From: Jason Wang <jasowang@redhat.com>
To: Peter Xu <peterx@redhat.com>, "Tian, Kevin" <kevin.tian@intel.com>
Cc: Jintack Lim <jintack@cs.columbia.edu>,
Alex Williamson <alex.williamson@redhat.com>,
"qemu-devel@nongnu.org" <qemu-devel@nongnu.org>,
"Michael S . Tsirkin" <mst@redhat.com>
Subject: Re: [Qemu-devel] [PATCH 08/10] intel-iommu: maintain per-device iova ranges
Date: Thu, 3 May 2018 15:20:11 +0800 [thread overview]
Message-ID: <547a97a1-0ac0-21b2-af00-036b795b06cc@redhat.com> (raw)
In-Reply-To: <20180503060442.GB2378@xz-mi>
On 2018年05月03日 14:04, Peter Xu wrote:
> IMHO the guest can't really detect this, but it'll found that the
> device is not working functionally if it's doing something like what
> Jason has mentioned.
>
> Actually now I have had an idea if we really want to live well even
> with Jason's example: maybe we'll need to identify PSI/DSI. For DSI,
> we don't remap for mapped pages; for PSI, we unmap and remap the
> mapped pages. That'll complicate the stuff a bit, but it should
> satisfy all the people.
>
> Thanks,
So it looks like there will be still unnecessary unamps. How about
record the mappings in the tree too?
Thanks
next prev parent reply other threads:[~2018-05-03 7:20 UTC|newest]
Thread overview: 52+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-04-25 4:51 [Qemu-devel] [PATCH 00/10] intel-iommu: nested vIOMMU, cleanups, bug fixes Peter Xu
2018-04-25 4:51 ` [Qemu-devel] [PATCH 01/10] intel-iommu: send PSI always even if across PDEs Peter Xu
2018-04-25 4:51 ` [Qemu-devel] [PATCH 02/10] intel-iommu: remove IntelIOMMUNotifierNode Peter Xu
2018-04-25 4:51 ` [Qemu-devel] [PATCH 03/10] intel-iommu: add iommu lock Peter Xu
2018-04-25 16:26 ` Emilio G. Cota
2018-04-26 5:45 ` Peter Xu
2018-04-27 5:13 ` Jason Wang
2018-04-27 6:26 ` Peter Xu
2018-04-27 7:19 ` Tian, Kevin
2018-04-27 9:53 ` Peter Xu
2018-04-28 1:54 ` Tian, Kevin
2018-04-28 1:43 ` Jason Wang
2018-04-28 2:24 ` Peter Xu
2018-04-28 2:42 ` Jason Wang
2018-04-28 3:06 ` Peter Xu
2018-04-28 3:11 ` Jason Wang
2018-04-28 3:14 ` Peter Xu
2018-04-28 3:16 ` Jason Wang
2018-04-30 7:22 ` Paolo Bonzini
2018-04-30 7:20 ` Paolo Bonzini
2018-05-03 5:39 ` Peter Xu
2018-04-25 4:51 ` [Qemu-devel] [PATCH 04/10] intel-iommu: only do page walk for MAP notifiers Peter Xu
2018-04-25 4:51 ` [Qemu-devel] [PATCH 05/10] intel-iommu: introduce vtd_page_walk_info Peter Xu
2018-04-25 4:51 ` [Qemu-devel] [PATCH 06/10] intel-iommu: pass in address space when page walk Peter Xu
2018-04-25 4:51 ` [Qemu-devel] [PATCH 07/10] util: implement simple interval tree logic Peter Xu
2018-04-27 5:53 ` Jason Wang
2018-04-27 6:27 ` Peter Xu
2018-05-03 7:10 ` Peter Xu
2018-05-03 7:21 ` Jason Wang
2018-05-03 7:30 ` Peter Xu
2018-04-25 4:51 ` [Qemu-devel] [PATCH 08/10] intel-iommu: maintain per-device iova ranges Peter Xu
2018-04-27 6:07 ` Jason Wang
2018-04-27 6:34 ` Peter Xu
2018-04-27 7:02 ` Tian, Kevin
2018-04-27 7:28 ` Peter Xu
2018-04-27 7:44 ` Tian, Kevin
2018-04-27 9:55 ` Peter Xu
2018-04-27 11:40 ` Peter Xu
2018-04-27 23:37 ` Tian, Kevin
2018-05-03 6:04 ` Peter Xu
2018-05-03 7:20 ` Jason Wang [this message]
2018-05-03 7:28 ` Peter Xu
2018-05-03 7:43 ` Jason Wang
2018-05-03 7:53 ` Peter Xu
2018-05-03 9:22 ` Jason Wang
2018-05-03 9:53 ` Peter Xu
2018-05-03 12:01 ` Peter Xu
2018-04-28 1:49 ` Jason Wang
2018-04-25 4:51 ` [Qemu-devel] [PATCH 09/10] intel-iommu: don't unmap all for shadow page table Peter Xu
2018-04-25 4:51 ` [Qemu-devel] [PATCH 10/10] intel-iommu: remove notify_unmap for page walk Peter Xu
2018-04-25 5:05 ` [Qemu-devel] [PATCH 00/10] intel-iommu: nested vIOMMU, cleanups, bug fixes no-reply
2018-04-25 5:34 ` Peter Xu
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