From nobody Sat Feb 7 18:16:10 2026 Received: from mail-qk1-f193.google.com (mail-qk1-f193.google.com [209.85.222.193]) (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 3E0291E9906 for ; Thu, 15 Jan 2026 02:06:23 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.222.193 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1768442784; cv=none; b=pCMZ2MLTQWciEN5ZF0ay34VQrUON/EcGqTVqWZvTv9tHyy0+jviNpk5nquv2rqCe1RqQu4F0tp23eFPPYIfbKsLjOkbPCiBnF7/GFDkUHx4dYUKjP8gw9RuCCFvSYSrriIDaLRNsFKAnBUG/cVChH6iMipx9+xwS2Mh7cDALRoA= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1768442784; c=relaxed/simple; bh=ivn8qt3qtOtcFgu+q0kk1YYIE13gmngy4cnYQWDGEK4=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=GFH3dLG3wS4TaD7uS1y86Z04guw54gL7NAQoCS4Qx3nexvmgog3rXp+w5Xn9l7iGXQ9jwq8GiPnCMr3wI3CefePjUf15EMcRzSgpLnL467BTzEYYj7WwpOXiKixkSXzNB6E468etzgcmLyX4tGcYfR2JOJyth8l1g5qfrveh008= 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=YN3Lyrcf; arc=none smtp.client-ip=209.85.222.193 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="YN3Lyrcf" Received: by mail-qk1-f193.google.com with SMTP id af79cd13be357-8c52e25e644so40767585a.0 for ; Wed, 14 Jan 2026 18:06:23 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1768442782; x=1769047582; darn=vger.kernel.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=puth6Wv7pkNXWqWqMPPrzQflQ0wnF2gVjRI6DfFw6z8=; b=YN3LyrcfwyQgOmhQzYi3V9mYjGizjWVdxdzi1ckXFcnVxoRgM+mYTnAK22I56upxze u1E8eBNyVdV/UK3PK3lTnaS6Jd1llheKx2lQcsNtAU22VJTHrWZKYdV0+fSs8T8937jH mNqpYxiyUSYqhFX8VYdHNh8YsRRMUCbmD6aLCq4TJNwiB38qnppuWa00/4X/GaQ1dmk5 0OYdITyPZiYAP1KWVNrcu64qzMB3bFnjan2PbjlEBbb8f4W6W0cOn8tPH+fkVXXBJTEv //E18Ra/D5IzX6t/F/p0VIUDuKZ32U3o/6W3DbTjeiPo+OIljirq3idbBcEnN3ZZZsX8 CrRg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1768442782; x=1769047582; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-gg:x-gm-message-state:from :to:cc:subject:date:message-id:reply-to; bh=puth6Wv7pkNXWqWqMPPrzQflQ0wnF2gVjRI6DfFw6z8=; b=LaB8njJgUBEyRYvGK5ERCr8UGIN8neBTEEYwgllpwyuPaTJVh0Sk9MohV+SjD0DcCx QxFWiwuvAKZYw5vJn/glmFNred+fWWLG0t+VvB82wTRKQL3KYew05EPiD0EPwZz4E2mX 0H/37ZXodKk8xrcxjhPtlIiW6fMGEFOOk7UbtEvB0/VRD9OY1fOHr8vMn0F769wbXQPD Ithl/Nr+MVWug43K6JMpQ+S2i77VRT7Fc4jiJledJYRo3emxPnuCWRb6MC3s/eea+E6h WCpriaPv5aMW7/WkqQULhLwHkruvC8ZbHLcbQTkB5j3K7nrrjFW9O4bdxLA+VsKWNKDX zE4g== X-Forwarded-Encrypted: i=1; AJvYcCVrj1/CDmD7sLwR69LVYuCPTbfKMc6JCKiDOfpjF+k2C2CMmaQfjUASW/dbmV2GAZ/A3DWBy6aDTAIVYlU=@vger.kernel.org X-Gm-Message-State: AOJu0YwCT5TZdvhgWIMPL5s1rM8ndSkRN9/d4ZTSR3TTOjMLiNw+Uv4i 3rI21jX43+G4YMi6sBeeBLv1ugHKZzDTSff7ICQga/bwsMBGw46WAe0I X-Gm-Gg: AY/fxX6hyEbM+Eq2L9uzAAhFhq+0jdJrxsKdxRHiEcX/v7Zd2A0kR4XuqlsNV2LcShr J4PgHE5xgA5iZi92qMaq71ID4iPIdgu/QjS16mwggTLAZMGNr7bmQxZtyW5vC0OtZEXD49rNmG9 yuoTOPQgxukB2fOfKHE3j6fz1tjbPweSEOAXrApw3U5kMiLL3DnyrBxSRmOAvMTGUGTOHjM7cLk 6k1HI8bJdsUqxOd5uf8p9u0EfPcynyJhyMZbSz+DmtOfF+7dFIzQJ0pvtqIfYbeULOfVtLW45XR BWfLdcxA5zMuG7BwDtAY9e29RYbnFYryOCZP6B469NOwoSbCulBrh+dkvmuXsPB6Tn7upZo5iFH 6aJUibGku+S+GKhIN41Bpvq3b+951Q32ZX8pPQn/pkhR7Fxz2e9QSpewkbRTnDgu1l2J3n2YxcO A3wIaEOv/2PARRl0Q8kRv+ZNlaXbn8COLHrDu34F27DSdbdvf1TjJn X-Received: by 2002:a05:620a:4092:b0:8b2:7536:bd49 with SMTP id af79cd13be357-8c52fb05591mr737490785a.12.1768442782037; 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-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 Acked-by: Bagas Sanjaya --- 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