From: Alexey Kardashevskiy <aik@ozlabs.ru>
To: David Gibson <david@gibson.dropbear.id.au>
Cc: Alex Williamson <alex.williamson@redhat.com>,
qemu-ppc@nongnu.org, qemu-devel@nongnu.org
Subject: Re: [Qemu-devel] [PATCH qemu v14 15/18] vfio: Add host side IOMMU capabilities
Date: Tue, 22 Mar 2016 17:47:51 +1100 [thread overview]
Message-ID: <56F0EA97.2020802@ozlabs.ru> (raw)
In-Reply-To: <20160322042017.GD23586@voom.redhat.com>
On 03/22/2016 03:20 PM, David Gibson wrote:
> On Mon, Mar 21, 2016 at 06:47:03PM +1100, Alexey Kardashevskiy wrote:
>> There are going to be multiple IOMMUs per a container. This moves
>> the single host IOMMU parameter set to a list of VFIOHostIOMMU.
>>
>> This should cause no behavioral change and will be used later by
>> the SPAPR TCE IOMMU v2 which will also add a vfio_host_iommu_del() helper.
>>
>> Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru>
>
> This looks ok except for the name. Calling each window a separate
> "host IOMMU" is misleading. The different windows the container
> supports might be implemented by different IOMMUs on the host side, or
> it might be implemented by one IOMMU with multiple tables.
>
> Better to call them host DMA windows, or maybe container DMA windows.
VFIOHostDMAWindow it is then.
--
Alexey
next prev parent reply other threads:[~2016-03-22 6:48 UTC|newest]
Thread overview: 64+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-03-21 7:46 [Qemu-devel] [PATCH qemu v14 00/18] spapr: vfio: Enable Dynamic DMA windows (DDW) Alexey Kardashevskiy
2016-03-21 7:46 ` [Qemu-devel] [PATCH qemu v14 01/18] memory: Fix IOMMU replay base address Alexey Kardashevskiy
2016-03-22 0:49 ` David Gibson
2016-03-22 3:12 ` Alexey Kardashevskiy
2016-03-22 3:26 ` David Gibson
2016-03-22 4:28 ` Alexey Kardashevskiy
2016-03-22 4:59 ` David Gibson
2016-03-22 7:19 ` Alexey Kardashevskiy
2016-03-22 23:07 ` David Gibson
2016-03-23 10:58 ` Paolo Bonzini
2016-03-21 7:46 ` [Qemu-devel] [PATCH qemu v14 02/18] vmstate: Define VARRAY with VMS_ALLOC Alexey Kardashevskiy
2016-03-21 7:46 ` [Qemu-devel] [PATCH qemu v14 03/18] spapr_pci: Move DMA window enablement to a helper Alexey Kardashevskiy
2016-03-22 1:02 ` David Gibson
2016-03-22 3:17 ` Alexey Kardashevskiy
2016-03-22 3:28 ` David Gibson
2016-03-21 7:46 ` [Qemu-devel] [PATCH qemu v14 04/18] spapr_iommu: Move table allocation to helpers Alexey Kardashevskiy
2016-03-21 7:46 ` [Qemu-devel] [PATCH qemu v14 05/18] spapr_iommu: Introduce "enabled" state for TCE table Alexey Kardashevskiy
2016-03-22 1:11 ` David Gibson
2016-03-21 7:46 ` [Qemu-devel] [PATCH qemu v14 06/18] spapr_iommu: Finish renaming vfio_accel to need_vfio Alexey Kardashevskiy
2016-03-22 1:18 ` David Gibson
2016-03-21 7:46 ` [Qemu-devel] [PATCH qemu v14 07/18] spapr_iommu: Realloc table during migration Alexey Kardashevskiy
2016-03-22 1:23 ` David Gibson
2016-03-21 7:46 ` [Qemu-devel] [PATCH qemu v14 08/18] spapr_iommu: Migrate full state Alexey Kardashevskiy
2016-03-22 1:31 ` David Gibson
2016-03-21 7:46 ` [Qemu-devel] [PATCH qemu v14 09/18] spapr_iommu: Add root memory region Alexey Kardashevskiy
2016-03-21 7:46 ` [Qemu-devel] [PATCH qemu v14 10/18] spapr_pci: Reset DMA config on PHB reset Alexey Kardashevskiy
2016-03-21 7:46 ` [Qemu-devel] [PATCH qemu v14 11/18] memory: Add reporting of supported page sizes Alexey Kardashevskiy
2016-03-22 3:02 ` David Gibson
2016-03-21 7:47 ` [Qemu-devel] [PATCH qemu v14 12/18] vfio: Check that IOMMU MR translates to system address space Alexey Kardashevskiy
2016-03-22 3:05 ` David Gibson
2016-03-22 15:47 ` Alex Williamson
2016-03-23 0:43 ` David Gibson
2016-03-23 0:44 ` Alexey Kardashevskiy
2016-03-21 7:47 ` [Qemu-devel] [PATCH qemu v14 13/18] vfio: spapr: Add SPAPR IOMMU v2 support (DMA memory preregistering) Alexey Kardashevskiy
2016-03-22 4:04 ` David Gibson
2016-03-21 7:47 ` [Qemu-devel] [PATCH qemu v14 14/18] spapr_pci: Add and export DMA resetting helper Alexey Kardashevskiy
2016-03-21 7:47 ` [Qemu-devel] [PATCH qemu v14 15/18] vfio: Add host side IOMMU capabilities Alexey Kardashevskiy
2016-03-22 4:20 ` David Gibson
2016-03-22 6:47 ` Alexey Kardashevskiy [this message]
2016-03-21 7:47 ` [Qemu-devel] [PATCH qemu v14 16/18] spapr_iommu, vfio, memory: Notify IOMMU about starting/stopping being used by VFIO Alexey Kardashevskiy
2016-03-22 4:45 ` David Gibson
2016-03-22 6:24 ` Alexey Kardashevskiy
2016-03-22 10:22 ` David Gibson
2016-03-21 7:47 ` [Qemu-devel] [PATCH qemu v14 17/18] vfio/spapr: Use VFIO_SPAPR_TCE_v2_IOMMU Alexey Kardashevskiy
2016-03-22 5:14 ` David Gibson
2016-03-22 5:54 ` Alexey Kardashevskiy
2016-03-23 1:08 ` David Gibson
2016-03-23 2:12 ` Alexey Kardashevskiy
2016-03-23 2:53 ` David Gibson
2016-03-23 3:06 ` Alexey Kardashevskiy
2016-03-23 6:03 ` David Gibson
2016-03-24 0:03 ` Alexey Kardashevskiy
2016-03-24 9:10 ` Alexey Kardashevskiy
2016-03-29 5:30 ` David Gibson
2016-03-29 5:44 ` Alexey Kardashevskiy
2016-03-29 6:44 ` David Gibson
2016-03-21 7:47 ` [Qemu-devel] [PATCH qemu v14 18/18] spapr_pci/spapr_pci_vfio: Support Dynamic DMA Windows (DDW) Alexey Kardashevskiy
2016-03-23 2:13 ` David Gibson
2016-03-23 3:28 ` Alexey Kardashevskiy
2016-03-23 6:11 ` David Gibson
2016-03-24 2:32 ` Alexey Kardashevskiy
2016-03-29 5:22 ` David Gibson
2016-03-29 6:23 ` Alexey Kardashevskiy
2016-03-31 3:19 ` David Gibson
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