[PATCH 0/5] target/arm: Fixes for RME

[Jean-Philippe Brucker]

With these patches I'm able to boot a Realm guest under
"-cpu max,x-rme=on". They are based on Peter's series which fixes
handling of NSTable:
20230714154648.327466-1-peter.maydell@linaro.org/">https://lore.kernel.org/qemu-devel/20230714154648.327466-1-peter.maydell@linaro.org/


Running a Realm guest requires components at EL3 and R-EL2. Some rough
support for TF-A and RMM is available here:
https://jpbrucker.net/git/tf-a/log/?h=qemu-rme
https://jpbrucker.net/git/rmm/log/?h=qemu-rme
I'll clean this up before sending it out.

I also need to manually disable FEAT_SME in QEMU in order to boot this,
otherwise the Linux host fails to boot because hyp-stub accesses to SME
regs are trapped to EL3, which doesn't support RME+SME at the moment.
The right fix is probably in TF-A but I haven't investigated yet.

Jean-Philippe Brucker (5):
  target/arm/ptw: Load stage-2 tables from realm physical space
  target/arm/helper: Fix vae2_tlbmask()
  target/arm: Skip granule protection checks for AT instructions
  target/arm: Pass security space rather than flag for AT instructions
  target/arm/helper: Implement CNTHCTL_EL2.CNT[VP]MASK

 target/arm/internals.h | 25 ++++++++------
 target/arm/helper.c    | 78 ++++++++++++++++++++++++++++--------------
 target/arm/ptw.c       | 19 ++++++----
 3 files changed, 79 insertions(+), 43 deletions(-)

-- 
2.41.0