From: "Luck, Tony" <tony.luck@intel.com>
To: linux-ia64@vger.kernel.org
Subject: RE: Machine check when executing ptc.ga
Date: Thu, 13 Nov 2003 16:43:37 +0000 [thread overview]
Message-ID: <marc-linux-ia64-106874240705584@msgid-missing> (raw)
In-Reply-To: <marc-linux-ia64-106874043202631@msgid-missing>
> The failing instruction is:
>
> ptc.ga r32,r34;;
>
> and r32 = a0000000 00000000, r34 = 00000000 00000040.
You are flushing 64k bytes at 0xa000000000000000. A default
pagesize of 16k would mean that this range includes the
per-cpu area (at 0xa000000000000000 + 2*PAGE_SIZE on 2.4.20).
The per-cpu area is mapped by an entry pinned into the TLB
by DTR[1] ... so the ptc chokes beacause it can only flush
TLB cache entries.
-Tony
prev parent reply other threads:[~2003-11-13 16:43 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-11-13 16:21 Machine check when executing ptc.ga Zoltan Menyhart
2003-11-13 16:43 ` Luck, Tony [this message]
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