Re: [PATCH] arch/{mips,sparc,microblaze,powerpc}: Don't enable pagefault/preempt twice

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On Tue, May 19, 2020 at 12:42:15PM -0700, Guenter Roeck wrote:
> > On Tue, May 19, 2020 at 09:54:22AM -0700, Guenter Roeck wrote:
> > > as do the nosmp sparc32 boot tests,
> > > but sparc32 boot tests with SMP enabled still fail with lots of messages
> > > such as:
> > > 
> > > BUG: Bad page state in process swapper/0  pfn:006a1
> > > page:f0933420 refcount:0 mapcount:1 mapping:(ptrval) index:0x1
> > > flags: 0x0()
> > > raw: 00000000 00000100 00000122 00000000 00000001 00000000 00000000 00000000
> > > page dumped because: nonzero mapcount
> > > Modules linked in:
> > > CPU: 0 PID: 1 Comm: swapper/0 Tainted: G    B             5.7.0-rc6-next-20200518-00002-gb178d2d56f29 #1
> > > [f00e7ab8 :
> > > bad_page+0xa8/0x108 ]
> > > [f00e8b54 :
> > > free_pcppages_bulk+0x154/0x52c ]
> > > [f00ea024 :
> > > free_unref_page+0x54/0x6c ]
> > > [f00ed864 :
> > > free_reserved_area+0x58/0xec ]
> > > [f0527104 :
> > > kernel_init+0x14/0x110 ]
> > > [f000b77c :
> > > ret_from_kernel_thread+0xc/0x38 ]
> > > [00000000 :
> > > 0x0 ]
> > > 
> > > Code path leading to that message is different but always the same
> > > from free_unref_page().
> > > 
> > > Still testing ppc images.
> > > 
> 
> ppc image tests are passing with this patch.

How about sparc?  I finally got your scripts to run on sparc and everything
looks to be passing?

Are we all good now?

Thanks again!
Ira



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