linux-kernel - Re: [RFC PATCH] iommu/amd: fix a race in fetch

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Message-ID: <20200429112014.GN21900@8bytes.org>
Date:   Wed, 29 Apr 2020 13:20:14 +0200
From:   Joerg Roedel <joro@...tes.org>
To:     Qian Cai <cai@....pw>
Cc:     iommu@...ts.linux-foundation.org, linux-kernel@...r.kernel.org
Subject: Re: [RFC PATCH] iommu/amd: fix a race in fetch_pte()

On Mon, Apr 20, 2020 at 09:26:12AM -0400, Qian Cai wrote:
> No dice. There could be some other races. For example,

Can you please test this branch:

	https://git.kernel.org/pub/scm/linux/kernel/git/joro/linux.git/log/?h=amd-iommu-fixes

It has the previous fix in it and a couple more to make sure the
device-table is updated and flushed before increase_address_space()
updates domain->pt_root.

Thanks,

	Joerg