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b=Cw4g126U7B0XrGJyeQlKQ8ZHVa2L0mHMb68E19RjmoPNDE+0Ar8iYOcmEUXe72pgn AHI5/8oSQj8lCkvHP30lo3H3zA3vZO/8rabbPG68K/s4/BsfwK5wz8CulOz/ps8r4g w5p6XMYDOQFWWuMwIK2OqIJx6z1zDJHz/Rmk0f91tQXFZN5EZroIZpin2x9wgt3XOa zHm+8dy82oIXDr4TNVS1ve5jy3HCFVnwbaKnv1R8tkFKytaqINpPgPfU3FwdqczEDw HwUc/Rx+bHgiLRsAjdXz8UlJa5bfMMAnbxzpVv76ygJKBevEKV/ZG02/6plYpxZQBO r/WSxhsw8AldQ== Date: Thu, 12 Mar 2026 17:42:13 +0000 From: "Lorenzo Stoakes (Oracle)" To: stable@vger.kernel.org, Greg Kroah-Hartman , Sasha Levin Cc: linux-mm@kvack.org, Jane Chu , Harry Yoo , Oscar Salvador , Jann Horn , Liu Shixin , Muchun Song , Andrew Morton , Rik van Riel , Laurence Oberman , Lance Yang , Miaohe Lin , "David Hildenbrand (Arm)" Subject: Re: [PATCH 5.15.y 0/6] mm/hugetlb: fixes for PMD table sharing (incl. using mmu_gather) Message-ID: References: <2026012608-tulip-moisten-c6f6@gregkh> <20260218110129.41578-1-david@kernel.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20260218110129.41578-1-david@kernel.org> X-Rspamd-Queue-Id: 225F4180002 X-Stat-Signature: jbf4ppaie9bd135ki1mm7rfnam755ja5 X-Rspam-User: X-Rspamd-Server: rspam06 X-HE-Tag: 1773337336-605511 X-HE-Meta: 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 qTnAUYYB 5vMdtT5A3WK6PGyqKQCzdZbBBSMI+ZnKkJtWWbyAo4B7CUcChZTHB5/mTlUBSwSUuXr59Ve8j2nTXS83lwm/j3Q0lUgTqxI2dnx4k9cYlW3Tf8XzBKr1/fqATRk3zO5OMUQNpxasX5ls1jYhZmzXZVNU7JaQnMg/QOK/JLDU+mOUOsBsW0AcQn+eXRDube9BeYwAU9iPYoeRo0OmKHKqi2GHFYxZTCvHTvE3yoBHUiI28+ja+va43yQiDaeucBAcYUEHALjOX5mqfdmi/zVwvJlCcH6tiVCmY6Xl5lL0VlncqssRxckEXTIYLAu2yFXDGzDyGmxtyrsjrffRscGEVSQrdrirIntSm5k7WtcioEBIO4dh9/CMnhBwahvZkCTCQBcFfcYISYlztUWPUpaJJhk/t4mYhCcAnuBI30DB+4SLXVO2vEdhY+vN5BCYTLgIVzbuyaXp+IU3EJn8Sbr2mZUADQGDBAKanuVSxxOUOmJpL5/73IUWu/qrvxQ== Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: Hi, This series was sent a ~month ago, is anything holding this up? The underlying issue is causing a really serious regression so it's quite urgent to get this pulled ASAP :) Thanks, Lorenzo On Wed, Feb 18, 2026 at 12:01:23PM +0100, David Hildenbrand (Arm) wrote: > Backport of [1] for 5.15. Backport notes are in the individual patches. > > I'm also including a cleanup/fix from Miaohe that makes backporting at > least a bit easier, followed by the fix from Jane. > > Tested on x86-64 with the original reproducer. > > [1] https://lore.kernel.org/linux-mm/20251223214037.580860-1-david@kernel.org/ > > Cc: Jane Chu > Cc: Harry Yoo > Cc: Oscar Salvador > Cc: Jann Horn > Cc: Liu Shixin > Cc: Muchun Song > Cc: Andrew Morton > Cc: Rik van Riel > Cc: Laurence Oberman > Cc: Lance Yang > Cc: Liu Shixin > Cc: Miaohe Lin > > David Hildenbrand (Red Hat) (4): > mm/hugetlb: fix hugetlb_pmd_shared() > mm/hugetlb: fix two comments related to huge_pmd_unshare() > mm/rmap: fix two comments related to huge_pmd_unshare() > mm/hugetlb: fix excessive IPI broadcasts when unsharing PMD tables > using mmu_gather > > Jane Chu (1): > mm/hugetlb: fix copy_hugetlb_page_range() to use ->pt_share_count > > Miaohe Lin (1): > mm/hugetlb: make detecting shared pte more reliable > > include/asm-generic/tlb.h | 77 ++++++++++++++++++++- > include/linux/hugetlb.h | 17 +++-- > include/linux/mm_types.h | 1 + > mm/hugetlb.c | 141 +++++++++++++++++++------------------- > mm/mmu_gather.c | 33 +++++++++ > mm/rmap.c | 38 +++++----- > 6 files changed, 210 insertions(+), 97 deletions(-) > > -- > 2.43.0 >