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

[H. Peter Anvin]

On 09/24/2014 11:42 AM, H. Peter Anvin wrote:
> 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.
> 

And certainly we don't need an if/else as we can just do it.

	-hpa


--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/