From: Christophe Leroy <christophe.leroy@csgroup.eu>
To: Benjamin Herrenschmidt <benh@kernel.crashing.org>,
Paul Mackerras <paulus@samba.org>,
Michael Ellerman <mpe@ellerman.id.au>
Cc: "linuxppc-dev@lists.ozlabs.org" <linuxppc-dev@lists.ozlabs.org>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH v1 06/11] powerpc/code-patching: Fix patch_branch() return on out-of-range failure
Date: Wed, 22 Dec 2021 13:16:06 +0000 [thread overview]
Message-ID: <f08d7495-0e6d-f66e-9cc1-1ef0906d050d@csgroup.eu> (raw)
In-Reply-To: <8540cb64b1f06710eaf41e3835c7ba3e21fa2b05.1638446239.git.christophe.leroy@csgroup.eu>
Le 02/12/2021 à 13:00, Christophe Leroy a écrit :
> Do not silentely ignore a failure of create_branch() in
> patch_branch(). Return -ERANGE.
>
> Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu>
From
https://patchwork.ozlabs.org/project/linuxppc-dev/patch/4940b03de220d1dfe2c6b47a41e60925497ce125.1630657331.git.christophe.leroy@csgroup.eu/
Reviewed-by: Naveen N. Rao <naveen.n.rao@linux.vnet.ibm.com>
> ---
> arch/powerpc/lib/code-patching.c | 4 +++-
> 1 file changed, 3 insertions(+), 1 deletion(-)
>
> diff --git a/arch/powerpc/lib/code-patching.c b/arch/powerpc/lib/code-patching.c
> index a43ca22313ee..e7a2a41ae8eb 100644
> --- a/arch/powerpc/lib/code-patching.c
> +++ b/arch/powerpc/lib/code-patching.c
> @@ -191,7 +191,9 @@ int patch_branch(u32 *addr, unsigned long target, int flags)
> {
> ppc_inst_t instr;
>
> - create_branch(&instr, addr, target, flags);
> + if (create_branch(&instr, addr, target, flags))
> + return -ERANGE;
> +
> return patch_instruction(addr, instr);
> }
>
>
next prev parent reply other threads:[~2021-12-22 13:17 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-12-02 12:00 [PATCH v1 01/11] powerpc/code-patching: Remove pr_debug()/pr_devel() messages and fix check() Christophe Leroy
2021-12-02 12:00 ` [PATCH v1 02/11] powerpc/code-patching: Remove init_mem_is_free Christophe Leroy
2021-12-02 12:00 ` [PATCH v1 03/11] powerpc/code-patching: Fix error handling in do_patch_instruction() Christophe Leroy
2021-12-02 12:00 ` [PATCH v1 04/11] powerpc/code-patching: Fix unmap_patch_area() error handling Christophe Leroy
2021-12-02 12:00 ` [PATCH v1 05/11] powerpc/code-patching: Reorganise do_patch_instruction() to ease " Christophe Leroy
2021-12-02 12:00 ` [PATCH v1 06/11] powerpc/code-patching: Fix patch_branch() return on out-of-range failure Christophe Leroy
2021-12-22 13:16 ` Christophe Leroy [this message]
2021-12-02 12:00 ` [PATCH v1 07/11] powerpc/code-patching: Use test_trampoline for prefixed patch test Christophe Leroy
2021-12-02 12:00 ` [PATCH v1 08/11] powerpc/code-patching: Move patch_exception() outside code-patching.c Christophe Leroy
2021-12-02 12:00 ` [PATCH v1 09/11] powerpc/code-patching: Move instr_is_branch_{i/b}form() in code-patching.h Christophe Leroy
2021-12-02 12:00 ` [PATCH v1 10/11] powerpc/code-patching: Move code patching selftests in its own file Christophe Leroy
2021-12-02 12:00 ` [PATCH v1 11/11] powerpc/code-patching: Replace patch_instruction() by ppc_inst_write() in selftests Christophe Leroy
2021-12-26 21:52 ` [PATCH v1 01/11] powerpc/code-patching: Remove pr_debug()/pr_devel() messages and fix check() Michael Ellerman
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