On Thu, Dec 11, 2014 at 01:16:52PM -0800, Andy Lutomirski wrote:
On Thu, Dec 11, 2014 at 1:10 PM, Paolo Bonzini pbonz...@redhat.com wrote:
On 11/12/2014 21:48, Andy Lutomirski wrote:
On 12/10/2014 07:07 PM, Marcelo Tosatti wrote:
On Thu, Dec 11, 2014 at 12:37:57AM +0100, Paolo Bonzini
On Thu, Dec 11, 2014 at 07:27:17PM -0200, Marcelo Tosatti wrote:
On Thu, Dec 11, 2014 at 01:16:52PM -0800, Andy Lutomirski wrote:
On Thu, Dec 11, 2014 at 1:10 PM, Paolo Bonzini pbonz...@redhat.com wrote:
On 11/12/2014 21:48, Andy Lutomirski wrote:
On 12/10/2014 07:07 PM, Marcelo
Signed-off-by: Marcelo Tosatti mtosa...@redhat.com
---
linux-headers/asm-x86/kvm.h |5 +
linux-headers/linux/kvm.h | 14 +++---
2 files changed, 8 insertions(+), 11 deletions(-)
Index: qemu/linux-headers/asm-x86/kvm.h
Add machine option and QMP commands to configure TSC deadline
timer advancement.
Signed-off-by: Marcelo Tosatti mtosa...@redhat.com
---
monitor.c | 15 ++
qapi-schema.json | 29 +++
qmp-commands.hx | 48
target-i386/kvm.c
Add command to set TSC deadline timer advancement.
This value will be subtracted from the expiration time
of the high resolution timer which emulates
TSC deadline timer.
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More
kvm_x86_ops-test_posted_interrupt() returns true/false depending
whether 'vector' is set.
Signed-off-by: Marcelo Tosatti mtosa...@redhat.com
Index: kvm/arch/x86/include/asm/kvm_host.h
===
--- kvm.orig/arch/x86/include/asm/kvm_host.h
See patches for details.
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See patches for details.
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the value
in say 500ns increments until avg cyclictest numbers stop decreasing.
Signed-off-by: Marcelo Tosatti mtosa...@redhat.com
Index: kvm/arch/x86/kvm/lapic.c
===
--- kvm.orig/arch/x86/kvm/lapic.c
+++ kvm/arch/x86/kvm/lapic.c
@@ -33,6
On Wed, Dec 10, 2014 at 12:10:04PM -0500, Rik van Riel wrote:
On 12/10/2014 12:06 PM, Marcelo Tosatti wrote:
kvm_x86_ops-test_posted_interrupt() returns true/false depending
whether 'vector' is set.
Is that good? Bad? How does this patch address the issue?
What issue?
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On Wed, Dec 10, 2014 at 06:09:19PM +0100, Paolo Bonzini wrote:
On 10/12/2014 18:04, Marcelo Tosatti wrote:
Please add an object property to the x86 CPU object. It can then be
configured with -global on the command line.
Don't want to allow individual values for different CPUs
On Wed, Dec 10, 2014 at 06:10:19PM +0100, Paolo Bonzini wrote:
On 10/12/2014 18:06, Marcelo Tosatti wrote:
See patches for details.
Difference between v1 and v2? Please fix your workflow.
Paolo
Wrong sender email address, that is all.
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On Wed, Dec 10, 2014 at 06:01:21PM +0100, Paolo Bonzini wrote:
On 10/12/2014 17:23, Marcelo Tosatti wrote:
Add machine option and QMP commands to configure TSC deadline
timer advancement.
Signed-off-by: Marcelo Tosatti mtosa...@redhat.com
---
monitor.c | 15
combination. One method is to measure the
average delay between apic_timer_fn and VM-entry.
Another method is to start with 1000ns, and increase the value
in say 500ns increments until avg cyclictest numbers stop decreasing.
Signed-off-by: Marcelo Tosatti mtosa...@redhat.com
What
the value
in say 500ns increments until avg cyclictest numbers stop decreasing.
