From mboxrd@z Thu Jan 1 00:00:00 1970 From: Sachin Sant Subject: Re: [-next April 8] eHEA driver failure on powerpc Date: Fri, 09 Apr 2010 23:18:18 +0530 Message-ID: <4BBF6862.3010600@in.ibm.com> References: <20100408155113.ef8df30c.sfr@canb.auug.org.au> <4BBDC447.3040901@in.ibm.com> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Cc: linux-next@vger.kernel.org, netdev , HERING2@de.ibm.com, Anton Blanchard , Benjamin Herrenschmidt To: Linux/PPC Development Return-path: In-Reply-To: <4BBDC447.3040901@in.ibm.com> Sender: linux-next-owner@vger.kernel.org List-Id: netdev.vger.kernel.org Sachin Sant wrote: > With today's next release, eHEA network interface on couple > of power6 boxes fails to initialize. > > # modprobe ehea > IBM eHEA ethernet device driver (Release EHEA_0102) > alloc irq_desc for 256 on node 0 > alloc kstat_irqs on node 0 > irq: irq 590080 on host null mapped to virtual irq 256 > ehea: Error in ehea_plpar_hcall_norets: opcode=26c > ret=fffffffffffffffc arg1=8000000003000000 arg2=0 > arg3=7000000000050400 arg4=fc9b0000 arg5=200 arg6=0 arg7=0 > ehea: Error in ehea_reg_mr_section: register_rpage_mr failed > ehea: Error in ehea_reg_kernel_mr: registering mr failed > ehea: Error in ehea_setup_ports: creating MR failed > ehea 23c00200.lhea: setup_ports failed > ehea: probe of 23c00200.lhea failed with error -5 I tracked this problem to the following commit. commit 7545ba6f82924d4523f8f8a2baf2e517a750265d powerpc/mm: Bump SECTION_SIZE_BITS from 16MB to 256MB If i revert this commit, the network interface is initialized properly. Verified this on two different power6 boxes. Thanks -Sachin -- --------------------------------- Sachin Sant IBM Linux Technology Center India Systems and Technology Labs Bangalore, India ---------------------------------