Rusty Russell wrote:
On Thu, 2007-08-16 at 17:58 +0200, Laurent Vivier wrote:
[PATCH 3/3] introduce account modifiers mechanism in the kernel allowing a
module to modify the collected accounting for a given task. This
implementation
is based on the preempt_notifier. account_system_time() and
On Fri, 2007-08-17 at 01:26 -0400, Gregory Haskins wrote:
Hi Rusty,
Comments inline...
On Fri, 2007-08-17 at 11:25 +1000, Rusty Russell wrote:
Transport has several parts. What the hypervisor knows about (usually
shared memory and some interrupt mechanism and possibly DMA) and what
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Hello Rusty,
while playing with your virtio descriptor code, I realized that the desc_pages
data structure is not 64 bit safe. struct lguest_desc desc[NUM_DESCS] can be
smaller than a page, as struct lguest_desc is 24 bytes on 64bit systems. Lets
add a char padding to make the next page really
On Fri, 2007-08-17 at 09:35 +0200, Laurent Vivier wrote:
Rusty Russell wrote:
Hi Laurent,
Hi Rusty,
how are your puppies ?
They're getting a little fat, actually. Too many features ...
- remove PATCH 3, and add in task_struct a ktime vtime where we accumulate
guest time (by calling
Rusty Russell wrote:
On Fri, 2007-08-17 at 09:35 +0200, Laurent Vivier wrote:
Rusty Russell wrote:
Hi Laurent,
Hi Rusty,
how are your puppies ?
They're getting a little fat, actually. Too many features ...
- remove PATCH 3, and add in task_struct a ktime vtime where we accumulate
On Fri, 2007-08-17 at 10:22 +0200, Christian Borntraeger wrote:
Hello Rusty,
while playing with your virtio descriptor code, I realized that the
desc_pages
data structure is not 64 bit safe. struct lguest_desc desc[NUM_DESCS] can be
smaller than a page, as struct lguest_desc is 24 bytes
KVM updates vtime in task_struct to allow account_guest_time() to modify user,
system and guest time in cpustat accordingly.
Index: kvm/drivers/kvm/Kconfig
===
--- kvm.orig/drivers/kvm/Kconfig2007-08-17 10:24:46.0
Laurent Vivier wrote:
- remove PATCH 3, and add in task_struct a ktime vtime where we accumulate
guest time (by calling something like guest_enter() and guest_exit() from
the
virtualization engine), and when in account_system_time() we have cputime
vtime we substrate vtime from
Laurent Vivier wrote:
This is another way to compute guest time... I remove the account modifiers
mechanism and call directly account_guest_time() from account_system_time().
account_system_time() computes user, system and guest times according value
accumulated in vtime (a ktime_t) in
Laurent Vivier wrote:
KVM updates vtime in task_struct to allow account_guest_time() to modify user,
system and guest time in cpustat accordingly.
--- kvm.orig/drivers/kvm/Kconfig 2007-08-17 10:24:46.0 +0200
+++ kvm/drivers/kvm/Kconfig 2007-08-17 10:25:25.0 +0200
Avi Kivity wrote:
Laurent Vivier wrote:
- remove PATCH 3, and add in task_struct a ktime vtime where we
accumulate
guest time (by calling something like guest_enter() and guest_exit() from
the
virtualization engine), and when in account_system_time() we have cputime
vtime we
Am Freitag, 17. August 2007 schrieb Laurent Vivier:
The normal user/system accounting has the same issue, no? Whereever we
happen to land (kernel or user) gets the whole tick.
Yes... but perhaps I should rewrite this too ;-)
If you look further, you will see, that this was actually
Avi Kivity wrote:
[...]
The normal user/system accounting has the same issue, no? Whereever we
happen to land (kernel or user) gets the whole tick.
So I think it is okay to have the same limitation for guest time.
So this is how it looks like.
PATCH 1 and 2 are always a prerequisite.
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