From: Dmitry Osipenko dmitry.osipenko@collabora.com
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 --- arch/arm/mm/proc-v7-bugs.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-)
--- a/arch/arm/mm/proc-v7-bugs.c +++ b/arch/arm/mm/proc-v7-bugs.c @@ -109,8 +109,7 @@ static unsigned int spectre_v2_install_w #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; }