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

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>

diff --git a/arch/arm/mm/proc-v7-bugs.c b/arch/arm/mm/proc-v7-bugs.c
index 9edb0c5eb3697b1c0d715ccff3c2808a9aab66d4..8bc7a2d6d6c7f96cda00741fe76faa148cee7b51 100644 (file)
--- a/arch/arm/mm/proc-v7-bugs.c
+++ b/arch/arm/mm/proc-v7-bugs.c
@@ -108,8 +108,7 @@ 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;
 }