linux-kernel - Re: [PATCH v7 11/70] arch/arm64: Remove the merge workaround for VMA

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Date:   Tue, 5 Apr 2022 10:24:57 +0100
From:   Will Deacon <will@...nel.org>
To:     Liam Howlett <liam.howlett@...cle.com>
Cc:     "maple-tree@...ts.infradead.org" <maple-tree@...ts.infradead.org>,
        "linux-mm@...ck.org" <linux-mm@...ck.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        Andrew Morton <akpm@...ux-foundation.org>
Subject: Re: [PATCH v7 11/70] arch/arm64: Remove the merge workaround for
 VMA_ITERATOR

Hi Liam,

On Mon, Apr 04, 2022 at 02:35:36PM +0000, Liam Howlett wrote:
> Now that the vma iterator is in the kernel, remove the workaround.
> 
> Signed-off-by: Liam R. Howlett <Liam.Howlett@...cle.com>
> ---
>  arch/arm64/kernel/elfcore.c | 7 -------
>  1 file changed, 7 deletions(-)
> 
> diff --git a/arch/arm64/kernel/elfcore.c b/arch/arm64/kernel/elfcore.c
> index 3ed39c61a510..930a0bc4cac4 100644
> --- a/arch/arm64/kernel/elfcore.c
> +++ b/arch/arm64/kernel/elfcore.c
> @@ -8,13 +8,6 @@
>  #include <asm/cpufeature.h>
>  #include <asm/mte.h>
>  
> -#ifndef VMA_ITERATOR
> -#define VMA_ITERATOR(name, mm, addr)	\
> -	struct mm_struct *name = mm
> -#define for_each_vma(vmi, vma)		\
> -	for (vma = vmi->mmap; vma; vma = vma->vm_next)
> -#endif

I already have this revert queued up as an arm64 fix:

https://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git/commit/?h=for-next/fixes&id=a0ab7e5bc9651d65637f50ee9c09e083919677ed

Should land for -rc2.

Will