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| author | Mark Rutland <mark.rutland@arm.com> | 2013-07-18 16:20:32 (GMT) |
|---|---|---|
| committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2013-07-22 13:30:34 (GMT) |
| commit | b60d5db690f72a7cfe5e39f191f0719a9ef3a096 (patch) | |
| tree | 68460ed3afbca3ce216ff97636e9e91e0c3bc524 /arch | |
| parent | c65b7e98b4edce7faf534154b28eae8fb579144b (diff) | |
| download | linux-b60d5db690f72a7cfe5e39f191f0719a9ef3a096.tar.xz | |
ARM: 7786/1: hyp: fix macro parameterisation
Currently, compare_cpu_mode_with_primary uses a mixture of macro
arguments and hardcoded registers, and does so incorrectly, as it
stores (__boot_cpu_mode_offset | BOOT_CPU_MODE_MISMATCH) to
(__boot_cpu_mode + &__boot_cpu_mode_offset), which could corrupt an
arbitrary portion of memory.
This patch fixes up compare_cpu_mode_with_primary to use the macro
arguments, correctly updating __boot_cpu_mode.
Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Acked-by: Dave Martin <Dave.Martin@arm.com>
Acked-by: Marc Zyngier <marc.zyngier@arm.com>
Cc: Christoffer Dall <cdall@cs.columbia.edu>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/arm/kernel/hyp-stub.S | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/arch/arm/kernel/hyp-stub.S b/arch/arm/kernel/hyp-stub.S index 4910232..797b1a6 100644 --- a/arch/arm/kernel/hyp-stub.S +++ b/arch/arm/kernel/hyp-stub.S @@ -56,8 +56,8 @@ ENTRY(__boot_cpu_mode) ldr \reg3, [\reg2] ldr \reg1, [\reg2, \reg3] cmp \mode, \reg1 @ matches primary CPU boot mode? - orrne r7, r7, #BOOT_CPU_MODE_MISMATCH - strne r7, [r5, r6] @ record what happened and give up + orrne \reg1, \reg1, #BOOT_CPU_MODE_MISMATCH + strne \reg1, [\reg2, \reg3] @ record what happened and give up .endm #else /* ZIMAGE */ |