diff options
author | Martin Schwidefsky <schwidefsky@de.ibm.com> | 2011-10-30 14:16:50 (GMT) |
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committer | Martin Schwidefsky <schwidefsky@de.ibm.com> | 2011-10-30 14:16:43 (GMT) |
commit | b50511e41aa51a89b4176784a670582424bc7db6 (patch) | |
tree | 0ad1553c7f2431878310e590187ee59ccb4d8cab /arch/s390/include/asm/processor.h | |
parent | b6ef5bb3d93efb95ba855a628740375c2280a59e (diff) | |
download | linux-b50511e41aa51a89b4176784a670582424bc7db6.tar.xz |
[S390] cleanup psw related bits and pieces
Split out addressing mode bits from PSW_BASE_BITS, rename PSW_BASE_BITS
to PSW_MASK_BASE, get rid of psw_user32_bits, remove unused function
enabled_wait(), introduce PSW_MASK_USER, and drop PSW_MASK_MERGE macros.
Change psw_kernel_bits / psw_user_bits to contain only the bits that
are always set in the respective mode.
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'arch/s390/include/asm/processor.h')
-rw-r--r-- | arch/s390/include/asm/processor.h | 30 |
1 files changed, 10 insertions, 20 deletions
diff --git a/arch/s390/include/asm/processor.h b/arch/s390/include/asm/processor.h index 306c93c..20ffb12 100644 --- a/arch/s390/include/asm/processor.h +++ b/arch/s390/include/asm/processor.h @@ -118,17 +118,17 @@ struct stack_frame { /* * Do necessary setup to start up a new thread. */ -#define start_thread(regs, new_psw, new_stackp) do { \ - regs->psw.mask = psw_user_bits; \ - regs->psw.addr = new_psw | PSW_ADDR_AMODE; \ - regs->gprs[15] = new_stackp; \ +#define start_thread(regs, new_psw, new_stackp) do { \ + regs->psw.mask = psw_user_bits | PSW_MASK_EA | PSW_MASK_BA; \ + regs->psw.addr = new_psw | PSW_ADDR_AMODE; \ + regs->gprs[15] = new_stackp; \ } while (0) -#define start_thread31(regs, new_psw, new_stackp) do { \ - regs->psw.mask = psw_user32_bits; \ - regs->psw.addr = new_psw | PSW_ADDR_AMODE; \ - regs->gprs[15] = new_stackp; \ - crst_table_downgrade(current->mm, 1UL << 31); \ +#define start_thread31(regs, new_psw, new_stackp) do { \ + regs->psw.mask = psw_user_bits | PSW_MASK_BA; \ + regs->psw.addr = new_psw | PSW_ADDR_AMODE; \ + regs->gprs[15] = new_stackp; \ + crst_table_downgrade(current->mm, 1UL << 31); \ } while (0) /* Forward declaration, a strange C thing */ @@ -234,24 +234,14 @@ static inline unsigned long __rewind_psw(psw_t psw, unsigned long ilc) } /* - * Function to stop a processor until an interruption occurred - */ -static inline void enabled_wait(void) -{ - __load_psw_mask(PSW_BASE_BITS | PSW_MASK_IO | PSW_MASK_EXT | - PSW_MASK_MCHECK | PSW_MASK_WAIT | PSW_DEFAULT_KEY); -} - -/* * Function to drop a processor into disabled wait state */ - static inline void ATTRIB_NORET disabled_wait(unsigned long code) { unsigned long ctl_buf; psw_t dw_psw; - dw_psw.mask = PSW_BASE_BITS | PSW_MASK_WAIT; + dw_psw.mask = PSW_MASK_BASE | PSW_MASK_WAIT | PSW_MASK_BA | PSW_MASK_EA; dw_psw.addr = code; /* * Store status and then load disabled wait psw, |