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[175.34.8.244]) by smtp.gmail.com with ESMTPSA id 98e67ed59e1d1-38e2a228336sm1251715a91.2.2026.07.15.21.52.59 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Wed, 15 Jul 2026 21:53:02 -0700 (PDT) Message-ID: <2024059d-b56b-49a7-91e1-aa9fa357a097@redhat.com> Date: Thu, 16 Jul 2026 14:52:57 +1000 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v1 11/11] arm_mpam: Switch to kvzmalloc_objs() for allocation of component cfg To: Ben Horgan Cc: james.morse@arm.com, reinette.chatre@intel.com, fenghuay@nvidia.com, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, dave.martin@arm.com, andre.przywara@arm.com References: <20260710115546.29644-1-ben.horgan@arm.com> <20260710115546.29644-12-ben.horgan@arm.com> From: Gavin Shan In-Reply-To: <20260710115546.29644-12-ben.horgan@arm.com> X-Mimecast-Spam-Score: 0 X-Mimecast-MFC-PROC-ID: AwXUzV6hRGw2S5_TaN3XwOVGApSjqH3lNnFahN5485A_1784177584 X-Mimecast-Originator: redhat.com Content-Language: en-US Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.9.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20260715_215308_247433_77C4CCB1 X-CRM114-Status: GOOD ( 11.25 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org On 7/10/26 9:55 PM, Ben Horgan wrote: > Each component cfg is sized by the size of a per-PARTID multiplied by the > number of PARTIDs. On a platform sized to push the limits of the > specification, the allocation using kzalloc_objs() will consistently > fail. Change to use kvzmalloc_objs() so that large allocations fall back to > vmalloc() based allocations. > > Fixes: 09b89d2a72f3 ("arm_mpam: Allow configuration to be applied and restored during cpu online") > Signed-off-by: Ben Horgan > --- > drivers/resctrl/mpam_devices.c | 4 ++-- > 1 file changed, 2 insertions(+), 2 deletions(-) > Reviewed-by: Gavin Shan