Re: [patch 0/2] Immediate Values - jump patching update

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To: Mathieu Desnoyers <mathieu.desnoyers@...>

Cc: Ingo Molnar <mingo@...>, <akpm@...>, <linux-kernel@...>, Frank Ch. Eigler <fche@...>

Subject: Re: [patch 0/2] Immediate Values - jump patching update

Date: Sunday, May 4, 2008 - 5:05 pm

Mathieu Desnoyers wrote:
quoted text> 
> Following your own suggestion, why don't we fix gcc and make it
> interleave unlikely blocks less heavily with hot blocks ?
> 

Doing this with compiler support is definitely The Right Thing, so I 
think this is the best way.

quoted text>> Furthermore, modern CPUs often speculatively fetch *both* 
>> branches of a conditional.
>>
>> This is actually the biggest motivation for patching static branches.
> 
> Agreed. I'd like to find some info about which microarchitectures you
> have in mind. Intel Core 2 ?

Not sure about Core 2, although Core 2 definitely can track down the 
wrong branch on a mispredict.

quoted text> Let's fix gcc ! ;)

Sounds great :)

	-hpa

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Messages in current thread:

[patch 0/2] Immediate Values - jump patching update, Mathieu Desnoyers, (Sun Apr 27, 11:34 pm)

Re: [patch 0/2] Immediate Values - jump patching update, H. Peter Anvin, (Mon Apr 28, 1:21 pm)

Re: [patch 0/2] Immediate Values - jump patching update, Ingo Molnar, (Mon Apr 28, 4:25 pm)

Re: [patch 0/2] Immediate Values - jump patching update, H. Peter Anvin, (Mon Apr 28, 5:03 pm)

Re: [patch 0/2] Immediate Values - jump patching update, Ingo Molnar, (Mon Apr 28, 6:11 pm)

Re: [patch 0/2] Immediate Values - jump patching update, H. Peter Anvin, (Mon Apr 28, 6:25 pm)

Re: [patch 0/2] Immediate Values - jump patching update, Ingo Molnar, (Mon Apr 28, 6:44 pm)

Re: [patch 0/2] Immediate Values - jump patching update, H. Peter Anvin, (Mon Apr 28, 7:06 pm)

Re: [patch 0/2] Immediate Values - jump patching update, Mathieu Desnoyers, (Mon Apr 28, 9:46 pm)

Re: [patch 0/2] Immediate Values - jump patching update, H. Peter Anvin, (Mon Apr 28, 10:07 pm)

Re: [patch 0/2] Immediate Values - jump patching update, Mathieu Desnoyers, (Tue Apr 29, 8:18 am)

Re: [patch 0/2] Immediate Values - jump patching update, H. Peter Anvin, (Tue Apr 29, 11:35 am)

Re: [patch 0/2] Immediate Values - jump patching update, Mathieu Desnoyers, (Sun May 4, 10:54 am)

Re: [patch 0/2] Immediate Values - jump patching update, H. Peter Anvin, (Sun May 4, 5:05 pm)

Re: [patch 0/2] Immediate Values - jump patching update, Frank Ch. Eigler, (Mon Apr 28, 8:47 pm)

Re: [patch 0/2] Immediate Values - jump patching update, H. Peter Anvin, (Mon Apr 28, 9:08 pm)

Re: [patch 0/2] Immediate Values - jump patching update, Ingo Molnar, (Tue Apr 29, 8:08 am)

Re: [patch 0/2] Immediate Values - jump patching update, Pavel Machek, (Wed May 14, 10:53 am)

Re: [patch 0/2] Immediate Values - jump patching update, Ingo Molnar, (Mon Apr 28, 8:48 am)

Re: [patch 0/2] Immediate Values - jump patching update, Mathieu Desnoyers, (Mon Apr 28, 10:35 am)


linux-kernel:
David Miller	Re: [PATCH] Stop pmac_zilog from abusing 8250's device numbers.
Andrew Morton	Re: Dual-Licensing Linux Kernel with GPL V2 and GPL V3
Greg Kroah-Hartman	[PATCH 010/196] Chinese: add translation of Codingstyle
Jan Engelhardt	intel iommu (Re: -mm merge plans for 2.6.23)
linux-netdev:
Gerrit Renker	[PATCH 27/37] dccp: Integration of dynamic feature activation - part 2 (server side)
David Miller	Re: [GIT]: Networking
Jarek Poplawski	Re: [PATCH] pkt_sched: Destroy gen estimators under rtnl_lock().
Felix von Leitner	socket api problem: can't bind an ipv6 socket to ::ffff:0.0.0.0
git:

openbsd-misc:

Re: [patch 0/2] Immediate Values - jump patching update

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