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| author | David Matlack <[email protected]> | 2016-03-09 00:19:44 +0000 |
|---|---|---|
| committer | Paolo Bonzini <[email protected]> | 2016-03-09 10:54:14 +0000 |
| commit | 313f636d5c490c9741d3f750dc8da33029edbc6b (patch) | |
| tree | 56e9b7133f98991b710c8776712a2e574c41b78c /drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c | |
| parent | KVM: s390: correct fprs on SIGP (STOP AND) STORE STATUS (diff) | |
| download | kernel-313f636d5c490c9741d3f750dc8da33029edbc6b.tar.gz kernel-313f636d5c490c9741d3f750dc8da33029edbc6b.zip | |
kvm: cap halt polling at exactly halt_poll_ns
When growing halt-polling, there is no check that the poll time exceeds
the limit. It's possible for vcpu->halt_poll_ns grow once past
halt_poll_ns, and stay there until a halt which takes longer than
vcpu->halt_poll_ns. For example, booting a Linux guest with
halt_poll_ns=11000:
... kvm:kvm_halt_poll_ns: vcpu 0: halt_poll_ns 0 (shrink 10000)
... kvm:kvm_halt_poll_ns: vcpu 0: halt_poll_ns 10000 (grow 0)
... kvm:kvm_halt_poll_ns: vcpu 0: halt_poll_ns 20000 (grow 10000)
Signed-off-by: David Matlack <[email protected]>
Fixes: aca6ff29c4063a8d467cdee241e6b3bf7dc4a171
Cc: [email protected]
Signed-off-by: Paolo Bonzini <[email protected]>
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c')
0 files changed, 0 insertions, 0 deletions