diff --git a/arch/x86/entry/entry_32.S b/arch/x86/entry/entry_32.S
index b47b7b2238111fc9b4247553ca5e3cd62de71699..a8803aa3a07bfd57a78acb5e86c4ce5c9288f92e 100644
--- a/arch/x86/entry/entry_32.S
+++ b/arch/x86/entry/entry_32.S
@@ -765,6 +765,10 @@ SYM_CODE_START_LOCAL(asm_\cfunc)
 SYM_CODE_END(asm_\cfunc)
 .endm
 
+.macro idtentry_sysvec vector cfunc
+	idtentry \vector asm_\cfunc \cfunc has_error_code=0
+.endm
+
 /*
  * Include the defines which emit the idt entries which are shared
  * shared between 32 and 64 bit.
diff --git a/arch/x86/entry/entry_64.S b/arch/x86/entry/entry_64.S
index e54bcd3244f8a2666e93d3ddc0a067013fab3c8c..9b7183dac202c90f6bd7487424f3e0176b5b06be 100644
--- a/arch/x86/entry/entry_64.S
+++ b/arch/x86/entry/entry_64.S
@@ -541,6 +541,14 @@ SYM_CODE_END(\asmsym)
 	idtentry \vector asm_\cfunc \cfunc has_error_code=1
 .endm
 
+/*
+ * System vectors which invoke their handlers directly and are not
+ * going through the regular common device interrupt handling code.
+ */
+.macro idtentry_sysvec vector cfunc
+	idtentry \vector asm_\cfunc \cfunc has_error_code=0
+.endm
+
 /*
  * MCE and DB exceptions
  */
diff --git a/arch/x86/include/asm/idtentry.h b/arch/x86/include/asm/idtentry.h
index 341888184d1c9eea14e75ab05eb55142808a99ea..63f7b99703cf879d17d5913737a04c487ae6506a 100644
--- a/arch/x86/include/asm/idtentry.h
+++ b/arch/x86/include/asm/idtentry.h
@@ -6,6 +6,9 @@
 #include <asm/trapnr.h>
 
 #ifndef __ASSEMBLY__
+#include <linux/hardirq.h>
+
+#include <asm/irq_stack.h>
 
 void idtentry_enter_user(struct pt_regs *regs);
 void idtentry_exit_user(struct pt_regs *regs);
@@ -210,6 +213,78 @@ __visible noinstr void func(struct pt_regs *regs,			\
 									\
 static __always_inline void __##func(struct pt_regs *regs, u8 vector)
 
+/**
+ * DECLARE_IDTENTRY_SYSVEC - Declare functions for system vector entry points
+ * @vector:	Vector number (ignored for C)
+ * @func:	Function name of the entry point
+ *
+ * Declares three functions:
+ * - The ASM entry point: asm_##func
+ * - The XEN PV trap entry point: xen_##func (maybe unused)
+ * - The C handler called from the ASM entry point
+ *
+ * Maps to DECLARE_IDTENTRY().
+ */
+#define DECLARE_IDTENTRY_SYSVEC(vector, func)				\
+	DECLARE_IDTENTRY(vector, func)
+
+/**
+ * DEFINE_IDTENTRY_SYSVEC - Emit code for system vector IDT entry points
+ * @func:	Function name of the entry point
+ *
+ * idtentry_enter/exit() and irq_enter/exit_rcu() are invoked before the
+ * function body. KVM L1D flush request is set.
+ *
+ * Runs the function on the interrupt stack if the entry hit kernel mode
+ */
+#define DEFINE_IDTENTRY_SYSVEC(func)					\
+static void __##func(struct pt_regs *regs);				\
+									\
+__visible noinstr void func(struct pt_regs *regs)			\
+{									\
+	bool rcu_exit = idtentry_enter_cond_rcu(regs);			\
+									\
+	instrumentation_begin();					\
+	irq_enter_rcu();						\
+	kvm_set_cpu_l1tf_flush_l1d();					\
+	run_on_irqstack_cond(__##func, regs, regs);			\
+	irq_exit_rcu();							\
+	lockdep_hardirq_exit();						\
+	instrumentation_end();						\
+	idtentry_exit_cond_rcu(regs, rcu_exit);				\
+}									\
+									\
+static noinline void __##func(struct pt_regs *regs)
+
+/**
+ * DEFINE_IDTENTRY_SYSVEC_SIMPLE - Emit code for simple system vector IDT
+ *				   entry points
+ * @func:	Function name of the entry point
+ *
+ * Runs the function on the interrupted stack. No switch to IRQ stack and
+ * only the minimal __irq_enter/exit() handling.
+ *
+ * Only use for 'empty' vectors like reschedule IPI and KVM posted
+ * interrupt vectors.
+ */
+#define DEFINE_IDTENTRY_SYSVEC_SIMPLE(func)				\
+static __always_inline void __##func(struct pt_regs *regs);		\
+									\
+__visible noinstr void func(struct pt_regs *regs)			\
+{									\
+	bool rcu_exit = idtentry_enter_cond_rcu(regs);			\
+									\
+	instrumentation_begin();					\
+	__irq_enter_raw();						\
+	kvm_set_cpu_l1tf_flush_l1d();					\
+	__##func (regs);						\
+	__irq_exit_raw();						\
+	instrumentation_end();						\
+	idtentry_exit_cond_rcu(regs, rcu_exit);				\
+}									\
+									\
+static __always_inline void __##func(struct pt_regs *regs)
+
 /**
  * DECLARE_IDTENTRY_XENCB - Declare functions for XEN HV callback entry point
  * @vector:	Vector number (ignored for C)
@@ -361,6 +436,10 @@ __visible noinstr void func(struct pt_regs *regs,			\
 #define DECLARE_IDTENTRY_IRQ(vector, func)				\
 	idtentry_irq vector func
 
+/* System vector entries */
+#define DECLARE_IDTENTRY_SYSVEC(vector, func)				\
+	idtentry_sysvec vector func
+
 #ifdef CONFIG_X86_64
 # define DECLARE_IDTENTRY_MCE(vector, func)				\
 	idtentry_mce_db vector asm_##func func