Hi, Thanks for the feedback so far. This is an updated series documenting the AArch64 Tagged Address ABI as implemented by these patches:
http://lkml.kernel.org/r/cover.1563904656.git.andreyk...@google.com Version 6 of the documentation series is available here: http://lkml.kernel.org/r/20190725135044.24381-1-vincenzo.frasc...@arm.com Changes in v7: - Dropped the MAP_PRIVATE requirements for tagged pointers for both anonymous and file mappings. One reason is that we can't enforce such restriction anyway. The other reason is that a future series implementing support for the hardware MTE will detect incompatibilities of the new PROT_MTE flag with various mmap() options. - As a consequence of the above, I removed Szabolcs ack as I'm not sure he's ok with the change. - Clarified the sysctl and prctl() interaction and reordered the descriptions. - Reworded the prctl(PR_SET_MM) restrictions. - Removed the description of the tag preservation from the first patch as it didn't really make sense (the syscall ABI has always preserved all registers other than x0 on return to user). - s/ARM64/AArch64/ for consistency with the tagged-pointers.rst document. - Other minor rewordings. Vincenzo Frascino (2): arm64: Define Documentation/arm64/tagged-address-abi.rst arm64: Relax Documentation/arm64/tagged-pointers.rst Documentation/arm64/tagged-address-abi.rst | 151 +++++++++++++++++++++ Documentation/arm64/tagged-pointers.rst | 23 +++- 2 files changed, 167 insertions(+), 7 deletions(-) create mode 100644 Documentation/arm64/tagged-address-abi.rst
