Messages in this thread | ![/](/images/icornerl.gif) | | Date | Fri, 14 Oct 2011 14:53:53 -0700 | From | "H. Peter Anvin" <> | Subject | Re: [PATCH RFC V4 09/10] x86/jump_label: use GENERIC_NOP5_ATOMIC instead of jmp5 +0 |
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On 10/13/2011 11:37 AM, Steven Rostedt wrote: > On Thu, 2011-10-13 at 09:57 -0700, Jeremy Fitzhardinge wrote: >> On 10/13/2011 08:40 AM, H. Peter Anvin wrote: >>> On 10/12/2011 05:08 PM, Jeremy Fitzhardinge wrote: >>>> From: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com> >>>> >>>> GENERIC_NOP5_ATOMIC should make a better nop. >>>> >>> On 32 bits, yes. On 64 bits you should use P6_NOP5_ATOMIC. >> >> Something like this? >> > > No, we only care about 5byte nops here. Look at ideal_nop in > alterative.c >
He needs a compile-time alternative.
-hpa
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