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From: Kees Cook <kees@kernel.org>
To: Andrew Morton <akpm@linux-foundation.org>
Cc: Kees Cook <kees@kernel.org>, Shung-Hsi Yu <shung-hsi.yu@suse.com>,
	Eduard Zingerman <eddyz87@gmail.com>,
	Pawan Gupta <pawan.kumar.gupta@linux.intel.com>,
	Uladzislau Rezki <urezki@gmail.com>,
	Erhard Furtner <erhard_f@mailbox.org>,
	Danilo Krummrich <dakr@kernel.org>,
	linux-kernel@vger.kernel.org, linux-mm@kvack.org,
	bpf@vger.kernel.org, linux-hardening@vger.kernel.org
Subject: [PATCH 0/2] mm: vmalloc: Actually use the in-place vrealloc region
Date: Thu, 15 May 2025 14:42:14 -0700	[thread overview]
Message-ID: <20250515214020.work.519-kees@kernel.org> (raw)

Hi,

This fixes a performance regression[1] with vrealloc(). This needs to
get into v6.15, which is where the regression originates, and then it'll
get backport to the -stable releases as well.

Thanks!

-Kees

[1] https://lore.kernel.org/lkml/20250515-bpf-verifier-slowdown-vwo2meju4cgp2su5ckj@6gi6ssxbnfqg/

Kees Cook (2):
  mm: vmalloc: Actually use the in-place vrealloc region
  mm: vmalloc: Only zero-init on vrealloc shrink

 mm/vmalloc.c | 13 ++++++++-----
 1 file changed, 8 insertions(+), 5 deletions(-)

-- 
2.34.1


             reply	other threads:[~2025-05-15 21:42 UTC|newest]

Thread overview: 9+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2025-05-15 21:42 Kees Cook [this message]
2025-05-15 21:42 ` [PATCH 1/2] mm: vmalloc: Actually use the in-place vrealloc region Kees Cook
2025-05-15 21:42 ` [PATCH 2/2] mm: vmalloc: Only zero-init on vrealloc shrink Kees Cook
2025-05-16  6:02 ` [PATCH 0/2] mm: vmalloc: Actually use the in-place vrealloc region Shung-Hsi Yu
2025-05-16  6:32 ` Uladzislau Rezki
2025-05-16  8:28 ` Danilo Krummrich
2025-05-19 19:18 ` Kees Cook
2025-05-20  0:06   ` Andrew Morton
2025-05-20 16:06     ` Kees Cook

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