This is a respin of the patch series I posted a while ago updated for today's kernel:
o patch 1/4 allows an architecture to override the generic copy_user_highpage with an architecture specific implementation. For details about the aliasing issue please see the log message of that patch. o patch 2/4 passes a vma argument to copy_user_highpage. This allows an architecture to optimize its cache handling by looking at the vma's VM_EXEC flag. On architecture that do not make use of this gcc will be able to optimize the argument passing away, so no overhead. o patch 3/4 uses the facilities of the first two patches to solve the alias issue for MIPS o patch 4/4 is not a cache alias fix but allows optimizing away the cache flush operation in dup_mm(). On a MIPS 34K this accelerates fork by 12.5%. Since this patch is logically separate from 1-3 it can be applied independantly. Ralf - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/