Please send in any agenda items you are interested in covering.
thanks,
-chris
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On 04/13/2010 06:07 AM, Xiao Guangrong wrote:
And i found the commit 87778d60ee:
|KVM: MMU: Segregate mmu pages created with different cr4.pge settings
|
|Don't allow a vcpu with cr4.pge cleared to use a shadow page created with
|cr4.pge set; this might cause a cr3 switch not to
On 04/13/2010 03:50 AM, Zhang, Xiantao wrote:
Avi Kivity wrote:
On 04/12/2010 05:04 AM, Zhang, Xiantao wrote:
What was the performance hit? What was your I/O setup (image
format, using aio?)
The issue only happens when vcpu number is over-committed(e.g.
BTW, just from my curiosity, are there any cases in which we use such
huge
number of pages currently?
ALIGN(memslot-npages, BITS_PER_LONG) / 8;
More than G pages need really big memory!
-- We are assuming some special cases like short int size?
No, int is 32 bits, but memslot-npages is not
Currently both SVM and VMX have their own DR handling code. Move it to
x86.c.
Changelog:
v1-v2
- kvm_set_dr() always return 1 in a case of error
Signed-off-by: Gleb Natapov g...@redhat.com
diff --git a/arch/x86/include/asm/kvm_host.h b/arch/x86/include/asm/kvm_host.h
index 0c49c88..5d5e0a9
On 04/13/2010 10:03 AM, Takuya Yoshikawa wrote:
It's better to limit memory slots to something that can be handled by
everything, then. 2^31 pages is plenty. Return -EINVAL if the slot is
too large.
I agree with that, so we make this patch pending to fix like that?
-- or should make a new
May be I am missing something here, but it seams we can call
kvm_mmu_pte_write() directly from emulator_cmpxchg_emulated()
instead of passing mmu_only down to emulator_write_emulated_onepage()
and call it there.
Signed-off-by: Gleb Natapov g...@redhat.com
diff --git a/arch/x86/kvm/x86.c
On 04/13/2010 10:21 AM, Gleb Natapov wrote:
May be I am missing something here, but it seams we can call
kvm_mmu_pte_write() directly from emulator_cmpxchg_emulated()
instead of passing mmu_only down to emulator_write_emulated_onepage()
and call it there.
@@ -3460,7 +3444,9 @@ static int
On 04/13/2010 10:26 AM, Gleb Natapov wrote:
On Tue, Apr 13, 2010 at 10:24:40AM +0300, Avi Kivity wrote:
On 04/13/2010 10:21 AM, Gleb Natapov wrote:
May be I am missing something here, but it seams we can call
kvm_mmu_pte_write() directly from emulator_cmpxchg_emulated()
instead of
On Tue, Apr 13, 2010 at 10:35:53AM +0300, Avi Kivity wrote:
On 04/13/2010 10:26 AM, Gleb Natapov wrote:
On Tue, Apr 13, 2010 at 10:24:40AM +0300, Avi Kivity wrote:
On 04/13/2010 10:21 AM, Gleb Natapov wrote:
May be I am missing something here, but it seams we can call
kvm_mmu_pte_write()
Avi Kivity wrote:
On 04/12/2010 01:58 PM, Yoshiaki Tamura wrote:
Is it necessary to update migration and vga bitmaps?
We can simply update the master bitmap, and update the migration and vga
bitmaps only when they need it. That can be done in a different patch.
Let me explain the role of
On 04/13/2010 11:01 AM, Yoshiaki Tamura wrote:
Avi Kivity wrote:
On 04/12/2010 01:58 PM, Yoshiaki Tamura wrote:
Is it necessary to update migration and vga bitmaps?
We can simply update the master bitmap, and update the migration
and vga
bitmaps only when they need it. That can be done in a
Avi Kivity wrote:
On 04/13/2010 11:01 AM, Yoshiaki Tamura wrote:
Avi Kivity wrote:
On 04/12/2010 01:58 PM, Yoshiaki Tamura wrote:
Is it necessary to update migration and vga bitmaps?
