From mboxrd@z Thu Jan  1 00:00:00 1970
From: Avi Kivity <avi@redhat.com>
Subject: Re: [PATCH 7/9] Add VMRUN handler v3
Date: Sat, 27 Sep 2008 15:58:03 +0300
Message-ID: <48DE2DDB.1010302@redhat.com>
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Cc: Joerg Roedel <joerg.roedel@amd.com>,
	"kvm@vger.kernel.org" <kvm@vger.kernel.org>,
	"joro@8bytes.org" <joro@8bytes.org>,
	"anthony@codemonkey.ws" <anthony@codemonkey.ws>
To: Alexander Graf <agraf@suse.de>
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Alexander Graf wrote:
>
> Is copying one page really that expensive? Is there any accelerated 
> function available for that that copies it with SSE or so? :-)
>

'rep movs' is supposed to be accelerated, doing cacheline-by-cacheline 
copies (at least on Intel).

In any case the kernel memcpy() should pick the fastest method.

-- 
I have a truly marvellous patch that fixes the bug which this
signature is too narrow to contain.