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Date: Thu, 30 Aug 2018 17:41:09 +0000 From: Dexuan Cui <decui@...rosoft.com> To: KY Srinivasan <kys@...rosoft.com>, "'gregkh@...uxfoundation.org'" <gregkh@...uxfoundation.org>, Stephen Hemminger <sthemmin@...rosoft.com>, Haiyang Zhang <haiyangz@...rosoft.com> CC: "'linux-kernel@...r.kernel.org'" <linux-kernel@...r.kernel.org>, "'driverdev-devel@...uxdriverproject.org'" <driverdev-devel@...uxdriverproject.org>, "'olaf@...fle.de'" <olaf@...fle.de>, "'apw@...onical.com'" <apw@...onical.com>, "'jasowang@...hat.com'" <jasowang@...hat.com>, vkuznets <vkuznets@...hat.com>, "'marcelo.cerri@...onical.com'" <marcelo.cerri@...onical.com> Subject: RE: [PATCH] Drivers: hv: vmbus: Use raw_smp_processor_id() in vmbus_connect() > From: KY Srinivasan > Sent: Thursday, August 30, 2018 10:32 > > > */ > > > if (version >= VERSION_WIN8_1) { > > > msg->target_vcpu = > > > - hv_cpu_number_to_vp_number(smp_processor_id()); > > > - vmbus_connection.connect_cpu = smp_processor_id(); > > > > > + hv_cpu_number_to_vp_number(get_cpu()); > > > + vmbus_connection.connect_cpu = msg->target_vcpu; > > > + put_cpu(); > > > > While the warning " BUG: using smp_processor_id() in preemptible" can also > > be avoided, the line > > + vmbus_connection.connect_cpu = msg->target_vcpu; > > seems incorrect, as the "connect_cpu" should reflect Linux CPU numbering > > rather than Hyper-V's vCPU numbering. > > Yes of course! Can you send me a patch with the fix. > > K. Y Ok. Will do. -- Dexuan
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