linux-kernel - Re: [patch 0/9] x86, xsave: xsave/xrstor support

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Message-ID: <4890A16D.1000201@zytor.com>
Date:	Wed, 30 Jul 2008 10:14:21 -0700
From:	"H. Peter Anvin" <hpa@...or.com>
To:	Suresh Siddha <suresh.b.siddha@...el.com>
CC:	Ingo Molnar <mingo@...e.hu>,
	"tglx@...utronix.de" <tglx@...utronix.de>,
	"torvalds@...ux-foundation.org" <torvalds@...ux-foundation.org>,
	"akpm@...ux-foundation.org" <akpm@...ux-foundation.org>,
	"arjan@...ux.intel.com" <arjan@...ux.intel.com>,
	"roland@...hat.com" <roland@...hat.com>,
	"drepper@...hat.com" <drepper@...hat.com>,
	"mikpe@...uu.se" <mikpe@...uu.se>,
	"chrisw@...s-sol.org" <chrisw@...s-sol.org>,
	"andi@...stfloor.org" <andi@...stfloor.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [patch 0/9] x86, xsave: xsave/xrstor support

Suresh Siddha wrote:

>> It somewhat concerns me, because one of the conflicts is generated by
>> collision with x2apic.  The rest of them I don't think are too problematic.
> 
> hpa, confilicts with x2apic branch are very small and related to cpuid bits.
> 
> commit 04df16d2465cbb59b84c9c57ad865dbbeebadad8
> Author: Suresh Siddha <suresh.b.siddha@...el.com>
> Date:   Tue Jul 29 10:29:18 2008 -0700
> 
>     x86, xsave: xsave cpuid feature bits
> 
>     Add xsave CPU feature bits.
>     
> and 
> 
> commit 32e1d0a0651004f5fe47f85a2a5c725ad579a90c
> Author: Suresh Siddha <suresh.b.siddha@...el.com>
> Date:   Thu Jul 10 11:16:50 2008 -0700
> 
>     x64, x2apic/intr-remap: cpuid bits for x2apic feature
>     
>     cpuid feature for x2apic.
> 
> Both of these patches are straight forward, simple and can be moved
> to x86/core(?) now, if that helps.

This is true.  Cherry-picking those to the x86/core branch is probably 
the easiest, even if that means they're duplicated in the x2apic branch 
(I presume we don't want to rebase x2apic).

	-hpa
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