From: Dave Olson <olson@cumulusnetworks•com>
To: Michael Ellerman <mpe@ellerman•id.au>
Cc: Paul Mackerras <paulus@samba•org>, linuxppc-dev@lists•ozlabs.org
Subject: Re: [PATCH 1/1] powerpc: fix missing L2 cache size in /sys/devices/system/cpu
Date: Mon, 9 Feb 2015 15:43:51 -0800 [thread overview]
Message-ID: <20150209234351.GC22286@cumulusnetworks.com> (raw)
In-Reply-To: <1423524827.19657.1.camel@ellerman.id.au>
Michael Ellerman <mpe@ellerman•id.au> wrote:
> On Mon, 2015-02-09 at 14:14 -0800, Dave Olson wrote:
> > From: Dave Olson <olson@cumulusnetworks•com>
> >
> > Fix missing L2 cache size in /sys/devices/system/cpu/cpu0/cache/index2/size
> > This bug appears to be introduced in 2.6.29 by 93197a36a9c16a85fb24cf5a8639f7bf9af838a3.
> > The missing entry caused lscpu to error out on e500v2 devices, and probably others
> > error: cannot open /sys/devices/system/cpu/cpu0/cache/index2/size: No such file or directory
> > The DTS files we see use cache-size for the unified L2 cache size, not d-cache-size
>
> Can you convince me that this is not going to break other machines that have
> "d-cache-size" but not "cache-size"?
I'm unable to find any dts file that uses d-cache-size for the L2
unified cache. All in the powerpc tree in arch/powerpc/boot/dts/*
are using cache-size in the L2 description for the cache size.
As best as I can tell from looking around, this is universal.
Dave Olson
olson@cumulusnetworks•com
next prev parent reply other threads:[~2015-02-09 23:43 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-02-09 22:14 [PATCH 1/1] powerpc: fix missing L2 cache size in /sys/devices/system/cpu Dave Olson
2015-02-09 23:33 ` Michael Ellerman
2015-02-09 23:43 ` Dave Olson [this message]
2015-02-10 0:12 ` Benjamin Herrenschmidt
2015-02-10 3:30 ` Michael Ellerman
2015-02-10 8:00 ` Dave Olson
2015-02-10 8:14 ` Benjamin Herrenschmidt
2015-02-10 16:55 ` Dave Olson
2015-02-10 19:45 ` Benjamin Herrenschmidt
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