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Re: [Qemu-devel] [PATCH 00/39] Memory API, batch 2: PCI devices
From: |
Richard Henderson |
Subject: |
Re: [Qemu-devel] [PATCH 00/39] Memory API, batch 2: PCI devices |
Date: |
Mon, 01 Aug 2011 10:32:47 -0700 |
User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:5.0) Gecko/20110707 Thunderbird/5.0 |
On 07/31/2011 10:57 AM, Avi Kivity wrote:
> This is a mostly mindless conversion of all QEMU PCI devices to the memory
> API.
> After this patchset is applied, it is no longer possible to create a PCI
> device
> using the old API.
>
> An immediate benefit is that PCI BARs that overlap each other are now handled
> correctly: currently, the sequence
>
> map BAR 0
> map BAR 1 at an overlapping address
> unmap either BAR 0 or BAR 1
>
> will leave a hole where the overlap exists. With the patchset, the memory map
> is restored correctly.
>
> Note that overlaps of PCI BARs with memory or non-PCI resources are still not
> resolved correctly; this will be fixed later on.
>
> The vga patches have ugly intermediate states; however the result is fairly
> clean.
>
> Also available from:
>
> git://git.kernel.org/pub/scm/virt/kvm/qemu-kvm.git memory-region-b2
1-39
Reviewed-by: Richard Henderson <address@hidden>
Nice cleanups.
r~
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