Signed-off-by: Marcelo Tosatti mtosa...@redhat.com
Index: kvm/arch/x86/kvm/lapic.c
===
--- kvm.orig/arch/x86/kvm/lapic.c
+++ kvm/arch/x86/kvm/lapic.c
@@ -33,6
kvm_x86_ops-test_posted_interrupt() returns true/false depending
whether 'vector' is set.
Signed-off-by: Marcelo Tosatti mtosa...@redhat.com
Index: kvm/arch/x86/include/asm/kvm_host.h
===
--- kvm.orig/arch/x86/include/asm/kvm_host.h
On Wed, Dec 10, 2014 at 12:50:29PM -0500, Rik van Riel wrote:
On 12/10/2014 12:27 PM, Marcelo Tosatti wrote:
On Wed, Dec 10, 2014 at 12:10:04PM -0500, Rik van Riel wrote:
On 12/10/2014 12:06 PM, Marcelo Tosatti wrote:
kvm_x86_ops-test_posted_interrupt() returns true/false depending
On Wed, Dec 10, 2014 at 06:29:43PM +0100, Paolo Bonzini wrote:
On 10/12/2014 18:27, Marcelo Tosatti wrote:
On Wed, Dec 10, 2014 at 06:09:19PM +0100, Paolo Bonzini wrote:
On 10/12/2014 18:04, Marcelo Tosatti wrote:
Please add an object property to the x86 CPU object. It can
To test latency between TSC deadline timer
interrupt injection.
Signed-off-by: Marcelo Tosatti mtosa...@redhat.com
Index: kvm-unit-tests/config/config-x86-common.mak
===
--- kvm-unit-tests.orig/config/config-x86-common.mak2014
See patches for details.
v2:
- fix email address.
v3:
- use module parameter for configuration of value (Paolo/Radim)
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kvm_x86_ops-test_posted_interrupt() returns true/false depending
whether 'vector' is set.
Next patch makes use of this interface.
Signed-off-by: Marcelo Tosatti mtosa...@redhat.com
Index: kvm/arch/x86/include/asm/kvm_host.h
the value
in say 500ns increments until avg cyclictest numbers stop decreasing.
Signed-off-by: Marcelo Tosatti mtosa...@redhat.com
Index: kvm/arch/x86/kvm/lapic.c
===
--- kvm.orig/arch/x86/kvm/lapic.c
+++ kvm/arch/x86/kvm/lapic.c
@@ -33,6
On Thu, Dec 11, 2014 at 12:37:57AM +0100, Paolo Bonzini wrote:
On 10/12/2014 21:57, Marcelo Tosatti wrote:
For the hrtimer which emulates the tscdeadline timer in the guest,
add an option to advance expiration, and busy spin on VM-entry waiting
for the actual expiration time to elapse
On Wed, Dec 10, 2014 at 10:49:52PM +0100, Paolo Bonzini wrote:
On 10/12/2014 21:23, Marcelo Tosatti wrote:
To test latency between TSC deadline timer
interrupt injection.
Signed-off-by: Marcelo Tosatti mtosa...@redhat.com
Index: kvm-unit-tests/config/config-x86-common.mak
On Thu, Dec 04, 2014 at 02:53:26PM +0100, Paolo Bonzini wrote:
On 25/11/2014 21:24, Thomas Gleixner wrote:
On Tue, 25 Nov 2014, Rik van Riel wrote:
On 11/25/2014 12:21 PM, Marcelo Tosatti wrote:
Since lapic timer handler only wakes up a simple waitqueue,
it can be executed from
On Tue, Nov 25, 2014 at 06:38:04PM +0100, Paolo Bonzini wrote:
On 25/11/2014 18:21, Marcelo Tosatti wrote:
+
+ if (r == HRTIMER_RESTART) {
+ do {
+ ret = hrtimer_start_expires(data, HRTIMER_MODE_ABS);
+ if (ret == -ETIME
The problem:
On -RT, an emulated LAPIC timer instances has the following path:
1) hard interrupt
2) ksoftirqd is scheduled
3) ksoftirqd wakes up vcpu thread
4) vcpu thread is scheduled
This extra context switch introduces unnecessary latency in the
LAPIC path for a KVM guest.
The solution:
Since lapic timer handler only wakes up a simple waitqueue,
it can be executed from hardirq context.
Reduces average cyclictest latency by 3us.
