diff options
Diffstat (limited to 'arch/powerpc/kernel/paca.c')
| -rw-r--r-- | arch/powerpc/kernel/paca.c | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/arch/powerpc/kernel/paca.c b/arch/powerpc/kernel/paca.c index dfc479df9634..8d63627e067f 100644 --- a/arch/powerpc/kernel/paca.c +++ b/arch/powerpc/kernel/paca.c @@ -245,3 +245,24 @@ void __init free_unused_pacas(void) free_lppacas(); } + +void copy_mm_to_paca(struct mm_struct *mm) +{ +#ifdef CONFIG_PPC_BOOK3S + mm_context_t *context = &mm->context; + + get_paca()->mm_ctx_id = context->id; +#ifdef CONFIG_PPC_MM_SLICES + VM_BUG_ON(!mm->context.addr_limit); + get_paca()->addr_limit = mm->context.addr_limit; + get_paca()->mm_ctx_low_slices_psize = context->low_slices_psize; + memcpy(&get_paca()->mm_ctx_high_slices_psize, + &context->high_slices_psize, TASK_SLICE_ARRAY_SZ(mm)); +#else /* CONFIG_PPC_MM_SLICES */ + get_paca()->mm_ctx_user_psize = context->user_psize; + get_paca()->mm_ctx_sllp = context->sllp; +#endif +#else /* CONFIG_PPC_BOOK3S */ + return; +#endif +} |