On Sat, 28 Nov 2020 22:18:55 +0800, Shenming Lu wrote:
> Right after a vPE is made resident, the code starts polling the
> GICR_VPENDBASER.Dirty bit until it becomes 0, where the delay_us
> is set to 10. But in our measurement, it takes only hundreds of
> nanoseconds, or 1~2 microseconds, to finish parsing the VPT in most
> cases. What's more, we found that the MMIO delay on GICv4.1 system
> (HiSilicon) is about 10 times higher than that on GICv4.0 system in
> kvm-unit-tests (the specific data is as follows).
>
> [...]
Applied to irq/irqchip-next, thanks!
[1/2] irqchip/gic-v4.1: Reduce the delay time of the poll on the GICR_VPENDBASER.Dirty bit
commit: 0b39498230ae53e6af981141be99f4c7d5144de6
Patch 2 will be routed via the KVM/arm64 tree.
Cheers,
M.
--
Without deviation from the norm, progress is not possible.
