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xen-devel
Re: [Xen-devel] Dom0 hypercall for adding and removing PCI devices
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To: |
"Han, Weidong" <weidong.han@xxxxxxxxx>, <xen-devel@xxxxxxxxxxxxxxxxxxx> |
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Subject: |
Re: [Xen-devel] Dom0 hypercall for adding and removing PCI devices |
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From: |
Keir Fraser <keir.fraser@xxxxxxxxxxxxx> |
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Date: |
Wed, 23 Jul 2008 10:28:05 +0100 |
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Cc: |
joshua.levasseur@xxxxxxxxxxxxx, "Li, Xin B" <xin.b.li@xxxxxxxxx>, "Jiang, Yunhong" <yunhong.jiang@xxxxxxxxx>, espen.skoglund@xxxxxxxxxxxxx |
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Wed, 23 Jul 2008 02:28:34 -0700 |
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[Xen-devel] Dom0 hypercall for adding and removing PCI devices |
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On 23/7/08 10:26, "Han, Weidong" <weidong.han@xxxxxxxxx> wrote:
>> So this would be one extra VT-d pagetable, for the whole system,
>> which would be the fallback location for RMRR mappings for devices
>> which are currently not assigned to any domain? Thus allowing
>> firmware to successfully initiate DMA operations on those devices?
>> Sounds sensible.
>>
>
> Is it possible that idle_domain owns the RMRR VT-d page table?
If that's a convenient place to stash it then why not? Either way, seems
you're going to have it special-cased in the code as fallback owner for
unassigned devices. It's possible that having it stashed in the idle domain
will simply make the code more confusing. I'm not sure though.
-- Keir
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- [Xen-devel] Dom0 hypercall for adding and removing PCI devices, Han, Weidong
- Re: [Xen-devel] Dom0 hypercall for adding and removing PCI devices, Keir Fraser
- RE: [Xen-devel] Dom0 hypercall for adding and removing PCI devices, Han, Weidong
- Re: [Xen-devel] Dom0 hypercall for adding and removing PCI devices,
Keir Fraser <=
- Re: [Xen-devel] Dom0 hypercall for adding and removing PCI devices, Espen Skoglund
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- RE: [Xen-devel] Dom0 hypercall for adding and removing PCI devices, Han, Weidong
- Re: [Xen-devel] Dom0 hypercall for adding and removing PCI devices, Keir Fraser
- RE: [Xen-devel] Dom0 hypercall for adding and removing PCI devices, Han, Weidong
- Re: [Xen-devel] Dom0 hypercall for adding and removing PCI devices, Keir Fraser
- RE: [Xen-devel] Dom0 hypercall for adding and removing PCI devices, Tian, Kevin
- Re: [Xen-devel] Dom0 hypercall for adding and removing PCI devices, Keir Fraser
- RE: [Xen-devel] Dom0 hypercall for adding and removing PCI devices, Han, Weidong
- Re: [Xen-devel] Dom0 hypercall for adding and removing PCI devices, Keir Fraser
- RE: [Xen-devel] Dom0 hypercall for adding and removing PCI devices, Espen Skoglund
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