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s390/mm: Remove duplicate get_lowcore() calls

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Assign the output from get_lowcore() to a local variable,
so the code is easier to read.

Acked-by: Heiko Carstens <hca@linux.ibm.com>
Signed-off-by: Sven Schnelle <svens@linux.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
This commit is contained in:
Sven Schnelle 2024-06-10 13:45:32 +02:00 committed by Vasily Gorbik
parent 15428734e1
commit 81f907b246
1 changed files with 15 additions and 13 deletions
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28
arch/s390/kernel/traps.c
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@ -288,15 +288,16 @@ static void __init test_monitor_call(void)
void __init trap_init(void)
{
struct lowcore *lc = get_lowcore();
unsigned long flags;
struct ctlreg cr0;
local_irq_save(flags);
cr0 = local_ctl_clear_bit(0, CR0_LOW_ADDRESS_PROTECTION_BIT);
psw_bits(get_lowcore()->external_new_psw).mcheck = 1;
psw_bits(get_lowcore()->program_new_psw).mcheck = 1;
psw_bits(get_lowcore()->svc_new_psw).mcheck = 1;
psw_bits(get_lowcore()->io_new_psw).mcheck = 1;
psw_bits(lc->external_new_psw).mcheck = 1;
psw_bits(lc->program_new_psw).mcheck = 1;
psw_bits(lc->svc_new_psw).mcheck = 1;
psw_bits(lc->io_new_psw).mcheck = 1;
local_ctl_load(0, &cr0);
local_irq_restore(flags);
local_mcck_enable();
@ -307,11 +308,12 @@ static void (*pgm_check_table[128])(struct pt_regs *regs);
void noinstr __do_pgm_check(struct pt_regs *regs)
{
unsigned int trapnr;
struct lowcore *lc = get_lowcore();
irqentry_state_t state;
unsigned int trapnr;
regs->int_code = get_lowcore()->pgm_int_code;
regs->int_parm_long = get_lowcore()->trans_exc_code;
regs->int_code = lc->pgm_int_code;
regs->int_parm_long = lc->trans_exc_code;
state = irqentry_enter(regs);
@ -324,19 +326,19 @@ void noinstr __do_pgm_check(struct pt_regs *regs)
current->thread.last_break = regs->last_break;
}
if (get_lowcore()->pgm_code & 0x0200) {
if (lc->pgm_code & 0x0200) {
/* transaction abort */
current->thread.trap_tdb = get_lowcore()->pgm_tdb;
current->thread.trap_tdb = lc->pgm_tdb;
}
if (get_lowcore()->pgm_code & PGM_INT_CODE_PER) {
if (lc->pgm_code & PGM_INT_CODE_PER) {
if (user_mode(regs)) {
struct per_event *ev = &current->thread.per_event;
set_thread_flag(TIF_PER_TRAP);
ev->address = get_lowcore()->per_address;
ev->cause = get_lowcore()->per_code_combined;
ev->paid = get_lowcore()->per_access_id;
ev->address = lc->per_address;
ev->cause = lc->per_code_combined;
ev->paid = lc->per_access_id;
} else {
/* PER event in kernel is kprobes */
__arch_local_irq_ssm(regs->psw.mask & ~PSW_MASK_PER);