The patch titled Subject: kvm: ensure hard lockup detection is disabled by default has been removed from the -mm tree. Its filename was kvm-ensure-hard-lockup-detection-is-disabled-by-default.patch This patch was dropped because it was merged into mainline or a subsystem tree ------------------------------------------------------ From: Ulrich Obergfell <uobergfe@xxxxxxxxxx> Subject: kvm: ensure hard lockup detection is disabled by default Use watchdog_enable_hardlockup_detector() to set hard lockup detection's default value to false. It's risky to run this detection in a guest, as false positives are easy to trigger, especially if the host is overcommitted. Signed-off-by: Ulrich Obergfell <uobergfe@xxxxxxxxxx> Signed-off-by: Andrew Jones <drjones@xxxxxxxxxx> Signed-off-by: Don Zickus <dzickus@xxxxxxxxxx> Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> --- arch/x86/kernel/kvm.c | 8 ++++++++ 1 file changed, 8 insertions(+) diff -puN arch/x86/kernel/kvm.c~kvm-ensure-hard-lockup-detection-is-disabled-by-default arch/x86/kernel/kvm.c --- a/arch/x86/kernel/kvm.c~kvm-ensure-hard-lockup-detection-is-disabled-by-default +++ a/arch/x86/kernel/kvm.c @@ -35,6 +35,7 @@ #include <linux/slab.h> #include <linux/kprobes.h> #include <linux/debugfs.h> +#include <linux/nmi.h> #include <asm/timer.h> #include <asm/cpu.h> #include <asm/traps.h> @@ -499,6 +500,13 @@ void __init kvm_guest_init(void) #else kvm_guest_cpu_init(); #endif + + /* + * Hard lockup detection is enabled by default. Disable it, as guests + * can get false positives too easily, for example if the host is + * overcommitted. + */ + watchdog_enable_hardlockup_detector(false); } static noinline uint32_t __kvm_cpuid_base(void) _ Patches currently in -mm which might be from uobergfe@xxxxxxxxxx are origin.patch -- To unsubscribe from this list: send the line "unsubscribe mm-commits" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html