| commit | c0dde15b5dba7e02ce6f36eab3a4d1c166f9951b | |
| author | Ulrich Drepper <drepper@redhat.com> | |
| Fri, 5 Nov 2010 11:57:46 +0000 (5 07:57 -0400) | ||
| committer | Ulrich Drepper <drepper@redhat.com> | |
| Fri, 5 Nov 2010 11:57:46 +0000 (5 07:57 -0400) | ||
| tree | ba46149312b4ab5e66771663289e3754bcc45d84 | treesnapshot (tar.gz zip) |
| parent | 0e516e0e14f2f9783a21cd1727bc53776341f857 | commitdiff |
32bit memset-sse2.S fails with uneven cache size
32bit memset-sse2.S assumes cache size is multiple of 128 bytes. If
it isn't true, memset-sse2.S will fail. For example, a processor can
have 24576 KB L3 cache and 20 cores. That is 2516582 byte per core. Half
of it is 1258291, which isn't helpful for vector instructions. This
patch rounds cache sizes to multiple of 256 bytes and adds "raw" cache
sizes.
32bit memset-sse2.S assumes cache size is multiple of 128 bytes. If
it isn't true, memset-sse2.S will fail. For example, a processor can
have 24576 KB L3 cache and 20 cores. That is 2516582 byte per core. Half
of it is 1258291, which isn't helpful for vector instructions. This
patch rounds cache sizes to multiple of 256 bytes and adds "raw" cache
sizes.
| ChangeLog | diffblobblamehistory | |
| NEWS | diffblobblamehistory | |
| sysdeps/i386/i686/cacheinfo.c | diffblobblamehistory | |
| sysdeps/x86_64/cacheinfo.c | diffblobblamehistory |