From: "David Hildenbrand (Red Hat)" <david@kernel.org>
To: Harry Yoo <harry.yoo@oracle.com>
Cc: linux-kernel@vger.kernel.org, linux-arch@vger.kernel.org,
linux-mm@kvack.org, Will Deacon <will@kernel.org>,
"Aneesh Kumar K.V" <aneesh.kumar@kernel.org>,
Andrew Morton <akpm@linux-foundation.org>,
Nick Piggin <npiggin@gmail.com>,
Peter Zijlstra <peterz@infradead.org>,
Arnd Bergmann <arnd@arndb.de>,
Muchun Song <muchun.song@linux.dev>,
Oscar Salvador <osalvador@suse.de>,
"Liam R. Howlett" <Liam.Howlett@oracle.com>,
Lorenzo Stoakes <lorenzo.stoakes@oracle.com>,
Vlastimil Babka <vbabka@suse.cz>, Jann Horn <jannh@google.com>,
Pedro Falcato <pfalcato@suse.de>, Rik van Riel <riel@surriel.com>,
Laurence Oberman <loberman@redhat.com>,
Prakash Sangappa <prakash.sangappa@oracle.com>,
Nadav Amit <nadav.amit@gmail.com>,
stable@vger.kernel.org
Subject: Re: [PATCH RESEND v3 4/4] mm/hugetlb: fix excessive IPI broadcasts when unsharing PMD tables using mmu_gather
Date: Tue, 30 Dec 2025 23:00:55 +0100 [thread overview]
Message-ID: <bb3e8b8f-4af4-4e12-83b2-fed6e20edd64@kernel.org> (raw)
In-Reply-To: <aVHnxxOAGu26a5Cr@hyeyoo>
>>
>> Fixes: 1013af4f585f ("mm/hugetlb: fix huge_pmd_unshare() vs GUP-fast race")
>> Reported-by: Uschakow, Stanislav" <suschako@amazon.de>
>> Closes: https://lore.kernel.org/all/4d3878531c76479d9f8ca9789dc6485d@amazon.de/
>> Tested-by: Laurence Oberman <loberman@redhat.com>
>> Cc: <stable@vger.kernel.org>
>> Signed-off-by: David Hildenbrand (Red Hat) <david@kernel.org>
>> ---
>
> Looks correct and nothing jumped out at me during review, so:
> Acked-by: Harry Yoo <harry.yoo@oracle.com>
>
Thanks Harry! And thanks again for making me look again at the hugetlb
mmu_gather horrors :)
--
Cheers
David
next prev parent reply other threads:[~2025-12-30 22:01 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-12-23 21:40 [PATCH RESEND v3 0/4] mm/hugetlb: fixes for PMD table sharing (incl. using mmu_gather) David Hildenbrand (Red Hat)
2025-12-23 21:40 ` [PATCH RESEND v3 1/4] mm/hugetlb: fix hugetlb_pmd_shared() David Hildenbrand (Red Hat)
2025-12-23 21:40 ` [PATCH RESEND v3 2/4] mm/hugetlb: fix two comments related to huge_pmd_unshare() David Hildenbrand (Red Hat)
2025-12-23 21:40 ` [PATCH RESEND v3 3/4] mm/rmap: " David Hildenbrand (Red Hat)
2025-12-23 21:40 ` [PATCH RESEND v3 4/4] mm/hugetlb: fix excessive IPI broadcasts when unsharing PMD tables using mmu_gather David Hildenbrand (Red Hat)
2025-12-25 9:47 ` David Hildenbrand (Red Hat)
2025-12-29 2:30 ` Harry Yoo
2025-12-30 22:00 ` David Hildenbrand (Red Hat) [this message]
2026-01-06 19:26 ` Lorenzo Stoakes
2025-12-23 23:23 ` [PATCH RESEND v3 0/4] mm/hugetlb: fixes for PMD table sharing (incl. using mmu_gather) Laurence Oberman
2025-12-25 9:49 ` David Hildenbrand (Red Hat)
2026-01-15 17:22 ` Lorenzo Stoakes
2026-01-15 18:05 ` Andrew Morton
2026-01-15 19:40 ` David Hildenbrand (Red Hat)
2026-01-15 20:53 ` Andrew Morton
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