From: Joerg Roedel <joro@8bytes.org>
To: Stuart Yoder <b08248@gmail.com>
Cc: Sethi Varun-B16395 <B16395@freescale.com>,
iommu@lists.linux-foundation.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH 4/5] iommu: Add domain window handling functions
Date: Mon, 4 Feb 2013 19:56:50 +0100 [thread overview]
Message-ID: <20130204185650.GP25591@8bytes.org> (raw)
In-Reply-To: <CALRxmdCiSZgoqd8tp90kPCdA=s7SWZCTwKsFnWu7S5=U7+eRLQ@mail.gmail.com>
On Mon, Feb 04, 2013 at 12:10:51PM -0600, Stuart Yoder wrote:
> On Mon, Feb 4, 2013 at 7:18 AM, Joerg Roedel <joro@8bytes.org> wrote:
> > +static inline int iommu_domain_window_enable(struct iommu_domain *domain,
> > + u32 wnd_nr, phys_addr_t paddr,
> > + size_t size)
> > +{
> > + return -ENODEV;
> > +}
> > +
> > +static inline void iommu_domain_window_disable(struct iommu_domain *domain,
> > + u32 wnd_nr)
> > +{
> > +}
> > +
> > static inline phys_addr_t iommu_iova_to_phys(struct iommu_domain *domain,
> > unsigned long iova)
> > {
>
> This API looks workable. The one change we need is that the size argument in
> the enable API needs to be 64 bits. Our window sizes can exceed 4GB.
Okay. So if your architecture supports sizes over 2^32 then size_t
probably is already 64bits, right?
Joerg
next prev parent reply other threads:[~2013-02-04 18:56 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-02-04 13:18 [PATCH 0/5 v2] iommu: Support non-paging IOMMUs Joerg Roedel
2013-02-04 13:18 ` [PATCH 1/5] iommu: Make sure DOMAIN_ATTR_MAX is really the maximum Joerg Roedel
2013-02-04 13:18 ` [PATCH 2/5] iommu: Check for valid pgsize_bitmap in iommu_map/unmap Joerg Roedel
2013-02-04 13:18 ` [PATCH 3/5] iommu: Implement DOMAIN_ATTR_PAGING attribute Joerg Roedel
2013-02-04 13:18 ` [PATCH 4/5] iommu: Add domain window handling functions Joerg Roedel
2013-02-04 18:10 ` Stuart Yoder
2013-02-04 18:56 ` Joerg Roedel [this message]
2013-02-04 23:31 ` Stuart Yoder
2013-02-05 13:20 ` Joerg Roedel
2013-02-06 10:26 ` Joerg Roedel
2013-02-06 10:49 ` Sethi Varun-B16395
2013-02-04 13:18 ` [PATCH 5/5] iommu: Add DOMAIN_ATTR_WINDOWS domain attribute Joerg Roedel
2013-02-05 9:14 ` Sethi Varun-B16395
2013-02-05 10:41 ` Joerg Roedel
2013-02-05 10:52 ` Sethi Varun-B16395
2013-02-05 13:05 ` Joerg Roedel
2013-02-05 17:15 ` Sethi Varun-B16395
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