From: Peter Xu <peterx@redhat.com>
To: James Houghton <jthoughton@google.com>
Cc: Mike Kravetz <mike.kravetz@oracle.com>,
Muchun Song <songmuchun@bytedance.com>,
Axel Rasmussen <axelrasmussen@google.com>,
Andrew Morton <akpm@linux-foundation.org>,
linux-mm@kvack.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH] hugetlb: unshare some PMDs when splitting VMAs
Date: Wed, 4 Jan 2023 15:04:26 -0500 [thread overview]
Message-ID: <Y7XbymU+hy6ZJO+/@x1n> (raw)
In-Reply-To: <CADrL8HWSym93=yNpTUdWebOEzUOTR2ffbfUk04XdK6O+PNJNoA@mail.gmail.com>
On Wed, Jan 04, 2023 at 07:34:00PM +0000, James Houghton wrote:
> How about:
>
> /*
> * PMD sharing is only possible for PUD_SIZE-aligned address ranges
> * in HugeTLB VMAs. If we will lose PUD_SIZE alignment due to this split,
> * unshare PMDs in the PUD_SIZE interval surrounding addr now.
> */
Even better, thanks.
--
Peter Xu
prev parent reply other threads:[~2023-01-04 20:04 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-01-01 23:00 [PATCH] hugetlb: unshare some PMDs when splitting VMAs James Houghton
2023-01-03 19:24 ` Mike Kravetz
2023-01-03 20:26 ` James Houghton
2023-01-03 20:27 ` James Houghton
2023-01-03 22:23 ` Mike Kravetz
2023-01-04 19:10 ` James Houghton
2023-01-04 20:03 ` Peter Xu
2023-01-04 23:12 ` James Houghton
2023-01-03 23:04 ` Peter Xu
2023-01-04 19:34 ` James Houghton
2023-01-04 20:04 ` Peter Xu [this message]
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