Messages in this thread | | | From | Linus Torvalds <> | Date | Sat, 6 Aug 2022 13:31:28 -0700 | Subject | Re: [git pull] IOMMU Updates for Linux v5.20 |
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On Sat, Aug 6, 2022 at 12:39 PM Linus Torvalds <torvalds@linux-foundation.org> wrote: > > If it is, it will be reverted as hopelessly optimistic.
Indeed. I should just have verified with the kernel command line, but I started bisecting when it wasn't entirely obvious what was going on, so I just finished it.
Commit 4bf7fda4dce2 ("iommu/dma: Add config for PCI SAC address trick") is reverted in my tree. You can try again in a decade or so, but at least on x86-64, that config option is basically a "stop modern machines from working", and I don't want to have that even as an option.
If somebody wants some debug output to figure out which device it is that cares, send me a patch, but we're not trying this thing as-is again.
Linus
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