[PATCH 0/2] KVM : selftests: arm64: Explicitly set the page attrs to Inner-Shareable

From: Raghavendra Rao Ananta
Date: Fri Apr 04 2025 - 18:07:12 EST


The series fixes a conflict in memory attributes in some implementations,
such as Neoverse-N3, that causes a data abort in guest EL1 with FSC
0x35 (IMPLEMENTATION DEFINED fault (Unsupported Exclusive or Atomic
access)).

Patch-1 is a cleanup patch that replaces numbers (and comments) to
using proper macros for hardware configuration, such as registers and
page-table entries.

Patch-2 fixes the actual bug and sets the page attrs to Inner-Shareable
by default for the VMs created in the selftests. More details are
presented in the commit text.

Raghavendra Rao Ananta (2):
KVM: selftests: arm64: Introduce and use hardware-definition macros
KVM: selftests: arm64: Explicitly set the page attrs to
Inner-Shareable

tools/arch/arm64/include/asm/sysreg.h | 38 ++++++++++++
.../selftests/kvm/arm64/page_fault_test.c | 2 +-
.../selftests/kvm/include/arm64/processor.h | 29 +++++++--
.../selftests/kvm/lib/arm64/processor.c | 60 +++++++++++--------
4 files changed, 96 insertions(+), 33 deletions(-)


base-commit: 38fec10eb60d687e30c8c6b5420d86e8149f7557
--
2.49.0.504.g3bcea36a83-goog