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 -- 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
