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Wed, 14 May 2025 03:43:14 -0700 (PDT) Date: Wed, 14 May 2025 12:42:50 +0200 In-Reply-To: <20250514104242.1275040-9-ardb+git@google.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 References: <20250514104242.1275040-9-ardb+git@google.com> X-Developer-Key: i=ardb@kernel.org; a=openpgp; fpr=F43D03328115A198C90016883D200E9CA6329909 X-Developer-Signature: v=1; a=openpgp-sha256; l=1080; i=ardb@kernel.org; h=from:subject; bh=x4z2VkW3ceTma4YBru6lhP3tx3BetAlSCCBd3CfJhOE=; b=owGbwMvMwCFmkMcZplerG8N4Wi2JIUOlePWzkK1+1yQeBzuddHitFuz+12q64uLX/hGPGZc76 uaWr23sKGVhEONgkBVTZBGY/ffdztMTpWqdZ8nCzGFlAhnCwMUpABPhO8PIsDjqSbYGv9muzhPv 5K6pRW1dHPExf/M5t88JOdOUorQ8jBgZjm+ViQsr3uj70KC61UXcRCi5tdX626WHAkpSzPULbL3 ZAA== X-Mailer: git-send-email 2.49.0.1101.gccaa498523-goog Message-ID: <20250514104242.1275040-16-ardb+git@google.com> Subject: [PATCH v3 7/7] x86/cpu: Make CPU capability overrides __ro_after_init From: Ard Biesheuvel To: linux-kernel@vger.kernel.org Cc: x86@kernel.org, Ard Biesheuvel , Ingo Molnar , Linus Torvalds , Brian Gerst Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" From: Ard Biesheuvel CPU capabilities are set at init time so they can be made R/O once the boot completes. Signed-off-by: Ard Biesheuvel --- arch/x86/kernel/cpu/common.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/arch/x86/kernel/cpu/common.c b/arch/x86/kernel/cpu/common.c index 08a586606e24..19b310bd55ae 100644 --- a/arch/x86/kernel/cpu/common.c +++ b/arch/x86/kernel/cpu/common.c @@ -702,8 +702,8 @@ static const char *table_lookup_model(struct cpuinfo_x8= 6 *c) } =20 /* Aligned to unsigned long to avoid split lock in atomic bitmap ops */ -__u32 __read_mostly cpu_caps_cleared[NCAPINTS + NBUGINTS] __aligned(sizeof= (unsigned long)); -__u32 __read_mostly cpu_caps_set[NCAPINTS + NBUGINTS] __aligned(sizeof(uns= igned long)); +__u32 __ro_after_init cpu_caps_cleared[NCAPINTS + NBUGINTS] __aligned(size= of(unsigned long)); +__u32 __ro_after_init cpu_caps_set[NCAPINTS + NBUGINTS] __aligned(sizeof(u= nsigned long)); =20 #ifdef CONFIG_X86_32 /* The 32-bit entry code needs to find cpu_entry_area. */ --=20 2.49.0.1101.gccaa498523-goog