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authorLinus Torvalds <torvalds@linux-foundation.org>2018-06-12 13:11:26 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2018-06-12 13:11:26 -0700
commit467590e055f5c714fb457803250415879d0da9e5 (patch)
tree7533a26dcd19023d5eeac54f62432097c85f4ef3 /Documentation/vfio-mediated-device.txt
parent763f96944c954ce0e00a10a7bdfe29adbe4f92eb (diff)
parentc1abca96b252a9627f99f39215b84e5de92bf1e3 (diff)
downloadop-kernel-dev-467590e055f5c714fb457803250415879d0da9e5.zip
op-kernel-dev-467590e055f5c714fb457803250415879d0da9e5.tar.gz
Merge tag 'vfio-v4.18-rc1' of git://github.com/awilliam/linux-vfio
Pull VFIO updates from Alex Williamson: - Bind type1 task tracking to group_leader to facilitate vCPU hotplug in QEMU (Alex Williamson) - Sample mdev display drivers, including region-based host and guest Linux drivers and bochs compatible dmabuf device (Gerd Hoffmann) - Fix vfio-platform reset module leak (Geert Uytterhoeven) - vfio-platform error message consistency (Geert Uytterhoeven) - Global checking for mdev uuid collisions rather than per parent device (Alex Williamson) - Use match_string() helper (Yisheng Xie) - vfio-platform PM domain fixes (Geert Uytterhoeven) - Fix sample mbochs driver build dependency (Arnd Bergmann) * tag 'vfio-v4.18-rc1' of git://github.com/awilliam/linux-vfio: samples: mbochs: add DMA_SHARED_BUFFER dependency vfio: platform: Fix using devices in PM Domains vfio: use match_string() helper vfio/mdev: Re-order sysfs attribute creation vfio/mdev: Check globally for duplicate devices vfio: platform: Make printed error messages more consistent vfio: platform: Fix reset module leak in error path sample: vfio bochs vbe display (host device for bochs-drm) sample: vfio mdev display - guest driver sample: vfio mdev display - host device vfio/type1: Fix task tracking for QEMU vCPU hotplug
Diffstat (limited to 'Documentation/vfio-mediated-device.txt')
-rw-r--r--Documentation/vfio-mediated-device.txt5
1 files changed, 5 insertions, 0 deletions
diff --git a/Documentation/vfio-mediated-device.txt b/Documentation/vfio-mediated-device.txt
index 1b39503..c3f69bc 100644
--- a/Documentation/vfio-mediated-device.txt
+++ b/Documentation/vfio-mediated-device.txt
@@ -145,6 +145,11 @@ The functions in the mdev_parent_ops structure are as follows:
* create: allocate basic resources in a driver for a mediated device
* remove: free resources in a driver when a mediated device is destroyed
+(Note that mdev-core provides no implicit serialization of create/remove
+callbacks per mdev parent device, per mdev type, or any other categorization.
+Vendor drivers are expected to be fully asynchronous in this respect or
+provide their own internal resource protection.)
+
The callbacks in the mdev_parent_ops structure are as follows:
* open: open callback of mediated device
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