Re: [PATCHv2 1/8] khugepaged: Add self test

[Kirill A. Shutemov]

On Mon, Apr 06, 2020 at 02:50:32PM -0400, Zi Yan wrote:
>       khugepaged-58    [001] ....  9913.990380: mm_khugepaged_scan_pmd: mm=00000000283d31fc, scan_pfn=0x2ae4bd, writable=0, referenced=512, none_or_zero=0, status=no_writable_page, unmapped=0

Looks like all failures due to lack of writable ptes. That's very strange
because we write to the page on fill.

You've mentioned that you run it in VM. I wounder if it can be a
virtualizaiton artefact. I run tests under KVM and they are fine. What is
your virtualization setup?

-- 
 Kirill A. Shutemov