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Fri, 24 Nov 2023 23:24:24 +0000 From: Volodymyr Babchuk To: "qemu-devel@nongnu.org" CC: David Woodhouse , Stefano Stabellini , Julien Grall , Oleksandr Tyshchenko , Volodymyr Babchuk , =?utf-8?q?Philippe_Mathieu-?= =?utf-8?q?Daud=C3=A9?= , Peter Maydell , "open list:ARM TCG CPUs" Subject: [PATCH v3 4/5] xen_arm: set mc->max_cpus to GUEST_MAX_VCPUS Thread-Topic: [PATCH v3 4/5] xen_arm: set mc->max_cpus to GUEST_MAX_VCPUS Thread-Index: AQHaHy1bXZxItaI7lEWj7O2d5pS3Rw== Date: Fri, 24 Nov 2023 23:24:23 +0000 Message-ID: <20231124232400.943580-5-volodymyr_babchuk@epam.com> References: <20231124232400.943580-1-volodymyr_babchuk@epam.com> In-Reply-To: <20231124232400.943580-1-volodymyr_babchuk@epam.com> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-mailer: git-send-email 2.42.0 x-ms-publictraffictype: Email x-ms-traffictypediagnostic: VI1PR03MB3710:EE_|DU0PR03MB8551:EE_ x-ms-office365-filtering-correlation-id: 0abb95d0-583f-42ef-b57a-08dbed447eaa x-ms-exchange-senderadcheck: 1 x-ms-exchange-antispam-relay: 0 x-microsoft-antispam: BCL:0; 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envelope-from=prvs=569229df20=volodymyr_babchuk@epam.com; helo=mx0b-0039f301.pphosted.com X-Spam_score_int: -27 X-Spam_score: -2.8 X-Spam_bar: -- X-Spam_report: (-2.8 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_LOW=-0.7, RCVD_IN_MSPIKE_H5=0.001, RCVD_IN_MSPIKE_WL=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org From: Oleksandr Tyshchenko The number of vCPUs used for the IOREQ configuration (machine->smp.cpus) should really match the system value as for each vCPU we setup a dedicated evtchn for the communication with Xen at the runtime. This is needed for the IOREQ to be properly configured and work if the involved domain has more than one vCPU assigned. Set the number of current supported guest vCPUs here (128) which is defined in public header arch-arm.h. So when the toolstack pass max_vcpus using "-smp" arg, machine creation will not fail. Signed-off-by: Oleksandr Tyshchenko Signed-off-by: Volodymyr Babchuk Reviewed-by: Philippe Mathieu-Daudé --- hw/arm/xen_arm.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/hw/arm/xen_arm.c b/hw/arm/xen_arm.c index a5631529d0..b9c3ae14b6 100644 --- a/hw/arm/xen_arm.c +++ b/hw/arm/xen_arm.c @@ -231,7 +231,7 @@ static void xen_arm_machine_class_init(ObjectClass *oc, void *data) MachineClass *mc = MACHINE_CLASS(oc); mc->desc = "Xen Para-virtualized PC"; mc->init = xen_arm_init; - mc->max_cpus = 1; + mc->max_cpus = GUEST_MAX_VCPUS; mc->default_machine_opts = "accel=xen"; /* Set explicitly here to make sure that real ram_size is passed */ mc->default_ram_size = 0;