linux-kernel - Re: [PATCH] KVM: x86: fix vcpu->mmio

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Message-ID: <50856804.5030408@redhat.com>
Date:	Mon, 22 Oct 2012 17:36:36 +0200
From:	Avi Kivity <avi@...hat.com>
To:	Gleb Natapov <gleb@...hat.com>
CC:	Jan Kiszka <jan.kiszka@...mens.com>,
	Xiao Guangrong <xiaoguangrong@...ux.vnet.ibm.com>,
	Marcelo Tosatti <mtosatti@...hat.com>,
	LKML <linux-kernel@...r.kernel.org>, KVM <kvm@...r.kernel.org>
Subject: Re: [PATCH] KVM: x86: fix vcpu->mmio_fragments overflow

On 10/22/2012 04:00 PM, Gleb Natapov wrote:
> Yes, with frame buffer is seems to be the case. One can imagine ROMD
> device that is MMIO on write but still can be accessed for read from
> kernel, but it cannot be coalesced even if coalesced buffer is flushed
> on every exit.

You cannot enable coalescing on such a device.


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