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Re: [PATCH 1/2] hw/misc/bcm2835_property: Fix framebuffer with recent RP
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From: |
Philippe Mathieu-Daudé |
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Subject: |
Re: [PATCH 1/2] hw/misc/bcm2835_property: Fix framebuffer with recent RPi kernels |
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Date: |
Mon, 18 Oct 2021 12:41:16 +0200 |
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User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:91.0) Gecko/20100101 Thunderbird/91.1.0 |
On 10/18/21 12:27, Benjamin Herrenschmidt wrote:
> On Mon, 2021-10-18 at 11:47 +0200, Philippe Mathieu-Daudé wrote:
>>
>>> I've just checked the rpi-5.15.y branch and it's the same.
>>
>> Indeed. I stopped testing recent kernels because they use too many
>> features QEMU don't implement.
>>
>> Our model should generate the DTB blob of devices implemented, instead
>> of giving false expectations to the guest by passing an unmodified dtb.
>>
>> This is on my TODO, I might give it a try next WE.
>
> Indeed. That said, we do implement the fb, so we probably want that
> fix. The fix for the virtual gpios is probably unnecessary however if
> we do what you want.
>
> That being said, with those two fixes, I can boot the latest 5.10 I get
> from raspbian.
Great. This test should pass with your 5.10 kernel then:
https://lore.kernel.org/qemu-devel/20200215192216.4899-9-f4bug@amsat.org/
Do you mind providing the equivalent 'deb_url' / 'deb_hash' you
used, so I can adapt this test to cover a Raspbian 5.10 kernel
in our CI?