Signed-off-by: Marcelo Tosatti mtosa...@redhat.com
---
arch/x86/kvm/lapic.c | 42 +++---
1 file changed, 39
context.
cyclictest command line:
# cyclictest -m -n -q -p99 -l 100 -h60 -D 1m
This patch reduces the average latency in my tests from 14us to 11us.
Signed-off-by: Marcelo Tosatti mtosa...@redhat.com
---
arch/arm/kvm/arm.c |4 ++--
arch/arm/kvm/psci.c
On Tue, Nov 25, 2014 at 01:57:37PM -0500, Rik van Riel wrote:
On 11/25/2014 12:21 PM, Marcelo Tosatti wrote:
The problem:
On -RT, an emulated LAPIC timer instances has the following path:
1) hard interrupt
2) ksoftirqd is scheduled
3) ksoftirqd wakes up vcpu thread
4) vcpu
On Thu, Nov 13, 2014 at 09:40:41AM +0100, Andrew Jones wrote:
On Thu, Nov 13, 2014 at 12:44:39AM -0200, Marcelo Tosatti wrote:
The periodic kvmclock sync can be an undesired source of latencies.
Signed-off-by: Marcelo Tosatti mtosa...@redhat.com
diff --git a/arch/x86/kvm/x86.c b
The periodic kvmclock sync can be an undesired source of latencies.
Signed-off-by: Marcelo Tosatti mtosa...@redhat.com
diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
index 0033df3..be56fd3 100644
--- a/arch/x86/kvm/x86.c
+++ b/arch/x86/kvm/x86.c
@@ -98,6 +98,9 @@ module_param(ignore_msrs
On Wed, Nov 05, 2014 at 11:46:42AM -0800, David Matlack wrote:
The new trace event records:
* the id of vcpu being updated
* the pvclock_vcpu_time_info struct being written to guest memory
This is useful for debugging pvclock bugs, such as the bug fixed by
[PATCH] kvm: x86: Fix kvm
On Wed, Nov 05, 2014 at 10:36:05AM +0100, Paolo Bonzini wrote:
On 05/11/2014 00:30, Marcelo Tosatti wrote:
+ /*
+* If the vcpus have matched TSCs and host clocksource is TSC,
+* perform request to enable masterclock.
+*
+* If the masterclock is enabled, perform request
On Wed, Nov 05, 2014 at 08:49:38PM +0100, Paolo Bonzini wrote:
On 05/11/2014 20:47, Paolo Bonzini wrote:
On 05/11/2014 19:19, Marcelo Tosatti wrote:
+ * If the vcpus have matched TSCs and host clocksource is TSC,
+ * perform request to enable masterclock
On Tue, Nov 04, 2014 at 06:10:34PM +0100, Paolo Bonzini wrote:
Extending the context we have:
if (vcpus_matched gtod-clock.vclock_mode == VCLOCK_TSC)
if (!ka-use_master_clock)
do_request = 1;
- if (!vcpus_matched ka-use_master_clock)
+
When the guest writes to the TSC, the masterclock TSC copy must be
updated as well along with the TSC_OFFSET update, otherwise a negative
tsc_timestamp is calculated at kvm_guest_time_update.
Signed-off-by: Marcelo Tosatti mtosa...@redhat.com
diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
-by: Marcelo Tosatti mtosa...@redhat.com
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When the guest writes to the TSC, the masterclock TSC copy must be updated
as well along with the TSC_OFFSET update, otherwise a
negative tsc_timestamp is calculated at kvm_guest_time_update.
Signed-off-by: Marcelo Tosatti mtosa...@redhat.com
diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86
On Fri, Oct 10, 2014 at 04:09:29PM +0300, Gleb Natapov wrote:
On Wed, Oct 08, 2014 at 04:22:31PM -0300, Marcelo Tosatti wrote:
Argh, lets try again:
skip_pinned = true
--
mark page dirty, keep spte intact
called from get dirty log path
On Wed, Oct 08, 2014 at 09:56:36AM +0300, Gleb Natapov wrote:
On Mon, Oct 06, 2014 at 02:19:32PM -0300, Marcelo Tosatti wrote:
On Sat, Oct 04, 2014 at 10:23:32AM +0300, Gleb Natapov wrote:
On Tue, Sep 09, 2014 at 12:28:11PM -0300, Marcelo Tosatti wrote:
On Mon, Jul 21, 2014 at 04:14:24PM
Argh, lets try again:
skip_pinned = true
--
mark page dirty, keep spte intact
called from get dirty log path.
