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Re: [PATCH v4 0/5] Support virtio-gpu DRM native context
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From: |
Dmitry Osipenko |
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Subject: |
Re: [PATCH v4 0/5] Support virtio-gpu DRM native context |
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Date: |
Sun, 12 Jan 2025 19:46:56 +0300 |
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User-agent: |
Mozilla Thunderbird |
On 1/12/25 19:14, Alex Bennée wrote:
> So this goes away with:
>
> Linux draig 6.13.0-rc6-ajb-00144-g8c8d54116fa2-dirty #27 SMP
> PREEMPT_DYNAMIC Fri Jan 10 16:57:29 GMT 2025 x86_64 GNU/Linux
>
> So I think is an artefact of the PFN page locking failing. I guess
> native context is more prone to issues? It is a bit odd as I have loads
> of memory and I think the intel graphics are unified memory but I don't
> know how you would check.
Native context is about same prone as Venus. For Intel GFX it doesn't
matter much whether it's dGPU or iGPU. i915 driver would use huge pages
for UMA which is affected by the same KVM/PFN issue. In a case of UMA,
you may explicitly disable transparent huge pages to work around the
problem, but this is no necessary anymore using 6.13+ kernel. Glad it
was an easy fix!
--
Best regards,
Dmitry