[PATCH v3 0/6] target/arm: Fixes for RME

[Jean-Philippe Brucker <jean-philippe@linaro.org>]

A few patches to fix RME support and allow booting a realm guest, based
on "[PATCH v2 00/15] target/arm/ptw: Cleanups and a few bugfixes"
https://lore.kernel.org/all/20230807141514.19075-1-peter.maydell@linaro.org/

Since v2:

* Updated the comment in patch 5. I also removed the check for FEAT_RME,
  because as pointed out in "target/arm: Catch illegal-exception-return
  from EL3 with bad NSE/NS", the SCR_NSE bit can only be set with
  FEAT_RME enabled. Because of this additional change, I didn't add the
  Reviewed-by.

* Added an EL-change hook to patch 6, to update the timer IRQ
  when changing the security state. I was wondering whether the
  el_change function should filter security state changes, since we only
  need to update IRQ state when switching between Root and
  Secure/NonSecure. But with a small syscall benchmark exercising
  EL0-EL1 switch with FEAT_RME enabled, I couldn't see any difference
  with and without the el_change hook, so I kept it simple.

* Also added the .raw_write callback for CNTHCTL_EL2.

v2: https://lore.kernel.org/all/20230802170157.401491-1-jean-philippe@linaro.org/

Jean-Philippe Brucker (6):
  target/arm/ptw: Load stage-2 tables from realm physical space
  target/arm/helper: Fix tlbmask and tlbbits for TLBI VAE2*
  target/arm: Skip granule protection checks for AT instructions
  target/arm: Pass security space rather than flag for AT instructions
  target/arm/helper: Check SCR_EL3.{NSE,NS} encoding for AT instructions
  target/arm/helper: Implement CNTHCTL_EL2.CNT[VP]MASK

 target/arm/cpu.h        |   4 +
 target/arm/internals.h  |  25 +++---
 target/arm/cpu.c        |   4 +
 target/arm/helper.c     | 184 ++++++++++++++++++++++++++++++----------
 target/arm/ptw.c        |  39 ++++++---
 target/arm/trace-events |   7 +-
 6 files changed, 188 insertions(+), 75 deletions(-)

-- 
2.41.0