Messages in this thread | | | Date | Mon, 23 Nov 2015 16:13:06 -0800 | From | Stephen Boyd <> | Subject | Re: [RFC/PATCH 0/3] ARM: Use udiv/sdiv for __aeabi_{u}idiv library functions |
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On 11/23, Arnd Bergmann wrote: > > Ok, thanks for the confirmation. > > Summarizing what we've found, I think we can get away with just > introducing two Kconfig symbols ARCH_MULTI_V7VE and CPU_V7VE. > Most CPUs fall clearly into one category or the other, and then > we can allow LPAE to be selected for V7VE-only build but not > for plain V7, and we can unconditionally build the kernel with > > arch-$(CONFIG_CPU_32v7VE) = -D__LINUX_ARM_ARCH__=7 $(call cc-option,-march=armv7ve,-march=armv7-a -mcpu=cortex-a15) >
This causes compiler spew for me:
warning: switch -mcpu=cortex-a15 conflicts with -march=armv7-a switch
Removing -march=armv7-a from there makes it quiet.
Also, it's sort of feels wrong to have -mcpu in a place where we're exclusively doing -march. Perhaps the fallback should be bog standard -march=armv7-a? (or the fallback for that one "-march=armv5t -Wa$(comma)-march=armv7-a")?
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