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b=UBmmaPDsoZYHx8Fdql+2DqKX0LL8iTPmo2xcINgKzMPZYqFhYe1kVcCf2fr7a/cAE eQakaes0uMmbRDB+dnnWf9zQlY5cquv6lIIUHuKPvca7GcGQNPap5VVt1eIOo0GNib Jn0EbPaXeXr0KHgO2tsJ6nTe13i8+QOQ/OwuiINY= Date: Mon, 19 May 2025 17:06:07 -0700 From: Andrew Morton To: Kees Cook Cc: Shung-Hsi Yu , Eduard Zingerman , Pawan Gupta , Uladzislau Rezki , Erhard Furtner , Danilo Krummrich , linux-kernel@vger.kernel.org, linux-mm@kvack.org, bpf@vger.kernel.org, linux-hardening@vger.kernel.org Subject: Re: [PATCH 0/2] mm: vmalloc: Actually use the in-place vrealloc region Message-Id: <20250519170607.b8d9c23bb928935d19b333fa@linux-foundation.org> In-Reply-To: <202505191217.B047E005F2@keescook> References: <20250515214020.work.519-kees@kernel.org> <202505191217.B047E005F2@keescook> X-Mailer: Sylpheed 3.8.0beta1 (GTK+ 2.24.33; x86_64-pc-linux-gnu) Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit X-Rspamd-Server: rspam10 X-Stat-Signature: t3dehia3mbra1jmutzxoa6i94n8m4fhd X-Rspamd-Queue-Id: F133814000C X-Rspam-User: X-HE-Tag: 1747699568-141834 X-HE-Meta: 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 v5IT1vxe wrIRz10Ea2oOsRew2tDz/U4HItjZWx9aGI8HmHASsYu79QWp3NlPDt88O5sNWVTj0XUYxXU6+C1xuSyYk7ZTfN6O533wF9GQMYdc7Le3yz3SCcP0jw3JOslbzDRnR6A3TGs/+ay4wquK3Sah1/yZYvbYLVNxsYCzX7lu6bbm7zTFDi4B/5JtEXSlCv/0p5NX3giyftWXXT5pCsRGFgi5V4OyZeCKD6WhMLnlDD8UubgYcNHbEATNwVIcmpCSmzOxAfhdtKs09d9S4Okfr7C7b+d3atQ== X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: On Mon, 19 May 2025 12:18:42 -0700 Kees Cook wrote: > On Thu, May 15, 2025 at 02:42:14PM -0700, Kees Cook wrote: > > 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. No -stable backporting will be needed? > Andrew, can you get these to Linus this week? Sure.