Re: [PATCH v2 3/3] x86: Support local_flush_tlb_kernel_range

[Alex Shi]

On Thu, May 17, 2012 at 11:08 PM, Peter Zijlstra <peterz@xxxxxxxxxxxxx> wrote:
> On Thu, 2012-05-17 at 16:51 +0200, Peter Zijlstra wrote:
>>
>> Also, does it even work if the range happens to be backed by huge pages?
>> IIRC we try and do the identity map with large pages wherever possible.
>
> OK, the Intel SDM seems to suggest it will indeed invalidate ANY mapping
> to that linear address, which would include 2M and 1G pages.

As for as I know, the 1GB TLB fold into 2MB now, and 2MB page still
maybe fold into 4K page in TLB flush. We are tracking this.

>
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