From mboxrd@z Thu Jan 1 00:00:00 1970 Date: Wed, 13 Feb 2002 22:14:50 +1100 From: Anton Blanchard To: Werner Almesberger Cc: benh@kernel.crashing.org, linuxppc-dev@lists.linuxppc.org Subject: Re: performance monitor exceptions Message-ID: <20020213111450.GF3886@krispykreme> References: <20020211233730.E5079@almesberger.net> <20020212125502.32396@mailhost.mipsys.com> <20020212193317.F5079@almesberger.net> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii In-Reply-To: <20020212193317.F5079@almesberger.net> Sender: owner-linuxppc-dev@lists.linuxppc.org List-Id: > Bingo ! That seems to be the one: > > http://www.mot.co.jp/SPS/html/lit/pdf/mpc7410pns_rev0.pdf > > #5: > Description: Consecutive Performance Monitor, Decrementer, > or Thermal Management Interrupts may become non-recoverable. > > Work-Around: Avoid enabling any combination of > Performance Monitor, Decrementer, or Thermal Management > Interrupts at the same time. Thats rather ugly :( BTW I have run kernel profiling off the performance monitor exception on ppc64 which has been very useful (it allowed us to profile inside interrupt disabled regions) Anton ** Sent via the linuxppc-dev mail list. See http://lists.linuxppc.org/