Re: [tip:x86/platform] x86/intel/quark: Switch off CR4.PGE so TLB flush uses CR3 instead

From: H. Peter Anvin
Date: Wed Sep 24 2014 - 14:42:50 EST

On 09/24/2014 09:07 AM, Bryan O'Donoghue wrote:
>> So __flush_tlb_all(); will do nothing but that's OK since load_cr3()
>> already flushed the TLB - including any PTE with PGE set
> I take your point though.
> It's probably better to be explicit and do the whole
> if (quark)
> __flush_tlb();
> else
> __flush_tlb_all();
> So that we aren't relying on the side effects of the previous statement.

Well, we need a comment at least.


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