| Message ID | 1427321544-5150-1-git-send-email-nm@ti.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
On 03/25/2015 05:12 PM, Nishanth Menon wrote: > ARM errata 798181 is applicable for DRA7 based devices. So enable > the same in the build. 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. > > Reported-by: Praneeth Kumar Bajjuri <praneeth@ti.com> > Signed-off-by: Nishanth Menon <nm@ti.com> > --- > 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 2b8e47788062..1f78709adb05 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 > I need to drop this patch - sorry for the noise, I had missed an internal patch on the same topic.. :(
diff --git a/arch/arm/mach-omap2/Kconfig b/arch/arm/mach-omap2/Kconfig index 2b8e47788062..1f78709adb05 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
ARM errata 798181 is applicable for DRA7 based devices. So enable the same in the build. 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. Reported-by: Praneeth Kumar Bajjuri <praneeth@ti.com> Signed-off-by: Nishanth Menon <nm@ti.com> --- arch/arm/mach-omap2/Kconfig | 1 + 1 file changed, 1 insertion(+)