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Re: [RFC][PATCH] docs: note exception for PCIe IO port access
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From: |
Laszlo Ersek |
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Subject: |
Re: [RFC][PATCH] docs: note exception for PCIe IO port access |
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Date: |
Thu, 9 Jun 2022 09:50:21 +0200 |
On 06/09/22 09:45, Laszlo Ersek wrote:
> +Alex
>
> On 06/09/22 04:00, Kevin Locke wrote:
> *In theory*, scenario (b) applies to "bochs-display" and
> "virtio-gpu-pci" when you plug them into a legacy PCI slot:
>
>> Plugging a PCI Express device into a PCI slot will hide the Extended
>> Configuration Space thus is also not recommended.
>
> But this is fine, as these device models don't have extended
> capabilities in practice. IOW, I'd imagine them (if they were physical
> cards) as PCI Express devices without any use for their extended config
> spaces. You could plug them into legacy PCI slots, but would see no
> difference in behavior (apart from speed perhaps).
Ignore the part starting with "IOW", that seems like brain fart on my
part, apologies! :/