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Re: [Qemu-devel] [PATCH V3] hw/pci-host: Fix x86 Host Bridges 64bit PCI
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From: |
Gerd Hoffmann |
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Subject: |
Re: [Qemu-devel] [PATCH V3] hw/pci-host: Fix x86 Host Bridges 64bit PCI hole |
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Date: |
Thu, 9 Nov 2017 07:28:21 +0100 |
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User-agent: |
NeoMutt/20171027 |
On Wed, Nov 08, 2017 at 04:48:09PM +0200, Marcel Apfelbaum wrote:
> Currently there is no MMIO range over 4G
> reserved for PCI hotplug. Since the 32bit PCI hole
> depends on the number of cold-plugged PCI devices
> and other factors, it is very possible is too small
> to hotplug PCI devices with large BARs.
>
> Fix it by reserving 2G for I4400FX chipset
> in order to comply with older Win32 Guest OSes
> and 32G for Q35 chipset.
>
> Note this is a regression since prev QEMU versions had
> some range reserved for 64bit PCI hotplug.
Reviewed-by: Gerd Hoffmann <address@hidden>