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| author | Benjamin Herrenschmidt <[email protected]> | 2018-01-12 02:37:12 +0000 |
|---|---|---|
| committer | Paul Mackerras <[email protected]> | 2018-01-19 01:10:21 +0000 |
| commit | bf4159da4751ab8eea43ca6e7c49193dbce8398c (patch) | |
| tree | f388b8cce6117fd8dd3d592dfa18d7d290ea35a9 /drivers/gpu/drm/amd/amdgpu | |
| parent | KVM: PPC: Book3S HV: Add more info about XIVE queues in debugfs (diff) | |
| download | kernel-bf4159da4751ab8eea43ca6e7c49193dbce8398c.tar.gz kernel-bf4159da4751ab8eea43ca6e7c49193dbce8398c.zip | |
KVM: PPC: Book3S HV: Enable use of the new XIVE "single escalation" feature
That feature, provided by Power9 DD2.0 and later, when supported
by newer OPAL versions, allows us to sacrifice a queue (priority 7)
in favor of merging all the escalation interrupts of the queues
of a single VP into a single interrupt.
This reduces the number of host interrupts used up by KVM guests
especially when those guests use multiple priorities.
It will also enable a future change to control the masking of the
escalation interrupts more precisely to avoid spurious ones.
Signed-off-by: Benjamin Herrenschmidt <[email protected]>
Signed-off-by: Paul Mackerras <[email protected]>
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu')
0 files changed, 0 insertions, 0 deletions