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From: Benjamin Herrenschmidt <benh@kernel.crashing.org>
To: Bhushan Bharat-R65777 <R65777@freescale.com>
Cc: Wood Scott-B07421 <B07421@freescale.com>,
	"linuxppc-dev@lists.ozlabs.org" <linuxppc-dev@lists.ozlabs.org>,
	Alexander Graf <agraf@suse.de>,
	"kvm-ppc@vger.kernel.org" <kvm-ppc@vger.kernel.org>,
	"kvm@vger.kernel.org" <kvm@vger.kernel.org>
Subject: Re: [PATCH 4/4] kvm: powerpc: set cache coherency only for RAM pages
Date: Sat, 27 Jul 2013 08:26:40 +1000	[thread overview]
Message-ID: <1374877600.9200.28.camel@pasglop> (raw)
In-Reply-To: <6A3DF150A5B70D4F9B66A25E3F7C888D070E5761@039-SN2MPN1-013.039d.mgd.msft.net>

On Fri, 2013-07-26 at 15:03 +0000, Bhushan Bharat-R65777 wrote:
> Will not searching the Linux PTE is a overkill?

That's the best approach. Also we are searching it already to resolve
the page fault. That does mean we search twice but on the other hand
that also means it's hot in the cache.

Cheers,
Ben

  reply	other threads:[~2013-07-26 22:26 UTC|newest]

Thread overview: 13+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2013-07-26  5:46 [PATCH 1/4] powerpc: book3e: _PAGE_LENDIAN must be _PAGE_ENDIAN Bharat Bhushan
2013-07-26  5:46 ` [PATCH 2/4] kvm: powerpc: allow guest control "E" attribute in mas2 Bharat Bhushan
2013-07-26  5:46 ` [PATCH 3/4] kvm: powerpc: allow guest control "G" " Bharat Bhushan
2013-07-26  5:46 ` [PATCH 4/4] kvm: powerpc: set cache coherency only for RAM pages Bharat Bhushan
2013-07-26  8:26   ` Benjamin Herrenschmidt
2013-07-26  8:50     ` Alexander Graf
2013-07-26  8:52       ` Bhushan Bharat-R65777
2013-07-26 15:03       ` Bhushan Bharat-R65777
2013-07-26 22:26         ` Benjamin Herrenschmidt [this message]
2013-07-30 16:22           ` Bhushan Bharat-R65777
2013-07-30 18:49             ` Scott Wood
2013-07-31  5:23               ` Bhushan Bharat-R65777
2013-07-26  8:51     ` Bhushan Bharat-R65777

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