Re: [PATCH] drm/ttm: provide default page protection for UML
From: Johannes Berg <johannes@sipsolutions.net>
Date: 2021-09-02 08:12:23
Also in:
dri-devel, lkml
On Thu, 2021-09-02 at 09:10 +0100, Anton Ivanov wrote:
On 02/09/2021 08:43, Johannes Berg wrote:quoted
On Thu, 2021-09-02 at 07:19 +0100, Anton Ivanov wrote:quoted
quoted
quoted
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.txtGood 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".
Yeah I sent like a handful of similar patches ... I'll send that patch out in a minute, just writing a reasonable commit log. Seems to build & work fine for me. johannes _______________________________________________ linux-um mailing list linux-um@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-um