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Message-ID: <BN9PR11MB52764ACFE8333427750E23C48C6B9@BN9PR11MB5276.namprd11.prod.outlook.com>
Date: Fri, 28 Apr 2023 06:28:36 +0000
From: "Tian, Kevin" <kevin.tian@...el.com>
To: "Chatre, Reinette" <reinette.chatre@...el.com>,
"jgg@...dia.com" <jgg@...dia.com>,
"yishaih@...dia.com" <yishaih@...dia.com>,
"shameerali.kolothum.thodi@...wei.com"
<shameerali.kolothum.thodi@...wei.com>,
"alex.williamson@...hat.com" <alex.williamson@...hat.com>
CC: "tglx@...utronix.de" <tglx@...utronix.de>,
"darwi@...utronix.de" <darwi@...utronix.de>,
"kvm@...r.kernel.org" <kvm@...r.kernel.org>,
"Jiang, Dave" <dave.jiang@...el.com>,
"Liu, Jing2" <jing2.liu@...el.com>,
"Raj, Ashok" <ashok.raj@...el.com>,
"Yu, Fenghua" <fenghua.yu@...el.com>,
"tom.zanussi@...ux.intel.com" <tom.zanussi@...ux.intel.com>,
"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: RE: [PATCH V4 01/11] vfio/pci: Consolidate irq cleanup on MSI/MSI-X
disable
> From: Chatre, Reinette <reinette.chatre@...el.com>
> Sent: Friday, April 28, 2023 1:36 AM
>
> vfio_msi_disable() releases all previously allocated state
> associated with each interrupt before disabling MSI/MSI-X.
>
> vfio_msi_disable() iterates twice over the interrupt state:
> first directly with a for loop to do virqfd cleanup, followed
> by another for loop within vfio_msi_set_block() that removes
> the interrupt handler and its associated state using
> vfio_msi_set_vector_signal().
>
> Simplify interrupt cleanup by iterating over allocated interrupts
> once.
>
> Signed-off-by: Reinette Chatre <reinette.chatre@...el.com>
Reviewed-by: Kevin Tian <kevin.tian@...el.com>
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