kernel-hacking-2024-linux-s.../arch/s390/lib
Martin Schwidefsky b11b533427 [S390] Improve address space mode selection.
Introduce user_mode to replace the two variables switch_amode and
s390_noexec. There are three valid combinations of the old values:
  1) switch_amode == 0 && s390_noexec == 0
  2) switch_amode == 1 && s390_noexec == 0
  3) switch_amode == 1 && s390_noexec == 1
They get replaced by
  1) user_mode == HOME_SPACE_MODE
  2) user_mode == PRIMARY_SPACE_MODE
  3) user_mode == SECONDARY_SPACE_MODE
The new kernel parameter user_mode=[primary,secondary,home] lets
you choose the address space mode the user space processes should
use. In addition the CONFIG_S390_SWITCH_AMODE config option
is removed.

Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2009-12-07 12:51:33 +01:00
..
delay.c [S390] Provide arch specific mdelay implementation. 2009-10-06 10:35:08 +02:00
div64.c
Makefile [S390] add __ucmpdi2() helper function 2009-07-07 16:37:53 +02:00
qrnnd.S
spinlock.c
string.c
uaccess.h
uaccess_mvcos.c [S390] Improve address space mode selection. 2009-12-07 12:51:33 +01:00
uaccess_pt.c
uaccess_std.c [S390] Add EX_TABLE for addressing exception in usercopy functions. 2009-10-06 10:35:10 +02:00
ucmpdi2.c [S390] add __ucmpdi2() helper function 2009-07-07 16:37:53 +02:00