RE: [PATCH 3/5] ARM: l2x0: Errata fix for flush by Way operation can cause data corruption

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



> -----Original Message-----
> From: catalin.marinas@xxxxxxxxx [mailto:catalin.marinas@xxxxxxxxx]
> On Behalf Of Catalin Marinas
> Sent: Wednesday, February 16, 2011 9:24 PM
> To: Santosh Shilimkar
> Cc: linux-arm-kernel@xxxxxxxxxxxxxxxxxxx; Andrei Warkentin; Kevin
> Hilman; tony@xxxxxxxxxxx; linux-omap@xxxxxxxxxxxxxxx
> Subject: Re: [PATCH 3/5] ARM: l2x0: Errata fix for flush by Way
> operation can cause data corruption
>
> On 15 February 2011 07:14, Santosh Shilimkar
> <santosh.shilimkar@xxxxxx> wrote:
> > --- a/arch/arm/Kconfig
> > +++ b/arch/arm/Kconfig
> > @@ -1140,7 +1140,7 @@ config ARM_ERRATA_742231
> >
> >  config PL310_ERRATA_588369
> >        bool "Clean & Invalidate maintenance operations do not
> invalidate
> > clean lines"
> > -       depends on CACHE_L2X0 && ARCH_OMAP4
> > +       depends on CACHE_L2X0 && CACHE_PL310
>
> It can just depend on CACHE_PL310 as this depends on CACHE_L2X0.
>
Ok.
> > +config PL310_ERRATA_727915
> > +       bool "Background Clean & Invalidate by Way operation can
> cause
> > data corruption"
> > +       depends on CACHE_L2X0 && CACHE_PL310
>
> Same here.
>
> > --- a/arch/arm/mach-omap2/Kconfig
> > +++ b/arch/arm/mach-omap2/Kconfig
> > @@ -45,7 +45,10 @@ config ARCH_OMAP4
> >        select CPU_V7
> >        select ARM_GIC
> >        select LOCAL_TIMERS
> > +       select CACHE_L2X0
>
> CACHE_L2X0 has a long dependency list. You could add ARCH_OMAP4 in
> there or just change the other platforms to select a
> HAVE_CACHE_L2X0.
> Ideally we would like this option to be selectable in config just in
> case you want to debug some issues.
>
I will add ARCH_OMAP4 under CACHE_L2X0.

> > --- a/arch/arm/mach-omap2/omap4-common.c
> > +++ b/arch/arm/mach-omap2/omap4-common.c
> > @@ -52,6 +52,12 @@ static void omap4_l2x0_disable(void)
> >        omap_smc1(0x102, 0x0);
> >  }
> >
> > +static void omap4_l2x0_set_debug(unsigned long val)
> > +{
> > +       /* Program PL310 L2 Cache controller debug register */
> > +       omap_smc1(0x100, val);
> > +}
>
> This part together with the Kconfig changes for OMAP4 could be a
> separate patch, OMAP-specific.
>
Agree. I will split this patch and repost.

> The rest seems fine.

Thanks for the feedback.

Regards,
Santosh
--
To unsubscribe from this list: send the line "unsubscribe linux-omap" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html


[Index of Archives]     [Linux Arm (vger)]     [ARM Kernel]     [ARM MSM]     [Linux Tegra]     [Linux WPAN Networking]     [Linux Wireless Networking]     [Maemo Users]     [Linux USB Devel]     [Video for Linux]     [Linux Audio Users]     [Yosemite Trails]     [Linux Kernel]     [Linux SCSI]

  Powered by Linux