diff options
Diffstat (limited to 'arch/powerpc/mm/fault.c')
| -rw-r--r-- | arch/powerpc/mm/fault.c | 30 |
1 files changed, 26 insertions, 4 deletions
diff --git a/arch/powerpc/mm/fault.c b/arch/powerpc/mm/fault.c index a8d0ce85d39a..eb8ecd7343a9 100644 --- a/arch/powerpc/mm/fault.c +++ b/arch/powerpc/mm/fault.c @@ -35,6 +35,7 @@ #include <linux/kfence.h> #include <linux/pkeys.h> +#include <asm/asm-prototypes.h> #include <asm/firmware.h> #include <asm/interrupt.h> #include <asm/page.h> @@ -516,10 +517,8 @@ retry: * case. */ if (unlikely(fault & VM_FAULT_RETRY)) { - if (flags & FAULT_FLAG_ALLOW_RETRY) { - flags |= FAULT_FLAG_TRIED; - goto retry; - } + flags |= FAULT_FLAG_TRIED; + goto retry; } mmap_read_unlock(current->mm); @@ -620,4 +619,27 @@ DEFINE_INTERRUPT_HANDLER(do_bad_page_fault_segv) { bad_page_fault(regs, SIGSEGV); } + +/* + * In radix, segment interrupts indicate the EA is not addressable by the + * page table geometry, so they are always sent here. + * + * In hash, this is called if do_slb_fault returns error. Typically it is + * because the EA was outside the region allowed by software. + */ +DEFINE_INTERRUPT_HANDLER(do_bad_segment_interrupt) +{ + int err = regs->result; + + if (err == -EFAULT) { + if (user_mode(regs)) + _exception(SIGSEGV, regs, SEGV_BNDERR, regs->dar); + else + bad_page_fault(regs, SIGSEGV); + } else if (err == -EINVAL) { + unrecoverable_exception(regs); + } else { + BUG(); + } +} #endif |