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Wed, 14 Jan 2026 18:06:22 -0800 (PST) Received: from daniel-desktop3.localnet ([204.48.94.102]) by smtp.gmail.com with ESMTPSA id af79cd13be357-8c530894ecasm313151085a.0.2026.01.14.18.06.20 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 14 Jan 2026 18:06:21 -0800 (PST) From: Daniel Tang To: linux-doc@vger.kernel.org Cc: x86@kernel.org, linux-kernel@vger.kernel.org, Ira Weiny , Dave Hansen , Babu Moger , Borislav Petkov Subject: [PATCH v2 RESEND] Documentation/protection-keys: Mark as available on AMD Date: Wed, 14 Jan 2026 21:06:20 -0500 Message-ID: <45127739.pHGDlbCDJk@daniel-desktop3> In-Reply-To: <2728119.mhk5qWAgFL@daniel-desktop3> References: <3647894.L58v44csPz@daniel-desktop3> <20251119215038.GHaR47rlpLKZlu-m0y@fat_crate.local> <2728119.mhk5qWAgFL@daniel-desktop3> Precedence: bulk X-Mailing-List: linux-doc@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 7Bit Content-Type: text/plain; charset="utf-8" This is shown on page 78 of AMD document 55898 "Preliminary Processor Programming Reference (PPR) for AMD Family 19h Model 01h, Revision B1 Processors Volume 1 of 2" for Zen 3. I tested this on my 5900X via the program in pkeys(7) and `grep ospke /proc/cpuinfo`. Signed-off-by: Daniel Tang --- Documentation/core-api/protection-keys.rst | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/Documentation/core-api/protection-keys.rst b/Documentation/core-api/protection-keys.rst index 7eb7c6023e09..59e7c178af4b 100644 --- a/Documentation/core-api/protection-keys.rst +++ b/Documentation/core-api/protection-keys.rst @@ -11,7 +11,7 @@ application changes protection domains. Pkeys Userspace (PKU) is a feature which can be found on: * Intel server CPUs, Skylake and later * Intel client CPUs, Tiger Lake (11th Gen Core) and later - * Future AMD CPUs + * AMD Zen 3 and later * arm64 CPUs implementing the Permission Overlay Extension (FEAT_S1POE) x86_64 -- 2.51.0