On Wed, 11 Dec 2024 09:45:14 +0000, Keir Fraser wrote:
> VCPU threads may currently enter their run loops before all other
> VCPUs have "reset" to an appropriate initial state.
>
> Actually this normally works okay, but on pKVM-ARM the VM's Hyp state
> (including boot VCPU's initial state) gets set up by the first VCPU
> thread to call ioctl(KVM_RUN). This races boot VCPU thread's
> intialisation of register state, and can result in the boot VCPU
> starting execution at PC=0.
>
> [...]
Applied to kvmtool (master), thanks!
[1/1] Reset all VCPUs before any entering run loops
https://git.kernel.org/will/kvmtool/c/6d754d01fe2c
Cheers,
--
Will
https://fixes.arm64.dev
https://next.arm64.dev
https://will.arm64.dev
