Dong, Eddie wrote:
Avi Kivity wrote:
Dong, Eddie wrote:
Avi:
Any comments to this patch? Seems not in yet.
The sequence is apic-timer-TMCCT.patch,
apic-timer-last5.patch and apic-timer-pending4.patch.
thx,eddie
I'd like to get guest smp in first...
Avi Kivity wrote:
Dong, Eddie wrote:
Avi Kivity wrote:
Dong, Eddie wrote:
Avi:
Any comments to this patch? Seems not in yet.
The sequence is apic-timer-TMCCT.patch,
apic-timer-last5.patch and apic-timer-pending4.patch.
thx,eddie
I'd like to get guest smp in first...
Avi Kivity wrote:
Dong, Eddie wrote:
Avi:
Any comments to this patch? Seems not in yet.
The sequence is apic-timer-TMCCT.patch,
apic-timer-last5.patch and apic-timer-pending4.patch.
thx,eddie
I'd like to get guest smp in first...
Avi:
We have got SMP Linux up too,
Dong, Eddie wrote:
Avi:
Any comments to this patch? Seems not in yet.
The sequence is apic-timer-TMCCT.patch, apic-timer-last5.patch and
apic-timer-pending4.patch.
thx,eddie
I'd like to get guest smp in first...
--
error compiling committee.c: too many arguments to
:25
To: Avi Kivity
Cc: kvm-devel
Subject: Re: [kvm-devel] add back pending timer irqs for
kernel APIC timer
Here are rebased and fixed patches, please check.
thanks, eddie
apic-timer-tmcct.patch
Description: apic-timer-tmcct.patch
apic-timer-last5.patch
Description: apic-timer-last5.patch
Dong, Eddie wrote:
Avi Kivity wrote:
Dong, Eddie wrote:
Add back pending irqs for apic timer to get precise guest
APIC timer interrupt.
Can you explain the problem and the solution in more detail?
Today guest sleep 10 seconds only get about 5-6 seconds in
Dong, Eddie wrote:
[EMAIL PROTECTED] wrote:
Add back pending irqs for apic timer to get precise guestAPIC
timer interrupt.
Signed-off-by: Yaozu (Eddie) Dong [EMAIL PROTECTED]
a typo, please use this one.
With above patches, now guest timer is much accurate! sleep 60
On Mon, 2007-08-13 at 11:50 +0300, Avi Kivity wrote:
This patch keep track of the pending irqs and inject them back to guest
eventually
even the guest may be descheduled. This is also what we did in Xen.
BTW, This policy will also be applied to future kernel PIT, I just do it
step by
Note that my old lapic branch did a similar tdf thing as well and it
worked quite nicely, so I think Eddie is on the right track with
adding this.
I just copied the whole APIC timer stuff from your old patch at that
time as TODO. maybe I missed something :-(
Time virtualization has quit a
Avi Kivity wrote:
What does pt mean in this context? pending timer?
Suggested descriptive names below.
Periodic timer. Comments added.
if (apic_lvtt_period(apic)) {
-u32 offset;
-u32 tmict = apic_get_reg(apic, APIC_TMICT);
-
-offset =
[EMAIL PROTECTED] wrote:
kvm_pt_update_irq is within intr_assist where host IRQ is disabled.
It can be updated only after we return to guest.
What if it runs on another cpu?
This case will be forbidden in next patch. We need to remove
apic-lock too.
To avoid confuse, I mean hrtimer
Dong, Eddie wrote:
Note that my old lapic branch did a similar tdf thing as well and it
worked quite nicely, so I think Eddie is on the right track with
adding this.
I just copied the whole APIC timer stuff from your old patch at that
time as TODO. maybe I missed something :-(
Time
Dong, Eddie wrote:
[EMAIL PROTECTED] wrote:
kvm_pt_update_irq is within intr_assist where host IRQ is disabled.
It can be updated only after we return to guest.
What if it runs on another cpu?
This case will be forbidden in next patch. We need to remove
apic-lock too.
Avi Kivity wrote:
2: stop hrtimer when the guest is descheduled to increase
scalibility and remove apic-lock.
Why is this important? An hrtimer is just an entry on a list, no?
Does it need an IRQ to drive? If we have ten VMs, we got extra 10 IRQs.
Do you mean, just if the guest is
Dong, Eddie wrote:
Avi Kivity wrote:
2: stop hrtimer when the guest is descheduled to increase
scalibility and remove apic-lock.
Why is this important? An hrtimer is just an entry on a list, no?
Does it need an IRQ to drive? If we have ten VMs, we got extra 10 IRQs.
Here are rebased and fixed patches, please check.
thanks, eddie
commit 9b1a9ad955d9ac44ee6e60b4a565edf044d3dcc7
Author: root [EMAIL PROTECTED](none)
Date: Fri Aug 10 22:38:59 2007 +0800
APIC_TMCCT is a dynamically running count which always
need to be recalculated at the time it is
[EMAIL PROTECTED] wrote:
Add back pending irqs for apic timer to get precise guestAPIC
timer interrupt.
Signed-off-by: Yaozu (Eddie) Dong [EMAIL PROTECTED]
a typo, please use this one.
With above patches, now guest timer is much accurate! sleep 60
get exactly 60 seconds in
Add back pending irqs for apic timer to get precise guest
APIC timer interrupt.
Signed-off-by: Yaozu (Eddie) Dong [EMAIL PROTECTED]
diff --git a/drivers/kvm/irq.h b/drivers/kvm/irq.h
index ed6d20a..8867c82 100644
--- a/drivers/kvm/irq.h
+++ b/drivers/kvm/irq.h
@@ -110,7 +110,7
Dong, Eddie wrote:
Add back pending irqs for apic timer to get precise guest
APIC timer interrupt.
Can you explain the problem and the solution in more detail?
-
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Avi Kivity wrote:
Dong, Eddie wrote:
Add back pending irqs for apic timer to get precise guest
APIC timer interrupt.
Can you explain the problem and the solution in more detail?
Today guest sleep 10 seconds only get about 5-6 seconds in host time.
A design philosiphy in various
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