The main purpose of this patchset is to implement FEAT_PAN3, which allows the guest to force privileged code to not be able to access memory that can be executed by user code. (This is an extension of the existing FEAT_PAN which denies access if user code could read or write the memory.) That is all done in patch 3.
Patches 1 and 2 fix a buglet in our ESR_EL2 syndrome reporting that I happened to notice while testing the FEAT_PAN3 code: we were reporting the detailed instruction syndrome information for all data aborts reported to EL2, whereas the architecture requires this to happen only for stage-2 aborts, not stage-1 aborts. This is all for-8.1 material -- the syndrome bug is minor and has been around forever so isn't worth trying to fix for 8.0 at this point in the release cycle. thanks -- PMM Peter Maydell (3): target/arm: Pass ARMMMUFaultInfo to merge_syn_data_abort() target/arm: Don't set ISV when reporting stage 1 faults in ESR_EL2 target/arm: Implement FEAT_PAN3 docs/system/arm/emulation.rst | 1 + target/arm/cpu.h | 5 +++++ target/arm/cpu64.c | 2 +- target/arm/ptw.c | 14 +++++++++++++- target/arm/tcg/tlb_helper.c | 26 ++++++++++++++++---------- 5 files changed, 36 insertions(+), 12 deletions(-) -- 2.34.1
