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Re: Can legacy vga memory base address be defined different with archite
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From: |
maobibo |
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Subject: |
Re: Can legacy vga memory base address be defined different with architectures |
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Date: |
Tue, 28 Jun 2022 18:06:10 +0800 |
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User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:91.0) Gecko/20100101 Thunderbird/91.9.0 |
在 2022/6/28 16:21, Richard Henderson 写道:
> On 6/28/22 12:12, maobibo wrote:
>> Hi Philippe,
>>
>> In file include/hw/pci/pci.h, the macro QEMU_PCI_VGA_MEM_BASE is
>> defined as 0xa0000, which represents legacy VGA memory base address. I want
>> to know whether it should be the same for all architectures, or does this
>> vga mmio space exist on arm64/riscv physical machines with pci host bridges?
>
> This is x86 only.
I see. On aarch64 virt platform, "virtio-gpu-pci" video card is used rather
than "virtio-vga", there is no such legacy pci vga memory space with
"virtio-gpu-pci" video card. I will check code, and thanks for your
explanation.
regards
bibo, mao
>
>
> r~