On Wed, Jul 15, 2009 at 12:48:02PM -0700, Richard Henderson wrote: > On 07/13/2009 03:16 PM, Matt Turner forwarded: >>>>> The problem is that the memchr() function on alpha uses prefetch, which >>>>> can cause a page boundary to be crossed, while the standards (POSIX and >>>>> C99) says it should stop when a match is found. > > That's not supposed to matter -- faults from prefetch are supposed to be > ignored; see do_page_fault:
The problem is that the "prefech" is not done with $31, but using $1 and $3. It is called "prefetch" in the code, but it is more like "read a value in advance". -- Aurelien Jarno GPG: 1024D/F1BCDB73 [email protected] http://www.aurel32.net -- To UNSUBSCRIBE, email to [email protected] with a subject of "unsubscribe". Trouble? Contact [email protected]
