From: Nicholas Piggin <npiggin@gmail.com>
To: Benjamin Herrenschmidt <benh@kernel.crashing.org>,
Christophe Leroy <christophe.leroy@csgroup.eu>,
Michael Ellerman <mpe@ellerman.id.au>,
Paul Mackerras <paulus@samba.org>
Cc: linux-kernel@vger.kernel.org, linuxppc-dev@lists.ozlabs.org
Subject: Re: [PATCH v1 05/15] powerpc: Remove address argument from bad_page_fault()
Date: Sun, 27 Dec 2020 13:43:45 +1000 [thread overview]
Message-ID: <1609039746.005aiasorf.astroid@bobo.none> (raw)
In-Reply-To: <181cb8d6899a298e8ddab3b8f669a48c11b43cca.1608641533.git.christophe.leroy@csgroup.eu>
Excerpts from Christophe Leroy's message of December 22, 2020 11:28 pm:
> The address argument is not used by bad_page_fault().
>
> Remove it.
>
> Suggested-by: Nicholas Piggin <npiggin@gmail.com>
> Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu>
> ---
> arch/powerpc/include/asm/bug.h | 4 ++--
> arch/powerpc/kernel/entry_32.S | 4 +---
> arch/powerpc/kernel/exceptions-64e.S | 3 +--
> arch/powerpc/kernel/exceptions-64s.S | 8 +++-----
> arch/powerpc/kernel/traps.c | 2 +-
> arch/powerpc/mm/book3s64/hash_utils.c | 2 +-
> arch/powerpc/mm/book3s64/slb.c | 2 +-
> arch/powerpc/mm/fault.c | 6 +++---
> arch/powerpc/platforms/8xx/machine_check.c | 2 +-
> 9 files changed, 14 insertions(+), 19 deletions(-)
>
> diff --git a/arch/powerpc/include/asm/bug.h b/arch/powerpc/include/asm/bug.h
> index 464f8ca8a5c9..af8c164254d0 100644
> --- a/arch/powerpc/include/asm/bug.h
> +++ b/arch/powerpc/include/asm/bug.h
> @@ -112,8 +112,8 @@
>
> struct pt_regs;
> extern int do_page_fault(struct pt_regs *, unsigned long, unsigned long);
> -extern void bad_page_fault(struct pt_regs *, unsigned long, int);
> -void __bad_page_fault(struct pt_regs *regs, unsigned long address, int sig);
> +void bad_page_fault(struct pt_regs *regs, int sig);
> +void __bad_page_fault(struct pt_regs *regs, int sig);
> extern void _exception(int, struct pt_regs *, int, unsigned long);
> extern void _exception_pkey(struct pt_regs *, unsigned long, int);
> extern void die(const char *, struct pt_regs *, long);
> diff --git a/arch/powerpc/kernel/entry_32.S b/arch/powerpc/kernel/entry_32.S
> index 238eacfda7b0..abd95aebe73a 100644
> --- a/arch/powerpc/kernel/entry_32.S
> +++ b/arch/powerpc/kernel/entry_32.S
> @@ -671,15 +671,13 @@ ppc_swapcontext:
> handle_page_fault:
> addi r3,r1,STACK_FRAME_OVERHEAD
> bl do_page_fault
> - cmpwi r3,0
> + mr. r4,r3
This looks like an unrelated change so I'll leave it out. Nice little
improvement though.
Thanks,
Nick
next prev parent reply other threads:[~2020-12-27 3:44 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-12-22 13:28 [PATCH v1 00/15] powerpc/32: Reduce head complexity and re-activate MMU earlier Christophe Leroy
2020-12-22 13:28 ` [PATCH v1 01/15] powerpc/32: Fix vmap stack - Properly set r1 before activating MMU on syscall too Christophe Leroy
2020-12-22 13:28 ` [PATCH v1 02/15] powerpc/32s: Fix RTAS machine check with VMAP stack Christophe Leroy
2020-12-22 13:28 ` [PATCH v1 03/15] powerpc/32s: Only build hash code when CONFIG_PPC_BOOK3S_604 is selected Christophe Leroy
2020-12-22 13:28 ` [PATCH v1 04/15] powerpc/32s: Do DABR match out of handle_page_fault() Christophe Leroy
2020-12-22 13:28 ` [PATCH v1 05/15] powerpc: Remove address argument from bad_page_fault() Christophe Leroy
2020-12-27 3:43 ` Nicholas Piggin [this message]
2020-12-22 13:28 ` [PATCH v1 06/15] powerpc: Remove address and errorcode arguments from do_break() Christophe Leroy
2020-12-27 3:25 ` Nicholas Piggin
2021-01-11 6:57 ` Christophe Leroy
2020-12-22 13:28 ` [PATCH v1 07/15] powerpc: Remove address and errorcode arguments from do_page_fault() Christophe Leroy
2020-12-22 13:28 ` [PATCH v1 08/15] powerpc/32: Split head_32.h into head_40x.h and head_6xx_8xx.h Christophe Leroy
2020-12-22 13:28 ` [PATCH v1 09/15] powerpc/32: Preserve cr1 in exception prolog stack check Christophe Leroy
2020-12-22 13:28 ` [PATCH v1 10/15] powerpc/32: Make VMAP stack code depend on HAVE_ARCH_VMAP_STACK Christophe Leroy
2020-12-22 13:28 ` [PATCH v1 11/15] powerpc/32: Use r1 directly instead of r11 in syscall prolog Christophe Leroy
2020-12-22 13:28 ` [PATCH v1 12/15] powerpc/32: Remove msr argument in EXC_XFER_TEMPLATE() on 6xx/8xx Christophe Leroy
2020-12-22 13:28 ` [PATCH v1 13/15] powerpc/32: Enable instruction translation at the same time as data translation Christophe Leroy
2020-12-22 13:28 ` [PATCH v1 14/15] powerpc/32: Use r1 directly instead of r11 in exception prologs on 6xx/8xx Christophe Leroy
2020-12-22 13:28 ` [PATCH v1 15/15] powerpc/32: Use r11 to store DSISR in prolog Christophe Leroy
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