[PATCH 4.19 110/220] cpu/SMT: State SMT is disabled even with nosmt and without "=force"

Greg Kroah-Hartman
2019-11-22T11:00:53Z

From: Borislav Petkov <bp@suse.de>

[ Upstream commit d0e7d14455d41163126afecd0fcce935463cc512 ]

When booting with "nosmt=force" a message is issued into dmesg to
confirm that SMT has been force-disabled but such a message is not
issued when only "nosmt" is on the kernel command line.

Fix that.

Signed-off-by: Borislav Petkov <bp@suse.de>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/20181004172227.10094-1-bp@alien8.de
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
kernel/cpu.c | 1 +
1 file changed, 1 insertion(+)

diff --git a/kernel/cpu.c b/kernel/cpu.c
index 9bb57ce57d98d..8d6b8b5493f9f 100644
--- a/kernel/cpu.c
+++ b/kernel/cpu.c
@@ -375,6 +375,7 @@ void __init cpu_smt_disable(bool force)
pr_info("SMT: Force disabled\n");
cpu_smt_control = CPU_SMT_FORCE_DISABLED;
} else {
+ pr_info("SMT: disabled\n");
cpu_smt_control = CPU_SMT_DISABLED;
}
}
--
2.20.1