SMP issues on ARM11 MPCore

[mkl lin]

> Could you do your tests again with
> 2.6.32
> and additionally following three patches applied
>
> 1. Global ASID allocation on SMP
> http://www.linux-arm.org/git?p=linux-2.6.git;a=commit;h=64e1c582dc57ab5278e43c4479f6ba8c967b1d1a
I have tested linux-2.6.33-rc1, which have

        commit 82213c680f9be0215fcdd3d6dfdc17c7089491ac
        Author: Catalin Marinas <catalin.marinas at arm.com>
        Date:   Fri Dec 18 11:30:59 2009 +0000

            Global ASID allocation on SMP

> 2. dma_cache_maint_contiguous should be patched as dma_cache_maint do
> http://lists.arm.linux.org.uk/lurker/message/20091210.171543.745c2f3f.en.html
I have the patch in my linux-2.6.33-rc1 port. I am using IPI patch instead of the RFO patch, for performance consideration.
However, my test have nothing to do with DMA, it should be irrelevant.

> 3. ARM: Fix a race in the vfp_notifier() function on SMPsystems
> http://lists.arm.linux.org.uk/lurker/message/20091222.153615.c803c376.en.html
linux-2.6.33-rc1 have the patch
        commit ac154e12c2a436830ce6745c1e9b197f7ae19afc
        Author: Catalin Marinas <catalin.marinas at arm.com>
        Date:   Fri Dec 18 12:44:38 2009 +0000

            Fix a race in the vfp_notifier() function on SMP systems
It seems the same issue but the patch is totally different. Is it just another solution of the same issue or what? Should I apply the patch you mentioned with  or without this one?

>> BTW, I have done a quick port to linux-2.6.33-rc1, branch master, based on commit f2d9a06. With DCache and CONFIG_LOCAL_TIMERS, I have seen case 1, which means this issue is not fixed yet.
As I've said, I have the same issue on linux-2.6.33-rc1.

Best Regards,
Mac Lin.


 		 	   		  
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