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[175.34.8.244]) by smtp.gmail.com with ESMTPSA id 98e67ed59e1d1-3a4f6fb6438sm1829850a91.0.2026.10.01.06.10.20 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Thu, 01 Oct 2026 06:10:27 -0700 (PDT) Message-ID: <79509ef8-6b7b-4499-b2bf-f400b1c197bf@redhat.com> Date: Thu, 1 Oct 2026 23:10:19 +1000 Precedence: bulk X-Mailing-List: linux-coco@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v21 9/9] firmware: arm_rmm: hotplug: Skip memory added to ZONE_MOVABLE To: Suzuki K Poulose , kvm@vger.kernel.org, kvmarm@lists.linux.dev Cc: maz@kernel.org, will@kernel.org, catalin.marinas@arm.com, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, steven.price@arm.com, aneesh.kumar@kernel.org, oupton@kernel.org, joey.gouly@arm.com, tabba@google.com, yuzenghui@huawei.com, linux-coco@lists.linux.dev, gankulkarni@os.amperecomputing.com, sdonthineni@nvidia.com, alpergun@google.com, fj0570is@fujitsu.com, WeiLin.Chang@arm.com, lpieralisi@kernel.org, enju.kohei@fujitsu.com, sudeep.holla@arm.com, jonathan.cameron@oss.qualcomm.com, David Hildenbrand References: <20261001084555.1456543-1-suzuki.poulose@arm.com> <20261001084555.1456543-10-suzuki.poulose@arm.com> From: Gavin Shan In-Reply-To: <20261001084555.1456543-10-suzuki.poulose@arm.com> X-Mimecast-Spam-Score: 0 X-Mimecast-MFC-PROC-ID: KqPjg2XP6GoPvTUytyvcoxsWTn3h3bJ7MMmoevWiVz4_1790860230 X-Mimecast-Originator: redhat.com Content-Language: en-US Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit On 10/1/26 6:45 PM, Suzuki K Poulose wrote: > If the hotadded memory is in ZONE_MOVABLE, we could allow that to proceed > without the RMM having fine grained tracking, as we won't allocate pages > from there for guest-memfd or kernel allocation > > Cc: Catalin Marinas > Cc: David Hildenbrand (Arm) > Reviewed-by: Catalin Marinas > Signed-off-by: Suzuki K Poulose > --- > Changes since v20: > - Use is_zone_movable_page() and only check the start_pfn > --- > drivers/firmware/arm_rmm/rmi.c | 11 +++++++++++ > 1 file changed, 11 insertions(+) > Reviewed-by: Gavin Shan