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Benjamin Herrenschmidt 859deea949 [POWERPC] Cell timebase bug workaround ... The Cell CPU timebase has an erratum. When reading the entire 64 bits of the timebase with one mftb instruction, there is a handful of cycles window during which one might read a value with the low order 32 bits already reset to 0x00000000 but the high order bits not yet incremeted by one. This fixes it by reading the timebase again until the low order 32 bits is no longer 0. That might introduce occasional latencies if hitting mftb just at the wrong time, but no more than 70ns on a cell blade, and that was considered acceptable. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Acked-by: Olof Johansson <olof@lixom.net> Signed-off-by: Paul Mackerras <paulus@samba.org>		19 years ago
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.gitignore	[PATCH] powerpc: Add some missing .gitignore's	19 years ago
Makefile	[PATCH] vDSO hash-style fix	19 years ago
cacheflush.S	Remove obsolete #include <linux/config.h>	19 years ago
datapage.S	Remove obsolete #include <linux/config.h>	19 years ago
gettimeofday.S	[POWERPC] Cell timebase bug workaround	19 years ago
note.S	[PATCH] powerpc: Merge vdso's and add vdso support to 32 bits kernel	19 years ago
sigtramp.S	Remove obsolete #include <linux/config.h>	19 years ago
vdso64.lds.S	[POWERPC] Support feature fixups in vdso's	19 years ago
vdso64_wrapper.S	[PATCH] powerpc: Merge vdso's and add vdso support to 32 bits kernel	19 years ago