From: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Date: Tue, 3 Mar 2015 21:12:12 +0000 (-0500)
Subject: x86/xen/apic: WARN with details.
X-Git-Tag: v4.1-rc1~111^2~9
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=b3b06c7eb7820cea5c15f9faa4964044284c5399;p=karo-tx-linux.git

x86/xen/apic: WARN with details.

We should not be writting to the APIC registers under
Xen PV. But if we do instead of just giving an blanket
warning - include some details to help troubleshoot.

Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
---

diff --git a/arch/x86/xen/apic.c b/arch/x86/xen/apic.c
index 5e0ecaf4c336..70e060ad879a 100644
--- a/arch/x86/xen/apic.c
+++ b/arch/x86/xen/apic.c
@@ -73,7 +73,7 @@ static u32 xen_apic_read(u32 reg)
 static void xen_apic_write(u32 reg, u32 val)
 {
 	/* Warn to see if there's any stray references */
-	WARN_ON(1);
+	WARN(1,"register: %x, value: %x\n", reg, val);
 }
 
 static u64 xen_apic_icr_read(void)