From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 28D2512FB31; Wed, 19 Jun 2024 13:06:52 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1718802412; cv=none; b=uBt1Ykj6Z4/PScCB+aia52HoI6BMHd7TlUKnwcxOH3tKjiyZKLZBhs0uipjy//eaSUaOf8yBKy4jiZ7+0Z1B30ccDyQDOsw0MRhmW8hNEnVX3U9plQCvPG3xpV7JM6CQMXHTePMgFmFKRwDmduHxrlGb7YQt8q+RyQ+1Zmc9eOc= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1718802412; c=relaxed/simple; bh=tsxqd5hM8nH19OSkO/4ZfQHO6vH3MoBOmCPncYNRmyY=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=C9DKfyeaJg9fhH29A6AgtUBTK/lGidXfFOgLGG6kb2Zy++7flca7cwrZTCT2ikNSM+iH6frBU0oN0le9A5j2G0LHcJQCjf3Z2FRQLjcp418QO62lZHR5L8DtZl9tYiMWAmdql/eBUGv/bpF7JNCe8XWirTNvuhlU2fnAf3AJ7X8= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=gNJsocEq; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="gNJsocEq" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 9B970C2BBFC; Wed, 19 Jun 2024 13:06:51 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1718802412; bh=tsxqd5hM8nH19OSkO/4ZfQHO6vH3MoBOmCPncYNRmyY=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=gNJsocEqh0Dtas+TxzMNFim67wwtMqEouZvGeZoHKF6Texv6P6pKqKkmPKin+9h3C vHLY0iVbto680vCDm6rnZl7AYC6bV8V/QU/Ps72poy6b13clhGl9KO+cV1aK1BJVsM DnGIoeQr5GOL0JcIgB6lWAGLEZvy7skhGIPR+njA= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Uros Bizjak , Ingo Molnar , Linus Torvalds , Josh Poimboeuf , Ard Biesheuvel , "H. Peter Anvin" , Sasha Levin Subject: [PATCH 6.6 157/267] x86/asm: Use %c/%n instead of %P operand modifier in asm templates Date: Wed, 19 Jun 2024 14:55:08 +0200 Message-ID: <20240619125612.369676842@linuxfoundation.org> X-Mailer: git-send-email 2.45.2 In-Reply-To: <20240619125606.345939659@linuxfoundation.org> References: <20240619125606.345939659@linuxfoundation.org> User-Agent: quilt/0.67 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: stable@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 6.6-stable review patch. If anyone has any objections, please let me know. ------------------ From: Uros Bizjak [ Upstream commit 41cd2e1ee96e56401a18dbce6f42f0bdaebcbf3b ] The "P" asm operand modifier is a x86 target-specific modifier. When used with a constant, the "P" modifier emits "cst" instead of "$cst". This property is currently used to emit the bare constant without all syntax-specific prefixes. The generic "c" resp. "n" operand modifier should be used instead. No functional changes intended. Signed-off-by: Uros Bizjak Signed-off-by: Ingo Molnar Cc: Linus Torvalds Cc: Josh Poimboeuf Cc: Ard Biesheuvel Cc: "H. Peter Anvin" Link: https://lore.kernel.org/r/20240319104418.284519-3-ubizjak@gmail.com Stable-dep-of: 8c860ed825cb ("x86/uaccess: Fix missed zeroing of ia32 u64 get_user() range checking") Signed-off-by: Sasha Levin --- arch/x86/boot/main.c | 4 ++-- arch/x86/include/asm/alternative.h | 22 +++++++++++----------- arch/x86/include/asm/atomic64_32.h | 2 +- arch/x86/include/asm/cpufeature.h | 2 +- arch/x86/include/asm/irq_stack.h | 2 +- arch/x86/include/asm/uaccess.h | 4 ++-- 6 files changed, 18 insertions(+), 18 deletions(-) diff --git a/arch/x86/boot/main.c b/arch/x86/boot/main.c index c4ea5258ab558..9049f390d8347 100644 --- a/arch/x86/boot/main.c +++ b/arch/x86/boot/main.c @@ -119,8 +119,8 @@ static void init_heap(void) char *stack_end; if (boot_params.hdr.loadflags & CAN_USE_HEAP) { - asm("leal %P1(%%esp),%0" - : "=r" (stack_end) : "i" (-STACK_SIZE)); + asm("leal %n1(%%esp),%0" + : "=r" (stack_end) : "i" (STACK_SIZE)); heap_end = (char *) ((size_t)boot_params.hdr.heap_end_ptr + 0x200); diff --git a/arch/x86/include/asm/alternative.h b/arch/x86/include/asm/alternative.h index 65f79092c9d9e..cb9ce0f9e78e0 100644 --- a/arch/x86/include/asm/alternative.h +++ b/arch/x86/include/asm/alternative.h @@ -288,10 +288,10 @@ static inline int alternatives_text_reserved(void *start, void *end) * Otherwise, if CPU has feature1, newinstr1 is used. * Otherwise, oldinstr is used. */ -#define