linux-kernel - Re: [PATCH 0/2] kvm: IOMMU read-only mapping support

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Message-Id: <20130130132621.6752bb30.yoshikawa_takuya_b1@lab.ntt.co.jp>
Date:	Wed, 30 Jan 2013 13:26:21 +0900
From:	Takuya Yoshikawa <yoshikawa_takuya_b1@....ntt.co.jp>
To:	Xiao Guangrong <xiaoguangrong@...ux.vnet.ibm.com>
Cc:	Gleb Natapov <gleb@...hat.com>,
	Alex Williamson <alex.williamson@...hat.com>,
	kvm@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 0/2] kvm: IOMMU read-only mapping support

On Wed, 30 Jan 2013 12:06:32 +0800
Xiao Guangrong <xiaoguangrong@...ux.vnet.ibm.com> wrote:

> >>>> So, i guess we can do the simple fix first.
> >>>>
> >>> By simple fix you mean calling kvm_arch_flush_shadow_all() on READONLY
> >>> flag change?
> >>
> >> Simply disallow READONLY flag changing.
> > Ok, can somebody craft a patch?
> 
> Takuya, will you? ;)

I will.
Thank you for pointing out the problem.

We can revisit the API later to determine what kind of changes
should be allowed.

	Takuya
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