: mu4e 1.12.8; emacs 29.4 Date: Thu, 13 Feb 2025 21:17:43 +0000 Message-ID: <87pljlpmrs.fsf@draig.linaro.org> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable Received-SPF: pass client-ip=2a00:1450:4864:20::532; envelope-from=alex.bennee@linaro.org; helo=mail-ed1-x532.google.com X-Spam_score_int: 12 X-Spam_score: 1.2 X-Spam_bar: + X-Spam_report: (1.2 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_SBL_CSS=3.335, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=no autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Kashyap Chamarthy writes: > PAuth (Pointer Authentication), a security feature in software, is > relevant for both KVM and QEMU. Relect this fact into the docs: > > - For KVM, `pauth` is a binary, "on" vs "off" option. The host CPU > will choose the cryptographic algorithm. > > - For TCG, however, along with `pauth`, a couple of properties can be > controlled -- they're are related to cryptographic algorithm choice. > > Thanks to Peter Maydell and Marc Zyngier for explaining more about PAuth > on IRC (#qemu, OFTC). > > Signed-off-by: Kashyap Chamarthy Reviewed-by: Alex Benn=C3=A9e --=20 Alex Benn=C3=A9e Virtualisation Tech Lead @ Linaro