Allow userspace to change the guest-visible value of the register with
some severe limitation:
- No changes to features not virtualized by KVM (MPAM_frac, RAS_frac)
Also add the selftest for it.
Changelog:
----------
v1 -> v2:
* Tackling the full register instead of single field.
* Changing the patch title and commit message.
RFCv1 -> v1:
* Fix the compilation error.
* Delete the machine specific information and make the description more
generable.
RFCv1: https://lore.kernel.org/all/20240612023553.127813-1-shahuang@xxxxxxxxxx/
v1: https://lore.kernel.org/all/20240617075131.1006173-1-shahuang@xxxxxxxxxx/
Shaoqin Huang (2):
KVM: arm64: Allow userspace to change ID_AA64PFR1_EL1
KVM: selftests: aarch64: Add writable test for ID_AA64PFR1_EL1
arch/arm64/kvm/sys_regs.c | 3 ++-
tools/testing/selftests/kvm/aarch64/set_id_regs.c | 9 +++++++++
2 files changed, 11 insertions(+), 1 deletion(-)
--
2.40.1
