On Tue, Nov 11, 2008 at 05:35:50PM -0800, Luck, Tony wrote: > Does the use of "rum" instruction need some paravirtualization? It is > not in a critical path (used a couple of times during boot). No, because rum isn't privileged instruction. At lease xen/ia64 doesn't need it. thanks, > > diff --git a/arch/ia64/kernel/entry.S b/arch/ia64/kernel/entry.S > index 7ef0c59..595a0b6 100644 > --- a/arch/ia64/kernel/entry.S > +++ b/arch/ia64/kernel/entry.S > @@ -499,6 +499,7 @@ GLOBAL_ENTRY(prefetch_stack) > END(prefetch_stack) > > GLOBAL_ENTRY(kernel_execve) > + rum IA64_PSR_AC > mov r15=__NR_execve // put syscall number in place > break __BREAK_SYSCALL > br.ret.sptk.many rp > -- yamahata -- To unsubscribe from this list: 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
|