|To:||Ralf Baechle <email@example.com>|
|Subject:||Re: [Bug report] Got bus error when loading kernel module on SB1250 Rev B2 board with 64 bit kernel|
|From:||Yang Shi <firstname.lastname@example.org>|
|Date:||Mon, 17 May 2010 10:57:19 +0800|
|User-agent:||Thunderbird 126.96.36.199 (X11/20100411)|
Ralf Baechle 写道:
On Fri, May 14, 2010 at 06:29:07PM +0800, Yang Shi wrote:I'm running 2.6.34-rc7 mainline kernel on SB1250 (Rev B2) board. And, I use the default sb1250 kernel config (sb1250-swarm_defconfig). So, 64 bit kernel is used. During kernel loading module got bus error, see below log:Whops. Fixes which were supposed to handle exactly this problem went upstream for 2.6.34-rc3 and were tested successfully by others on their systems. I wonder if in arch/mips/sibyte/sb1250/setup.c you can instrument the function sb1250_m3_workaround_needed() and print the values of soc_type, soc_pass and the retun value of that function. Then let's take it from there.
See below log: Broadcom SiByte BCM1250 B2 @ 800 MHz (SB1 rev 2)And, soc_typs is 0x0 and soc_pass is 0x11, sb1250_m3_workaround_needed should return 1. So, tlb refill handler should go the m3 workaround code path.
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