From: Joerg Roedel <joro-zLv9SwRftAIdnm+yROfE0A@public.gmane.org>
To: Robin Murphy <robin.murphy-5wv7dgnIgG8@public.gmane.org>
Cc: iommu-cunTk1MwBs9QetFLy7KEm3xJsTq8ys+cHZ5vskTnxNA@public.gmane.org
Subject: Re: [PATCH RESEND] iommu/iova: Extend cached node lookup condition
Date: Tue, 15 Nov 2016 12:40:09 +0100 [thread overview]
Message-ID: <20161115114008.GB24857@8bytes.org> (raw)
In-Reply-To: <1b035087a5a3ca8de9daf10bf067f3bd5c0e6f61.1478889292.git.robin.murphy-5wv7dgnIgG8@public.gmane.org>
On Fri, Nov 11, 2016 at 06:35:46PM +0000, Robin Murphy wrote:
> When searching for a free IOVA range, we optimise the tree traversal
> by starting from the cached32_node, instead of the last node, when
> limit_pfn is equal to dma_32bit_pfn. However, if limit_pfn happens to
> be smaller, then we'll go ahead and start from the top even though
> dma_32bit_pfn is still a more suitable upper bound. Since this is
> clearly a silly thing to do, adjust the lookup condition appropriately.
>
> Signed-off-by: Robin Murphy <robin.murphy-5wv7dgnIgG8@public.gmane.org>
> ---
> drivers/iommu/iova.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
Applied, thanks.
prev parent reply other threads:[~2016-11-15 11:40 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-11-11 18:35 [PATCH RESEND] iommu/iova: Extend cached node lookup condition Robin Murphy
[not found] ` <1b035087a5a3ca8de9daf10bf067f3bd5c0e6f61.1478889292.git.robin.murphy-5wv7dgnIgG8@public.gmane.org>
2016-11-15 11:40 ` Joerg Roedel [this message]
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