From: ard.biesheuvel@linaro.org (Ard Biesheuvel)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH v2 0/2] ARM: honor Thumb bit when calling procinfo setup functions
Date: Tue, 21 Apr 2015 12:59:41 +0200 [thread overview]
Message-ID: <1429613983-22739-1-git-send-email-ard.biesheuvel@linaro.org> (raw)
This addresses the observed issue where we are inadvertently relying
on the procinfo setup function to use the same instruction set as the
call site instead of using the correct annotation (patch #1) and call
sequence (patch #2)
Changes since v1:
- do not use BSYM() but ENDPROC() to ensure the functions are correctly
annotated
- use bx for all registers only when building a Thumb2 kernel
Ard Biesheuvel (2):
ARM: use ENDPROC() to annotate all v7 asm setup functions
ARM: Thumb2: use "bx reg" not "mov pc, reg" for all registers
arch/arm/include/asm/assembler.h | 2 ++
arch/arm/mm/proc-v7.S | 9 +++++++++
2 files changed, 11 insertions(+)
--
1.8.3.2
next reply other threads:[~2015-04-21 10:59 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-04-21 10:59 Ard Biesheuvel [this message]
2015-04-21 10:59 ` [PATCH v2 1/2] ARM: use ENDPROC() to annotate all v7 asm setup functions Ard Biesheuvel
2015-04-21 10:59 ` [PATCH v2 2/2] ARM: Thumb2: use "bx reg" not "mov pc, reg" for all registers Ard Biesheuvel
2015-04-21 11:15 ` Dave P Martin
2015-04-21 11:19 ` Ard Biesheuvel
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