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Message-Id: <20230128003751.141317-1-srivatsa@csail.mit.edu>
Date: Fri, 27 Jan 2023 16:37:51 -0800
From: "Srivatsa S. Bhat" <srivatsa@...il.mit.edu>
To: tglx@...utronix.de, mingo@...hat.com, x86@...nel.org,
peterz@...radead.org, hpa@...or.com
Cc: bp@...en8.de, dave.hansen@...ux.intel.com,
rafael.j.wysocki@...el.com, paulmck@...nel.org, jgross@...e.com,
seanjc@...gle.com, thomas.lendacky@....com,
linux-kernel@...r.kernel.org, imammedo@...hat.com,
amakhalov@...are.com, ganb@...are.com, ankitja@...are.com,
bordoloih@...are.com, keerthanak@...are.com, blamoreaux@...are.com,
namit@...are.com, wyes.karny@....com, lewis.carroll@....com,
pv-drivers@...are.com, virtualization@...ts.linux-foundation.org,
kvm@...r.kernel.org, xen-devel@...ts.xenproject.org,
srivatsa@...il.mit.edu
Subject: [PATCH] x86/hotplug: Remove incorrect comment about mwait_play_dead()
From: "Srivatsa S. Bhat (VMware)" <srivatsa@...il.mit.edu>
The comment that says mwait_play_dead() returns only on failure is a
bit misleading because mwait_play_dead() could actually return for
valid reasons (such as mwait not being supported by the platform) that
do not indicate a failure of the CPU offline operation. So, remove the
comment.
Suggested-by: Thomas Gleixner <tglx@...utronix.de>
Signed-off-by: Srivatsa S. Bhat (VMware) <srivatsa@...il.mit.edu>
---
arch/x86/kernel/smpboot.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/x86/kernel/smpboot.c b/arch/x86/kernel/smpboot.c
index 55cad72715d9..9013bb28255a 100644
--- a/arch/x86/kernel/smpboot.c
+++ b/arch/x86/kernel/smpboot.c
@@ -1833,7 +1833,7 @@ void native_play_dead(void)
play_dead_common();
tboot_shutdown(TB_SHUTDOWN_WFS);
- mwait_play_dead(); /* Only returns on failure */
+ mwait_play_dead();
if (cpuidle_play_dead())
hlt_play_dead();
}
--
2.25.1
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