From: Michal Hocko <mhocko@suse.com>
To: Laurent Dufour <ldufour@linux.vnet.ibm.com>
Cc: "Kirill A . Shutemov" <kirill@shutemov.name>,
Peter Zijlstra <peterz@infradead.org>,
Linux MM <linux-mm@kvack.org>
Subject: Re: [RFC PATCH v2 0/7] Speculative page faults
Date: Fri, 2 Dec 2016 15:10:06 +0100 [thread overview]
Message-ID: <20161202141006.GO6830@dhcp22.suse.cz> (raw)
In-Reply-To: <cover.1479465699.git.ldufour@linux.vnet.ibm.com>
On Fri 18-11-16 12:08:44, Laurent Dufour wrote:
> This is a port on kernel 4.8 of the work done by Peter Zijlstra to
> handle page fault without holding the mm semaphore.
>
> http://linux-kernel.2935.n7.nabble.com/RFC-PATCH-0-6-Another-go-at-speculative-page-faults-tt965642.html#none
>
> This series is not yet functional, I'm sending it to get feedback
> before going forward in the wrong direction. It's building on top of
> the 4.8 kernel but some task remain stuck at runtime, so there is
> still need for additional work.
>
> According to the review made by Kirill A. Shutemov on the Peter's
> work, there are still pending issues around the VMA sequence count
> management. I'll look at it right now.
>
> Kirill, Peter, if you have any tips on the place where VMA sequence
> count should be handled, please advise.
I believe that a highlevel description of the change would be _more_
than welcome.
--
Michal Hocko
SUSE Labs
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next prev parent reply other threads:[~2016-12-02 14:10 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-10-17 12:33 mmap_sem bottleneck Laurent Dufour
2016-10-17 12:51 ` Peter Zijlstra
2016-10-18 14:50 ` Laurent Dufour
2016-10-18 15:01 ` Kirill A. Shutemov
2016-10-18 15:02 ` Peter Zijlstra
2016-11-18 11:08 ` [RFC PATCH v2 0/7] Speculative page faults Laurent Dufour
2016-11-18 11:08 ` [RFC PATCH v2 1/7] mm: Dont assume page-table invariance during faults Laurent Dufour
2016-11-18 11:08 ` [RFC PATCH v2 2/7] mm: Prepare for FAULT_FLAG_SPECULATIVE Laurent Dufour
2016-11-18 11:08 ` [RFC PATCH v2 3/7] mm: Introduce pte_spinlock Laurent Dufour
2016-11-18 11:08 ` [RFC PATCH v2 4/7] mm: VMA sequence count Laurent Dufour
2016-11-18 11:08 ` [RFC PATCH v2 5/7] SRCU free VMAs Laurent Dufour
2016-11-18 11:08 ` [RFC PATCH v2 6/7] mm: Provide speculative fault infrastructure Laurent Dufour
2016-11-18 11:08 ` [RFC PATCH v2 7/7] mm,x86: Add speculative pagefault handling Laurent Dufour
2016-11-18 14:08 ` [RFC PATCH v2 0/7] Speculative page faults Andi Kleen
2016-12-01 8:34 ` Laurent Dufour
2016-12-01 12:50 ` Balbir Singh
2016-12-01 13:26 ` Laurent Dufour
2016-12-02 14:10 ` Michal Hocko [this message]
2016-10-17 12:57 ` mmap_sem bottleneck Michal Hocko
2016-10-20 7:23 ` Laurent Dufour
2016-10-20 10:55 ` Michal Hocko
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