* [PATCH] ARM: DRA7: Enable Cortex A15 errata 798181
@ 2015-03-25 22:12 ` Nishanth Menon
0 siblings, 0 replies; 18+ messages in thread
From: Nishanth Menon @ 2015-03-25 22:12 UTC (permalink / raw)
To: Russell King, Tony Lindgren
Cc: praneeth, linux-kernel, linux-omap, linux-arm-kernel, Nishanth Menon
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
--
1.7.9.5
^ permalink raw reply related [flat|nested] 18+ messages in thread
* [PATCH] ARM: DRA7: Enable Cortex A15 errata 798181
@ 2015-03-25 22:12 ` Nishanth Menon
0 siblings, 0 replies; 18+ messages in thread
From: Nishanth Menon @ 2015-03-25 22:12 UTC (permalink / raw)
To: linux-arm-kernel
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
--
1.7.9.5
^ permalink raw reply related [flat|nested] 18+ messages in thread
* [PATCH] ARM: DRA7: Enable Cortex A15 errata 798181
@ 2015-03-25 22:12 ` Nishanth Menon
0 siblings, 0 replies; 18+ messages in thread
From: Nishanth Menon @ 2015-03-25 22:12 UTC (permalink / raw)
To: Russell King, Tony Lindgren
Cc: praneeth, linux-kernel, linux-omap, linux-arm-kernel, Nishanth Menon
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
--
1.7.9.5
^ permalink raw reply related [flat|nested] 18+ messages in thread
* Re: [PATCH] ARM: DRA7: Enable Cortex A15 errata 798181
2015-03-25 22:12 ` Nishanth Menon
(?)
@ 2015-03-25 22:56 ` Nishanth Menon
-1 siblings, 0 replies; 18+ messages in thread
From: Nishanth Menon @ 2015-03-25 22:56 UTC (permalink / raw)
To: Russell King, Tony Lindgren
Cc: praneeth, linux-kernel, linux-omap, linux-arm-kernel
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.. :(
--
Regards,
Nishanth Menon
^ permalink raw reply [flat|nested] 18+ messages in thread
* [PATCH] ARM: DRA7: Enable Cortex A15 errata 798181
@ 2015-03-25 22:56 ` Nishanth Menon
0 siblings, 0 replies; 18+ messages in thread
From: Nishanth Menon @ 2015-03-25 22:56 UTC (permalink / raw)
To: linux-arm-kernel
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.. :(
--
Regards,
Nishanth Menon
^ permalink raw reply [flat|nested] 18+ messages in thread
* Re: [PATCH] ARM: DRA7: Enable Cortex A15 errata 798181
@ 2015-03-25 22:56 ` Nishanth Menon
0 siblings, 0 replies; 18+ messages in thread
From: Nishanth Menon @ 2015-03-25 22:56 UTC (permalink / raw)
To: Russell King, Tony Lindgren
Cc: praneeth, linux-kernel, linux-omap, linux-arm-kernel
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.. :(
--
Regards,
Nishanth Menon
^ permalink raw reply [flat|nested] 18+ messages in thread
* [PATCH] ARM: DRA7: Enable Cortex A15 errata 798181
@ 2015-03-25 23:25 ` Praneeth Bajjuri
0 siblings, 0 replies; 18+ messages in thread
From: Praneeth Bajjuri @ 2015-03-25 23:25 UTC (permalink / raw)
To: Tony Lindgren, Russell King
Cc: linux-omap, linux-arm-kernel, linux-kernel, Nishanth Menon,
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_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
--
1.7.9.5
^ permalink raw reply related [flat|nested] 18+ messages in thread
* [PATCH] ARM: DRA7: Enable Cortex A15 errata 798181
@ 2015-03-25 23:25 ` Praneeth Bajjuri
0 siblings, 0 replies; 18+ messages in thread
From: Praneeth Bajjuri @ 2015-03-25 23:25 UTC (permalink / raw)
To: linux-arm-kernel
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
--
1.7.9.5
^ permalink raw reply related [flat|nested] 18+ messages in thread
* [PATCH] ARM: DRA7: Enable Cortex A15 errata 798181
@ 2015-03-25 23:25 ` Praneeth Bajjuri
0 siblings, 0 replies; 18+ messages in thread
From: Praneeth Bajjuri @ 2015-03-25 23:25 UTC (permalink / raw)
To: Tony Lindgren, Russell King
Cc: linux-omap, linux-arm-kernel, linux-kernel, Nishanth Menon,
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_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
--
1.7.9.5
^ permalink raw reply related [flat|nested] 18+ messages in thread
* Re: [PATCH] ARM: DRA7: Enable Cortex A15 errata 798181
2015-03-25 23:25 ` Praneeth Bajjuri
(?)
