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| author |   Nicholas Piggin <npiggin@gmail.com> | 2021-01-30 23:08:16 +1000 |
|---|---|---|
| committer |   Michael Ellerman <mpe@ellerman.id.au> | 2021-02-09 00:02:08 +1100 |
| commit | a01a3f2ddbcda83e8572787c0ec1dcbeba86915a (patch) | |
| tree | 497891fcc997665e9e4d57cc6cf8fdf19c5bf72a /arch/powerpc/mm/book3s64/slb.c | |
| parent | powerpc/64s: move the hash fault handling logic to C (diff) | |
| download | wireguard-linux-a01a3f2ddbcda83e8572787c0ec1dcbeba86915a.tar.xz wireguard-linux-a01a3f2ddbcda83e8572787c0ec1dcbeba86915a.zip | |
powerpc: remove arguments from fault handler functions
Make mm fault handlers all just take the pt_regs * argument and load
DAR/DSISR from that. Make those that return a value return long.
This is done to make the function signatures match other handlers, which
will help with a future patch to add wrappers. Explicit arguments could
be added for performance but that would require more wrapper macro
variants.
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20210130130852.2952424-7-npiggin@gmail.com
Diffstat (limited to 'arch/powerpc/mm/book3s64/slb.c')
| -rw-r--r-- | arch/powerpc/mm/book3s64/slb.c | 11 |
1 files changed, 7 insertions, 4 deletions
diff --git a/arch/powerpc/mm/book3s64/slb.c b/arch/powerpc/mm/book3s64/slb.c index 584567970c11..985902ce0272 100644 --- a/arch/powerpc/mm/book3s64/slb.c +++ b/arch/powerpc/mm/book3s64/slb.c @@ -813,8 +813,9 @@ static long slb_allocate_user(struct mm_struct *mm, unsigned long ea) return slb_insert_entry(ea, context, flags, ssize, false); } -long do_slb_fault(struct pt_regs *regs, unsigned long ea) +long do_slb_fault(struct pt_regs *regs) { + unsigned long ea = regs->dar; unsigned long id = get_region_id(ea); /* IRQs are not reconciled here, so can't check irqs_disabled */ @@ -865,13 +866,15 @@ long do_slb_fault(struct pt_regs *regs, unsigned long ea) } } -void do_bad_slb_fault(struct pt_regs *regs, unsigned long ea, long err) +void do_bad_slb_fault(struct pt_regs *regs) { + int err = regs->result; + if (err == -EFAULT) { if (user_mode(regs)) - _exception(SIGSEGV, regs, SEGV_BNDERR, ea); + _exception(SIGSEGV, regs, SEGV_BNDERR, regs->dar); else - bad_page_fault(regs, ea, SIGSEGV); + bad_page_fault(regs, regs->dar, SIGSEGV); } else if (err == -EINVAL) { unrecoverable_exception(regs); } else { |