mshv-ioctls/system: Enable Direct mode stimer #131
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Enable direct mode for synthetic timer. This allows synthetic timer interrupts to work early in the boot without having to wait for VMbus to be initialized. Signed-off-by: Praveen K Paladugu <[email protected]>
praveen-pk
requested review from
russell-islam,
liuw,
NunoDasNeves and
jinankjain
as code owners
|
@NunoDasNeves @jinankjain @russell-islam I will leave this to you. |
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@praveen-pk Do you know which CPU register is used for this timer? |
HV_REGISTER_FEATURES (0x00000200), seems to be part of CPUID. |
russell-islam
approved these changes
Mar 13, 2024
|
@praveen-pk Are there any performance implications by turning on the stimer? |
If any, this should reduce the overhead of passing timer interrupts to guest. So, this change should not have any negative performance implications. |
NunoDasNeves
approved these changes
Mar 18, 2024
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Summary of the PR
Enable direct mode for synthetic timers. This allows synthetic timer interrupts to work early in the boot without having to wait for VMbus to be initialized.