From: Fenghua Yu <fenghua.yu@intel.com>
To: "Thomas Gleixner" <tglx@linutronix.de>,
"Ingo Molnar" <mingo@redhat.com>,
"Borislav Petkov" <bp@alien8.de>,
"Peter Zijlstra" <peterz@infradead.org>,
"Randy Dunlap" <rdunlap@infradead.org>,
"Tony Luck" <tony.luck@intel.com>,
"Xiaoyao Li " <xiaoyao.li@intel.com>,
"Ravi V Shankar" <ravi.v.shankar@intel.com>
Cc: "linux-kernel" <linux-kernel@vger.kernel.org>,
"x86" <x86@kernel.org>, Fenghua Yu <fenghua.yu@intel.com>
Subject: [PATCH 3/4] Documentation/admin-guide: Change doc for bus lock ratelimit
Date: Mon, 19 Apr 2021 21:49:57 +0000 [thread overview]
Message-ID: <20210419214958.4035512-4-fenghua.yu@intel.com> (raw)
In-Reply-To: <20210419214958.4035512-1-fenghua.yu@intel.com>
Since bus lock rate limit changes the split_lock_detect parameter,
update the documentation for the change.
Signed-off-by: Fenghua Yu <fenghua.yu@intel.com>
Reviewed-by: Tony Luck <tony.luck@intel.com>
---
Documentation/admin-guide/kernel-parameters.txt | 8 ++++++++
1 file changed, 8 insertions(+)
diff --git a/Documentation/admin-guide/kernel-parameters.txt b/Documentation/admin-guide/kernel-parameters.txt
index f5892896bedc..c13bbfd8c5aa 100644
--- a/Documentation/admin-guide/kernel-parameters.txt
+++ b/Documentation/admin-guide/kernel-parameters.txt
@@ -5154,6 +5154,14 @@
exception. Default behavior is by #AC if
both features are enabled in hardware.
+ ratelimit:N -
+ Set system wide rate limit to N bus locks
+ per second for bus lock detection.
+ 0 < N <= 1000.
+
+ N/A for split lock detection.
+
+
If an #AC exception is hit in the kernel or in
firmware (i.e. not while executing in user mode)
the kernel will oops in either "warn" or "fatal"
--
2.31.1
next prev parent reply other threads:[~2021-04-19 21:50 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-04-19 21:49 [PATCH 0/4] x86/bus_lock: Set rate limit for bus lock Fenghua Yu
2021-04-19 21:49 ` [PATCH 1/4] Documentation/x86: Add buslock.rst Fenghua Yu
2021-05-18 14:39 ` Thomas Gleixner
2021-05-18 14:44 ` [tip: x86/splitlock] " tip-bot2 for Fenghua Yu
2021-08-18 1:59 ` Xiaoyao Li
2021-08-18 15:36 ` Fenghua Yu
2021-08-19 3:36 ` Xiaoyao Li
2021-04-19 21:49 ` [PATCH 2/4] x86/bus_lock: Set rate limit for bus lock Fenghua Yu
2021-05-18 14:44 ` [tip: x86/splitlock] " tip-bot2 for Fenghua Yu
2021-04-19 21:49 ` Fenghua Yu [this message]
2021-05-18 14:44 ` [tip: x86/splitlock] Documentation/admin-guide: Add bus lock ratelimit tip-bot2 for Fenghua Yu
2021-04-19 21:49 ` [PATCH 4/4] Documentation/x86: Add ratelimit in buslock.rst Fenghua Yu
2021-05-18 14:44 ` [tip: x86/splitlock] " tip-bot2 for Fenghua Yu
2021-05-17 18:46 ` [PATCH 0/4] x86/bus_lock: Set rate limit for bus lock Fenghua Yu
2021-05-17 19:01 ` Thomas Gleixner
2021-05-17 19:05 ` Fenghua Yu
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