We can simply update the master bitmap, and update the migration
and vga
bitmaps only when they need it. That
use correct 64 bit mode inline assembly constraints
use a canonical form address when writing to the MSR_KERNEL_GS_BASE MSR
Signed-off-by: Naphtali Sprei nsp...@redhat.com
---
kvm/user/test/x86/msr.c | 14 --
1 files changed, 8 insertions(+), 6 deletions(-)
diff --git
On Wed, Apr 07, 2010 at 09:59:10AM -0400, Jeff Dike wrote:
vq_memory_access_ok needs to check whether mem == NULL
Signed-off-by: Jeff Dike jd...@linux.intel.com
Signed-off-by: Michael S. Tsirkin m...@redhat.com
This was already queued by me, you do not need to
fill Dave's inbox with vhost
On Tue, Apr 13, 2010 at 06:01:21PM +0300, Michael S. Tsirkin wrote:
On Wed, Apr 07, 2010 at 09:59:10AM -0400, Jeff Dike wrote:
vq_memory_access_ok needs to check whether mem == NULL
Signed-off-by: Jeff Dike jd...@linux.intel.com
Signed-off-by: Michael S. Tsirkin m...@redhat.com
This
On Tue, Apr 13, 2010 at 09:53:07AM +0800, Xiao Guangrong wrote:
Marcelo Tosatti wrote:
Xiao,
Did you actually see this codepath as being performance sensitive?
Actually, i not run benchmarks to contrast the performance before this patch
and after this patch.
I'd prefer to
On Tue, Apr 13, 2010 at 09:34:14AM +0800, Xiao Guangrong wrote:
Marcelo Tosatti wrote:
@@ -1483,8 +1483,8 @@ static int mmu_zap_unsync_children(struct kvm *kvm,
for_each_sp(pages, sp, parents, i) {
kvm_mmu_zap_page(kvm, sp);
Gleb Natapov wrote:
Currently both SVM and VMX have their own DR handling code. Move it to
x86.c.
Changelog:
v1-v2
- kvm_set_dr() always return 1 in a case of error
Signed-off-by: Gleb Natapov g...@redhat.com
Acked-by: Jan Kiszka jan.kis...@siemens.com
diff --git
On Tue, Apr 13, 2010 at 10:05:23AM +0300, Gleb Natapov wrote:
Currently both SVM and VMX have their own DR handling code. Move it to
x86.c.
Changelog:
v1-v2
- kvm_set_dr() always return 1 in a case of error
Signed-off-by: Gleb Natapov g...@redhat.com
Applied, thanks.
--
To
Signed-off-by: Christoph Hellwig h...@lst.de
Index: linux-2.6/drivers/vhost/net.c
===
--- linux-2.6.orig/drivers/vhost/net.c 2010-04-05 21:13:24.196004388 +0200
+++ linux-2.6/drivers/vhost/net.c 2010-04-05 21:13:32.726004109
On Tue, Apr 13, 2010 at 9:08 PM, jvrao jv...@linux.vnet.ibm.com wrote:
jvrao wrote:
Alexander Graf wrote:
On 12.04.2010, at 13:58, Jamie Lokier wrote:
Mohammed Gamal wrote:
On Mon, Apr 12, 2010 at 12:29 AM, Jamie Lokier ja...@shareable.org
wrote:
Javier Guerra Giraldez wrote:
On Sat, Apr
On Tue, Apr 13, 2010 at 1:24 AM, pradeep psuri...@linux.vnet.ibm.com wrote:
Lucas
Any comments??
No pradeep, Sudhir's comments are very reasonable, please implement
the changes he suggested and re-send the patch, I am going to do some
testing on it on my local systems and then commit it
hi,
I am trying to use kvmtrace but it looks like its no longer used. in
kvm_main.c it is returning -EOPNOTSUP.
kvmtrace -V -D test -o mykvmtest
does not seem to do anything.
is it no longer used? is there any better way of debugging kvm?
Thank you.
Avi Kivity wrote:
On 04/13/2010 03:50 AM, Zhang, Xiantao wrote:
Avi Kivity wrote:
On 04/12/2010 05:04 AM, Zhang, Xiantao wrote:
What was the performance hit? What was your I/O setup (image
format, using aio?)
The issue only happens when vcpu number is over-committed(e.g.
Marcelo Tosatti wrote:
I'd prefer to not touch it.
This patch avoids walk all parents and i think this overload is really
unnecessary.
It has other tricks in this codepath but i not noticed? :-)
My point is that there is no point in optimizing something unless its
performance
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