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 EE43C14402B; Thu, 29 Feb 2024 20:39:49 +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=1709239190; cv=none; b=CFbZwrR6emJ6GOH6chnvVFcBM1W0cZahvr38B+Lu6cXLkG46du1JrVpj3YT5YdJZxoCjn2UB+wW6XeWt7ZBtpIay2qRoy88DYZUjKkJIZqd695oxGzl5k+IPFB3dUj1RWznleU1ZQzyBVtJCI6s1X1fPrDZdR056mSOjpwTiuyo= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1709239190; c=relaxed/simple; bh=du2aFlm+xs0pTQLEJ971wtsOkmAlatVJgbY9t73ZhnI=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=IrlXR4IMY2Zlg4Zv5/GHJZ7u8ym1eyfIlFFKOsBiG4tKyIL5S9MG2/1pVDOTV55L0Hx7WwXV6Qa5OTDduF56ZFu9W18IwFSfQrfUh7EoK9Kd14iqbNPJpPzr5xKYmU/aXzz0msqwl1QVfvK8edxC1eS8b7waZCuI7+aAGvIwINk= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=HPnApAQf; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="HPnApAQf" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 37C2BC433C7; Thu, 29 Feb 2024 20:39:48 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1709239189; bh=du2aFlm+xs0pTQLEJ971wtsOkmAlatVJgbY9t73ZhnI=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=HPnApAQfkXgZKnOOfKBhvt5f08XpOzHThJEb+BMNqxwguOPtfSuWwCpwlcJjsXY49 mMotL08HUHgcs/nGDXGmQMP0QzKHED62fDK2N2R4+x25YmJfZ2AiU6intBaDS1EfOr z/hX3iMYqMx04qlkdXuG0NGkVuiz/7yd8f1AZ4pFQ0zZ8cstxyXPAmJ8b1qQMPUC8H fYtuQw8020rWsz2eP/N9GGAXZ/Ki2/4XmUREqZ7k9H1m1C22DKEbUj11/aqLALfuKf u+aXiL+A0blmPkZl/Brcq3Oml647A2zZitnFAxh7Jhd4B6ES8ifwoBnximGCHThMQk 3xQnivzahBREg== From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Hou Tao , Sohil Mehta , Alexei Starovoitov , Sasha Levin , tglx@linutronix.de, mingo@redhat.com, bp@alien8.de, dave.hansen@linux.intel.com, x86@kernel.org, luto@kernel.org, peterz@infradead.org Subject: [PATCH AUTOSEL 6.6 07/22] x86/mm: Move is_vsyscall_vaddr() into asm/vsyscall.h Date: Thu, 29 Feb 2024 15:39:00 -0500 Message-ID: <20240229203933.2861006-7-sashal@kernel.org> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20240229203933.2861006-1-sashal@kernel.org> References: <20240229203933.2861006-1-sashal@kernel.org> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore X-stable-base: Linux 6.6.18 Content-Transfer-Encoding: 8bit From: Hou Tao [ Upstream commit ee0e39a63b78849f8abbef268b13e4838569f646 ] Move is_vsyscall_vaddr() into asm/vsyscall.h to make it available for copy_from_kernel_nofault_allowed() in arch/x86/mm/maccess.c. Reviewed-by: Sohil Mehta Signed-off-by: Hou Tao Link: https://lore.kernel.org/r/20240202103935.3154011-2-houtao@huaweicloud.com Signed-off-by: Alexei Starovoitov Signed-off-by: Sasha Levin --- arch/x86/include/asm/vsyscall.h | 10 ++++++++++ arch/x86/mm/fault.c | 9 --------- 2 files changed, 10 insertions(+), 9 deletions(-) diff --git a/arch/x86/include/asm/vsyscall.h b/arch/x86/include/asm/vsyscall.h index ab60a71a8dcb9..472f0263dbc61 100644 --- a/arch/x86/include/asm/vsyscall.h +++ b/arch/x86/include/asm/vsyscall.h @@ -4,6 +4,7 @@ #include #include +#include #ifdef CONFIG_X86_VSYSCALL_EMULATION extern void map_vsyscall(void); @@ -24,4 +25,13 @@ static inline bool emulate_vsyscall(unsigned long error_code, } #endif +/* + * The (legacy) vsyscall page is the long page in the kernel portion + * of the address space that has user-accessible permissions. + */ +static inline bool is_vsyscall_vaddr(unsigned long vaddr) +{ + return unlikely((vaddr & PAGE_MASK) == VSYSCALL_ADDR); +} + #endif /* _ASM_X86_VSYSCALL_H */ diff --git a/arch/x86/mm/fault.c b/arch/x86/mm/fault.c index ab778eac19520..a9d69ec994b75 100644 --- a/arch/x86/mm/fault.c +++ b/arch/x86/mm/fault.c @@ -798,15 +798,6 @@ show_signal_msg(struct pt_regs *regs, unsigned long error_code, show_opcodes(regs, loglvl); } -/* - * The (legacy) vsyscall page is the long page in the kernel portion - * of the address space that has user-accessible permissions. - */ -static bool is_vsyscall_vaddr(unsigned long vaddr) -{ - return unlikely((vaddr & PAGE_MASK) == VSYSCALL_ADDR); -} - static void __bad_area_nosemaphore(struct pt_regs *regs, unsigned long error_code, unsigned long address, u32 pkey, int si_code) -- 2.43.0