[BOOT-WRAPPER PATCH 0/3] Enable use of FPMR and ZT0

Mark Rutland mark.rutland at arm.com
Sun May 11 02:52:08 PDT 2025


When the kernel gained support for FEAT_FPMR and FEAT_SME2,
corresponding support was not added to the boot-wrapper. Both of these
features require some (trivial) enablement to avoid traps being taken to
EL3 durung normal operation.

These patches add the missing support to the boot-wrapper.

The first two patches were prviously posted as part of an earlier
series:

  https://lore.kernel.org/linux-arm-kernel/20241126153955.477569-1-mark.rutland@arm.com/

I've updated their commit messages for clarity, but I have made no
functional changes.

Mark.

Mark Rutland (3):
  aarch64: shuffle ID_AA64PFR{0,1}_EL1 definitions
  aarch64: Enable use of FPMR
  aarch64: Enable use of ZT0

 arch/aarch64/include/asm/cpu.h | 11 ++++++++---
 arch/aarch64/init.c            |  6 ++++++
 2 files changed, 14 insertions(+), 3 deletions(-)

-- 
2.30.2




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