Messages in this thread | | | Subject | Re: [PATCH] drm/ttm: provide default page protection for UML | From | Anton Ivanov <> | Date | Thu, 2 Sep 2021 09:10:54 +0100 |
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On 02/09/2021 08:43, Johannes Berg wrote: > On Thu, 2021-09-02 at 07:19 +0100, Anton Ivanov wrote: >>>> >>>> I have a question though - why all of DRM is not !UML in config. Not >>>> like we can use them. >>> >>> I have no idea about that. >>> Hopefully one of the (other) UML maintainers can answer you. >> >> Touche. >> >> We will discuss that and possibly push a patch to !UML that part of the >> tree. IMHO it is not applicable. > > As I just said on the other patch, all of this is fallout from my commit > 68f5d3f3b654 ("um: add PCI over virtio emulation driver") which is the > first time that you could have PCI on UML. > > Without having checked, in this particular case it's probably something > like > > depends on PCI && X86_64 > > as we've seen in other drivers (idxd, ioat). > > The biggest problem is probably that UML internally uses X86_64 > (arch/x86/um/Kconfig), which is ... unexpected ... since CONFIG_X86_64 > is typically considered the ARCH, and now the ARCH is actually um. > > I think we can just fix that and get rid of this entire class of > problems? Something like > > https://p.sipsolutions.net/fbac19d86637e286.txt
Good idea. I suspect that DRM will not be the only thing to pop up out of this so we might as well fix it "at the top".
A
> > johannes > > > > _______________________________________________ > linux-um mailing list > linux-um@lists.infradead.org > http://lists.infradead.org/mailman/listinfo/linux-um >
-- Anton R. Ivanov Cambridgegreys Limited. Registered in England. Company Number 10273661 https://www.cambridgegreys.com/
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