cpu/SMT: State SMT is disabled even with nosmt and without "=force"
authorBorislav Petkov <bp@suse.de>
Thu, 4 Oct 2018 17:22:27 +0000 (19:22 +0200)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Mon, 25 Nov 2019 08:53:32 +0000 (09:53 +0100)
[ 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

index 0ed3e9d..c2573e8 100644 (file)
@@ -379,6 +379,7 @@ 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;
        }
 }