ARM: DRA7: Enable Cortex A15 errata 798181
Subsystems (3)
PATCH 1/1 ARM: DRA7: Enable Cortex A15 errata 798181
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.
--- arch/arm/mach-omap2/Kconfig | 1 + 1 file changed, 1 insertion(+)
arch/arm/mach-omap2/Kconfig +1 -0
@@ -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
Signature · 1 line
1.7.9.5
Quoted 24 lines · Praneeth Bajjuri
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_798181option 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 <[email protected]>--- arch/arm/mach-omap2/Kconfig | 1 + 1 file changed, 1 insertion(+)arch/arm/mach-omap2/Kconfig +0
-0
arch/arm/mach-omap2/Kconfig config SOC_DRA7XX · line 75
Quoted 7 lines
arch/arm/mach-omap2/Kconfig +1
-0@@ -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.
Seen on DRA7 only builds, so kinda slipped radar a bit.. verified to apply on v4.0-rc1
Signature · 2 lines
Regards, Nishanth Menon
Tony Lindgren
maintainerQuoted 34 lines · Nishanth Menon
Quoted 24 lines · Praneeth Bajjuri
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_798181option 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 <[email protected]>--- arch/arm/mach-omap2/Kconfig | 1 + 1 file changed, 1 insertion(+)arch/arm/mach-omap2/Kconfig +0
-0arch/arm/mach-omap2/Kconfig config SOC_DRA7XX · line 75
Quoted 7 lines
arch/arm/mach-omap2/Kconfig +1
-0@@ -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 boolGee thanks and Apologies on missing this patch.
Quoted 4 lines
Acked-by Nishanth Menon <[email protected]>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
Quoted 35 lines · Tony Lindgren
Quoted 34 lines · Nishanth Menon
Quoted 24 lines · Praneeth Bajjuri
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_798181option 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 <[email protected]>--- arch/arm/mach-omap2/Kconfig | 1 + 1 file changed, 1 insertion(+)arch/arm/mach-omap2/Kconfig +0
-0arch/arm/mach-omap2/Kconfig config SOC_DRA7XX · line 75
Quoted 7 lines
arch/arm/mach-omap2/Kconfig +1
-0@@ -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 boolGee thanks and Apologies on missing this patch.
Quoted 6 lines
Quoted 4 lines
Acked-by Nishanth Menon <[email protected]>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
Tony Lindgren
maintainerQuoted 36 lines · Nishanth Menon
Quoted 35 lines · Tony Lindgren
Quoted 34 lines · Nishanth Menon
Quoted 24 lines · Praneeth Bajjuri
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_798181option 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 <[email protected]>--- arch/arm/mach-omap2/Kconfig | 1 + 1 file changed, 1 insertion(+)arch/arm/mach-omap2/Kconfig +0
-0arch/arm/mach-omap2/Kconfig config SOC_DRA7XX · line 75
Quoted 7 lines
arch/arm/mach-omap2/Kconfig +1
-0@@ -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 boolGee thanks and Apologies on missing this patch.
Quoted 7 lines
Quoted 6 lines
Quoted 4 lines
Acked-by Nishanth Menon <[email protected]>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