alternative_input_2(oldinstr, newinstr1, ft_flags1, newinstr2, \ - ft_flags2, input...) \ - asm_inline volatile(ALTERNATIVE_2(oldinstr, newinstr1, ft_flags1, \ - newinstr2, ft_flags2) \ +#define alternative_input_2(oldinstr, newinstr1, ft_flags1, newinstr2, \ + ft_flags2, input...) \ + asm_inline volatile(ALTERNATIVE_2(oldinstr, newinstr1, ft_flags1, \ + newinstr2, ft_flags2) \ : : "i" (0), ## input) /* Like alternative_input, but with a single output argument */ @@ -301,7 +301,7 @@ static inline int alternatives_text_reserved(void *start, void *end) /* Like alternative_io, but for replacing a direct call with another one. */ #define alternative_call(oldfunc, newfunc, ft_flags, output, input...) \ - asm_inline volatile (ALTERNATIVE("call %P[old]", "call %P[new]", ft_flags) \ + asm_inline volatile (ALTERNATIVE("call %c[old]", "call %c[new]", ft_flags) \ : output : [old] "i" (oldfunc), [new] "i" (newfunc), ## input) /* @@ -310,12 +310,12 @@ static inline int alternatives_text_reserved(void *start, void *end) * Otherwise, if CPU has feature1, function1 is used. * Otherwise, old function is used. */ -#define alternative_call_2(oldfunc, newfunc1, ft_flags1, newfunc2, ft_flags2, \ - output, input...) \ - asm_inline volatile (ALTERNATIVE_2("call %P[old]", "call %P[new1]", ft_flags1,\ - "call %P[new2]", ft_flags2) \ - : output, ASM_CALL_CONSTRAINT \ - : [old] "i" (oldfunc), [new1] "i" (newfunc1), \ +#define alternative_call_2(oldfunc, newfunc1, ft_flags1, newfunc2, ft_flags2, \ + output, input...) \ + asm_inline volatile (ALTERNATIVE_2("call %c[old]", "call %c[new1]", ft_flags1, \ + "call %c[new2]", ft_flags2) \ + : output, ASM_CALL_CONSTRAINT \ + : [old] "i" (oldfunc), [new1] "i" (newfunc1), \ [new2] "i" (newfunc2), ## input) /* diff --git a/arch/x86/include/asm/atomic64_32.h b/arch/x86/include/asm/atomic64_32.h index 3486d91b8595f..d510405e4e1de 100644 --- a/arch/x86/include/asm/atomic64_32.h +++ b/arch/x86/include/asm/atomic64_32.h @@ -24,7 +24,7 @@ typedef struct { #ifdef CONFIG_X86_CMPXCHG64 #define __alternative_atomic64(f, g, out, in...) \ - asm volatile("call %P[func]" \ + asm volatile("call %c[func]" \ : out : [func] "i" (atomic64_##g##_cx8), ## in) #define ATOMIC64_DECL(sym) ATOMIC64_DECL_ONE(sym##_cx8) diff --git a/arch/x86/include/asm/cpufeature.h b/arch/x86/include/asm/cpufeature.h index 686e92d2663ee..3508f3fc928d4 100644 --- a/arch/x86/include/asm/cpufeature.h +++ b/arch/x86/include/asm/cpufeature.h @@ -173,7 +173,7 @@ extern void clear_cpu_cap(struct cpuinfo_x86 *c, unsigned int bit); static __always_inline bool _static_cpu_has(u16 bit) { asm goto( - ALTERNATIVE_TERNARY("jmp 6f", %P[feature], "", "jmp %l[t_no]") + ALTERNATIVE_TERNARY("jmp 6f", %c[feature], "", "jmp %l[t_no]") ".pushsection .altinstr_aux,\"ax\"\n" "6:\n" " testb %[bitnum]," _ASM_RIP(%P[cap_byte]) "\n" diff --git a/arch/x86/include/asm/irq_stack.h b/arch/x86/include/asm/irq_stack.h index 798183867d789..b71ad173f8776 100644 --- a/arch/x86/include/asm/irq_stack.h +++ b/arch/x86/include/asm/irq_stack.h @@ -100,7 +100,7 @@ } #define ASM_CALL_ARG0 \ - "call %P[__func] \n" \ + "call %c[__func] \n" \ ASM_REACHABLE #define ASM_CALL_ARG1 \ diff --git a/arch/x86/include/asm/uaccess.h b/arch/x86/include/asm/uaccess.h index 237dc8cdd12b9..0f9bab92a43d7 100644 --- a/arch/x86/include/asm/uaccess.h +++ b/arch/x86/include/asm/uaccess.h @@ -78,7 +78,7 @@ extern int __get_user_bad(void); int __ret_gu; \ register __inttype(*(ptr)) __val_gu asm("%"_ASM_DX); \ __chk_user_ptr(ptr); \ - asm volatile("call __" #fn "_%P4" \ + asm volatile("call __" #fn "_%c4" \ : "=a" (__ret_gu), "=r" (__val_gu), \ ASM_CALL_CONSTRAINT \ : "0" (ptr), "i" (sizeof(*(ptr)))); \ @@ -177,7 +177,7 @@ extern void __put_user_nocheck_8(void); __chk_user_ptr(__ptr); \ __ptr_pu = __ptr; \ __val_pu = __x; \ - asm volatile("call __" #fn "_%P[size]" \ + asm volatile("call __" #fn "_%c[size]" \ : "=c" (__ret_pu), \ ASM_CALL_CONSTRAINT \ : "0" (__ptr_pu), \ -- 2.43.0