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| author | Al Viro <viro@zeniv.linux.org.uk> | 2020-02-17 01:11:48 +0300 |
|---|---|---|
| committer | Al Viro <viro@zeniv.linux.org.uk> | 2020-05-29 23:11:48 +0300 |
| commit | c281a6c1ac6b0867e4341ea801030fa9a62157f9 (patch) | |
| tree | 9ed14578728ee19f2fcea2dab837888d2ad0503d /arch/x86/include/asm | |
| parent | 0a5ea224b2fdf9dca9291ef7b5a12fd846a5dc34 (diff) | |
| download | linux-c281a6c1ac6b0867e4341ea801030fa9a62157f9.tar.xz | |
x86: switch 32bit csum_and_copy_to_user() to user_access_{begin,end}()
consolidate HAVE_CSUM_COPY_USER for 32bit and 64bit, while are at it
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'arch/x86/include/asm')
| -rw-r--r-- | arch/x86/include/asm/checksum.h | 1 | ||||
| -rw-r--r-- | arch/x86/include/asm/checksum_32.h | 6 | ||||
| -rw-r--r-- | arch/x86/include/asm/checksum_64.h | 3 |
3 files changed, 3 insertions, 7 deletions
diff --git a/arch/x86/include/asm/checksum.h b/arch/x86/include/asm/checksum.h index 1ab9572ae4c2..0ada98d5d09f 100644 --- a/arch/x86/include/asm/checksum.h +++ b/arch/x86/include/asm/checksum.h @@ -1,5 +1,6 @@ /* SPDX-License-Identifier: GPL-2.0 */ #define _HAVE_ARCH_COPY_AND_CSUM_FROM_USER 1 +#define HAVE_CSUM_COPY_USER #ifdef CONFIG_X86_32 # include <asm/checksum_32.h> #else diff --git a/arch/x86/include/asm/checksum_32.h b/arch/x86/include/asm/checksum_32.h index 2487b7fc2d24..11624c8a9d8d 100644 --- a/arch/x86/include/asm/checksum_32.h +++ b/arch/x86/include/asm/checksum_32.h @@ -176,7 +176,6 @@ static inline __sum16 csum_ipv6_magic(const struct in6_addr *saddr, /* * Copy and checksum to user */ -#define HAVE_CSUM_COPY_USER static inline __wsum csum_and_copy_to_user(const void *src, void __user *dst, int len, __wsum sum, @@ -185,11 +184,10 @@ static inline __wsum csum_and_copy_to_user(const void *src, __wsum ret; might_sleep(); - if (access_ok(dst, len)) { - stac(); + if (user_access_begin(dst, len)) { ret = csum_partial_copy_generic(src, (__force void *)dst, len, sum, NULL, err_ptr); - clac(); + user_access_end(); return ret; } diff --git a/arch/x86/include/asm/checksum_64.h b/arch/x86/include/asm/checksum_64.h index 2f8435542376..0a289b87e872 100644 --- a/arch/x86/include/asm/checksum_64.h +++ b/arch/x86/include/asm/checksum_64.h @@ -129,9 +129,6 @@ static inline __sum16 csum_tcpudp_magic(__be32 saddr, __be32 daddr, */ extern __wsum csum_partial(const void *buff, int len, __wsum sum); -#define HAVE_CSUM_COPY_USER 1 - - /* Do not call this directly. Use the wrappers below */ extern __visible __wsum csum_partial_copy_generic(const void *src, const void *dst, int len, __wsum sum, |