linux-kernel - Re: linux-next: build failure after merge of the mm tree

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Date:   Mon, 3 Jul 2023 19:32:46 -0700
From:   Linus Torvalds <torvalds@...ux-foundation.org>
To:     Stephen Rothwell <sfr@...b.auug.org.au>
Cc:     Andrew Morton <akpm@...ux-foundation.org>,
        Suren Baghdasaryan <surenb@...gle.com>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Linux Next Mailing List <linux-next@...r.kernel.org>
Subject: Re: linux-next: build failure after merge of the mm tree

On Mon, 3 Jul 2023 at 19:23, Stephen Rothwell <sfr@...b.auug.org.au> 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()")

This was actually an architecture I test myself, but I think UP ends
up turning off CONFIG_PER_VMA_LOCK.

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