[v5,02/30] x86/mm: add ARCH_PKEY_BITS to Kconfig

Message ID	20240822151113.1479789-3-joey.gouly@arm.com (mailing list archive)
State	New
Headers	show Return-Path: <owner-linux-mm@kvack.org> From: Joey Gouly <joey.gouly@arm.com> To: linux-arm-kernel@lists.infradead.org Cc: nd@arm.com, akpm@linux-foundation.org, aneesh.kumar@kernel.org, aneesh.kumar@linux.ibm.com, anshuman.khandual@arm.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, skhan@linuxfoundation.org, szabolcs.nagy@arm.com, tglx@linutronix.de, will@kernel.org, x86@kernel.org, kvmarm@lists.linux.dev, linux-kselftest@vger.kernel.org Subject: [PATCH v5 02/30] x86/mm: add ARCH_PKEY_BITS to Kconfig Date: Thu, 22 Aug 2024 16:10:45 +0100 Message-Id: <20240822151113.1479789-3-joey.gouly@arm.com> In-Reply-To: <20240822151113.1479789-1-joey.gouly@arm.com> References: <20240822151113.1479789-1-joey.gouly@arm.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Sender: owner-linux-mm@kvack.org Precedence: bulk
Series	Permission Overlay Extension \| expand [v5,00/30] Permission Overlay Extension [v5,01/30] powerpc/mm: add ARCH_PKEY_BITS to Kconfig [v5,02/30] x86/mm: add ARCH_PKEY_BITS to Kconfig [v5,03/30] mm: use ARCH_PKEY_BITS to define VM_PKEY_BITN [v5,04/30] arm64: disable trapping of POR_EL0 to EL2 [v5,05/30] arm64: cpufeature: add Permission Overlay Extension cpucap [v5,06/30] arm64: context switch POR_EL0 register [v5,07/30] KVM: arm64: Save/restore POE registers [v5,08/30] KVM: arm64: make kvm_at() take an OP_AT_* [v5,09/30] KVM: arm64: use `at s1e1a` for POE [v5,10/30] KVM: arm64: Sanitise ID_AA64MMFR3_EL1 [v5,11/30] arm64: enable the Permission Overlay Extension for EL0 [v5,12/30] arm64: re-order MTE VM_ flags [v5,13/30] arm64: add POIndex defines [v5,14/30] arm64: convert protection key into vm_flags and pgprot values [v5,15/30] arm64: mask out POIndex when modifying a PTE [v5,16/30] arm64: handle PKEY/POE faults [v5,17/30] arm64: add pte_access_permitted_no_overlay() [v5,18/30] arm64: implement PKEYS support [v5,19/30] arm64: add POE signal support [v5,20/30] arm64/ptrace: add support for FEAT_POE [v5,21/30] arm64: enable POE and PIE to coexist [v5,22/30] arm64: enable PKEY support for CPUs with S1POE [v5,23/30] arm64: add Permission Overlay Extension Kconfig [v5,24/30] kselftest/arm64: move get_header() [v5,25/30] selftests: mm: move fpregs printing [v5,26/30] selftests: mm: make protection_keys test work on arm64 [v5,27/30] kselftest/arm64: add HWCAP test for FEAT_S1POE [v5,28/30] kselftest/arm64: parse POE_MAGIC in a signal frame [v5,29/30] kselftest/arm64: Add test case for POR_EL0 signal frame records [v5,30/30] KVM: selftests: get-reg-list: add Permission Overlay registers

Message ID

20240822151113.1479789-3-joey.gouly@arm.com (mailing list archive)

State

New

Headers

From: Joey Gouly <joey.gouly@arm.com>
To: linux-arm-kernel@lists.infradead.org
Cc: nd@arm.com,
	akpm@linux-foundation.org,
	aneesh.kumar@kernel.org,
	aneesh.kumar@linux.ibm.com,
	anshuman.khandual@arm.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,
	skhan@linuxfoundation.org,
	szabolcs.nagy@arm.com,
	tglx@linutronix.de,
	will@kernel.org,
	x86@kernel.org,
	kvmarm@lists.linux.dev,
	linux-kselftest@vger.kernel.org
Subject: [PATCH v5 02/30] x86/mm: add ARCH_PKEY_BITS to Kconfig
Date: Thu, 22 Aug 2024 16:10:45 +0100
Message-Id: <20240822151113.1479789-3-joey.gouly@arm.com>
In-Reply-To: <20240822151113.1479789-1-joey.gouly@arm.com>
References: <20240822151113.1479789-1-joey.gouly@arm.com>
MIME-Version: 1.0
Content-Transfer-Encoding: 8bit
Sender: owner-linux-mm@kvack.org
Precedence: bulk

Series

Permission Overlay Extension | expand

Commit Message

Joey Gouly Aug. 22, 2024, 3:10 p.m. UTC

The new config option specifies how many bits are in each PKEY.

Signed-off-by: Joey Gouly <joey.gouly@arm.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: x86@kernel.org
Acked-by: Dave Hansen <dave.hansen@linux.intel.com>
---
 arch/x86/Kconfig | 4 ++++
 1 file changed, 4 insertions(+)

diff --git arch/x86/Kconfig arch/x86/Kconfig
index 007bab9f2a0e..683c0a64efe2 100644
--- arch/x86/Kconfig
+++ arch/x86/Kconfig
@@ -1889,6 +1889,10 @@  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

[v5,02/30] x86/mm: add ARCH_PKEY_BITS to Kconfig

Commit Message

Patch