From: Avi Kivity <avi@redhat.com>
To: Paolo Bonzini <pbonzini@redhat.com>
Cc: "Michael S. Tsirkin" <mst@redhat.com>,
liu ping fan <qemulist@gmail.com>,
qemu-devel@nongnu.org, Blue Swirl <blauwirbel@gmail.com>,
Alex Williamson <alex.williamson@redhat.com>,
Anthony Liguori <anthony@codemonkey.ws>,
David Gibson <david@gibson.dropbear.id.au>
Subject: Re: [Qemu-devel] [RFC v1 3/7] memory: iommu support
Date: Thu, 11 Oct 2012 15:57:01 +0200 [thread overview]
Message-ID: <5076D02D.2070107@redhat.com> (raw)
In-Reply-To: <5076CF7B.3030101@redhat.com>
On 10/11/2012 03:54 PM, Paolo Bonzini wrote:
> Il 11/10/2012 15:45, Avi Kivity ha scritto:
>>>> >> +struct MemoryRegionIOMMUOps {
>>>> >> + /* Returns a TLB entry that contains a given address. */
>>>> >> + IOMMUTLBEntry (*translate)(MemoryRegion *iommu, target_phys_addr_t addr,
>>>> >> + bool is_write);
>>>> >> +};
>>> >
>>> > Do map/unmap still make sense in this model? Ben & David, what were
>>> > your plans there?
>>> >
>> Map/unmap is supported via address_space_map(), which calls
>> ->translate(). I don't see how a lower-level map/unmap helps, unless
>> the hardware supplies such a function.
>
> Yep, it's just the map/unmap callbacks that are not supported anymore,
> but nobody uses that feature of DMAContext yet.
What do those callbacks it even mean?
--
error compiling committee.c: too many arguments to function
next prev parent reply other threads:[~2012-10-11 13:57 UTC|newest]
Thread overview: 41+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-10-11 13:26 [Qemu-devel] [RFC v1 0/7] IOMMU support Avi Kivity
2012-10-11 13:26 ` [Qemu-devel] [RFC v1 1/7] memory: fix address space initialization/destruction Avi Kivity
2012-10-11 13:31 ` Paolo Bonzini
2012-10-11 13:33 ` Avi Kivity
2012-10-13 9:14 ` Blue Swirl
2012-10-11 13:26 ` [Qemu-devel] [RFC v1 2/7] memory: limit sections in the radix tree to the actual address space size Avi Kivity
2012-10-11 13:26 ` [Qemu-devel] [RFC v1 3/7] memory: iommu support Avi Kivity
2012-10-11 13:42 ` Paolo Bonzini
2012-10-11 13:45 ` Avi Kivity
2012-10-11 13:54 ` Paolo Bonzini
2012-10-11 13:57 ` Avi Kivity [this message]
2012-10-12 2:51 ` Benjamin Herrenschmidt
2012-10-15 16:54 ` Avi Kivity
2012-10-12 2:45 ` Benjamin Herrenschmidt
2012-10-13 9:30 ` Blue Swirl
2012-10-13 11:37 ` Benjamin Herrenschmidt
2012-10-11 14:29 ` Avi Kivity
2012-10-11 13:27 ` [Qemu-devel] [RFC v1 4/7] pci: switch iommu to using the memory API Avi Kivity
2012-10-11 13:53 ` Paolo Bonzini
2012-10-11 13:56 ` Avi Kivity
2012-10-13 9:13 ` Blue Swirl
2012-10-15 10:31 ` Avi Kivity
2012-10-11 13:27 ` [Qemu-devel] [RFC v1 5/7] i440fx: add an iommu Avi Kivity
2012-10-11 13:27 ` [Qemu-devel] [RFC v1 6/7] vfio: abort if an emulated iommu is used Avi Kivity
2012-10-11 13:27 ` [Qemu-devel] [RFC v1 7/7] vhost: " Avi Kivity
2012-10-11 13:31 ` Michael S. Tsirkin
2012-10-11 13:34 ` Avi Kivity
2012-10-11 13:44 ` Michael S. Tsirkin
2012-10-11 13:44 ` Avi Kivity
2012-10-11 14:35 ` Michael S. Tsirkin
2012-10-11 14:35 ` Avi Kivity
2012-10-11 15:34 ` Michael S. Tsirkin
2012-10-11 15:48 ` Avi Kivity
2012-10-11 19:38 ` Alex Williamson
2012-10-15 10:24 ` Avi Kivity
2012-10-15 8:44 ` liu ping fan
2012-10-15 10:32 ` Avi Kivity
2012-10-12 2:36 ` [Qemu-devel] [RFC v1 0/7] IOMMU support Benjamin Herrenschmidt
2012-10-15 10:45 ` Avi Kivity
2012-10-15 19:52 ` Benjamin Herrenschmidt
2012-10-16 9:30 ` Avi Kivity
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