Messages in this thread Patch in this message | | | From | Arnd Bergmann <> | Subject | [PATCH 02/15] ARM: mvebu: build coherency_ll.S for arch=armv7-a | Date | Mon, 21 Jan 2013 17:15:55 +0000 |
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In a multiplatform kernel, one can enable mach-mvebu together with one or more ARMv6 platforms, which leads to all files being built for v6. The coherency_ll.S uses the "dsb" instruction that is only available for v7, causing a build error in this case. Since the file is only used on v7 based machines, it is safe to build it using an ".arch armv7-a" statement.
Without this patch, building allyesconfig results in:
arch/arm/mach-mvebu/coherency_ll.S: Assembler messages: arch/arm/mach-mvebu/coherency_ll.S:45: Error: selected processor does not support ARM mode `dsb'
Signed-off-by: Arnd Bergmann <arnd@arndb.de> Cc: Jason Cooper <jason@lakedaemon.net> Cc: Andrew Lunn <andrew@lunn.ch> Cc: Gregory Clement <gregory.clement@free-electrons.com> --- arch/arm/mach-mvebu/coherency_ll.S | 1 + 1 file changed, 1 insertion(+)
diff --git a/arch/arm/mach-mvebu/coherency_ll.S b/arch/arm/mach-mvebu/coherency_ll.S index 53e8391..7648bda 100644 --- a/arch/arm/mach-mvebu/coherency_ll.S +++ b/arch/arm/mach-mvebu/coherency_ll.S @@ -25,6 +25,7 @@ * r0: Coherency fabric base register address * r1: HW CPU id */ + .arch armv7-a ENTRY(ll_set_cpu_coherent) /* Create bit by cpu index */ mov r3, #(1 << 24) -- 1.7.10.4
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