linux-kernel - Re: [patch 0/7] x86, cpa: cpa related changes to be inline with TLB Application note

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Message-ID: <20080924081511.GB19354@elte.hu>
Date:	Wed, 24 Sep 2008 10:15:11 +0200
From:	Ingo Molnar <mingo@...e.hu>
To:	Suresh Siddha <suresh.b.siddha@...el.com>
Cc:	hpa@...or.com, tglx@...utronix.de, arjan@...ux.intel.com,
	venkatesh.pallipadi@...el.com, jeremy@...p.org,
	linux-kernel@...r.kernel.org
Subject: Re: [patch 0/7] x86, cpa: cpa related changes to be inline with
	TLB Application note - v2


* Suresh Siddha <suresh.b.siddha@...el.com> wrote:

> v2:
>  1. Fix the deadlock associated with smp call function and spin_lock_irqsave()
>     for pgd_lock.
>  2. No alias checks for __set_pages_np()/__set_pages_p() avoiding the large
>     text page split from atomic context in CONFIG_DEBUG_PAGEALLOC.
>  3. Serialize cpa() for !CONFIG_DEBUG_PAGEALLOC, so that a cpu with stale
>     large page tlb's(but small PTE's in memory) won't do a cpa() in parallel
>     to some other cpu splitting large pages and changing page attribute for
>     a small page.

ok, looks good and the code got simpler as well. I've started testing it 
in tip/master and will push out these updates to tip/x86/pat if they 
pass. (v1 had stability problems)

Thanks,

	Ingo
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