On Tue, Jul 4, 2023 at 2:33 AM Linus Torvalds
<torvalds@xxxxxxxxxxxxxxxxxxxx> wrote:
>
> On Mon, 3 Jul 2023 at 19:23, Stephen Rothwell <sfr@xxxxxxxxxxxxxxxx> wrote:
> >
> > After merging the origin tree, today's linux-next build (arm64 defconfig)
> > failed like this:
> >
> > arch/arm64/mm/fault.c: In function 'do_page_fault':
>
> Yup, SeongJae Park sent me the same report, and it just made it to
> top-of-tree as commit 24be4d0b46bb ("arch/arm64/mm/fault: Fix
> undeclared variable error in do_page_fault()")
Thanks for fixing that! I hope to turn CONFIG_PER_VMA_LOCK back on soon.
>
> This was actually an architecture I test myself, but I think UP ends
> up turning off CONFIG_PER_VMA_LOCK.
Yes, CONFIG_PER_VMA_LOCK depends on SMP.
>
> I do wonder how much point there is to have a non-SMP build of
> architectures like x86-64 and arm64 at all...
>
> But I guess people still run them in qemu.
>
> Linus