skip_pinned = false
---
reload remote mmu
destroy pinned spte.
called from: dirty log enablement, rmap write protect
On Sat, Oct 04, 2014 at 10:23:32AM +0300, Gleb Natapov wrote:
On Tue, Sep 09, 2014 at 12:28:11PM -0300, Marcelo Tosatti wrote:
On Mon, Jul 21, 2014 at 04:14:24PM +0300, Gleb Natapov wrote:
On Wed, Jul 09, 2014 at 04:12:53PM -0300, mtosa...@redhat.com wrote:
Reload remote vcpus MMU from
On Mon, Oct 06, 2014 at 01:45:24PM +0900, Oscar Garcia wrote:
Hello,
I have a question about parallel vmexit calls, I would appreciate
any answer or suggestion.
I have a host with debian 7 (intel i7 - RAM 8GB), the guest OS is
also debian. I am running a program with some threads, every
Ping?
On Mon, Sep 22, 2014 at 02:19:14PM -0300, Marcelo Tosatti wrote:
On Tue, Sep 09, 2014 at 12:28:11PM -0300, Marcelo Tosatti wrote:
On Mon, Jul 21, 2014 at 04:14:24PM +0300, Gleb Natapov wrote:
On Wed, Jul 09, 2014 at 04:12:53PM -0300, mtosa...@redhat.com wrote:
Reload remote vcpus
On Tue, Sep 30, 2014 at 02:05:09PM +0200, Paolo Bonzini wrote:
Il 30/09/2014 09:59, Fengguang Wu ha scritto:
+--++++
| | 71056ae22d
|
On Fri, Sep 26, 2014 at 07:31:17AM +, Venkateswara Rao Nandigam wrote:
Hi Paolo,
As suggested by You, the following is the issue info. Is this something to be
fixed in host kernel?
Description:
FreeBSD 64bit(10.0) Guest freezes at booting on Linux KVM, host running
RHEL6.4 or
On Tue, Sep 09, 2014 at 12:41:27PM -0300, Marcelo Tosatti wrote:
On Tue, Jul 22, 2014 at 05:59:42AM +0800, Xiao Guangrong wrote:
On Jul 10, 2014, at 3:12 AM, mtosa...@redhat.com wrote:
Skip pinned shadow pages when selecting pages to zap.
It seems there is no way to prevent
On Tue, Sep 09, 2014 at 12:28:11PM -0300, Marcelo Tosatti wrote:
On Mon, Jul 21, 2014 at 04:14:24PM +0300, Gleb Natapov wrote:
On Wed, Jul 09, 2014 at 04:12:53PM -0300, mtosa...@redhat.com wrote:
Reload remote vcpus MMU from GET_DIRTY_LOG codepath, before
deleting a pinned spte
On Thu, Sep 18, 2014 at 06:24:57PM -0300, Marcelo Tosatti wrote:
Initilization of L2 guest with -cpu host, on L1 guest with -cpu host
triggers:
(qemu) KVM: entry failed, hardware error 0x7
...
nested_vmx_run: VMCS MSR_{LOAD,STORE} unsupported
Nested VMX MSR load/store support
On Fri, Sep 19, 2014 at 04:03:25PM -0700, David Matlack wrote:
vcpu ioctls can hang the calling thread if issued while a vcpu is
running.
There is a mutex per-vcpu, so thats expected, OK...
If we know ioctl is going to be rejected as invalid anyway,
we can fail before trying to take the
On Mon, Sep 22, 2014 at 11:29:16PM +0200, Paolo Bonzini wrote:
Il 22/09/2014 22:08, Marcelo Tosatti ha scritto:
This patch does not change functionality, it just makes invalid ioctls
fail faster.
Should not be executing vcpu ioctls without interrupt KVM_RUN in the
first place
On Mon, Sep 22, 2014 at 03:58:16PM -0700, David Matlack wrote:
Should not be executing vcpu ioctls without interrupt KVM_RUN in the
first place.
