From: Matthew Wilcox <willy@infradead.org>
To: Andrew Morton <akpm@linux-foundation.org>
Cc: linux-mm@kvack.org, Yin Fengwei <fengwei.yin@intel.com>,
Dave Hansen <dave.hansen@intel.com>,
David Hildenbrand <david@redhat.com>,
Thomas Gleixner <tglx@linutronix.de>,
syzbot+55cc72f8cc3a549119df@syzkaller.appspotmail.com
Subject: Re: [PATCH 2/2] mm: Abstract moving to the next PFN
Date: Wed, 20 Sep 2023 05:07:55 +0100 [thread overview]
Message-ID: <ZQpwG78ScM30s2ZA@casper.infradead.org> (raw)
In-Reply-To: <20230920035336.854212-2-willy@infradead.org>
On Wed, Sep 20, 2023 at 04:53:36AM +0100, Matthew Wilcox (Oracle) wrote:
> In order to fix the L1TF vulnerability, x86 can invert the PTE bits for
> PROT_NONE VMAs, which means we cannot move from one PTE to the next by
> adding 1 to the PFN field of the PTE. Abstract advancing the PTE to
> the next PFN through a pte_next_pfn() function/macro.
Argh, wrong version. New version coming up.
next prev parent reply other threads:[~2023-09-20 4:08 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-09-20 3:53 [PATCH 1/2] mm: Report success more often from filemap_map_folio_range() Matthew Wilcox (Oracle)
2023-09-20 3:53 ` [PATCH 2/2] mm: Abstract moving to the next PFN Matthew Wilcox (Oracle)
2023-09-20 4:07 ` Matthew Wilcox [this message]
2023-09-20 9:19 ` kernel test robot
2023-09-20 4:09 ` Matthew Wilcox (Oracle)
2023-09-20 4:32 ` Yin Fengwei
2023-09-20 16:52 ` Andrew Morton
2023-09-20 4:31 ` [PATCH 1/2] mm: Report success more often from filemap_map_folio_range() Yin Fengwei
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=ZQpwG78ScM30s2ZA@casper.infradead.org \
--to=willy@infradead.org \
--cc=akpm@linux-foundation.org \
--cc=dave.hansen@intel.com \
--cc=david@redhat.com \
--cc=fengwei.yin@intel.com \
--cc=linux-mm@kvack.org \
--cc=syzbot+55cc72f8cc3a549119df@syzkaller.appspotmail.com \
--cc=tglx@linutronix.de \
/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