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