> -----Original Message----- > From: linux-omap-owner@xxxxxxxxxxxxxxx [mailto:linux-omap- > owner@xxxxxxxxxxxxxxx] On Behalf Of Felipe Balbi > Sent: Friday, January 07, 2011 6:30 PM > To: Santosh Shilimkar > Cc: balbi@xxxxxx; Russell King; Tony Lindgren; Linux OMAP Mailing > List; Linux ARM Kernel Mailing List > Subject: Re: Build breakage with omap2plus_defconfig > > On Fri, Jan 07, 2011 at 06:18:51PM +0530, Santosh Shilimkar wrote: > > > -----Original Message----- > > > From: linux-omap-owner@xxxxxxxxxxxxxxx [mailto:linux-omap- > > > owner@xxxxxxxxxxxxxxx] On Behalf Of Felipe Balbi > > > Sent: Friday, January 07, 2011 6:09 PM > > > To: Russell King; Tony Lindgren > > > Cc: Linux OMAP Mailing List; Linux ARM Kernel Mailing List > > > Subject: Build breakage with omap2plus_defconfig > > > > > > Hi all, > > > > > > Today's Linus' tree (01539ba2a706ab7d35fc0667dff919ade7f87d63) > fails > > > to > > > build with omap2plus_defconfig: > > > > > > $ crossmake > > > CHK include/linux/version.h > > > CHK include/generated/utsrelease.h > > > make[1]: `include/generated/mach-types.h' is up to date. > > > CALL scripts/checksyscalls.sh > > > CHK include/generated/compile.h > > > CC arch/arm/kernel/swp_emulate.o > > > /tmp/cc2V7p5j.s: Assembler messages: > > > /tmp/cc2V7p5j.s:161: Error: selected processor does not support > ARM > > > mode `ldrexb r3,[r4]' > > > /tmp/cc2V7p5j.s:162: Error: selected processor does not support > ARM > > > mode `strexb r0,r2,[r4]' > > > > Well it's not toolchain issue but the omap2plus_defconfig which > > selects ARMv6 and ARMV7 together. > > > > If you remove ARCH_OMAP2 from build, it will go through. > > I like Catalin's approach: > > diff --git a/arch/arm/mm/Kconfig b/arch/arm/mm/Kconfig > index 49db8b3..0fe2389 100644 > --- a/arch/arm/mm/Kconfig > +++ b/arch/arm/mm/Kconfig > @@ -644,7 +644,7 @@ config ARM_THUMBEE > > config SWP_EMULATE > bool "Emulate SWP/SWPB instructions" > - depends on CPU_V7 > + depends on CPU_V7 && !CPU_V6 > select HAVE_PROC_CPU if PROC_FS > default y if SMP > help > > Simple. > This patch is good but it does tell you that if you will V6 and v7 together, the feature can't be used. Like omap2plus_defconfig, and if booted on say omap3 or omap4(v7), swp emulation can't be used even though its supported. Regards, Santosh -- To unsubscribe from this list: send the line "unsubscribe linux-omap" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
