linux-kernel - Re: [PATCH kernel v11 05/34] powerpc/iommu: Always release iommu_table in iommu_free

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Message-ID: <20150601040304.GG22789@voom.redhat.com>
Date:	Mon, 1 Jun 2015 14:03:04 +1000
From:	David Gibson <david@...son.dropbear.id.au>
To:	Alexey Kardashevskiy <aik@...abs.ru>
Cc:	linuxppc-dev@...ts.ozlabs.org,
	Alex Williamson <alex.williamson@...hat.com>,
	Benjamin Herrenschmidt <benh@...nel.crashing.org>,
	Gavin Shan <gwshan@...ux.vnet.ibm.com>,
	Paul Mackerras <paulus@...ba.org>, kvm@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH kernel v11 05/34] powerpc/iommu: Always release
 iommu_table in iommu_free_table()

On Fri, May 29, 2015 at 06:44:29PM +1000, Alexey Kardashevskiy wrote:
> At the moment iommu_free_table() only releases memory if
> the table was initialized for the platform code use, i.e. it had
> it_map initialized (which purpose is to track DMA memory space use).
> 
> With dynamic DMA windows, we will need to be able to release
> iommu_table even if it was used for VFIO in which case it_map is NULL
> so does the patch.
> 
> Signed-off-by: Alexey Kardashevskiy <aik@...abs.ru>

Reviewed-by: David Gibson <david@...son.dropbear.id.au>

-- 
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