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| author |  Peter Zijlstra <peterz@infradead.org>
| 2021-11-15 17:46:39 +0100 |
|---|---|---|
| committer | Peter Zijlstra <peterz@infradead.org>
| 2021-12-11 09:09:45 +0100 |
| commit | c6dbd3e5e69cf3ca47a3864115d4cbdd44619243 (patch) | |
| tree | 1b0c415e73a50ff8f0e036856c325ceccf0db483 /arch/x86/lib/memcpy_32.c | |
| parent | bitfield.h: Fix "type of reg too small for mask" test (diff) | |
| download | linux-c6dbd3e5e69cf3ca47a3864115d4cbdd44619243.tar.gz linux-c6dbd3e5e69cf3ca47a3864115d4cbdd44619243.tar.bz2 linux-c6dbd3e5e69cf3ca47a3864115d4cbdd44619243.zip | |
x86/mmx_32: Remove X86_USE_3DNOW
This code puts an exception table entry on the PREFETCH instruction to
overwrite it with a JMP.d8 when it triggers an exception. Except of
course, our code is no longer writable, also SMP.
Instead of fixing this broken mess, simply take it out.
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Acked-by: Borislav Petkov <bp@suse.de>
Link: https://lkml.kernel.org/r/YZKQzUmeNuwyvZpk@hirez.programming.kicks-ass.net
Diffstat (limited to 'arch/x86/lib/memcpy_32.c')
| -rw-r--r-- | arch/x86/lib/memcpy_32.c | 4 |
1 files changed, 0 insertions, 4 deletions
diff --git a/arch/x86/lib/memcpy_32.c b/arch/x86/lib/memcpy_32.c index e565d1c9019e..3a6e6cfe8c35 100644 --- a/arch/x86/lib/memcpy_32.c +++ b/arch/x86/lib/memcpy_32.c @@ -7,11 +7,7 @@ __visible void *memcpy(void *to, const void *from, size_t n) { -#if defined(CONFIG_X86_USE_3DNOW) && !defined(CONFIG_FORTIFY_SOURCE) - return __memcpy3d(to, from, n); -#else return __memcpy(to, from, n); -#endif } EXPORT_SYMBOL(memcpy); |