Xie Yongji c32ee69312 vduse: Remove unnecessary spin lock protection ... Now we use domain->iotlb_lock to protect two different variables: domain->bounce_maps->bounce_page and domain->iotlb. But for domain->bounce_maps->bounce_page, we actually don't need any synchronization between vduse_domain_get_bounce_page() and vduse_domain_free_bounce_pages() since vduse_domain_get_bounce_page() will only be called in page fault handler and vduse_domain_free_bounce_pages() will be called during file release. So let's remove the unnecessary spin lock protection in vduse_domain_get_bounce_page(). Then the usage of domain->iotlb_lock could be more clear: the lock will be only used to protect the domain->iotlb. Signed-off-by: Xie Yongji <xieyongji@bytedance.com> Acked-by: Jason Wang <jasowang@redhat.com> Message-Id: <20220803045523.23851-2-xieyongji@bytedance.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>		2022-08-11 04:26:08 -04:00
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iova_domain.c	vduse: Remove unnecessary spin lock protection	2022-08-11 04:26:08 -04:00
iova_domain.h
Makefile
vduse_dev.c	vduse: Tie vduse mgmtdev and its device	2022-06-24 02:49:48 -04:00