This patch series extends the arm64 KVM selftest framework to support 52-bit guest virtual address (VA) modes in addition to the existing 52-bit physical address (PA) configurations. The motivation is to enable validation of LPA2 guest memory-management behaviour in configurations that use a 52-bit VA space. While the selftest framework already supports testing 52-bit PA configurations, it lacks the ability to exercise guests running with 52-bit virtual addresses, leaving part of the LPA2 functionality untested. To address this, the series introduces new guest modes for 52-bit VA operation, adds five-level page table support where required, and performs runtime detection of host 52-bit VA capability so that LPA2-enabled guest VA tests are executed only on supported systems.
Testing: Built and tested on arm64. Verified on QEMU with a V52-capable guest configuration. Confirmed correct operation of high virtual address mappings by exercising guest memory accesses in the 52-bit VA range. Signed-off-by: Itaru Kitayama <[email protected]> Reviewed-by: Takayuki Okamoto <[email protected]> --- Itaru Kitayama (2): KVM: selftest: arm64: Support 5-level paging in stage 1 translation table KVM: selftests: arm64: Add 52-bit VA guest modes .../selftests/kvm/include/arm64/processor.h | 2 + tools/testing/selftests/kvm/include/kvm_util.h | 3 + tools/testing/selftests/kvm/lib/arm64/processor.c | 87 ++++++++++++++++++++-- tools/testing/selftests/kvm/lib/guest_modes.c | 5 ++ tools/testing/selftests/kvm/lib/kvm_util.c | 11 +++ 5 files changed, 103 insertions(+), 5 deletions(-) --- base-commit: 8d3ae59288f1e7d58d76558a6ee96d533bc5019f change-id: 20260825-arm64-52bit-va-32f1f4cd050d Best regards, -- Itaru Kitayama <[email protected]>
