linux-kernel - [PATCH] vhost-vdpa: clean irqs before reseting vdpa device

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Message-Id: <a2cb60cf73be9da5c4e6399242117d8818f975ae.1636946171.git.wuzongyong@linux.alibaba.com>
Date:   Mon, 15 Nov 2021 11:16:42 +0800
From:   Wu Zongyong <wuzongyong@...ux.alibaba.com>
To:     jasowang@...hat.com, virtualization@...ts.linux-foundation.org,
        linux-kernel@...r.kernel.org, mst@...hat.com,
        wuzongyong@...ux.alibaba.com
Cc:     wei.yang1@...ux.alibaba.com
Subject: [PATCH] vhost-vdpa: clean irqs before reseting vdpa device

Vdpa devices should be reset after unseting irqs of virtqueues, or we
will get errors when killing qemu process:

>> pi_update_irte: failed to update PI IRTE
>> irq bypass consumer (token 0000000065102a43) unregistration fails: -22

Signed-off-by: Wu Zongyong <wuzongyong@...ux.alibaba.com>
---
 drivers/vhost/vdpa.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/vhost/vdpa.c b/drivers/vhost/vdpa.c
index 01c59ce7e250..29cced1cd277 100644
--- a/drivers/vhost/vdpa.c
+++ b/drivers/vhost/vdpa.c
@@ -1014,12 +1014,12 @@ static int vhost_vdpa_release(struct inode *inode, struct file *filep)
 
 	mutex_lock(&d->mutex);
 	filep->private_data = NULL;
+	vhost_vdpa_clean_irq(v);
 	vhost_vdpa_reset(v);
 	vhost_dev_stop(&v->vdev);
 	vhost_vdpa_iotlb_free(v);
 	vhost_vdpa_free_domain(v);
 	vhost_vdpa_config_put(v);
-	vhost_vdpa_clean_irq(v);
 	vhost_dev_cleanup(&v->vdev);
 	kfree(v->vdev.vqs);
 	mutex_unlock(&d->mutex);
-- 
2.31.1