linux-kernel - RE: [RFC PATCH v1 3/4] thp: fix huge page zapping for special PMDs

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Message-ID: <DB7PR02MB397968E491D23C0F5B611970BB5A0@DB7PR02MB3979.eurprd02.prod.outlook.com>
Date:   Wed, 11 Dec 2019 17:08:36 +0000
From:   Mircea CIRJALIU - MELIU <mcirjaliu@...defender.com>
To:     "Kirill A. Shutemov" <kirill@...temov.name>
CC:     "linux-mm@...ck.org" <linux-mm@...ck.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        Jerome Glisse <jglisse@...hat.com>,
        Paolo Bonzini <pbonzini@...hat.com>,
        "aarcange@...hat.com" <aarcange@...hat.com>
Subject: RE: [RFC PATCH v1 3/4] thp: fix huge page zapping for special PMDs

> On Wed, Dec 11, 2019 at 09:29:20AM +0000, Mircea CIRJALIU - MELIU wrote:
> > When calling zap_vma_ptes() on VM_PFNMAP VMAs involving huge
> mappings,
> 
> Do we have such VMAs?

I have such VMAs in the remote mapping feature.
Any reason why these VMAs are dangerous?

> 
> --
>  Kirill A. Shutemov
> 
> ________________________
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