From: Tony W Wang-oc <TonyWWang-oc@zhaoxin.com>
To: <tglx@linutronix.de>, <mingo@redhat.com>, <bp@alien8.de>,
<hpa@zytor.com>, <x86@kernel.org>, <luto@kernel.org>,
<pawan.kumar.gupta@linux.intel.com>, <peterz@infradead.org>,
<fenghua.yu@intel.com>, <vineela.tummalapalli@intel.com>,
<linux-kernel@vger.kernel.org>
Cc: <DavidWang@zhaoxin.com>, <CooperYan@zhaoxin.com>,
<QiyuanWang@zhaoxin.com>, <HerryYang@zhaoxin.com>
Subject: [PATCH v1 2/2] x86/speculation/swapgs: Exclude Zhaoxin CPUs from SWAPGS
Date: Fri, 17 Jan 2020 10:24:32 +0800 [thread overview]
Message-ID: <1579227872-26972-3-git-send-email-TonyWWang-oc@zhaoxin.com> (raw)
In-Reply-To: <1579227872-26972-1-git-send-email-TonyWWang-oc@zhaoxin.com>
New Zhaoxin family 7 CPUs are not affected by SWAPGS. So add these
CPUs to the cpu vulnerability whitelist.
Signed-off-by: Tony W Wang-oc <TonyWWang-oc@zhaoxin.com>
---
arch/x86/kernel/cpu/common.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/arch/x86/kernel/cpu/common.c b/arch/x86/kernel/cpu/common.c
index 6048bd3..ca4a0d2 100644
--- a/arch/x86/kernel/cpu/common.c
+++ b/arch/x86/kernel/cpu/common.c
@@ -1087,8 +1087,8 @@ static const __initconst struct x86_cpu_id cpu_vuln_whitelist[] = {
VULNWL_HYGON(X86_FAMILY_ANY, NO_MELTDOWN | NO_L1TF | NO_MDS | NO_SWAPGS | NO_ITLB_MULTIHIT),
/* Zhaoxin Family 7 */
- VULNWL(CENTAUR, 7, X86_MODEL_ANY, NO_SPECTRE_V2),
- VULNWL(ZHAOXIN, 7, X86_MODEL_ANY, NO_SPECTRE_V2),
+ VULNWL(CENTAUR, 7, X86_MODEL_ANY, NO_SPECTRE_V2 | NO_SWAPGS),
+ VULNWL(ZHAOXIN, 7, X86_MODEL_ANY, NO_SPECTRE_V2 | NO_SWAPGS),
{}
};
--
2.7.4
next prev parent reply other threads:[~2020-01-17 2:24 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-01-17 2:24 [PATCH v1 0/2] x86/bugs: Exclude Zhaoxin family 7 CPUs Tony W Wang-oc
2020-01-17 2:24 ` [PATCH v1 1/2] x86/speculation/spectre_v2: Exclude Zhaoxin CPUs from SPECTRE_V2 Tony W Wang-oc
2020-01-17 18:19 ` [tip: x86/pti] " tip-bot2 for Tony W Wang-oc
2020-01-17 2:24 ` Tony W Wang-oc [this message]
2020-01-17 18:19 ` [tip: x86/pti] x86/speculation/swapgs: Exclude Zhaoxin CPUs from SWAPGS vulnerability tip-bot2 for Tony W Wang-oc
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=1579227872-26972-3-git-send-email-TonyWWang-oc@zhaoxin.com \
--to=tonywwang-oc@zhaoxin.com \
--cc=CooperYan@zhaoxin.com \
--cc=DavidWang@zhaoxin.com \
--cc=HerryYang@zhaoxin.com \
--cc=QiyuanWang@zhaoxin.com \
--cc=bp@alien8.de \
--cc=fenghua.yu@intel.com \
--cc=hpa@zytor.com \
--cc=linux-kernel@vger.kernel.org \
--cc=luto@kernel.org \
--cc=mingo@redhat.com \
--cc=pawan.kumar.gupta@linux.intel.com \
--cc=peterz@infradead.org \
--cc=tglx@linutronix.de \
--cc=vineela.tummalapalli@intel.com \
--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.