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| author | Nicholas Piggin <npiggin@gmail.com> | 2021-03-16 20:42:02 +1000 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2021-04-14 23:04:43 +1000 |
| commit | d738ee8d56de38c91610741f672ec5c1ffae76fc (patch) | |
| tree | 79fa84d930a84cea7357e51700a3fa1695033f01 | |
| parent | ceff77efa4f8d9f02d8442171b325d3b7068fe5e (diff) | |
| download | linux-d738ee8d56de38c91610741f672ec5c1ffae76fc.tar.gz linux-d738ee8d56de38c91610741f672ec5c1ffae76fc.tar.bz2 linux-d738ee8d56de38c91610741f672ec5c1ffae76fc.zip | |
powerpc/64e/interrupt: handle bad_page_fault in C
With non-volatile registers saved on interrupt, bad_page_fault
can now be called by do_page_fault.
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20210316104206.407354-9-npiggin@gmail.com
| -rw-r--r-- | arch/powerpc/kernel/exceptions-64e.S | 6 | ||||
| -rw-r--r-- | arch/powerpc/mm/fault.c | 5 |
2 files changed, 1 insertions, 10 deletions
diff --git a/arch/powerpc/kernel/exceptions-64e.S b/arch/powerpc/kernel/exceptions-64e.S index 3c222a97f023..7c3654b0d0f4 100644 --- a/arch/powerpc/kernel/exceptions-64e.S +++ b/arch/powerpc/kernel/exceptions-64e.S @@ -937,12 +937,6 @@ storage_fault_common: ld r14,PACA_EXGEN+EX_R14(r13) ld r15,PACA_EXGEN+EX_R15(r13) bl do_page_fault - cmpdi r3,0 - bne- 1f - b interrupt_return - mr r4,r3 - addi r3,r1,STACK_FRAME_OVERHEAD - bl __bad_page_fault b interrupt_return /* diff --git a/arch/powerpc/mm/fault.c b/arch/powerpc/mm/fault.c index 0c0b1c2cfb49..18e588fda43d 100644 --- a/arch/powerpc/mm/fault.c +++ b/arch/powerpc/mm/fault.c @@ -552,12 +552,9 @@ static long __do_page_fault(struct pt_regs *regs) if (likely(entry)) { instruction_pointer_set(regs, extable_fixup(entry)); return 0; - } else if (!IS_ENABLED(CONFIG_PPC_BOOK3E_64)) { + } else { __bad_page_fault(regs, err); return 0; - } else { - /* 32 and 64e handle the bad page fault in asm */ - return err; } } NOKPROBE_SYMBOL(__do_page_fault); |