From: Benjamin Herrenschmidt <benh@au1.ibm.com>
To: pc@us.ibm.com, linuxppc-dev@lists.ozlabs.org
Subject: Re: [PATCH v2] powerpc: A new cache geometry aux vectors
Date: Mon, 06 Mar 2017 10:11:41 +1100 [thread overview]
Message-ID: <1488755501.2870.119.camel@au1.ibm.com> (raw)
In-Reply-To: <288deec2-a821-316b-5e53-e186deda96f9@us.ibm.com>
On Fri, 2017-03-03 at 07:51 -0600, Paul Clarke wrote:
> > On P9 it all comes from the device tree so if that's wrong the AUX
> > vectors will definitely be wrong.
>
> mambo-p9 is still falling victim to the device-tree, but "working":
> --
> getauxval(AT_L1I_CACHEGEOMETRY) = 0x0000000000000080
> AT_L1I_CACHEGEOMETRY: associativity 0; line size 128
> getauxval(AT_L1D_CACHEGEOMETRY) = 0x0000000000000080
> AT_L1D_CACHEGEOMETRY: associativity 0; line size 128
> getauxval(AT_L2_CACHEGEOMETRY) = 0x0000000000000000
> getauxval(AT_L2_CACHEGEOMETRY) = 0x0000000000000000
> --
The mambo device-tree comes from the mambo own internals afaik.
On real HW, the values come from HDAT. If they are wrong we need
the HostBoot guys to fix them.
Cheers,
Ben.
next prev parent reply other threads:[~2017-03-05 23:13 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-02-02 6:22 [PATCH v2] powerpc: A new cache geometry aux vectors Benjamin Herrenschmidt
2017-03-01 20:53 ` Paul Clarke
2017-03-02 6:33 ` Michael Ellerman
2017-03-02 23:46 ` Paul Clarke
2017-03-03 4:01 ` Michael Ellerman
2017-03-03 13:51 ` Paul Clarke
2017-03-05 23:11 ` Benjamin Herrenschmidt [this message]
2017-03-06 5:46 ` Michael Ellerman
2017-03-06 8:24 ` Segher Boessenkool
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