linux-kernel - Re: [PATCH v3 8/8] x86, mm, gup: prevent get_page() race with munmap in paravirt guest

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Date:   Tue, 17 Dec 2019 04:13:55 +0000
From:   Ajay Kaher <akaher@...are.com>
To:     Vitaly Kuznetsov <vkuznets@...hat.com>,
        Vlastimil Babka <vbabka@...e.cz>
CC:     Peter Zijlstra <peterz@...radead.org>,
        "gregkh@...uxfoundation.org" <gregkh@...uxfoundation.org>,
        "stable@...r.kernel.org" <stable@...r.kernel.org>,
        "torvalds@...ux-foundation.org" <torvalds@...ux-foundation.org>,
        "punit.agrawal@....com" <punit.agrawal@....com>,
        "akpm@...ux-foundation.org" <akpm@...ux-foundation.org>,
        "kirill.shutemov@...ux.intel.com" <kirill.shutemov@...ux.intel.com>,
        "willy@...radead.org" <willy@...radead.org>,
        "will.deacon@....com" <will.deacon@....com>,
        "mszeredi@...hat.com" <mszeredi@...hat.com>,
        "linux-mm@...ck.org" <linux-mm@...ck.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        Srivatsa Bhat <srivatsab@...are.com>,
        "srivatsa@...il.mit.edu" <srivatsa@...il.mit.edu>,
        Alexey Makhalov <amakhalov@...are.com>,
        Srinidhi Rao <srinidhir@...are.com>,
        Vikash Bansal <bvikas@...are.com>,
        Anish Swaminathan <anishs@...are.com>,
        Vasavi Sirnapalli <vsirnapalli@...are.com>,
        Steven Rostedt <srostedt@...are.com>,
        Oscar Salvador <osalvador@...e.de>,
        Thomas Gleixner <tglx@...utronix.de>,
        Ingo Molnar <mingo@...hat.com>,
        Juergen Gross <jgross@...e.com>,
        Borislav Petkov <bp@...en8.de>,
        Dave Hansen <dave.hansen@...ux.intel.com>,
        Andy Lutomirski <luto@...nel.org>
Subject: Re: [PATCH v3 8/8] x86, mm, gup: prevent get_page() race with munmap
 in paravirt guest



On 16/12/19, 9:38 PM, "Vitaly Kuznetsov" <vkuznets@...hat.com> wrote:

> (I also dislike receiving only this patch of the series, next time
> please send the whole thing, it's only 8 patches, our mailfolders will
> survive that)

Thanks for pointing this, I will take care. 

> I'm not sure which stable kernel you're targeting (and if you addressed this
> with other patches in the series, if this is needed,...) so JFYI.

This series is for 4.4.y, please refer following link for complete series:
https://lore.kernel.org/stable/1576529149-14269-1-git-send-email-akaher@vmware.com/

Yes, this 'Patch v3 8/8' could be merged separately, if it's unsafe to merge at this movement.  

- Ajay