linux-kernel - Re: [PATCH 5/5] add ksm kernel shared memory driver.

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Message-ID: <49EC584B.3060809@redhat.com>
Date:	Mon, 20 Apr 2009 14:11:07 +0300
From:	Avi Kivity <avi@...hat.com>
To:	Alan Cox <alan@...rguk.ukuu.org.uk>
CC:	Izik Eidus <ieidus@...hat.com>, akpm@...ux-foundation.org,
	linux-kernel@...r.kernel.org, linux-mm@...ck.org,
	kvm@...r.kernel.org, aarcange@...hat.com, chrisw@...hat.com,
	mtosatti@...hat.com, hugh@...itas.com
Subject: Re: [PATCH 5/5] add ksm kernel shared memory driver.

Alan Cox wrote:
> The minor number you are using already belongs to another project.
>
> 10,234 is free but it would be good to know what device naming is
> proposed. I imagine other folks would like to know why you aren't using
> sysfs or similar or extending /dev/kvm ?
>   

ksm was deliberately made independent of kvm.  While there may or may 
not be uses of ksm without kvm (you could run ordinary qemu, but no one 
would do this in a production deployment), keeping them separate helps 
avoid unnecessary interdependencies.  For example all tlb flushes are 
mediated through mmu notifiers instead of ksm hooking directly into kvm.

-- 
error compiling committee.c: too many arguments to function

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