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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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