This patch is trying to be nice to code that isn't aware it's
probing kvm file descriptors. We saw long hangs with some generic
process
and disable function 0xA.
Signed-off-by: Marcelo Tosatti mtosa...@redhat.com
diff --git a/arch/x86/kvm/cpuid.c b/arch/x86/kvm/cpuid.c
index e28d798..976e3a5 100644
--- a/arch/x86/kvm/cpuid.c
+++ b/arch/x86/kvm/cpuid.c
@@ -774,6 +774,12 @@ void kvm_cpuid(struct kvm_vcpu *vcpu, u32 *eax, u32 *ebx
On Mon, Jul 21, 2014 at 04:14:24PM +0300, Gleb Natapov wrote:
On Wed, Jul 09, 2014 at 04:12:53PM -0300, mtosa...@redhat.com wrote:
Reload remote vcpus MMU from GET_DIRTY_LOG codepath, before
deleting a pinned spte.
Signed-off-by: Marcelo Tosatti mtosa...@redhat.com
---
arch/x86
On Tue, Jul 22, 2014 at 05:59:42AM +0800, Xiao Guangrong wrote:
On Jul 10, 2014, at 3:12 AM, mtosa...@redhat.com wrote:
Skip pinned shadow pages when selecting pages to zap.
It seems there is no way to prevent changing pinned spte on
zap-all path?
Xiao,
The way would be to reload
On Tue, Jul 22, 2014 at 05:55:20AM +0800, Xiao Guangrong wrote:
On Jul 10, 2014, at 3:12 AM, mtosa...@redhat.com wrote:
Reload remote vcpus MMU from GET_DIRTY_LOG codepath, before
deleting a pinned spte.
Signed-off-by: Marcelo Tosatti mtosa...@redhat.com
---
arch/x86/kvm/mmu.c
On Tue, Aug 26, 2014 at 12:08:32PM +0300, Pekka Enberg wrote:
On Sun, Aug 17, 2014 at 11:54 AM, Paolo Bonzini pbonz...@redhat.com wrote:
Il 15/08/2014 18:54, Marcelo Tosatti ha scritto:
Ping on integration.
It's been in kvm/next for a while, and is now in Linus's tree:
Does this make
On Mon, Aug 11, 2014 at 03:41:00PM +0800, xiexiangyou wrote:
hi,
In kvm_write_tsc() func of kvm, The TSCs will be synchronized unless the time
diff of creating vcpus small than one second.
However, In my enviroment, stress is large, the vcpu creating time is delay,
sometimes the diff time
Ping on integration.
On Tue, Jun 24, 2014 at 09:42:43AM +0200, Tomasz Grabiec wrote:
I've observed kvmclock being marked as unstable on a modern
single-socket system with a stable TSC and qemu-1.6.2 or qemu-2.0.0.
The culprit was failure in TSC matching because of overflow of
On Thu, Jul 17, 2014 at 08:18:03PM +0300, Nadav Amit wrote:
Small question if I may regarding kvm_mmu_pin_pages:
On 7/9/14, 10:12 PM, mtosa...@redhat.com wrote:
+
+static int kvm_mmu_pin_pages(struct kvm_vcpu *vcpu)
+{
+struct kvm_pinned_page_range *p;
+int r = 1;
+
+if
On Wed, Jul 16, 2014 at 12:18:37PM +0200, Paolo Bonzini wrote:
Il 16/07/2014 11:52, Igor Mammedov ha scritto:
There are buggy hosts in the wild that advertise invariant
TSC and as result host uses TSC as clocksource, but TSC on
such host sometimes sporadically jumps backwards.
This causes
On Fri, Jul 11, 2014 at 12:22:17PM +0800, Wanpeng Li wrote:
This bug can be trigger by L1 goes down directly w/ enable_shadow_vmcs.
[ 6413.158950] kvm: vmptrld (null)/7800 failed
[ 6413.158954] vmwrite error: reg 401e value 4 (err 1)
[ 6413.158957] CPU: 0 PID: 4840 Comm:
On Sun, Jun 22, 2014 at 04:35:24PM +0300, Avi Kivity wrote:
+ * Failure to instantiate pages will abort guest entry.
