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Subject: Re: [RFC 07/16] KVM: mm: Introduce VM_KVM_PROTECTED
To:     "Kirill A. Shutemov" <kirill@shutemov.name>,
        Dave Hansen <dave.hansen@linux.intel.com>,
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References: <20200522125214.31348-1-kirill.shutemov@linux.intel.com>
 <20200522125214.31348-8-kirill.shutemov@linux.intel.com>
From:   John Hubbard <jhubbard@nvidia.com>
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On 2020-05-22 05:52, Kirill A. Shutemov wrote:
...
> @@ -2773,6 +2780,7 @@ struct page *follow_page(struct vm_area_struct *vma, unsigned long address,
>   #define FOLL_LONGTERM	0x10000	/* mapping lifetime is indefinite: see below */
>   #define FOLL_SPLIT_PMD	0x20000	/* split huge pmd before returning */
>   #define FOLL_PIN	0x40000	/* pages must be released via unpin_user_page */
> +#define FOLL_KVM	0x80000 /* access to VM_KVM_PROTECTED VMAs */
>   

I grabbed 0x80000 already, for FOLL_FAST_ONLY. :)

thanks,
-- 
John Hubbard
NVIDIA