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powerpc/mm: Remove stale do_page_fault comment referring to SLB faults

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SLB faults no longer call do_page_fault, this was removed somewhere
between 2.6.0 and 2.6.12.

Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20210130130852.2952424-17-npiggin@gmail.com
This commit is contained in:
Nicholas Piggin 2021-01-30 23:08:26 +10:00 committed by Michael Ellerman
parent bf0e2374aa
commit 31d6490ccb
1 changed files with 5 additions and 7 deletions
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12
arch/powerpc/mm/fault.c
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@ -377,13 +377,11 @@ static void sanity_check_fault(bool is_write, bool is_user,
/*
* For 600- and 800-family processors, the error_code parameter is DSISR
* for a data fault, SRR1 for an instruction fault. For 400-family processors
* the error_code parameter is ESR for a data fault, 0 for an instruction
* fault.
* For 64-bit processors, the error_code parameter is
* - DSISR for a non-SLB data access fault,
* - SRR1 & 0x08000000 for a non-SLB instruction access fault
* - 0 any SLB fault.
* for a data fault, SRR1 for an instruction fault.
* For 400-family processors the error_code parameter is ESR for a data fault,
* 0 for an instruction fault.
* For 64-bit processors, the error_code parameter is DSISR for a data access
* fault, SRR1 & 0x08000000 for an instruction access fault.
*
* The return value is 0 if the fault was handled, or the signal
* number if this is a kernel fault that can't be handled here.