linux-kernel - Re: [PATCH RFC 3/6] kexec: export PG

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Message-ID: <685892a9-3a56-8e8c-dbe7-8b1159067a6b@redhat.com>
Date:   Thu, 15 Nov 2018 10:23:13 +0100
From:   David Hildenbrand <david@...hat.com>
To:     Dave Young <dyoung@...hat.com>
Cc:     linux-mm@...ck.org, linux-kernel@...r.kernel.org,
        linux-doc@...r.kernel.org, devel@...uxdriverproject.org,
        linux-fsdevel@...r.kernel.org, linux-pm@...r.kernel.org,
        xen-devel@...ts.xenproject.org,
        Andrew Morton <akpm@...ux-foundation.org>,
        "Kirill A. Shutemov" <kirill.shutemov@...ux.intel.com>,
        Baoquan He <bhe@...hat.com>, Omar Sandoval <osandov@...com>,
        Arnd Bergmann <arnd@...db.de>,
        Matthew Wilcox <willy@...radead.org>,
        Michal Hocko <mhocko@...e.com>,
        Lianbo Jiang <lijiang@...hat.com>,
        Borislav Petkov <bp@...en8.de>,
        "Michael S. Tsirkin" <mst@...hat.com>
Subject: Re: [PATCH RFC 3/6] kexec: export PG_offline to VMCOREINFO

On 15.11.18 07:19, Dave Young wrote:
> Hi David,
> 
> On 11/14/18 at 10:17pm, David Hildenbrand wrote:
>> Let's export PG_offline via PAGE_OFFLINE_MAPCOUNT_VALUE, so
>> makedumpfile can directly skip pages that are logically offline and the
>> content therefore stale.
> 
> It would be good to copy some background info from cover letter to the
> patch description so that we can get better understanding why this is
> needed now.

Yes, will add more detail!

> 
> BTW, Lianbo is working on a documentation of the vmcoreinfo exported
> fields. Ccing him so that he is aware of this.
> 
> Also cc Boris,  although I do not want the doc changes blocks this
> he might have different opinion :)

I'll be happy to help updating documentation (or updating it myself if
the doc updates go in first).

-- 

Thanks,

David / dhildenb