diff options
Diffstat (limited to 'arch/s390/kernel/setup.c')
| -rw-r--r-- | arch/s390/kernel/setup.c | 53 |
1 files changed, 23 insertions, 30 deletions
diff --git a/arch/s390/kernel/setup.c b/arch/s390/kernel/setup.c index 6f8e3777a0c8..8ac6bfa2786c 100644 --- a/arch/s390/kernel/setup.c +++ b/arch/s390/kernel/setup.c @@ -62,11 +62,11 @@ #include <asm/kvm_virtio.h> #include <asm/diag.h> -long psw_kernel_bits = (PSW_BASE_BITS | PSW_MASK_DAT | PSW_ASC_PRIMARY | - PSW_MASK_MCHECK | PSW_DEFAULT_KEY); -long psw_user_bits = (PSW_BASE_BITS | PSW_MASK_DAT | PSW_ASC_HOME | - PSW_MASK_IO | PSW_MASK_EXT | PSW_MASK_MCHECK | - PSW_MASK_PSTATE | PSW_DEFAULT_KEY); +long psw_kernel_bits = PSW_DEFAULT_KEY | PSW_MASK_BASE | PSW_ASC_PRIMARY | + PSW_MASK_EA | PSW_MASK_BA; +long psw_user_bits = PSW_MASK_DAT | PSW_MASK_IO | PSW_MASK_EXT | + PSW_DEFAULT_KEY | PSW_MASK_BASE | PSW_MASK_MCHECK | + PSW_MASK_PSTATE | PSW_ASC_HOME; /* * User copy operations. @@ -278,22 +278,14 @@ early_param("mem", early_parse_mem); unsigned int user_mode = HOME_SPACE_MODE; EXPORT_SYMBOL_GPL(user_mode); -static int set_amode_and_uaccess(unsigned long user_amode, - unsigned long user32_amode) +static int set_amode_primary(void) { - psw_user_bits = PSW_BASE_BITS | PSW_MASK_DAT | user_amode | - PSW_MASK_IO | PSW_MASK_EXT | PSW_MASK_MCHECK | - PSW_MASK_PSTATE | PSW_DEFAULT_KEY; + psw_kernel_bits = (psw_kernel_bits & ~PSW_MASK_ASC) | PSW_ASC_HOME; + psw_user_bits = (psw_user_bits & ~PSW_MASK_ASC) | PSW_ASC_PRIMARY; #ifdef CONFIG_COMPAT - psw_user32_bits = PSW_BASE32_BITS | PSW_MASK_DAT | user_amode | - PSW_MASK_IO | PSW_MASK_EXT | PSW_MASK_MCHECK | - PSW_MASK_PSTATE | PSW_DEFAULT_KEY; - psw32_user_bits = PSW32_BASE_BITS | PSW32_MASK_DAT | user32_amode | - PSW32_MASK_IO | PSW32_MASK_EXT | PSW32_MASK_MCHECK | - PSW32_MASK_PSTATE; + psw32_user_bits = + (psw32_user_bits & ~PSW32_MASK_ASC) | PSW32_ASC_PRIMARY; #endif - psw_kernel_bits = PSW_BASE_BITS | PSW_MASK_DAT | PSW_ASC_HOME | - PSW_MASK_MCHECK | PSW_DEFAULT_KEY; if (MACHINE_HAS_MVCOS) { memcpy(&uaccess, &uaccess_mvcos_switch, sizeof(uaccess)); @@ -329,7 +321,7 @@ early_param("user_mode", early_parse_user_mode); static void setup_addressing_mode(void) { if (user_mode == PRIMARY_SPACE_MODE) { - if (set_amode_and_uaccess(PSW_ASC_PRIMARY, PSW32_ASC_PRIMARY)) + if (set_amode_primary()) pr_info("Address spaces switched, " "mvcos available\n"); else @@ -348,24 +340,25 @@ setup_lowcore(void) */ BUILD_BUG_ON(sizeof(struct _lowcore) != LC_PAGES * 4096); lc = __alloc_bootmem_low(LC_PAGES * PAGE_SIZE, LC_PAGES * PAGE_SIZE, 0); - lc->restart_psw.mask = PSW_BASE_BITS | PSW_DEFAULT_KEY; + lc->restart_psw.mask = psw_kernel_bits; lc->restart_psw.addr = PSW_ADDR_AMODE | (unsigned long) psw_restart_int_handler; - if (user_mode != HOME_SPACE_MODE) - lc->restart_psw.mask |= PSW_ASC_HOME; - lc->external_new_psw.mask = psw_kernel_bits; + lc->external_new_psw.mask = psw_kernel_bits | + PSW_MASK_DAT | PSW_MASK_MCHECK; lc->external_new_psw.addr = PSW_ADDR_AMODE | (unsigned long) ext_int_handler; - lc->svc_new_psw.mask = psw_kernel_bits | PSW_MASK_IO | PSW_MASK_EXT; + lc->svc_new_psw.mask = psw_kernel_bits | + PSW_MASK_DAT | PSW_MASK_IO | PSW_MASK_EXT | PSW_MASK_MCHECK; lc->svc_new_psw.addr = PSW_ADDR_AMODE | (unsigned long) system_call; - lc->program_new_psw.mask = psw_kernel_bits; + lc->program_new_psw.mask = psw_kernel_bits | + PSW_MASK_DAT | PSW_MASK_MCHECK; lc->program_new_psw.addr = - PSW_ADDR_AMODE | (unsigned long)pgm_check_handler; - lc->mcck_new_psw.mask = - psw_kernel_bits & ~PSW_MASK_MCHECK & ~PSW_MASK_DAT; + PSW_ADDR_AMODE | (unsigned long) pgm_check_handler; + lc->mcck_new_psw.mask = psw_kernel_bits; lc->mcck_new_psw.addr = PSW_ADDR_AMODE | (unsigned long) mcck_int_handler; - lc->io_new_psw.mask = psw_kernel_bits; + lc->io_new_psw.mask = psw_kernel_bits | + PSW_MASK_DAT | PSW_MASK_MCHECK; lc->io_new_psw.addr = PSW_ADDR_AMODE | (unsigned long) io_int_handler; lc->clock_comparator = -1ULL; lc->kernel_stack = ((unsigned long) &init_thread_union) + THREAD_SIZE; @@ -554,7 +547,7 @@ static void __init setup_restart_psw(void) * Setup restart PSW for absolute zero lowcore. This is necesary * if PSW restart is done on an offline CPU that has lowcore zero */ - psw.mask = PSW_BASE_BITS | PSW_DEFAULT_KEY; + psw.mask = PSW_DEFAULT_KEY | PSW_MASK_BASE | PSW_MASK_EA | PSW_MASK_BA; psw.addr = PSW_ADDR_AMODE | (unsigned long) psw_restart_int_handler; copy_to_absolute_zero(&S390_lowcore.restart_psw, &psw, sizeof(psw)); } |
