From patchwork Fri May 3 13:01:20 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Joey Gouly X-Patchwork-Id: 13652751 Received: from foss.arm.com (foss.arm.com [217.140.110.172]) by smtp.subspace.kernel.org (Postfix) with ESMTP id BB45E153589 for ; Fri, 3 May 2024 13:02:02 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=217.140.110.172 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1714741324; cv=none; b=uJmduX4RiDHrClJ8Lk6leVDQvpmGjkHyxAmZGvhi7B2O/wIw/DjsyXiuG/JwOGq7Es4vJJscbE6HOl6bpKbzBv1A8H30vpLMBbIvK9agVitUVWBxBDKs51rp8zZdgqa94uRk0JlqzDo5nxdBkm/nMXxXSyoiQIGQB/UGYbfYFLk= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1714741324; c=relaxed/simple; bh=xr35U8rEAWmjFIndvendUxZD4UNbvIe18Ny++DDK8+Q=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=KzBl9gyhzltnBWWDU3BBuyArbhUIawnUzTa4rN+34j2S/arKvcZqrYvbUDBjvlTblTcNEbjqgOR8VWWwqDSDdFTGojYnsW/CyJEv1jHS81HefBOzcPNsCjfqNCxm+tW+rxYo0gJNdIvQkv1ohfKWPlGRc/8f8gxZgFyV4zEI5Uc= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=arm.com; spf=pass smtp.mailfrom=arm.com; arc=none smtp.client-ip=217.140.110.172 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=arm.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=arm.com Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id 777061596; Fri, 3 May 2024 06:02:27 -0700 (PDT) Received: from e124191.cambridge.arm.com (e124191.cambridge.arm.com [10.1.197.45]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id 1A7ED3F73F; Fri, 3 May 2024 06:01:58 -0700 (PDT) From: Joey Gouly To: linux-arm-kernel@lists.infradead.org Cc: akpm@linux-foundation.org, aneesh.kumar@kernel.org, aneesh.kumar@linux.ibm.com, bp@alien8.de, broonie@kernel.org, catalin.marinas@arm.com, christophe.leroy@csgroup.eu, dave.hansen@linux.intel.com, hpa@zytor.com, joey.gouly@arm.com, linux-fsdevel@vger.kernel.org, linux-mm@kvack.org, linuxppc-dev@lists.ozlabs.org, maz@kernel.org, mingo@redhat.com, mpe@ellerman.id.au, naveen.n.rao@linux.ibm.com, npiggin@gmail.com, oliver.upton@linux.dev, shuah@kernel.org, szabolcs.nagy@arm.com, tglx@linutronix.de, will@kernel.org, x86@kernel.org, kvmarm@lists.linux.dev Subject: [PATCH v4 02/29] x86/mm: add ARCH_PKEY_BITS to Kconfig Date: Fri, 3 May 2024 14:01:20 +0100 Message-Id: <20240503130147.1154804-3-joey.gouly@arm.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20240503130147.1154804-1-joey.gouly@arm.com> References: <20240503130147.1154804-1-joey.gouly@arm.com> Precedence: bulk X-Mailing-List: linux-fsdevel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 The new config option specifies how many bits are in each PKEY. Signed-off-by: Joey Gouly Cc: Thomas Gleixner Cc: Ingo Molnar Cc: Borislav Petkov Cc: Dave Hansen Cc: H. Peter Anvin Cc: x86@kernel.org Acked-by: Dave Hansen --- arch/x86/Kconfig | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig index 928820e61cb5..109e767d36e7 100644 --- a/arch/x86/Kconfig +++ b/arch/x86/Kconfig @@ -1879,6 +1879,10 @@ config X86_INTEL_MEMORY_PROTECTION_KEYS If unsure, say y. +config ARCH_PKEY_BITS + int + default 4 + choice prompt "TSX enable mode" depends on CPU_SUP_INTEL