On Tue, 16 Aug 2022 19:25:17 -0300, Fabiano Rosas wrote:
> We used to have a workaround[1] for a hang during migration that was
> made ineffective when we converted the decrementer expiry to be
> relative to guest timebase.
>
> The point of the workaround was that in the absence of an explicit
> decrementer expiry value provided by userspace during migration, KVM
> needs to initialize dec_expires to a value that will result in an
> expired decrementer after subtracting the current guest timebase. That
> stops the vcpu from hanging after migration due to a decrementer
> that's too large.
>
> [...]
Applied to powerpc/topic/ppc-kvm.
[1/1] KVM: PPC: Book3S HV: Fix decrementer migration
https://git.kernel.org/powerpc/c/0a5bfb824a6ea35e54b7e5ac6f881beea5e309d2
cheers
