linux-kernel - Re: [PATCH V5 0/2] Support VMCOREINFO export for RISCV64

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Date:   Tue, 6 Dec 2022 23:05:06 +0000
From:   Conor Dooley <conor@...nel.org>
To:     Palmer Dabbelt <palmer@...osinc.com>,
        Xianting Tian <xianting.tian@...ux.alibaba.com>
Cc:     mick@....forth.gr, corbet@....net, alexandre.ghiti@...onical.com,
        vgoyal@...hat.com, bhe@...hat.com,
        Paul Walmsley <paul.walmsley@...ive.com>,
        Conor Dooley <conor.dooley@...rochip.com>,
        bagasdotme@...il.com, dyoung@...hat.com,
        Palmer Dabbelt <palmer@...belt.com>, heiko@...ech.de,
        Xianting Tian <xianting.tian@...ux.alibaba.com>,
        guoren@...nel.org, anup@...infault.org, aou@...s.berkeley.edu,
        hschauhan@...ltrace.org, yixun.lan@...il.com,
        kexec@...ts.infradead.org, heinrich.schuchardt@...onical.com,
        linux-doc@...r.kernel.org, crash-utility@...hat.com,
        linux-kernel@...r.kernel.org, k-hagio-ab@....com,
        linux-riscv@...ts.infradead.org
Subject: Re: [PATCH V5 0/2] Support VMCOREINFO export for RISCV64

Hey Palmer, Xianting,

On Fri, Dec 02, 2022 at 04:49:39PM -0800, Palmer Dabbelt wrote:
> On Wed, 26 Oct 2022 22:42:06 +0800, Xianting Tian wrote:
> > As disscussed in below patch set, the patch of 'describe VMCOREINFO export in Documentation'
> > need to update according to Bagas's comments.
> > https://lore.kernel.org/linux-riscv/22AAF52E-8CC8-4D11-99CB-88DE4D113444@kernel.org/
> > 
> > As others patches in above patch set already applied, so this patch set only contains below two
> > patches.
> > 
> > [...]
> 
> Applied, thanks!
> 
> [1/2] RISC-V: Add arch_crash_save_vmcoreinfo support
>       https://git.kernel.org/palmer/c/649d6b1019a2

So this patch seems to be causing issues for the nommu build:
https://lore.kernel.org/oe-kbuild-all/202212062250.tR0otHcz-lkp@intel.com/

I had a bit of a poke at trying to see if there were some headers we
could pull in before actually checking the .config only to see:
# CONFIG_MMU is not set

Do we have to wrap the whole thing in a `#ifdef CONFIG_MMU` to fix
compilation here?

Thanks,
Conor.


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