Follow @Openwall on Twitter for new release announcements and other news
[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Date: Mon, 13 Nov 2017 14:20:17 -0800
From: Dave Hansen <>
To: Tycho Andersen <>
 Marco Benatto <>,
 Juerg Haefliger <>,
Subject: Re: [PATCH v6 03/11] mm, x86: Add support for eXclusive Page Frame
 Ownership (XPFO)

On 11/09/2017 05:09 PM, Tycho Andersen wrote:
> which I guess is from the additional flags in grow_dev_page() somewhere down
> the stack. Anyway... it seems this is a kernel allocation that's using
> MIGRATE_MOVABLE, so perhaps we need some more fine tuned heuristic than just
> all MOVABLE allocations are un-mapped via xpfo, and all the others are mapped.
> Do you have any ideas?

It still has to do a kmap() or kmap_atomic() to be able to access it.  I
thought you hooked into that.  Why isn't that path getting hit for these?

Powered by blists - more mailing lists

Confused about mailing lists and their use? Read about mailing lists on Wikipedia and check out these guidelines on proper formatting of your messages.