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Peter Anvin" , Nathan Chancellor , Nick Desaulniers , Bill Wendling , Justin Stitt Subject: [PATCH -tip v2 3/3] x86/segment: Use ASM_INPUT_RM in __loadsegment_fs() Date: Wed, 11 Mar 2026 09:28:57 +0100 Message-ID: <20260311082915.205061-3-ubizjak@gmail.com> X-Mailer: git-send-email 2.53.0 In-Reply-To: <20260311082915.205061-1-ubizjak@gmail.com> References: <20260311082915.205061-1-ubizjak@gmail.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Use the ASM_INPUT_RM macro in __loadsegment_fs() to work around clang problems with "rm" asm constraint. clang seems to always chose the memory input, while it is almost always the worst choice. Signed-off-by: Uros Bizjak Acked-by: "Peter Zijlstra (Intel)" Cc: Thomas Gleixner Cc: Ingo Molnar Cc: Borislav Petkov Cc: Dave Hansen Cc: "H. Peter Anvin" Cc: Nathan Chancellor Cc: Nick Desaulniers Cc: Bill Wendling Cc: Justin Stitt --- arch/x86/include/asm/segment.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/x86/include/asm/segment.h b/arch/x86/include/asm/segment.h index 3fe3a310844c..0f4283dcd0c4 100644 --- a/arch/x86/include/asm/segment.h +++ b/arch/x86/include/asm/segment.h @@ -335,7 +335,7 @@ static inline void __loadsegment_fs(unsigned short value) _ASM_EXTABLE_TYPE(1b, 2b, EX_TYPE_CLEAR_FS) - : : "rm" (value) : "memory"); + : : ASM_INPUT_RM (value) : "memory"); } /* __loadsegment_gs is intentionally undefined. Use load_gs_index instead. */ -- 2.53.0