Atsushi Nemoto wrote: >>>>>>On Wed, 24 Apr 2002 15:03:15 -0700, Jun Sun <jsun@mvista.com> said: >>>>>> > jsun> Looks like the infamous cache aliasing problem. Steve > jsun> Longerbeam had a patch which may help. Please try it and let me > jsun> know the results. > > jsun> +#define COLOUR_ALIGN(addr) (((addr)+SHMLBA-1)&~(SHMLBA-1)) > > Recent sparc64's COLOUR_ALIGN macro have pgoff argument like this. > We should do it same way for MIPS? > > #define COLOUR_ALIGN(addr,pgoff) \ > ((((addr)+SHMLBA-1)&~(SHMLBA-1)) + \ > (((pgoff)<<PAGE_SHIFT) & (SHMLBA-1))) > What is the purpose of adding the pgoff part? To avoid mapping all shared regions into the beginning of cache? Jun