+ *
+ * Page frames should be pinned with get_page in advance.
+ *
+ * Pinning is not guaranteed while executing as L2 guest.
Does this undermine security?
PEBS writes should
On Wed, Jul 09, 2014 at 04:12:50PM -0300, mtosa...@redhat.com wrote:
Required by PEBS support as discussed at
Subject: [patch 0/4] [patch 0/5] Implement PEBS virtualization for Silvermont
Message-Id: 1401412327-14810-1-git-send-email-a...@firstfloor.org
Thread.
--
On Tue, Jul 01, 2014 at 09:27:19AM +0300, Gleb Natapov wrote:
The vcpu will never see a read-only spte because the VM-exit (due to
IPI) guarantees vcpu is outside of guest mode _before_ it is write
protected.
Right. Now I see why you absolutely have to send IPI in
On Mon, Jun 30, 2014 at 01:41:40PM +0200, Paolo Bonzini wrote:
Il 30/06/2014 10:43, Tomasz Grabiec ha scritto:
ping.
I was waiting for Marcelo to comment on this patch, but it looks
good. Thanks for the detailed commit message.
Paolo
Looks good.
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On Fri, Jun 20, 2014 at 01:09:12PM +0300, Gleb Natapov wrote:
On Thu, Jun 19, 2014 at 04:22:57PM -0300, Marcelo Tosatti wrote:
On Thu, Jun 19, 2014 at 10:21:16AM +0300, Gleb Natapov wrote:
On Wed, Jun 18, 2014 at 08:12:05PM -0300, mtosa...@redhat.com wrote:
Allow vcpus to pin spte
On Fri, Jun 20, 2014 at 01:46:10PM +0300, Gleb Natapov wrote:
On Thu, Jun 19, 2014 at 03:40:31PM -0300, Marcelo Tosatti wrote:
On Thu, Jun 19, 2014 at 11:17:19AM +0300, Gleb Natapov wrote:
On Wed, Jun 18, 2014 at 08:12:07PM -0300, mtosa...@redhat.com wrote:
Reload remote vcpus MMU from
On Sun, Jun 22, 2014 at 09:02:25PM +0200, Andi Kleen wrote:
First, it's not sufficient to pin the debug store area, you also
have to pin the guest page tables that are used to map the debug
store. But even if you do that, as soon as the guest fork()s, it
will create a new pgd which the
On Fri, Jun 20, 2014 at 02:15:10PM +0300, Gleb Natapov wrote:
On Thu, Jun 19, 2014 at 04:00:24PM -0300, Marcelo Tosatti wrote:
On Thu, Jun 19, 2014 at 12:20:32PM +0300, Gleb Natapov wrote:
CCing Marcelo,
On Wed, Jun 18, 2014 at 02:50:44PM +0800, Tang Chen wrote:
Hi Gleb
On Fri, Jun 20, 2014 at 05:26:22PM +0300, Gleb Natapov wrote:
On Fri, Jun 20, 2014 at 09:53:26AM -0300, Marcelo Tosatti wrote:
On Fri, Jun 20, 2014 at 02:15:10PM +0300, Gleb Natapov wrote:
On Thu, Jun 19, 2014 at 04:00:24PM -0300, Marcelo Tosatti wrote:
On Thu, Jun 19, 2014 at 12:20:32PM
On Fri, Jun 20, 2014 at 05:31:46PM -0300, Marcelo Tosatti wrote:
IIRC your shadow page pinning patch series support flushing of ptes
by mmu notifier by forcing MMU reload and, as a result, faulting in of
pinned pages during next entry. Your patch series does not pin pages
by elevating
On Thu, Jun 19, 2014 at 11:17:19AM +0300, Gleb Natapov wrote:
On Wed, Jun 18, 2014 at 08:12:07PM -0300, mtosa...@redhat.com wrote:
Reload remote vcpus MMU from GET_DIRTY_LOG codepath, before
deleting a pinned spte.
Signed-off-by: Marcelo Tosatti mtosa...@redhat.com
---
arch/x86
On Thu, Jun 19, 2014 at 11:01:06AM +0300, Avi Kivity wrote:
On 06/19/2014 02:12 AM, mtosa...@redhat.com wrote:
Allow vcpus to pin spte translations by:
1) Creating a per-vcpu list of pinned ranges.
