> -----Original Message----- > From: Dave Martin [mailto:dave.martin@xxxxxxxxxx] > Sent: Thursday, December 09, 2010 5:30 PM > To: linux-arm-kernel@xxxxxxxxxxxxxxxxxxx > Cc: Dave Martin; Santosh Shilimkar; linux-omap@xxxxxxxxxxxxxxx > Subject: [PATCH 1/2] ARM: Thumb-2: Make CONFIG_THUMB2_KERNEL depend > on !CPU_V6 > > This makes sense, because Thumb-2 code can't execute on plain > ARMv6 processors. > > This will avoid accidentally configuring a broken kernel where the > config otherwise would allow multiple architecture versions to > coexist in the same kernel. > > Not adding !CPU_V5 etc., because the chance of anyone trying to > put v5 and v7 in the same kernel is low, and I'm not aware of > any mach which can do this. These could be added later if it > matters. > > Note that the rules may need to be refined if support for the > ARM1156J(F)-S processor is later added to the kernel, since this > processor supports the rare ARMv6T2 extensions, which add support > for Thumb-2 and a few other ARMv7 features. > > Signed-off-by: Dave Martin <dave.martin@xxxxxxxxxx> > Acked-by: Catalin Marinas <catalin.marinas@xxxxxxx> If you like, Acked-by: Santosh Shilimkar <santosh.shilimkar@xxxxxx> > --- > arch/arm/Kconfig | 2 +- > 1 files changed, 1 insertions(+), 1 deletions(-) > > diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig > index db524e7..f9ca7f3 100644 > --- a/arch/arm/Kconfig > +++ b/arch/arm/Kconfig > @@ -1311,7 +1311,7 @@ config HZ > > config THUMB2_KERNEL > bool "Compile the kernel in Thumb-2 mode" > - depends on CPU_V7 && EXPERIMENTAL > + depends on CPU_V7 && !CPU_V6 && EXPERIMENTAL > select AEABI > select ARM_ASM_UNIFIED > help > -- > 1.7.1 -- 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
