Re: [PATCHv3 07/17] x86/mm: Preserve KeyID on pte_modify() and pgprot_modify()

[Dave Hansen]

On 06/15/2018 01:45 PM, Kirill A. Shutemov wrote:
> On Fri, Jun 15, 2018 at 04:58:24PM +0000, Dave Hansen wrote:
>> On 06/15/2018 09:06 AM, Kirill A. Shutemov wrote:
>>> I have no idea what such concept should be called. I cannot come with
>>> anything better than PTE_PFN_MASK_MAX. Do you?
>> PTE_PRESERVE_MASK
>>
>> Or maybe:
>>
>> PTE_MODIFY_PRESERVE_MASK
> It just replacing one confusion with another. Preserve what?

"Preserve this mask when modifying pte permission bits"