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 0381e14954865b0a7658065b7c31322cb5af7eb3..40fb2900038edc8bbd4f9c7ebbdf6d76f7cbb463 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;
 }