From: Rik van Riel <riel@surriel.com>
To: Dave Hansen <dave.hansen@linux.intel.com>, linux-kernel@vger.kernel.org
Cc: Andy Lutomirski <luto@kernel.org>, Borislav Petkov <bp@alien8.de>,
Ingo Molnar <mingo@kernel.org>, Nadav Amit <nadav.amit@gmail.com>,
Peter Zijlstra <peterz@infradead.org>,
stable@vger.kernel.org
Subject: Re: [PATCH] x86/mm: Disable INVLPGB when PTI is enabled
Date: Tue, 10 Jun 2025 20:43:01 -0400 [thread overview]
Message-ID: <ce520c1e28475703c71ab817de790823e29cda7e.camel@surriel.com> (raw)
In-Reply-To: <20250610222420.E8CBF472@davehans-spike.ostc.intel.com>
On Tue, 2025-06-10 at 15:24 -0700, Dave Hansen wrote:
>
> Disable INVLPGB if PTI is enabled. Avoid overrunning the small
> bitmap.
>
> Note: this will be fixed up properly by making the bitmap bigger.
> For now, just avoid the mostly theoretical bug.
>
Does that mean the patch to make the bitmap bigger
is a dependency that needs to be in place before
the RAR code (hoping to send out v4 later this week)
can be merged?
> Signed-off-by: Dave Hansen <dave.hansen@linux.intel.com>
> Fixes: 4afeb0ed1753 ("x86/mm: Enable broadcast TLB invalidation for
> multi-threaded processes")
Acked-by: Rik van Riel <riel@surriel.com>
--
All Rights Reversed.
next prev parent reply other threads:[~2025-06-11 0:43 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-06-10 22:24 Dave Hansen
2025-06-11 0:43 ` Rik van Riel [this message]
2025-06-11 3:53 ` Dave Hansen
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=ce520c1e28475703c71ab817de790823e29cda7e.camel@surriel.com \
--to=riel@surriel.com \
--cc=bp@alien8.de \
--cc=dave.hansen@linux.intel.com \
--cc=linux-kernel@vger.kernel.org \
--cc=luto@kernel.org \
--cc=mingo@kernel.org \
--cc=nadav.amit@gmail.com \
--cc=peterz@infradead.org \
--cc=stable@vger.kernel.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
all inboxes | Powered by JetHome®