From: Pawan Gupta <pawan.kumar.gupta@linux.intel.com>
To: x86@kernel.org
Cc: David Kaplan <david.kaplan@amd.com>,
linux-kernel@vger.kernel.org, "H. Peter Anvin" <hpa@zytor.com>,
Josh Poimboeuf <jpoimboe@kernel.org>
Subject: [PATCH 0/2] eIBRS fixes
Date: Tue, 20 May 2025 22:35:04 -0700 [thread overview]
Message-ID: <20250520-eibrs-fix-v1-0-91bacd35ed09@linux.intel.com> (raw)
Hi,
tip/x86/core that has restructured bugs.c including the recent ITS
mitigation has some disparities compared to upstream:
1. Spectre-v2 mitigation defaults to IBRS on eIBRS supported systems.
2. RSB stuffing mitigation for ITS is not allowed with eIBRS.
These couple of patches fixes the above issues.
Signed-off-by: Pawan Gupta <pawan.kumar.gupta@linux.intel.com>
---
Pawan Gupta (2):
x86/spectre_v2: Fix mitigation default on Intel
x86/its: Allow "=stuff" mitigation when eIBRS is enabled
arch/x86/kernel/cpu/bugs.c | 104 ++++++++++++++++++++++++++++++---------------
1 file changed, 69 insertions(+), 35 deletions(-)
---
base-commit: 8c57ca583ebfe879f99007d10c8f2b66baa18422
change-id: 20250520-eibrs-fix-6c452b697dbf
--
Thanks,
Pawan
next reply other threads:[~2025-05-21 5:35 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-05-21 5:35 Pawan Gupta [this message]
2025-05-21 5:35 ` [PATCH 1/2] x86/spectre_v2: Fix mitigation default on Intel Pawan Gupta
2025-05-21 10:03 ` [tip: x86/core] x86/bugs: Fix spectre_v2 " tip-bot2 for Pawan Gupta
2025-05-21 5:35 ` [PATCH 2/2] x86/its: Allow "=stuff" mitigation when eIBRS is enabled Pawan Gupta
2025-05-21 9:59 ` Borislav Petkov
2025-05-21 16:44 ` Pawan Gupta
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=20250520-eibrs-fix-v1-0-91bacd35ed09@linux.intel.com \
--to=pawan.kumar.gupta@linux.intel.com \
--cc=david.kaplan@amd.com \
--cc=hpa@zytor.com \
--cc=jpoimboe@kernel.org \
--cc=linux-kernel@vger.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 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®