On Mon, Mar 20, 2017 at 11:08:41AM -0700, hpa@zytor.com wrote:

On March 19, 2017 1:26:58 AM PDT, "Kirill A. Shutemov" [off-list ref] wrote:

quoted

On Mar 19, 2017 09:25, "Aneesh Kumar K.V" [off-list ref] wrote:

quoted

What is the epectation when the hint addr is below 128TB but addr + len
128TB ? Should such mmap request fail ?

Yes, I believe so.

This *better* be conditional on some kind of settable limit.  Having a
barrier in the middle of the address space for no apparent reason to
"clean" software is insane.

I disagree with Kirill here.  If addr+len > 128TB, I think we should
assume the application is 57-bit aware.

Specifying hint addresses is such a rare thing to do anyway.

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