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Subject: Re: [PATCH v2 2/2] powerpc/hibernate: PPC64 fix user threads access
 to kernel space
From: Benjamin Herrenschmidt <benh@kernel.crashing.org>
To: Wang Dongsheng-B40534 <B40534@freescale.com>
Date: Sun, 09 Jun 2013 17:45:46 +1000
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Cc: Wood Scott-B07421 <B07421@freescale.com>,
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On Sun, 2013-06-09 at 07:44 +0000, Wang Dongsheng-B40534 wrote:
> So we just need set set_context() in restore_mmu_context().
> 
> void restore_mmu_context(struct mm_struct *next) {
>         set_context(next->context.id, next->pgd);
> }

We probably also want to flush the TLB, just in case the boot kernel has
left "something" there (though I wouldn't expect it to have run
userspace it's not completely impossible).

Cheers,
Ben.