s390/acrs: cleanup access register handling

Browse source

save_access_regs() and restore_access_regs() are only available by
including switch_to.h. This is done by a couple of C files, which have
nothing to do with switch_to(), but only need these functions.

Move both functions to a new header file and improve the implementation:

- Get rid of typedef

- Add memory access instrumentation support

- Use long displacement instructions lamy/stamy instead of lam/stam - all
  current users end up with better code because of this

Reviewed-by: Alexander Gordeev <agordeev@linux.ibm.com>
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>

...

This commit is contained in:

Heiko Carstens 2024-02-05 21:32:12 +01:00

parent f78bcb2e26

commit 304103736b

10 changed files with 48 additions and 21 deletions

Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL

Download patch file Download diff file Expand all files Collapse all files

38

arch/s390/include/asm/access-regs.h

View file

15

arch/s390/include/asm/switch_to.h

View file

2

arch/s390/kernel/compat_signal.c

View file

3

arch/s390/kernel/early.c

View file

1

arch/s390/kernel/ptrace.c

View file

2

arch/s390/kernel/signal.c

View file

2

arch/s390/kernel/smp.c

View file

2

arch/s390/kvm/gaccess.c

View file

2

arch/s390/kvm/interrupt.c

View file

2

arch/s390/kvm/kvm-s390.c

View file