ARM: 9213/1: Print message about disabled Spectre workarounds only once

commit e4ced82deb5fb17222fb82e092c3f8311955b585 upstream.

Print the message about disabled Spectre workarounds only once. The
message is printed each time CPU goes out from idling state on NVIDIA
Tegra boards, causing storm in KMSG that makes system unusable.

Cc: stable@vger.kernel.org
Signed-off-by: Dmitry Osipenko <dmitry.osipenko@collabora.com>
Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/arch/arm/mm/proc-v7-bugs.c b/arch/arm/mm/proc-v7-bugs.c
index 8b78694d56b8877f8c4d8a5eb4541744109a0a72..35c4660e638abf36417082dc9492dad701581908 100644 (file)
--- a/arch/arm/mm/proc-v7-bugs.c
+++ b/arch/arm/mm/proc-v7-bugs.c
@@ -110,8 +110,7 @@ static unsigned int spectre_v2_install_workaround(unsigned int method)
 #else
 static unsigned int spectre_v2_install_workaround(unsigned int method)
 {
-       pr_info("CPU%u: Spectre V2: workarounds disabled by configuration\n",
-               smp_processor_id());
+       pr_info_once("Spectre V2: workarounds disabled by configuration\n");
 
        return SPECTRE_VULNERABLE;
 }