diff mbox series

[RFC,01/32] x86/traps: let common_interrupt() handle IRQ_MOVE_CLEANUP_VECTOR

Message ID 20221220063658.19271-2-xin3.li@intel.com
State New
Headers
Series x86: enable FRED for x86-64 |

Commit Message

Li, Xin3 Dec. 20, 2022, 6:36 a.m. UTC 
  From: "H. Peter Anvin (Intel)" <hpa@zytor.com>

IRQ_MOVE_CLEANUP_VECTOR is the only one of the system IRQ vectors that
is *below* FIRST_SYSTEM_VECTOR. It is a slow path, so just push it
into common_interrupt() just before the spurious interrupt handling.

Signed-off-by: H. Peter Anvin (Intel) <hpa@zytor.com>
Signed-off-by: Xin Li <xin3.li@intel.com>
---
 arch/x86/kernel/irq.c | 4 ++++
 1 file changed, 4 insertions(+)
diff mbox series

Patch

diff --git a/arch/x86/kernel/irq.c b/arch/x86/kernel/irq.c
index 766ffe3ba313..7e125fff45ab 100644
--- a/arch/x86/kernel/irq.c
+++ b/arch/x86/kernel/irq.c
@@ -248,6 +248,10 @@  DEFINE_IDTENTRY_IRQ(common_interrupt)
 	desc = __this_cpu_read(vector_irq[vector]);
 	if (likely(!IS_ERR_OR_NULL(desc))) {
 		handle_irq(desc, regs);
+#ifdef CONFIG_SMP
+	} else if (vector == IRQ_MOVE_CLEANUP_VECTOR) {
+		sysvec_irq_move_cleanup(regs);
+#endif
 	} else {
 		ack_APIC_irq();