KVM: arm64: nv: Read a guest hypervisor's CNTV_CVAL_EL0 from memory on x1e

On x1e KVM keeps CNTVOFF_EL2 at zero, traps the virtual timer whenever
it has an offset and programs the hardware with the offset applied.
kvm_hyp_handle_timer() returns that hardware value for a VHE guest
hypervisor's read of its own CNTV_CVAL_EL0, instead of the CVAL it
wrote. Its writes trap to the kernel and land in CNTHV_CVAL_EL2, so
return that, as the physical timer's read does without CNTPOFF_EL2.

Fixes: 0bc9a9e85fcf ("KVM: arm64: Work around x1e's CNTVOFF_EL2 bogosity")
Signed-off-by: Fuad Tabba <fuad.tabba@linux.dev>
Link: https://patch.msgid.link/20261007074343.324269-3-fuad.tabba@linux.dev
Signed-off-by: Marc Zyngier <maz@kernel.org>

0 files changed, 0 insertions, 0 deletions