Chen, Kenneth W wrote: [Wed May 03 2006, 02:08:47PM EDT] > Bob Picco wrote on Wednesday, May 03, 2006 6:38 AM > > The removal of -ffreestanding compiler flag in 2.6.17-rcX (commit id > > 6edfba1b33c701108717f4e036320fc39abe1912) causes strcpy calls > > with a known size for the source string to be replaced with memcpy which > > is faster. ia64 memcpy has return values which are unlike stdlibc and > > the other arch memcpy routines examined by me in the kernel. The ia64 return > > values are 0 for success and number of bytes copied for failure. Thus any > > instance of pointer = strcpy(dest, "some string") has zero assigned to > > pointer. I detected this when testing kgdb on 2.6.17-rc3. > > > > The implementation in memcpy_mck.S doesn't leave a single scratch > > register or predicate. I didn't pursue very long for a solution. > > I thought I fixed that about 3 years ago: > > http://marc.theaimsgroup.com/?l=linux-ia64&m=105590709805435&w=2 > > Did it fall through the crack? I'm not sure what's going on. > > - Ken It looks to have definitely fallen through a crack or two. I applied to rc3 and boot tested for you. I assume you'll post patch again. bob - : send the line "unsubscribe linux-ia64" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
|