When ARMv6 is enabled, we build the kernel with -march=armv6 or
-march=armv6k, which means the bfi instruction is not available.
Instead, it only works with -march=armv6t2 or -march=armv7-a.
Without this patch, building rand-enIHAOL results in:
/tmp/ccwCsCXC.s: Assembler messages:
/tmp/ccwCsCXC.s:49: Error: selected processor does not support ARM mode `bfi
r3,r2,#0,#8'
Signed-off-by: Arnd Bergmann <a...@arndb.de>
Cc: Will Deacon <will.dea...@arm.com>
Cc: Russell King <rmk+ker...@arm.linux.org.uk>
---
arch/arm/Kconfig.debug | 1 +
1 file changed, 1 insertion(+)
diff --git a/arch/arm/Kconfig.debug b/arch/arm/Kconfig.debug
index f15f82b..11b9ff4 100644
--- a/arch/arm/Kconfig.debug
+++ b/arch/arm/Kconfig.debug
@@ -398,6 +398,7 @@ config ARM_KPROBES_TEST
config PID_IN_CONTEXTIDR
bool "Write the current PID to the CONTEXTIDR register"
depends on CPU_COPY_V6
+ depends on CPU_V7 && !CPU_V6
help
Enabling this option causes the kernel to write the current PID to
the PROCID field of the CONTEXTIDR register, at the expense of some
--
1.7.10
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