Hi Hikaru,

On Wed, 20 Oct 2021 13:04:25 +0100,
Hikaru Nishida [off-list ref] wrote:

Hi,

This patch series adds virtual suspend time injection support to KVM.
It is an updated version of the following series:
v2:
https://lore.kernel.org/kvm/20210806100710.2425336-1-hikalium@chromium.org/ (local)
v1:
https://lore.kernel.org/kvm/20210426090644.2218834-1-hikalium@chromium.org/ (local)

Please take a look again.

To kvm/arm64 folks:
I'm going to implement this mechanism to ARM64 as well but not
sure which function should be used to make an IRQ (like kvm_apic_set_irq
in x86) and if it is okay to use kvm_gfn_to_hva_cache /
kvm_write_guest_cached for sharing the suspend duration.

Before we discuss interrupt injection, I want to understand what this
is doing, and how this is doing it. And more precisely, I want to find
out how you solve the various problems described by Thomas here [1].

Assuming you solve these, you should model the guest memory access
similarly to what we do for stolen time. As for injecting an
interrupt, why can't this be a userspace thing?

Thanks,

	M.

[1] https://lore.kernel.org/all/871r557jls.ffs@tglx (local)


-- 
Without deviation from the norm, progress is not possible.