diff options
| author | Martin Schwidefsky <schwidefsky@de.ibm.com> | 2011-10-30 15:16:51 +0100 |
|---|---|---|
| committer | Martin Schwidefsky <schwidefsky@de.ibm.com> | 2011-10-30 15:16:43 +0100 |
| commit | d4e81b35b882d96f059afdb0f98e5b6025973b09 (patch) | |
| tree | 5485be2f8bb0e31d153bf2b7a8bfa3bcabc457ac /arch/s390/include/asm | |
| parent | b50511e41aa51a89b4176784a670582424bc7db6 (diff) | |
[S390] allow all addressing modes
The user space program can change its addressing mode between the
24-bit, 31-bit and the 64-bit mode if the kernel is 64 bit. Currently
the kernel always forces the standard amode on signal delivery and
signal return and on ptrace: 64-bit for a 64-bit process, 31-bit for
a compat process and 31-bit kernels. Change the signal and ptrace code
to allow the full range of addressing modes. Signal handlers are
run in the standard addressing mode for the process.
One caveat is that even an 31-bit compat process can switch to the
64-bit mode. The next signal will switch back into the 31-bit mode
and there is no room in the 31-bit compat signal frame to store the
information that the program came from the 64-bit mode.
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'arch/s390/include/asm')
| -rw-r--r-- | arch/s390/include/asm/ptrace.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/s390/include/asm/ptrace.h b/arch/s390/include/asm/ptrace.h index 6fc00d268143..a65846340d51 100644 --- a/arch/s390/include/asm/ptrace.h +++ b/arch/s390/include/asm/ptrace.h @@ -269,7 +269,7 @@ typedef struct #define PSW_MASK_EA 0x0000000100000000UL #define PSW_MASK_BA 0x0000000080000000UL -#define PSW_MASK_USER 0x00003F0000000000UL +#define PSW_MASK_USER 0x00003F0180000000UL #define PSW_ADDR_AMODE 0x0000000000000000UL #define PSW_ADDR_INSN 0xFFFFFFFFFFFFFFFFUL |