Messages in this thread | | | From | Marc Zyngier <> | Subject | Re: [PATCH v2 0/2] KVM: arm64: Optimize the wait for the completion of the VPT analysis | Date | Fri, 11 Dec 2020 15:01:39 +0000 |
| |
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.
| |