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

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On Wed, Dec 07, 2022 at 11:34:57AM +0800, Guo Ren wrote:
> On Wed, Dec 7, 2022 at 7:05 AM Conor Dooley <conor@xxxxxxxxxx> wrote:
> >
> > 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@xxxxxxxxxx/
> > > >
> > > > 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@xxxxxxxxx/
> >
> > 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?
> The problem does not belong to the patch.
> 
> Could I send a fixup patch? like this?

That seems like a sane dependancy, but did you build that config?
This doesn't fix the problem for me :/

> 
> diff --git a/arch/riscv/Kconfig b/arch/riscv/Kconfig
> index ef8d66de5f38..d8c07999426c 100644
> --- a/arch/riscv/Kconfig
> +++ b/arch/riscv/Kconfig
> @@ -512,6 +512,7 @@ config ARCH_HAS_KEXEC_PURGATORY
> 
>  config CRASH_DUMP
>         bool "Build kdump crash kernel"
> +       depends on KEXEC
>         help
>           Generate crash dump after being started by kexec. This should
>           be normally only set in special crash dump kernels which are
> 
> >
> > Thanks,
> > Conor.
> >
> 
> 
> -- 
> Best Regards
>  Guo Ren

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