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-rw-r--r--arch/x86/kernel/crash.c11
1 files changed, 11 insertions, 0 deletions
diff --git a/arch/x86/kernel/crash.c b/arch/x86/kernel/crash.c
index 2c1910f6717e..58f34319b29a 100644
--- a/arch/x86/kernel/crash.c
+++ b/arch/x86/kernel/crash.c
@@ -35,6 +35,7 @@
#include <asm/cpu.h>
#include <asm/reboot.h>
#include <asm/virtext.h>
+#include <asm/intel_pt.h>
/* Alignment required for elf header segment */
#define ELF_CORE_HEADER_ALIGN 4096
@@ -125,6 +126,11 @@ static void kdump_nmi_callback(int cpu, struct pt_regs *regs)
cpu_emergency_vmxoff();
cpu_emergency_svm_disable();
+ /*
+ * Disable Intel PT to stop its logging
+ */
+ cpu_emergency_stop_pt();
+
disable_local_APIC();
}
@@ -169,6 +175,11 @@ void native_machine_crash_shutdown(struct pt_regs *regs)
cpu_emergency_vmxoff();
cpu_emergency_svm_disable();
+ /*
+ * Disable Intel PT to stop its logging
+ */
+ cpu_emergency_stop_pt();
+
#ifdef CONFIG_X86_IO_APIC
/* Prevent crash_kexec() from deadlocking on ioapic_lock. */
ioapic_zap_locks();