@ 2015-03-25 23:32 ` Nishanth Menon
-1 siblings, 0 replies; 18+ messages in thread
From: Nishanth Menon @ 2015-03-25 23:32 UTC (permalink / raw)
To: Praneeth Bajjuri, Tony Lindgren, Russell King
Cc: linux-omap, linux-arm-kernel, linux-kernel
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
--
Regards,
Nishanth Menon
^ permalink raw reply [flat|nested] 18+ messages in thread
* [PATCH] ARM: DRA7: Enable Cortex A15 errata 798181
@ 2015-03-25 23:32 ` Nishanth Menon
0 siblings, 0 replies; 18+ messages in thread
From: Nishanth Menon @ 2015-03-25 23:32 UTC (permalink / raw)
To: linux-arm-kernel
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
--
Regards,
Nishanth Menon
^ permalink raw reply [flat|nested] 18+ messages in thread
* Re: [PATCH] ARM: DRA7: Enable Cortex A15 errata 798181
@ 2015-03-25 23:32 ` Nishanth Menon
0 siblings, 0 replies; 18+ messages in thread
From: Nishanth Menon @ 2015-03-25 23:32 UTC (permalink / raw)
To: Praneeth Bajjuri, Tony Lindgren, Russell King
Cc: linux-omap, linux-arm-kernel, linux-kernel
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
--
Regards,
Nishanth Menon
^ permalink raw reply [flat|nested] 18+ messages in thread
* Re: [PATCH] ARM: DRA7: Enable Cortex A15 errata 798181
2015-03-25 23:32 ` Nishanth Menon
@ 2015-03-26 17:35 ` Tony Lindgren
-1 siblings, 0 replies; 18+ messages in thread
From: Tony Lindgren @ 2015-03-26 17:35 UTC (permalink / raw)
To: Nishanth Menon
Cc: Praneeth Bajjuri, Russell King, linux-omap, linux-arm-kernel,
linux-kernel
* 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
^ permalink raw reply [flat|nested] 18+ messages in thread
* [PATCH] ARM: DRA7: Enable Cortex A15 errata 798181
@ 2015-03-26 17:35 ` Tony Lindgren
0 siblings, 0 replies; 18+ messages in thread
From: Tony Lindgren @ 2015-03-26 17:35 UTC (permalink / raw)
To: linux-arm-kernel
* 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
^ permalink raw reply [flat|nested] 18+ messages in thread
* Re: [PATCH] ARM: DRA7: Enable Cortex A15 errata 798181
2015-03-26 17:35 ` Tony Lindgren
@ 2015-03-27 20:35 ` Nishanth Menon
-1 siblings, 0 replies; 18+ messages in thread
From: Nishanth Menon @ 2015-03-27 20:35 UTC (permalink / raw)
To: Tony Lindgren
Cc: Praneeth Bajjuri, linux-omap, Russell King, linux-kernel,
linux-arm-kernel
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
^ permalink raw reply [flat|nested] 18+ messages in thread
* [PATCH] ARM: DRA7: Enable Cortex A15 errata 798181
@ 2015-03-27 20:35 ` Nishanth Menon
0 siblings, 0 replies; 18+ messages in thread
From: Nishanth Menon @ 2015-03-27 20:35 UTC (permalink / raw)
To: linux-arm-kernel
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
^ permalink raw reply [flat|nested] 18+ messages in thread
* Re: [PATCH] ARM: DRA7: Enable Cortex A15 errata 798181
2015-03-27 20:35 ` Nishanth Menon
@ 2015-03-27 21:38 ` Tony Lindgren
-1 siblings, 0 replies; 18+ messages in thread
From: Tony Lindgren @ 2015-03-27 21:38 UTC (permalink / raw)
To: Nishanth Menon
Cc: Praneeth Bajjuri, linux-omap, Russell King, linux-kernel,
linux-arm-kernel
* 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
^ permalink raw reply [flat|nested] 18+ messages in thread
* [PATCH] ARM: DRA7: Enable Cortex A15 errata 798181
@ 2015-03-27 21:38 ` Tony Lindgren
0 siblings, 0 replies; 18+ messages in thread
From: Tony Lindgren @ 2015-03-27 21:38 UTC (permalink / raw)
To: linux-arm-kernel
* 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
^ permalink raw reply [flat|nested] 18+ messages in thread
end of thread, other threads:[~2015-03-27 21:43 UTC | newest]
Thread overview: 18+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2015-03-25 22:12 [PATCH] ARM: DRA7: Enable Cortex A15 errata 798181 Nishanth Menon
2015-03-25 22:12 ` Nishanth Menon
2015-03-25 22:12 ` Nishanth Menon
2015-03-25 22:56 ` Nishanth Menon
2015-03-25 22:56 ` Nishanth Menon
2015-03-25 22:56 ` Nishanth Menon
2015-03-25 23:25 Praneeth Bajjuri
2015-03-25 23:25 ` Praneeth Bajjuri
2015-03-25 23:25 ` Praneeth Bajjuri
2015-03-25 23:32 ` Nishanth Menon
2015-03-25 23:32 ` Nishanth Menon
2015-03-25 23:32 ` Nishanth Menon
2015-03-26 17:35 ` Tony Lindgren
2015-03-26 17:35 ` Tony Lindgren
2015-03-27 20:35 ` Nishanth Menon
2015-03-27 20:35 ` Nishanth Menon
2015-03-27 21:38 ` Tony Lindgren
2015-03-27 21:38 ` Tony Lindgren
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