From 85f0796b14aff77242807615194b4ea68e558681 Mon Sep 17 00:00:00 2001
From: Avi Kivity <avi@cloudius-systems.com>
Date: Mon, 11 Feb 2013 19:37:22 +0200
Subject: [PATCH] apic: mask LVT0 interrupts
This avoids spurious interrupts from the PIC (even though it has been
disabled).
---
arch/x64/apic.cc | 2 ++
1 file changed, 2 insertions(+)
diff --git a/arch/x64/apic.cc b/arch/x64/apic.cc
index e067a8d7c..e3cb8da92 100644
--- a/arch/x64/apic.cc
+++ b/arch/x64/apic.cc
@@ -22,6 +22,7 @@ apic_driver::~apic_driver()
void apic_driver::software_enable()
{
+ write(apicreg::LVT0, 0);
write(apicreg::SPIV, 0x1ff); // FIXME: allocate real vector
}
@@ -29,6 +30,7 @@ x2apic::x2apic()
: apic_driver()
{
enable();
+ software_enable();
}
void x2apic::init_on_ap()
--
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