Messages in this thread | | | Subject | Re: [PATCH] x86/mm: Make pud_present() check _PAGE_PROTNONE and _PAGE_PSE as well | From | Anshuman Khandual <> | Date | Sun, 22 Mar 2020 06:30:35 +0530 |
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On 03/21/2020 01:20 AM, John Hubbard wrote: > On 3/20/20 6:22 AM, Anshuman Khandual wrote: > ... >>>> +Cc: Kirill A. Shutemov <kirill@shutemov.name> >>>> +Cc: Dan Williams <dan.j.williams@intel.com> >>> >>> Or we can just drop the pud_mknotpresent(). There's no users AFAICS and >>> only x86 provides it. > > +1 > >> >> Yes that will be an option but IMHO fixing pud_present() here might be >> a better choice because, >> >> (1) pud_mknotpresent() with fixed pud_present() might be required later > > > It might. Or it might not. Let's wait until it's actually used, and see. > Dead code is an avoidable expense (adds size, space on the screen, email > traffic and other wasted time), so let's avoid it here.
Sure, will resend with pud_mknotpresent() dropped.
> > >> (2) PMD & PUD will be exact same (THP is supported on either level) >> >> Nonetheless, I am happy to go either way. >> > > > thanks,
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