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b=kHXRzKknA3A9aDX+Xz4lbLB90q+PBv33eJfoQmsaLhGOv1tahF6UtQxvL4LPgamsz t5rltBbjHiXOXBaIQ8GXVHEFuNa4IUu6hHP55+CClRyl9Jw9qBab7s+lj2ZLSzSwE0 2nVOz1InhfwHxtwZShWt9xa36LxkWLfKVBmhuogVea0VBtzaEoSCScVdh9pM8AOqlz YDAPPY3zBoEUwLTXr7Vzl0RDcIzG0jf3tcO8mz+pWJ8x4ZFRN5eEfZk2Meog34jjTm 0hgRJoKPS0hhuNJDPgtvie5eQX1nGMYKMFqk0ZG0V091QLWQPTYjmQDB9nrEPj3vx8 U8HP7CeoJb1NA== From: Pratyush Yadav To: Mike Rapoport Cc: Andrew Morton , Alexander Graf , Baoquan He , Changyuan Lyu , Chris Li , Jason Gunthorpe , Pasha Tatashin , Pratyush Yadav , kexec@lists.infradead.org, linux-mm@kvack.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH v5 3/4] kho: add support for preserving vmalloc allocations In-Reply-To: <20250921054458.4043761-4-rppt@kernel.org> References: <20250921054458.4043761-1-rppt@kernel.org> <20250921054458.4043761-4-rppt@kernel.org> Date: Mon, 22 Sep 2025 15:50:46 +0200 Message-ID: User-Agent: Gnus/5.13 (Gnus v5.13) MIME-Version: 1.0 Content-Type: text/plain X-Stat-Signature: c6h4uzhtkmggdeemfinf8cdx11hf5on4 X-Rspamd-Queue-Id: D7B3B2000B X-Rspam-User: X-Rspamd-Server: rspam03 X-HE-Tag: 1758549050-289451 X-HE-Meta: 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 GmO7bw1g nzWjXWFuSSzhhsfb3t2vM3dIRVItPLiKtBfgv0qwz+RSUbjJGhDN2AZqiNDdKZOj2W4thOW9uxqzZLAmkZs68FRAdW2kHmS5iy9Sn+8EjE4+Wv2Yu7pqYVyrZkk9t355wWpXAFTx5JNI+KuJoq54lZAbOZoJbZBJobHMso7shSHbnqUKu/76DX0EMN5HOcAEIKrusTZ4k6JYpA5DN2VmESOEbNgwd23623L6wRh0WdWNK6Hw= 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 Sun, Sep 21 2025, Mike Rapoport wrote: > From: "Mike Rapoport (Microsoft)" > > A vmalloc allocation is preserved using binary structure similar to > global KHO memory tracker. It's a linked list of pages where each page > is an array of physical address of pages in vmalloc area. > > kho_preserve_vmalloc() hands out the physical address of the head page > to the caller. This address is used as the argument to > kho_vmalloc_restore() to restore the mapping in the vmalloc address > space and populate it with the preserved pages. > > Signed-off-by: Mike Rapoport (Microsoft) > Reviewed-by: Pratyush Yadav For the new kho_restore_pages() as well: Reviewed-by: Pratyush Yadav Thanks for working on this series! [...] -- Regards, Pratyush Yadav