[PATCH 0/2] KVM: arm64: ID register finalisation fixes

Mark Brown <[email protected]> Fri, 31 Jul 2026 21:44:44 +0100
Newsgroups dev.linux.lists.kvmarm,org.infradead.lists.linux-arm-kernel,org.kernel.vger.linux-kernel
Message-ID <[email protected]>
While looking at some feature enablement I noticed that there are some
scenarios where we can end up with an inconsistently configured vCPU due
to finalizing configuration based on ID registers before we have blocked
writes to the ID registers. This series aims to clean up these issues.

Signed-off-by: Mark Brown <[email protected]>
---
Mark Brown (2):
      KVM: arm64: Finalize guest-wide sysregs prior to per-vCPU sysregs
      KVM: arm64: Block ID register changes after we rely on the values

 arch/arm64/include/asm/kvm_host.h |  8 ++++++
 arch/arm64/kvm/arm.c              |  2 +-
 arch/arm64/kvm/sys_regs.c         | 53 +++++++++++++++++++++++++--------------
 arch/arm64/kvm/sys_regs.h         |  2 +-
 arch/arm64/kvm/vgic/vgic-init.c   |  6 ++---
 5 files changed, 46 insertions(+), 25 deletions(-)
---
base-commit: f5098b6bae761e346ebcd9da7f95622c04733cff
change-id: 20260729-kvm-arm64-idreg-final-77cbc46b558a

Best regards,
--  
Mark Brown <[email protected]>