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s390: remove arch_early_irq_init() 

Allocate early async stack like other early stacks and get rid of
arch_early_irq_init(). This way the async stack is allocated earlier,
and handled like all other stacks.

Reviewed-by: Vasily Gorbik <gor@linux.ibm.com>
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
This commit is contained in:
Heiko Carstens 2023-03-27 11:37:26 +02:00 committed by Vasily Gorbik
parent 23be82f0de
commit 60afa6d166
2 changed files with 2 additions and 12 deletions
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12
arch/s390/kernel/setup.c
View File

@ -386,17 +386,6 @@ void __init arch_call_rest_init(void)
rest_init();
}
int __init arch_early_irq_init(void)
{
unsigned long stack;
stack = __get_free_pages(GFP_KERNEL, THREAD_SIZE_ORDER);
if (!stack)
panic("Couldn't allocate async stack");
S390_lowcore.async_stack = stack + STACK_INIT_OFFSET;
return 0;
}
static unsigned long __init stack_alloc_early(void)
{
unsigned long stack;
@ -453,6 +442,7 @@ static void __init setup_lowcore(void)
*/
restart_stack = (void *)(stack_alloc_early() + STACK_INIT_OFFSET);
lc->mcck_stack = stack_alloc_early() + STACK_INIT_OFFSET;
lc->async_stack = stack_alloc_early() + STACK_INIT_OFFSET;
lc->nodat_stack = stack_alloc_early() + STACK_INIT_OFFSET;
lc->kernel_stack = S390_lowcore.kernel_stack;
/*

2
arch/s390/kernel/smp.c
View File

@ -1293,8 +1293,8 @@ int __init smp_reinit_ipl_cpu(void)
local_mcck_enable();
local_irq_restore(flags);
free_pages(lc_ipl->async_stack - STACK_INIT_OFFSET, THREAD_SIZE_ORDER);
memblock_free_late(__pa(lc_ipl->mcck_stack - STACK_INIT_OFFSET), THREAD_SIZE);
memblock_free_late(__pa(lc_ipl->async_stack - STACK_INIT_OFFSET), THREAD_SIZE);
memblock_free_late(__pa(lc_ipl->nodat_stack - STACK_INIT_OFFSET), THREAD_SIZE);
memblock_free_late(__pa(lc_ipl), sizeof(*lc_ipl));
return 0;