x86/mce: Use idtentry_nmi_enter/exit()

The recent fix for NMI vs. IRQ state tracking missed to apply the cure
to the MCE handler.

Fixes: ba1f2b2eaa2a ("x86/entry: Fix NMI vs IRQ state tracking")
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Borislav Petkov <bp@suse.de>
Link: https://lkml.kernel.org/r/87mu17ism2.fsf@nanos.tec.linutronix.de

diff --git a/arch/x86/kernel/cpu/mce/core.c b/arch/x86/kernel/cpu/mce/core.c
index f43a78b..fc4f8c0 100644 (file)
--- a/arch/x86/kernel/cpu/mce/core.c
+++ b/arch/x86/kernel/cpu/mce/core.c
@@ -1904,6 +1904,8 @@ void (*machine_check_vector)(struct pt_regs *) = unexpected_machine_check;
 
 static __always_inline void exc_machine_check_kernel(struct pt_regs *regs)
 {
+       bool irq_state;
+
        WARN_ON_ONCE(user_mode(regs));
 
        /*
@@ -1914,7 +1916,7 @@ static __always_inline void exc_machine_check_kernel(struct pt_regs *regs)
            mce_check_crashing_cpu())
                return;
 
-       nmi_enter();
+       irq_state = idtentry_enter_nmi(regs);
        /*
         * The call targets are marked noinstr, but objtool can't figure
         * that out because it's an indirect call. Annotate it.
@@ -1925,7 +1927,7 @@ static __always_inline void exc_machine_check_kernel(struct pt_regs *regs)
        if (regs->flags & X86_EFLAGS_IF)
                trace_hardirqs_on_prepare();
        instrumentation_end();
-       nmi_exit();
+       idtentry_exit_nmi(regs, irq_state);
 }
 
 static __always_inline void exc_machine_check_user(struct pt_regs *regs)