ARM: 8342/1: VDSO: depend on CPU_V7 · 5d38000b3c - Gogs: Go Git Service GfA electronic

ARM: 8342/1: VDSO: depend on CPU_V7

When targeting ARMv3 (e.g. rpc) and enabling CONFIG_VDSO we get:

arch/arm/vdso/datapage.S:13: Error: selected processor does not
support ARM mode `bx lr'

One fix considered was to use 'ldr pc,lr' for such configurations, but
since the VDSO is unlikely to be useful for pre-v7 hardware, just make
it depend on CONFIG_CPU_V7.

Reported-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Nathan Lynch <nathan_lynch@mentor.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

Nathan Lynch 10 years ago

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e5b61deb3a

commit

5d38000b3c

1 changed files with 1 additions and 1 deletions

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arch/arm/mm/Kconfig
							 
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				@@ -827,7 +827,7 @@ config KUSER_HELPERS
			
				 config VDSO
			
				 	bool "Enable VDSO for acceleration of some system calls"
			
				-	depends on AEABI && MMU
			
				+	depends on AEABI && MMU && CPU_V7
			
				 	default y if ARM_ARCH_TIMER
			
				 	select GENERIC_TIME_VSYSCALL
			
				 	help