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Mon, 29 Jan 2024 10:06:02 -0800 (PST) Date: Mon, 29 Jan 2024 19:05:17 +0100 In-Reply-To: <20240129180502.4069817-21-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: <20240129180502.4069817-21-ardb+git@google.com> X-Developer-Key: i=ardb@kernel.org; a=openpgp; fpr=F43D03328115A198C90016883D200E9CA6329909 X-Developer-Signature: v=1; a=openpgp-sha256; l=1516; i=ardb@kernel.org; h=from:subject; bh=XIt7BesiIe5Ouf8eLT5Jk6gT3ML8ZNdNuPHWU+248+Y=; b=owGbwMvMwCFmkMcZplerG8N4Wi2JIXX7i3sXJ3YtNZs6V0Vn46sNwfPVvywvyvumoxTpaWPlJ Nz4QT6mo5SFQYyDQVZMkUVg9t93O09PlKp1niULM4eVCWQIAxenAExk7QxGhtn/Pbk3KEkWcd6X n8erVbj74eH4N1o8/57WlE5hkr1zU4XhN8vqb2tihGJOxm3c8mZjeq3tTemlor/sxaf2e0qmZ2w +wAoA X-Mailer: git-send-email 2.43.0.429.g432eaa2c6b-goog Message-ID: <20240129180502.4069817-35-ardb+git@google.com> Subject: [PATCH v3 14/19] x86/coco: Make cc_set_mask() static inline From: Ard Biesheuvel To: linux-kernel@vger.kernel.org Cc: Ard Biesheuvel , Kevin Loughlin , Tom Lendacky , Dionna Glaze , Thomas Gleixner , Ingo Molnar , Borislav Petkov , Dave Hansen , Andy Lutomirski , Arnd Bergmann , Nathan Chancellor , Nick Desaulniers , Justin Stitt , Kees Cook , Brian Gerst , linux-arch@vger.kernel.org, llvm@lists.linux.dev Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" From: Ard Biesheuvel Setting the cc_mask global variable may be done early in the boot while running fromm a 1:1 translation. This code is built with -fPIC in order to support this. Make cc_set_mask() static inline so it can execute safely in this context as well. Signed-off-by: Ard Biesheuvel --- arch/x86/coco/core.c | 7 +------ arch/x86/include/asm/coco.h | 8 +++++++- 2 files changed, 8 insertions(+), 7 deletions(-) diff --git a/arch/x86/coco/core.c b/arch/x86/coco/core.c index eeec9986570e..d07be9d05cd0 100644 --- a/arch/x86/coco/core.c +++ b/arch/x86/coco/core.c @@ -14,7 +14,7 @@ #include =20 enum cc_vendor cc_vendor __ro_after_init =3D CC_VENDOR_NONE; -static u64 cc_mask __ro_after_init; +u64 cc_mask __ro_after_init; =20 static bool noinstr intel_cc_platform_has(enum cc_attr attr) { @@ -148,8 +148,3 @@ u64 cc_mkdec(u64 val) } } EXPORT_SYMBOL_GPL(cc_mkdec); - -__init void cc_set_mask(u64 mask) -{ - cc_mask =3D mask; -} diff --git a/arch/x86/include/asm/coco.h b/arch/x86/include/asm/coco.h index 6ae2d16a7613..ecc29d6136ad 100644 --- a/arch/x86/include/asm/coco.h +++ b/arch/x86/include/asm/coco.h @@ -13,7 +13,13 @@ enum cc_vendor { extern enum cc_vendor cc_vendor; =20 #ifdef CONFIG_ARCH_HAS_CC_PLATFORM -void cc_set_mask(u64 mask); +static inline void cc_set_mask(u64 mask) +{ + extern u64 cc_mask; + + cc_mask =3D mask; +} + u64 cc_mkenc(u64 val); u64 cc_mkdec(u64 val); #else --=20 2.43.0.429.g432eaa2c6b-goog