On Thu, 15 Apr 2021 14:17:25 +0100, Alexandru Elisei wrote:
> pmu__generate_fdt_nodes() checks if the host has support for PMU in a guest
> and prints a warning if that's not the case. However, this check is too
> late because the function is called after the VCPU has been created, and
> VCPU creation fails if KVM_CAP_ARM_PMU_V3 is not available with a rather
> unhelpful error:
>
> $ ./vm run -c1 -m64 -f selftest.flat --pmu
> # lkvm run --firmware selftest.flat -m 64 -c 1 --name guest-1039
> Info: Placing fdt at 0x80200000 - 0x80210000
> Fatal: Unable to initialise vcpu
>
> [...]
Applied to kvmtool (master), thanks!
[1/1] arm: Fail early if KVM_CAP_ARM_PMU_V3 is not supported
https://git.kernel.org/will/kvmtool/c/415f92c33a22
Cheers,
--
Will
https://fixes.arm64.dev
https://next.arm64.dev
https://will.arm64.dev
