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| author |   Christophe Leroy <christophe.leroy@csgroup.eu> | 2020-12-09 05:29:25 +0000 |
|---|---|---|
| committer |   Michael Ellerman <mpe@ellerman.id.au> | 2020-12-09 23:48:14 +1100 |
| commit | 5f1888a077069988218805534f56b983b6d5710c (patch) | |
| tree | 71256d5dd482c324023c1df2f469a358389dc12e /arch/powerpc/kernel/entry_32.S | |
| parent | powerpc/fault: Avoid heavy search_exception_tables() verification (diff) | |
| download | linux-dev-5f1888a077069988218805534f56b983b6d5710c.tar.xz linux-dev-5f1888a077069988218805534f56b983b6d5710c.zip | |
powerpc/fault: Perform exception fixup in do_page_fault()
Exception fixup doesn't require the heady full regs saving,
do it from do_page_fault() directly.
For that, split bad_page_fault() in two parts.
As bad_page_fault() can also be called from other places than
handle_page_fault(), it will still perform exception fixup and
fallback on __bad_page_fault().
handle_page_fault() directly calls __bad_page_fault() as the
exception fixup will now be done by do_page_fault()
Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu>
Reviewed-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/bd07d6fef9237614cd6d318d8f19faeeadaa816b.1607491748.git.christophe.leroy@csgroup.eu
Diffstat (limited to 'arch/powerpc/kernel/entry_32.S')
| -rw-r--r-- | arch/powerpc/kernel/entry_32.S | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/powerpc/kernel/entry_32.S b/arch/powerpc/kernel/entry_32.S index 58177c71dfd4..1c9b0ccc2172 100644 --- a/arch/powerpc/kernel/entry_32.S +++ b/arch/powerpc/kernel/entry_32.S @@ -684,7 +684,7 @@ handle_page_fault: mr r5,r3 addi r3,r1,STACK_FRAME_OVERHEAD lwz r4,_DAR(r1) - bl bad_page_fault + bl __bad_page_fault b ret_from_except_full #ifdef CONFIG_PPC_BOOK3S_32 |