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| author |   Juergen Gross <jgross@suse.com> | 2017-06-14 17:12:45 +0200 |
|---|---|---|
| committer | Juergen Gross <jgross@suse.com> | 2017-06-15 08:50:32 +0200 |
| commit | 4a4c29c96dde0eefd69054fd9e6b4255d4717799 (patch) | |
| tree | d13f72b7468d13b163ec0102014d718c32ea66d3 /Documentation/ABI/testing/sysfs-hypervisor-pmu | |
| parent | doc,xen: document hypervisor sysfs nodes for xen (diff) | |
| download | linux-dev-4a4c29c96dde0eefd69054fd9e6b4255d4717799.tar.xz linux-dev-4a4c29c96dde0eefd69054fd9e6b4255d4717799.zip | |
xen: add sysfs node for guest type
Currently there is no reliable user interface inside a Xen guest to
determine its type (e.g. HVM, PV or PVH). Instead of letting user mode
try to determine this by various rather hacky mechanisms (parsing of
boot messages before they are gone, trying to make use of known subtle
differences in behavior of some instructions), add a sysfs node
/sys/hypervisor/guest_type to explicitly deliver this information as
it is known to the kernel.
Signed-off-by: Juergen Gross <jgross@suse.com>
Reviewed-by: Boris Ostrovsky <boris.ostrovsky@oracle.com>
Signed-off-by: Juergen Gross <jgross@suse.com>
Diffstat (limited to 'Documentation/ABI/testing/sysfs-hypervisor-pmu')
| -rw-r--r-- | Documentation/ABI/testing/sysfs-hypervisor-pmu | 23 |
1 files changed, 0 insertions, 23 deletions
diff --git a/Documentation/ABI/testing/sysfs-hypervisor-pmu b/Documentation/ABI/testing/sysfs-hypervisor-pmu deleted file mode 100644 index 224faa105e18..000000000000 --- a/Documentation/ABI/testing/sysfs-hypervisor-pmu +++ /dev/null @@ -1,23 +0,0 @@ -What: /sys/hypervisor/pmu/pmu_mode -Date: August 2015 -KernelVersion: 4.3 -Contact: Boris Ostrovsky <boris.ostrovsky@oracle.com> -Description: - Describes mode that Xen's performance-monitoring unit (PMU) - uses. Accepted values are - "off" -- PMU is disabled - "self" -- The guest can profile itself - "hv" -- The guest can profile itself and, if it is - privileged (e.g. dom0), the hypervisor - "all" -- The guest can profile itself, the hypervisor - and all other guests. Only available to - privileged guests. - -What: /sys/hypervisor/pmu/pmu_features -Date: August 2015 -KernelVersion: 4.3 -Contact: Boris Ostrovsky <boris.ostrovsky@oracle.com> -Description: - Describes Xen PMU features (as an integer). A set bit indicates - that the corresponding feature is enabled. See - include/xen/interface/xenpmu.h for available features |