From: Keir Fraser <keir.fraser@citrix.com>
Date: Wed, 27 Aug 2008 09:11:33 +0000 (+0100)
Subject: x86: Assert in_irq() while processing guest-bound interrupts.
X-Git-Tag: archive/raspbian/4.8.0-1+rpi1~1^2~14113^2~32
X-Git-Url: https://dgit.raspbian.org/?a=commitdiff_plain;h=bb2f3a7002b255a73f7afa8f62609197f51fe26b;p=xen.git

x86: Assert in_irq() while processing guest-bound interrupts.

Actually a fair amount of infrastructure is onvolved these days, and
we'd like subsystems we call into know that we're in IRQ context so
they can handle that or BUG/ASSERT if appropriate.

Signed-off-by: Keir Fraser <keir.fraser@citrix.com>
---

diff --git a/xen/arch/x86/irq.c b/xen/arch/x86/irq.c
index a9fa6ddf76..52a08d4645 100644
--- a/xen/arch/x86/irq.c
+++ b/xen/arch/x86/irq.c
@@ -63,7 +63,9 @@ asmlinkage void do_IRQ(struct cpu_user_regs *regs)
 
     if ( likely(desc->status & IRQ_GUEST) )
     {
+        irq_enter();
         __do_IRQ_guest(vector);
+        irq_exit();
         spin_unlock(&desc->lock);
         return;
     }