parisc architecture fixes and updates for v6.18-rc1

Hi Linus,

Please pull the patches for the parisc architecture for this merge window.

Just some minor fixes & initial work on perf_events support.

Thanks!
Helge

-----------------------------

The following changes since commit e5f0a698b34ed76002dc5cff3804a61c80233a7a:

Linux 6.17 (2025-09-28 14:39:22 -0700)

are available in the Git repository at:

git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux.git tags/parisc-for-6.18-rc1

for you to fetch changes up to f4edb5c52c93b1bc676064472fb517566a3e2129:

parisc: Fix iodc and device path return values on old machines (2025-10-09 23:45:04 +0200)

----------------------------------------------------------------
parisc architecture updates for kernel v6.18-rc1:

Minor enhancements and fixes, specifically:
- report emulation and alignment faults via perf
- add initial kernel-side support for perf_events
- small initialization fixes in the parisc firmware layer
- adjust TC* constants and avoid referencing termio structs to avoid userspace build errors.

----------------------------------------------------------------
Helge Deller (5):
parisc: Report emulation faults via perf
parisc: Report software alignment faults via perf
parisc: Add initial kernel-side perf_event support
parisc: Firmware: Fix returned path for PDC_MODULE_FIND on older machines
parisc: Fix iodc and device path return values on old machines

John David Anglin (1):
parisc: Remove spurious if statement from raw_copy_from_user()

Sam James (1):
parisc: don't reference obsolete termio struct for TC* constants

 arch/parisc/Kconfig                      |  3 ++
 arch/parisc/include/asm/perf_event.h     |  8 +++-
 arch/parisc/include/uapi/asm/ioctls.h    |  8 ++--
 arch/parisc/include/uapi/asm/perf_regs.h | 63 ++++++++++++++++++++++++++++++++
 arch/parisc/kernel/Makefile              |  1 +
 arch/parisc/kernel/drivers.c             |  6 +++
 arch/parisc/kernel/firmware.c            |  3 +-
 arch/parisc/kernel/perf_event.c          | 27 ++++++++++++++
 arch/parisc/kernel/perf_regs.c           | 61 +++++++++++++++++++++++++++++++
 arch/parisc/kernel/traps.c               |  2 +
 arch/parisc/kernel/unaligned.c           |  2 +
 arch/parisc/lib/memcpy.c                 |  1 -
 12 files changed, 178 insertions(+), 7 deletions(-)
 create mode 100644 arch/parisc/include/uapi/asm/perf_regs.h
 create mode 100644 arch/parisc/kernel/perf_event.c
 create mode 100644 arch/parisc/kernel/perf_regs.c