From mboxrd@z Thu Jan 1 00:00:00 1970 From: Santosh Shilimkar Subject: Re: [PATCH] ARM: OMAP5: Enable Cortex A15 errata 798181 Date: Wed, 3 Jul 2013 09:55:21 -0400 Message-ID: <51D42D49.700@ti.com> References: <1371671532-27071-1-git-send-email-santosh.shilimkar@ti.com> Mime-Version: 1.0 Content-Type: text/plain; charset="ISO-8859-1" Content-Transfer-Encoding: 7bit Return-path: Received: from arroyo.ext.ti.com ([192.94.94.40]:49383 "EHLO arroyo.ext.ti.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932128Ab3GCNz4 (ORCPT ); Wed, 3 Jul 2013 09:55:56 -0400 In-Reply-To: <1371671532-27071-1-git-send-email-santosh.shilimkar@ti.com> Sender: linux-omap-owner@vger.kernel.org List-Id: linux-omap@vger.kernel.org To: Tony Lindgren Cc: Santosh Shilimkar , linux-omap@vger.kernel.org, linux-arm-kernel@lists.infradead.org Ping.. On Wednesday 19 June 2013 03:52 PM, Santosh Shilimkar wrote: > ARM errata 798181 is applicable for OMAP5 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. > > Cc: Tony Lindgren > > Signed-off-by: Santosh Shilimkar > --- > 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 f49cd51..fbd2b9f 100644 > --- a/arch/arm/mach-omap2/Kconfig > +++ b/arch/arm/mach-omap2/Kconfig > @@ -112,6 +112,7 @@ config SOC_OMAP5 > select HAVE_SMP > select COMMON_CLK > select HAVE_ARM_ARCH_TIMER > + select ARM_ERRATA_798181 > > comment "OMAP Core Type" > depends on ARCH_OMAP2 > From mboxrd@z Thu Jan 1 00:00:00 1970 From: santosh.shilimkar@ti.com (Santosh Shilimkar) Date: Wed, 3 Jul 2013 09:55:21 -0400 Subject: [PATCH] ARM: OMAP5: Enable Cortex A15 errata 798181 In-Reply-To: <1371671532-27071-1-git-send-email-santosh.shilimkar@ti.com> References: <1371671532-27071-1-git-send-email-santosh.shilimkar@ti.com> Message-ID: <51D42D49.700@ti.com> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org Ping.. On Wednesday 19 June 2013 03:52 PM, Santosh Shilimkar wrote: > ARM errata 798181 is applicable for OMAP5 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. > > Cc: Tony Lindgren > > Signed-off-by: Santosh Shilimkar > --- > 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 f49cd51..fbd2b9f 100644 > --- a/arch/arm/mach-omap2/Kconfig > +++ b/arch/arm/mach-omap2/Kconfig > @@ -112,6 +112,7 @@ config SOC_OMAP5 > select HAVE_SMP > select COMMON_CLK > select HAVE_ARM_ARCH_TIMER > + select ARM_ERRATA_798181 > > comment "OMAP Core Type" > depends on ARCH_OMAP2 >