From: Paolo Bonzini <pbonzini@redhat.com>
To: David Gibson <david@gibson.dropbear.id.au>
Cc: aik@ozlabs.ru, alex.williamson@redhat.com, mst@redhat.com,
qemu-devel@nongnu.org, agraf@suse.de
Subject: Re: [Qemu-devel] [0/8] RFC: VFIO and guest side IOMMUs, revisited
Date: Mon, 13 May 2013 14:23:30 +0200 [thread overview]
Message-ID: <5190DB42.10002@redhat.com> (raw)
In-Reply-To: <1368442465-14363-1-git-send-email-david@gibson.dropbear.id.au>
Il 13/05/2013 12:54, David Gibson ha scritto:
> Specifically the way the iommu is
> determined from a callback in the PCIBus means that it won't be
> assigned for devices under a PCI-PCI bridge.
Right. I saw the report from Alexey, but I am a bit wary of touching it
because it's not a regression. In fact there is even a FIXME for it:
/* FIXME: inherit memory region from bus creator */
Perhaps we can make pci_iommu_as a Bus method, where the default
implementation looks up along the chain, and the end of the recursion is
in SysBus or in PCI buses that have set the callback.
Paolo
next prev parent reply other threads:[~2013-05-13 12:23 UTC|newest]
Thread overview: 28+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-05-13 10:54 [Qemu-devel] [0/8] RFC: VFIO and guest side IOMMUs, revisited David Gibson
2013-05-13 10:54 ` [Qemu-devel] [PATCH 1/8] iommu: Fix compile error in ioapic.c David Gibson
2013-05-13 12:14 ` Paolo Bonzini
2013-05-13 10:54 ` [Qemu-devel] [PATCH 2/8] pci: Don't del_subgregion on a non subregion David Gibson
2013-05-13 12:14 ` Paolo Bonzini
2013-05-13 10:54 ` [Qemu-devel] [PATCH 3/8] pci: Rework PCI iommu lifetime assumptions David Gibson
2013-05-13 12:15 ` Paolo Bonzini
2013-05-13 10:54 ` [Qemu-devel] [PATCH 4/8] pci: Use AddressSpace rather than MemoryRegion to represent PCI DMA space David Gibson
2013-05-13 12:16 ` Paolo Bonzini
2013-05-13 10:54 ` [Qemu-devel] [PATCH 5/8] pci: Introduce helper to retrieve a PCI device's DMA address space David Gibson
2013-05-13 10:54 ` [Qemu-devel] [PATCH 6/8] memory: Sanity check that no listeners remain on a destroyed AddressSpace David Gibson
2013-05-13 11:10 ` Peter Maydell
2013-05-13 11:48 ` David Gibson
2013-05-13 12:07 ` Peter Maydell
2013-05-13 12:19 ` Paolo Bonzini
2013-05-13 12:57 ` David Gibson
2013-05-13 10:54 ` [Qemu-devel] [PATCH 7/8] vfio: Introduce VFIO address spaces David Gibson
2013-05-13 21:32 ` Alex Williamson
2013-05-14 1:00 ` David Gibson
2013-05-13 10:54 ` [Qemu-devel] [PATCH 8/8] vfio: Create VFIOAddressSpace objects as needed David Gibson
2013-05-13 21:33 ` Alex Williamson
2013-05-14 1:58 ` David Gibson
2013-05-13 12:23 ` Paolo Bonzini [this message]
2013-05-13 13:13 ` [Qemu-devel] [0/8] RFC: VFIO and guest side IOMMUs, revisited David Gibson
2013-05-13 13:30 ` Paolo Bonzini
2013-05-14 2:39 ` David Gibson
2013-05-14 9:58 ` Paolo Bonzini
2013-05-15 3:55 ` David Gibson
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