On Sun, 09 Sep 2007 14:05:13 +0300
Avi Kivity <avi-atKUWr5tajBWk0Htik3J/[EMAIL PROTECTED]> wrote:
> This release merges the pic/lapic/ioapic into mainline. While some
> known issues exist, we're now at the point where it's better to get
> some wider exposure rather than keep it alone on a branch.
>
> Some regressions are expected; please report them as they appear. A
> new qmeu option -no-kvm-irqchip is available to disable the new
> functionality.
(message seems to get stuck at gmane, sorry if it appears twice
eventually)
My experience so far:
On 32-bit Intel host, lapic fails to link due to missing 64bit
division. I tried the attached patch to fix the build, but Windows
XP froze before showing the booting screen. With -no-kvm-irqchip
they work, except the IE plugins like Flash & Java, which are broken
since kvm-29. With -no-kvm, qemu-system-x86_64 segfaults immediately.
Regards,
--
Jindrich Makovicka
--- lapic.c~ 2007-09-09 12:51:09.000000000 +0200
+++ lapic.c 2007-09-09 16:12:38.000000000 +0200
@@ -31,6 +31,7 @@
#include <asm/current.h>
#include <asm/apicdef.h>
#include <asm/atomic.h>
+#include <asm/div64.h>
#include "irq.h"
#define PRId64 "d"
@@ -511,8 +512,8 @@
} else
passed = ktime_sub(now, apic->timer.last_update);
- counter_passed = ktime_to_ns(passed) /
- (APIC_BUS_CYCLE_NS * apic->timer.divide_count);
+ counter_passed = div64_64(ktime_to_ns(passed),
+ (APIC_BUS_CYCLE_NS * apic->timer.divide_count));
tmcct -= counter_passed;
if (tmcct <= 0) {
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