From: Ingo Molnar <mingo@kernel.org>
To: Peter Zijlstra <peterz@infradead.org>
Cc: Nathan Chancellor <nathan@kernel.org>,
Thomas Gleixner <tglx@kernel.org>, Ingo Molnar <mingo@redhat.com>,
Borislav Petkov <bp@alien8.de>,
Dave Hansen <dave.hansen@linux.intel.com>,
x86@kernel.org, Ard Biesheuvel <ardb@kernel.org>,
Nick Desaulniers <nick.desaulniers+lkml@gmail.com>,
Bill Wendling <morbo@google.com>,
Justin Stitt <justinstitt@google.com>,
linux-kernel@vger.kernel.org, llvm@lists.linux.dev,
stable@vger.kernel.org
Subject: Re: [PATCH] x86/boot/compressed: Disable jump tables for clang
Date: Wed, 24 Jun 2026 11:55:10 +0200 [thread overview]
Message-ID: <ajupfkcZTTxGP2dG@gmail.com> (raw)
In-Reply-To: <ajuoqIk4tSV7CmFC@gmail.com>
* Ingo Molnar <mingo@kernel.org> wrote:
> > I'm sitting on a patch to unconditionally disable jump-tables for
> > x86_64:
> >
> > https://web.git.kernel.org/pub/scm/linux/kernel/git/peterz/queue.git/log/?h=x86/syscall
>
> In particular:
>
> https://web.git.kernel.org/pub/scm/linux/kernel/git/peterz/queue.git/commit/?h=x86/syscall&id=76612388fe7aa41a8eb88f890d451bc17255eda0
Side note: since arch/x86/boot/compressed/Makefile constructs
its own KBUILD_CFLAGS, so a change to that Makefile will still
be required to universally apply -fno-jump-tables and work
around this Clang optimization in the decompression code.
Thanks,
Ingo
prev parent reply other threads:[~2026-06-24 9:55 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-06-23 21:47 [PATCH] x86/boot/compressed: Disable jump tables for clang Nathan Chancellor
2026-06-24 9:36 ` Ingo Molnar
2026-06-24 9:38 ` Peter Zijlstra
2026-06-24 9:51 ` Ingo Molnar
2026-06-24 9:55 ` Ingo Molnar [this message]
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=ajupfkcZTTxGP2dG@gmail.com \
--to=mingo@kernel.org \
--cc=ardb@kernel.org \
--cc=bp@alien8.de \
--cc=dave.hansen@linux.intel.com \
--cc=justinstitt@google.com \
--cc=linux-kernel@vger.kernel.org \
--cc=llvm@lists.linux.dev \
--cc=mingo@redhat.com \
--cc=morbo@google.com \
--cc=nathan@kernel.org \
--cc=nick.desaulniers+lkml@gmail.com \
--cc=peterz@infradead.org \
--cc=stable@vger.kernel.org \
--cc=tglx@kernel.org \
--cc=x86@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 an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.