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From: Karl Mehltretter <kmehltretter@gmail.com>
To: Muchun Song <muchun.song@linux.dev>
Cc: Russell King <linux@armlinux.org.uk>,
	 linux-arm-kernel@lists.infradead.org,
	Oscar Salvador <osalvador@suse.de>,
	 Andrew Morton <akpm@linux-foundation.org>,
	David Hildenbrand <david@kernel.org>,
	linux-mm@kvack.org,  linux-kernel@vger.kernel.org
Subject: Re: [PATCH] ARM: mm: align hugetlb mappings to the huge page size
Date: Sat, 26 Sep 2026 18:19:54 +0200	[thread overview]
Message-ID: <arfwK6XInu-S9COc@gmail.com> (raw)
In-Reply-To: <5AB6FE85-4CB9-41EF-A700-BC5E071F29F5@linux.dev>

On Thu, Sep 24, 2026 at 04:41:30PM +0100, Muchun Song wrote:
> > Fixes: 7bd3f1e1a9ae ("mm: make hugetlb mappings go through mm_get_unmapped_area_vmflags")
> > Cc: stable@vger.kernel.org
> > Assisted-by: LLM
> > Signed-off-by: Karl Mehltretter <kmehltretter@gmail.com>
> 
> Besides 32-bit Arm, the same regression appears to affect MIPS and
> SuperH: both support HugeTLB and provide custom arch_get_unmapped_area*()
> implementations that only enforce cache-colouring alignment, not the
> hstate’s huge-page alignment.
> 
> Acked-by: Muchun Song <muchun.song@linux.dev>

Hi Muchun,

Thanks for the ack. I've now submitted the patch to Russell's
patch tracker:

https://www.armlinux.org.uk/developer/patches/viewpatch.php?id=9524/1

I'll also take a look at the MIPS and SuperH cases you mentioned.

Karl

      reply	other threads:[~2026-09-26 16:19 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-09-01  8:57 Karl Mehltretter
2026-09-24  6:23 ` Karl Mehltretter
2026-09-24  8:41 ` Muchun Song
2026-09-26 16:19   ` Karl Mehltretter [this message]

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