* Nishanth Menon <nm@xxxxxx> [150327 13:35]: > On 03/26/2015 12:35 PM, Tony Lindgren wrote: > > * Nishanth Menon <nm@xxxxxx> [150325 16:32]: > >> On 03/25/2015 06:25 PM, Praneeth Bajjuri wrote: > >>> ARM errata 798181 is applicable for OMAP5/DRA7 based devices. So enable > >>> the same in the build. > >>> > >>> DRA7xx is based on Cortex-A15 r2p2 revision. > >>> > >>> ARM Errata extract and workaround information is as below. > >>> > >>> On Cortex-A15 (r0p0..r3p2) the TLBI*IS/DSB operations are not > >>> adequately shooting down all use of the old entries. The > >>> ARM_ERRATA_798181 option enables the Linux kernel workaround > >>> for this erratum which sends an IPI to the CPUs that are running > >>> the same ASID as the one being invalidated. > >>> > >>> Signed-off-by: Praneeth Bajjuri <praneeth@xxxxxx> > >>> --- > >>> arch/arm/mach-omap2/Kconfig | 1 + > >>> 1 file changed, 1 insertion(+) > >>> > >>> diff --git a/arch/arm/mach-omap2/Kconfig b/arch/arm/mach-omap2/Kconfig > >>> index c7d8d86..3e4b4ae 100644 > >>> --- a/arch/arm/mach-omap2/Kconfig > >>> +++ b/arch/arm/mach-omap2/Kconfig > >>> @@ -69,6 +69,7 @@ config SOC_DRA7XX > >>> select ARM_GIC > >>> select HAVE_ARM_ARCH_TIMER > >>> select IRQ_CROSSBAR > >>> + select ARM_ERRATA_798181 if SMP > >>> > >>> config ARCH_OMAP2PLUS > >>> bool > >>> > >> Gee thanks and Apologies on missing this patch. > >> > >> Acked-by: Nishanth Menon <nm@xxxxxx> > >> > >> Seen on DRA7 only builds, so kinda slipped radar a bit.. verified to > >> apply on v4.0-rc1 > > > > Is this needed as a fix for v4.0-rc series or can this wait for v4.1? > I think we can wait till 4.1 OK thanks applying into omap-for-v4.1/fixes-not-urgent. Tony -- 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
