linux-kernel - Re: [PATCH] mm/uffd: Always wr-protect pte in pte_mkuffd

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Message-ID: <Y49sIRZ1y6wq884J@x1n>
Date:   Tue, 6 Dec 2022 11:21:53 -0500
From:   Peter Xu <peterx@...hat.com>
To:     kernel test robot <lkp@...el.com>
Cc:     David Hildenbrand <david@...hat.com>,
        oe-kbuild-all@...ts.linux.dev, linux-kernel@...r.kernel.org,
        linux-mm@...ck.org, Ives van Hoorne <ives@...esandbox.io>,
        stable@...r.kernel.org, Andrew Morton <akpm@...ux-foundation.org>,
        Hugh Dickins <hugh@...itas.com>,
        Alistair Popple <apopple@...dia.com>,
        Mike Rapoport <rppt@...ux.vnet.ibm.com>,
        Nadav Amit <nadav.amit@...il.com>,
        Andrea Arcangeli <aarcange@...hat.com>
Subject: Re: [PATCH] mm/uffd: Always wr-protect pte in pte_mkuffd_wp()

On Tue, Dec 06, 2022 at 08:46:17AM +0800, kernel test robot wrote:
> vim +316 arch/x86/include/asm/pgtable.h
> 
>    313	
>    314	static inline pte_t pte_mkuffd_wp(pte_t pte)
>    315	{
>  > 316		return pte_wrprotect(pte_set_flags(pte, _PAGE_UFFD_WP));
>    317	}

It's interesting to know the bot will test any patch I attach in an mail
reply, which is very nice...

I'll send a formal patch for this one soon.

-- 
Peter Xu