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Wed, 19 Nov 2025 16:47:22 -0800 (PST) From: Daniel Tang To: Borislav Petkov Cc: linux-doc@vger.kernel.org, x86@kernel.org, linux-kernel@vger.kernel.org, Ira Weiny , Dave Hansen , Babu Moger Subject: [PATCH v2] Documentation/protection-keys: Mark as available on AMD Date: Wed, 19 Nov 2025 19:47:20 -0500 Message-ID: <2728119.mhk5qWAgFL@daniel-desktop3> In-Reply-To: <20251119215038.GHaR47rlpLKZlu-m0y@fat_crate.local> References: <3647894.L58v44csPz@daniel-desktop3> <20251119215038.GHaR47rlpLKZlu-m0y@fat_crate.local> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable 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/cor= e-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_S= 1POE) =20 x86_64 --=20 2.51.0