Re: [PATCH v5 0/4] Allow userspace to change ID_AA64PFR1_EL1
From: Marc Zyngier
Date: Sun Aug 25 2024 - 13:01:58 EST
On Tue, 23 Jul 2024 03:19:59 -0400, Shaoqin Huang wrote:
> This is another try to allow userspace to change ID_AA64PFR1_EL1, and we want to
> give userspace the ability to control the visible feature set for a VM, which
> could be used by userspace in such a way to transparently migrate VMs.
>
> The patch series have four part:
>
> The first patch disable those fields which KVM doesn't know how to handle, so
> KVM will only expose value 0 of those fields to the guest.
>
> [...]
Applied to next, thanks!
[1/4] KVM: arm64: Disable fields that KVM doesn't know how to handle in ID_AA64PFR1_EL1
commit: ffe68b2d19a5a84440fea99a732cfc3b157559eb
[2/4] KVM: arm64: Use kvm_has_feat() to check if FEAT_SSBS is advertised to the guest
commit: e8d164974cfa46fe5ec87869c8a7113641f322d5
[3/4] KVM: arm64: Allow userspace to change ID_AA64PFR1_EL1
commit: 78c4446b5f957fb14737582e503b1b25f66edc45
[4/4] KVM: selftests: aarch64: Add writable test for ID_AA64PFR1_EL1
commit: dc9b5d7e0bd40e68a94013766b27be3dda10c006
Cheers,
M.
--
Without deviation from the norm, progress is not possible.