From: "Kirill A. Shutemov" <kirill@shutemov.name>
To: David Hildenbrand <david@redhat.com>
Cc: "linux-mm@kvack.org" <linux-mm@kvack.org>,
Ryan Roberts <ryan.roberts@arm.com>,
Matthew Wilcox <willy@infradead.org>
Subject: Re: The future of PageAnonExclusive
Date: Wed, 11 Dec 2024 15:42:34 +0200 [thread overview]
Message-ID: <oelikmopexm66p7pthwrt5qw6w4ro3hduc6thefvxdhcx2l27v@bxln22rb55hx> (raw)
In-Reply-To: <3a9e7c3b-7b69-4f16-80ea-b1a0d4dba853@redhat.com>
On Wed, Dec 11, 2024 at 12:56:11PM +0100, David Hildenbrand wrote:
> > (C) Encode it in the PTE.
> >
> > pte_write() -> PAE
> >
> > !pte_write() && pte_dirty() -> PAE
> >
> > !pte_write && !pte_dirty() -> !PAE
You are late to the party. On x86, !pte_write() && pte_dirty() is shadow
stack.
--
Kiryl Shutsemau / Kirill A. Shutemov
next prev parent reply other threads:[~2024-12-11 13:42 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-12-11 11:55 David Hildenbrand
2024-12-11 11:56 ` David Hildenbrand
2024-12-11 13:42 ` Kirill A. Shutemov [this message]
2024-12-11 13:48 ` David Hildenbrand
2024-12-11 14:25 ` Ryan Roberts
2024-12-11 14:49 ` David Hildenbrand
2024-12-11 15:45 ` Matthew Wilcox
2024-12-11 15:50 ` David Hildenbrand
2024-12-11 16:11 ` Matthew Wilcox
2024-12-11 16:15 ` David Hildenbrand
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=oelikmopexm66p7pthwrt5qw6w4ro3hduc6thefvxdhcx2l27v@bxln22rb55hx \
--to=kirill@shutemov.name \
--cc=david@redhat.com \
--cc=linux-mm@kvack.org \
--cc=ryan.roberts@arm.com \
--cc=willy@infradead.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox