| Message ID | 1427325909-7014-1-git-send-email-praneeth@ti.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
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@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 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@ti.com> Seen on DRA7 only builds, so kinda slipped radar a bit.. verified to apply on v4.0-rc1
* Nishanth Menon <nm@ti.com> [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@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 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@ti.com> > > 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? Regards, Tony
On 03/26/2015 12:35 PM, Tony Lindgren wrote: > * Nishanth Menon <nm@ti.com> [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@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 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@ti.com> >> >> 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
* Nishanth Menon <nm@ti.com> [150327 13:35]: > On 03/26/2015 12:35 PM, Tony Lindgren wrote: > > * Nishanth Menon <nm@ti.com> [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@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 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@ti.com> > >> > >> 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
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
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@ti.com> --- arch/arm/mach-omap2/Kconfig | 1 + 1 file changed, 1 insertion(+)