From: Pawan Gupta <pawan.kumar.gupta@linux.intel.com>
To: Breno Leitao <leitao@debian.org>
Cc: Thomas Gleixner <tglx@linutronix.de>,
Ingo Molnar <mingo@redhat.com>, Borislav Petkov <bp@alien8.de>,
Dave Hansen <dave.hansen@linux.intel.com>,
x86@kernel.org, "H. Peter Anvin" <hpa@zytor.com>,
Peter Zijlstra <peterz@infradead.org>,
Josh Poimboeuf <jpoimboe@kernel.org>,
leit@fb.com,
"open list:X86 ARCHITECTURE (32-BIT AND 64-BIT)"
<linux-kernel@vger.kernel.org>
Subject: Re: [PATCH v2] x86/bugs: Break down mitigations configurations
Date: Tue, 20 Jun 2023 17:13:27 -0700 [thread overview]
Message-ID: <20230621001327.qdyebewnx7r5aiy3@desk> (raw)
In-Reply-To: <20230616164851.2559415-1-leitao@debian.org>
On Fri, Jun 16, 2023 at 09:48:50AM -0700, Breno Leitao wrote:
> There is no way to disable MDS, TAA, MMIO Stale data mitigation today at
> compilation time. These mitigations are enabled even if
> CONFIG_SPECULATION_MITIGATIONS is unset.
>
> Create a new KCONFIG option for each mitigation under
> CONFIG_SPECULATION_MITIGATIONS that allows these
> mitigations to be disabled by default at compilation time.
I don't think all mitigations are still controllable at build-time e.g.
spectre_v2 eIBRS mitigation will still be deployed irrespective of the
config.
next prev parent reply other threads:[~2023-06-21 0:13 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-06-16 16:48 [PATCH v2] x86/bugs: Break down mitigations configurations Breno Leitao
2023-06-21 0:13 ` Pawan Gupta [this message]
2023-06-21 15:54 ` Breno Leitao
2023-06-21 17:31 ` Pawan Gupta
2023-06-21 18:36 ` Breno Leitao
2023-06-21 19:41 ` Pawan Gupta
2023-06-21 22:35 ` Dave Hansen
2023-06-21 22:52 ` Breno Leitao
2023-06-21 22:58 ` Dave Hansen
2023-06-22 12:42 ` Borislav Petkov
2023-06-22 13:42 ` Dave Hansen
2023-06-27 17:36 ` Breno Leitao
2023-06-27 22:30 ` Pawan Gupta
2023-06-28 9:15 ` Breno Leitao
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=20230621001327.qdyebewnx7r5aiy3@desk \
--to=pawan.kumar.gupta@linux.intel.com \
--cc=bp@alien8.de \
--cc=dave.hansen@linux.intel.com \
--cc=hpa@zytor.com \
--cc=jpoimboe@kernel.org \
--cc=leit@fb.com \
--cc=leitao@debian.org \
--cc=linux-kernel@vger.kernel.org \
--cc=mingo@redhat.com \
--cc=peterz@infradead.org \
--cc=tglx@linutronix.de \
--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 a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).