diff options
| author | Al Viro <viro@zeniv.linux.org.uk> | 2020-02-15 19:46:30 +0300 |
|---|---|---|
| committer | Al Viro <viro@zeniv.linux.org.uk> | 2020-03-18 22:53:25 +0300 |
| commit | 4b842e4e25b12951fa10dedb4bc16bc47e3b850c (patch) | |
| tree | f8ef35539d2ff303275d19182770732d4e053d0e /arch/x86/include/asm/uaccess.h | |
| parent | 71c3313a38aa09339a2442809e658fd233ab0757 (diff) | |
| download | linux-4b842e4e25b12951fa10dedb4bc16bc47e3b850c.tar.xz | |
x86: get rid of small constant size cases in raw_copy_{to,from}_user()
Very few call sites where that would be triggered remain, and none
of those is anywhere near hot enough to bother.
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'arch/x86/include/asm/uaccess.h')
| -rw-r--r-- | arch/x86/include/asm/uaccess.h | 12 |
1 files changed, 0 insertions, 12 deletions
diff --git a/arch/x86/include/asm/uaccess.h b/arch/x86/include/asm/uaccess.h index ab8eab43a8a2..1cfa33b94a1a 100644 --- a/arch/x86/include/asm/uaccess.h +++ b/arch/x86/include/asm/uaccess.h @@ -378,18 +378,6 @@ do { \ : "=r" (err), ltype(x) \ : "m" (__m(addr)), "i" (errret), "0" (err)) -#define __get_user_asm_nozero(x, addr, err, itype, rtype, ltype, errret) \ - asm volatile("\n" \ - "1: mov"itype" %2,%"rtype"1\n" \ - "2:\n" \ - ".section .fixup,\"ax\"\n" \ - "3: mov %3,%0\n" \ - " jmp 2b\n" \ - ".previous\n" \ - _ASM_EXTABLE_UA(1b, 3b) \ - : "=r" (err), ltype(x) \ - : "m" (__m(addr)), "i" (errret), "0" (err)) - /* * This doesn't do __uaccess_begin/end - the exception handling * around it must do that. |