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[34.83.136.168]) by smtp.gmail.com with ESMTPSA id d9443c01a7336-2ccc9bf77e4sm104688515ad.22.2026.07.13.14.26.41 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 13 Jul 2026 14:26:41 -0700 (PDT) Date: Mon, 13 Jul 2026 21:26:38 +0000 From: Samiullah Khawaja To: Pranjal Shrivastava Cc: Mike Rapoport , Pasha Tatashin , Pratyush Yadav , Alexander Graf , David Matlack , kexec@lists.infradead.org, linux-mm@kvack.org, linux-kernel@vger.kernel.org Subject: Re: [RFC PATCH v2 1/2] kho: Introduce a helper to init unsplit pages Message-ID: References: <20260713204935.3069000-1-praan@google.com> <20260713204935.3069000-2-praan@google.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii; format=flowed Content-Disposition: inline In-Reply-To: <20260713204935.3069000-2-praan@google.com> On Mon, Jul 13, 2026 at 08:49:34PM +0000, Pranjal Shrivastava wrote: >The current KHO restoration logic assumes all multi-page blocks are >split into independent 4KB pages. Break out a helper to prepare for >supporting high-order non-compound pages. > >Extract kho_init_unsplit_pages() to handle the refcount pattern >where only the head page is refcounted. Use the helper for folio >restoration that requires a similar refcount logic. > >Signed-off-by: Pranjal Shrivastava >--- > kernel/liveupdate/kexec_handover.c | 29 +++++++++++++++++++---------- > 1 file changed, 19 insertions(+), 10 deletions(-) > Reviewed-by: Samiullah Khawaja