linux-kernel - Re: [RFC PATCH 0/5] madvise MADV

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Message-ID: <YRsI6CXcRPTHFV0J@casper.infradead.org>
Date:   Tue, 17 Aug 2021 01:55:04 +0100
From:   Matthew Wilcox <willy@...radead.org>
To:     "Longpeng (Mike, Cloud Infrastructure Service Product Dept.)" 
        <longpeng2@...wei.com>
Cc:     David Hildenbrand <david@...hat.com>,
        Khalid Aziz <khalid.aziz@...cle.com>,
        Steven Sistare <steven.sistare@...cle.com>,
        Anthony Yznaga <anthony.yznaga@...cle.com>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "linux-mm@...ck.org" <linux-mm@...ck.org>,
        "Gonglei (Arei)" <arei.gonglei@...wei.com>
Subject: Re: [RFC PATCH 0/5] madvise MADV_DOEXEC

On Tue, Aug 17, 2021 at 12:47:19AM +0000, Longpeng (Mike, Cloud Infrastructure Service Product Dept.) wrote:
> I understand your intent now, you want to share memory ranges by sharing the relevant
> pgtable pages. 
> 
> I had implemented a similar idea to support QEMU live upgrade about four years ago
> ( in late 2017),
> 
> https://patents.google.com/patent/US20210089345A1

I am not going to read a patent.  This conversation is now over until
I have had a conversation with my patent attorney.