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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2020-02-05 17:44:14 +0000 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2020-02-05 17:44:14 +0000 |
| commit | d271ab29230b1d0ceb426f374c221c4eb2c91c64 (patch) | |
| tree | 9c97e0196c5c1bab8bfbee95a052dbfd0fd0d6d2 /Documentation | |
| parent | 2634744bf38ab20d17fe8220f1f83b6f3801386f (diff) | |
| parent | 8557bbe5156e5fba022d5a5220004b1e016227ee (diff) | |
| download | linux-d271ab29230b1d0ceb426f374c221c4eb2c91c64.tar.bz2 | |
Merge tag 'for-linus-5.6-rc1-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip
Pull xen updates from Juergen Gross:
- fix a bug introduced in 5.5 in the Xen gntdev driver
- fix the Xen balloon driver when running on ancient Xen versions
- allow Xen stubdoms to control interrupt enable flags of
passed-through PCI cards
- release resources in Xen backends under memory pressure
* tag 'for-linus-5.6-rc1-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip:
xen/blkback: Consistently insert one empty line between functions
xen/blkback: Remove unnecessary static variable name prefixes
xen/blkback: Squeeze page pools if a memory pressure is detected
xenbus/backend: Protect xenbus callback with lock
xenbus/backend: Add memory pressure handler callback
xen/gntdev: Do not use mm notifiers with autotranslating guests
xen/balloon: Support xend-based toolstack take two
xen-pciback: optionally allow interrupt enable flag writes
Diffstat (limited to 'Documentation')
| -rw-r--r-- | Documentation/ABI/testing/sysfs-driver-pciback | 13 | ||||
| -rw-r--r-- | Documentation/ABI/testing/sysfs-driver-xen-blkback | 10 |
2 files changed, 23 insertions, 0 deletions
diff --git a/Documentation/ABI/testing/sysfs-driver-pciback b/Documentation/ABI/testing/sysfs-driver-pciback index 6a733bfa37e6..73308c2b81b0 100644 --- a/Documentation/ABI/testing/sysfs-driver-pciback +++ b/Documentation/ABI/testing/sysfs-driver-pciback @@ -11,3 +11,16 @@ Description: #echo 00:19.0-E0:2:FF > /sys/bus/pci/drivers/pciback/quirks will allow the guest to read and write to the configuration register 0x0E. + +What: /sys/bus/pci/drivers/pciback/allow_interrupt_control +Date: Jan 2020 +KernelVersion: 5.6 +Contact: xen-devel@lists.xenproject.org +Description: + List of devices which can have interrupt control flag (INTx, + MSI, MSI-X) set by a connected guest. It is meant to be set + only when the guest is a stubdomain hosting device model (qemu) + and the actual device is assigned to a HVM. It is not safe + (similar to permissive attribute) to set for a devices assigned + to a PV guest. The device is automatically removed from this + list when the connected pcifront terminates. diff --git a/Documentation/ABI/testing/sysfs-driver-xen-blkback b/Documentation/ABI/testing/sysfs-driver-xen-blkback index 4e7babb3ba1f..ecb7942ff146 100644 --- a/Documentation/ABI/testing/sysfs-driver-xen-blkback +++ b/Documentation/ABI/testing/sysfs-driver-xen-blkback @@ -25,3 +25,13 @@ Description: allocated without being in use. The time is in seconds, 0 means indefinitely long. The default is 60 seconds. + +What: /sys/module/xen_blkback/parameters/buffer_squeeze_duration_ms +Date: December 2019 +KernelVersion: 5.6 +Contact: SeongJae Park <sjpark@amazon.de> +Description: + When memory pressure is reported to blkback this option + controls the duration in milliseconds that blkback will not + cache any page not backed by a grant mapping. + The default is 10ms. |