From: Joerg Roedel <joro@8bytes.org>
To: Auger Eric <eric.auger@redhat.com>
Cc: drjones@redhat.com, jason@lakedaemon.net, kvm@vger.kernel.org,
marc.zyngier@arm.com, punit.agrawal@arm.com, will.deacon@arm.com,
linux-kernel@vger.kernel.org, iommu@lists.linux-foundation.org,
diana.craciun@nxp.com, alex.williamson@redhat.com,
pranav.sawargaonkar@gmail.com,
linux-arm-kernel@lists.infradead.org, tglx@linutronix.de,
robin.murphy@arm.com, christoffer.dall@linaro.org,
eric.auger.pro@gmail.com
Subject: Re: [RFC v2 8/8] iommu/arm-smmu: implement add_reserved_regions callback
Date: Fri, 11 Nov 2016 12:42:23 +0100 [thread overview]
Message-ID: <20161111114223.GP2078@8bytes.org> (raw)
In-Reply-To: <f4537e43-0237-e478-eacd-b107458628b8@redhat.com>
On Thu, Nov 10, 2016 at 07:00:52PM +0100, Auger Eric wrote:
> GICv2m and GICV3 ITS use dma-mapping iommu_dma_map_msi_msg to allocate
> an MSI IOVA on-demand.
Yes, and it the right thing to do there because as a DMA-API
implementation the dma-iommu code cares about the address space
allocation.
As I understand it this is different in your case, as someone else is
defining the address space layout. So why do you need to allocate it
yourself?
Joerg
next prev parent reply other threads:[~2016-11-11 11:42 UTC|newest]
Thread overview: 38+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-11-04 11:23 [RFC v2 0/8] KVM PCIe/MSI passthrough on ARM/ARM64 - Alt II Eric Auger
2016-11-04 11:23 ` [RFC v2 1/8] vfio: fix vfio_info_cap_add/shift Eric Auger
2016-11-04 11:24 ` [RFC v2 2/8] iommu/iova: fix __alloc_and_insert_iova_range Eric Auger
2016-11-10 15:22 ` Joerg Roedel
2016-11-10 15:41 ` Auger Eric
2016-11-04 11:24 ` [RFC v2 3/8] iommu/dma: Allow MSI-only cookies Eric Auger
2016-11-14 12:36 ` Robin Murphy
2016-11-14 23:23 ` Auger Eric
2016-11-15 14:52 ` Robin Murphy
2016-11-04 11:24 ` [RFC v2 4/8] iommu: Add a list of iommu_reserved_region in iommu_domain Eric Auger
2016-11-04 14:00 ` Robin Murphy
2016-11-10 11:22 ` Auger Eric
2016-11-10 11:54 ` Robin Murphy
2016-11-10 12:14 ` Auger Eric
2016-11-10 12:48 ` Robin Murphy
2016-11-10 15:37 ` Joerg Roedel
2016-11-10 15:42 ` Auger Eric
2016-11-04 11:24 ` [RFC v2 5/8] vfio/type1: Introduce RESV_IOVA_RANGE capability Eric Auger
2016-11-04 11:24 ` [RFC v2 6/8] iommu: Handle the list of reserved regions Eric Auger
2016-11-04 11:24 ` [RFC v2 7/8] iommu/vt-d: Implement add_reserved_regions callback Eric Auger
2016-11-04 11:24 ` [RFC v2 8/8] iommu/arm-smmu: implement " Eric Auger
2016-11-04 14:16 ` Robin Murphy
2016-11-10 15:46 ` Joerg Roedel
2016-11-10 15:57 ` Auger Eric
2016-11-10 16:13 ` Joerg Roedel
2016-11-10 18:00 ` Auger Eric
2016-11-11 11:42 ` Joerg Roedel [this message]
2016-11-11 15:47 ` Auger Eric
2016-11-11 16:22 ` Joerg Roedel
2016-11-11 16:45 ` Auger Eric
2016-11-14 15:31 ` Joerg Roedel
2016-11-14 16:08 ` Auger Eric
2016-11-14 16:20 ` Joerg Roedel
2016-11-14 16:57 ` Auger Eric
2016-11-10 16:07 ` Robin Murphy
2016-11-10 16:16 ` Joerg Roedel
2016-11-11 14:34 ` Robin Murphy
2016-11-11 15:03 ` Joerg Roedel
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