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| author | Russell King <rmk+kernel@arm.linux.org.uk> | 2013-06-17 17:52:14 +0200 |
|---|---|---|
| committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2013-06-17 17:52:34 +0200 |
| commit | 04e71d72abec3e1a2b2ac10f96ced1a471ecb3aa (patch) | |
| tree | cca2a5ba9eb2ccbfb325660341f1741321df7690 /arch/arm/kernel/signal.c | |
| parent | ARM: 7745/1: psci: fix building without HOTPLUG_CPU (diff) | |
| parent | ARM: mpu: Ensure that MPU depends on CPU_V7 (diff) | |
| download | linux-04e71d72abec3e1a2b2ac10f96ced1a471ecb3aa.tar.xz linux-04e71d72abec3e1a2b2ac10f96ced1a471ecb3aa.zip | |
Merge branch 'ja-nommu-for-rmk-v2' of git://linux-arm.org/linux-ja into devel-stable
This includes the following series sent earlier to the list:
- nommu-fixes
- R7 Support
- MPU support
I've left out the ARCH_MULTIPLATFORM/!MMU stuff that Arnd and I were
discussing today until we've reached a conclusion/that's had some more
review.
This is rebased (and re-tested) on your devel-stable branch because
otherwise there were going to be conflicts with Uwe's V7M work now that
you've merged that. I've included the fix for limiting MPU to CPU_V7.
Diffstat (limited to 'arch/arm/kernel/signal.c')
| -rw-r--r-- | arch/arm/kernel/signal.c | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/arch/arm/kernel/signal.c b/arch/arm/kernel/signal.c index 296786bdbb73..1c16c35c271a 100644 --- a/arch/arm/kernel/signal.c +++ b/arch/arm/kernel/signal.c @@ -392,14 +392,19 @@ setup_return(struct pt_regs *regs, struct ksignal *ksig, if (ksig->ka.sa.sa_flags & SA_SIGINFO) idx += 3; + /* + * Put the sigreturn code on the stack no matter which return + * mechanism we use in order to remain ABI compliant + */ if (__put_user(sigreturn_codes[idx], rc) || __put_user(sigreturn_codes[idx+1], rc+1)) return 1; - if (cpsr & MODE32_BIT) { + if ((cpsr & MODE32_BIT) && !IS_ENABLED(CONFIG_ARM_MPU)) { /* * 32-bit code can use the new high-page - * signal return code support. + * signal return code support except when the MPU has + * protected the vectors page from PL0 */ retcode = KERN_SIGRETURN_CODE + (idx << 2) + thumb; } else { |