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Thursday, October 29 • 16:00 - 16:30
Changing Paravirt Lock-ops for a Changing World - Ankur Arora, Oracle

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Paravirt ops are set in stone once a guest has booted. As an example we might expose `KVM_HINTS_REALTIME` to a guest and this hint is expected to stay true for the lifetime of the guest. However, events in a guest's life, like changed host conditions or migration might mean that it would be more optimal to revoke this hint. This talk discusses two aspects of this revocation: one, support for revocable `KVM_HINTS_REALTIME` and, second, work done in the paravirt ops subsystem to dynamically modify spinlock-ops.
Speakers
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Ankur Arora

PMTS, Oracle Corp
Ankur Arora is a PMTS in the Linux and Virtualization group at Oracle. His focus for the past few years has been on x86 virtualization for KVM and Xen. In past lives, he's worked on highly parallel HW for Oracle, and on near memory storage for Virident. In days of yore, he did research... Read More →

Dynamic lock ops KVM forum 2020 pdf
Thursday October 29, 2020 16:00 - 16:30 GMT
KVM Theater
  KVM Forum, KVM