1 files changed, 34 insertions, 0 deletions
diff --git a/arch/x86/kernel/irq_work.c b/arch/x86/kernel/irq_work.c
new file mode 100644
index 000000000..890d4778c
--- /dev/null
+++ b/arch/x86/kernel/irq_work.c
@@ -0,0 +1,34 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * x86 specific code for irq_work
+ *
+ * Copyright (C) 2010 Red Hat, Inc., Peter Zijlstra
+ */
+
+#include <linux/kernel.h>
+#include <linux/irq_work.h>
+#include <linux/hardirq.h>
+#include <asm/apic.h>
+#include <asm/idtentry.h>
+#include <asm/trace/irq_vectors.h>
+#include <linux/interrupt.h>
+
+#ifdef CONFIG_X86_LOCAL_APIC
+DEFINE_IDTENTRY_SYSVEC(sysvec_irq_work)
+{
+	ack_APIC_irq();
+	trace_irq_work_entry(IRQ_WORK_VECTOR);
+	inc_irq_stat(apic_irq_work_irqs);
+	irq_work_run();
+	trace_irq_work_exit(IRQ_WORK_VECTOR);
+}
+
+void arch_irq_work_raise(void)
+{
+	if (!arch_irq_work_has_interrupt())
+		return;
+
+	apic->send_IPI_self(IRQ_WORK_VECTOR);
+	apic_wait_icr_idle();
+}
+#endif