2) On mmu reload request:
- Fault ranges.
- Mark sptes with a pinned bit.
On Thu, Jun 19, 2014 at 12:20:32PM +0300, Gleb Natapov wrote:
CCing Marcelo,
On Wed, Jun 18, 2014 at 02:50:44PM +0800, Tang Chen wrote:
Hi Gleb,
Thanks for the quick reply. Please see below.
On 06/18/2014 02:12 PM, Gleb Natapov wrote:
On Wed, Jun 18, 2014 at 01:50:00PM +0800,
On Thu, Jun 19, 2014 at 09:48:50AM +0300, Gleb Natapov wrote:
On Wed, Jun 18, 2014 at 08:12:06PM -0300, mtosa...@redhat.com wrote:
Request KVM_REQ_MMU_RELOAD when deleting sptes from MMU notifiers.
Keep pinned sptes intact if page aging.
Signed-off-by: Marcelo Tosatti mtosa
On Thu, Jun 19, 2014 at 10:21:16AM +0300, Gleb Natapov wrote:
On Wed, Jun 18, 2014 at 08:12:05PM -0300, mtosa...@redhat.com wrote:
Allow vcpus to pin spte translations by:
1) Creating a per-vcpu list of pinned ranges.
What if memory slot containing pinned range is going away?
On Wed, Jun 18, 2014 at 01:38:09PM +0200, Tomasz Grabiec wrote:
Hi,
I'm working on OSv (https://github.com/cloudius-systems/osv), a guest
operating system.
Right, please add a tsc_matched field to kvm_vcpu_arch (to keep
track per-vcpu) and then increment the global counter only once
per
On Thu, May 29, 2014 at 06:12:07PM -0700, Andi Kleen wrote:
{
struct kvm_pmu *pmu = vcpu-arch.pmu;
@@ -407,6 +551,20 @@ int kvm_pmu_set_msr(struct kvm_vcpu *vcpu, struct
msr_data *msr_info)
return 0;
}
break;
+ case
On Tue, Jun 10, 2014 at 12:22:07PM -0700, Andi Kleen wrote:
On Tue, Jun 10, 2014 at 03:04:48PM -0300, Marcelo Tosatti wrote:
On Thu, May 29, 2014 at 06:12:07PM -0700, Andi Kleen wrote:
{
struct kvm_pmu *pmu = vcpu-arch.pmu;
@@ -407,6 +551,20 @@ int kvm_pmu_set_msr(struct kvm_vcpu
On Mon, Jun 02, 2014 at 07:45:35PM +0300, Gleb Natapov wrote:
On Fri, May 30, 2014 at 09:24:24AM -0700, Andi Kleen wrote:
To avoid any problems with guest pages being swapped by the host we
pin the pages when the PEBS buffer is setup, by intercepting
that MSR.
It will avoid guest
the CPL cache,
which becomes a duplicate of the SS access rights cache.
This fixes doing KVM_IOCTL_SET_SREGS exactly after setting
CR0.PE=1 but before CS has been reloaded.
Signed-off-by: Paolo Bonzini pbonz...@redhat.com
Reviewed-by: Marcelo Tosatti mtosa...@redhat.com
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(until version 2.0) manually tracks the CPL.
Signed-off-by: Paolo Bonzini pbonz...@redhat.com
Reviewed-by: Marcelo Tosatti mtosa...@redhat.com
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not introduced by this patchset.
Reviewed-by: Marcelo Tosatti mtosa...@redhat.com
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On Wed, May 21, 2014 at 12:44:51PM +0200, Paolo Bonzini wrote:
The old stats contain information not available in the tracepoints.
Inspired by a patch from Marcelo Tosatti.
I avoided that because there is overlapping information.
Now you report kvm_exit count twice, for example.
Signed
On Wed, May 21, 2014 at 02:42:35PM +0200, Paolo Bonzini wrote:
Il 21/05/2014 14:27, Marcelo Tosatti ha scritto:
On Wed, May 21, 2014 at 12:44:51PM +0200, Paolo Bonzini wrote:
The old stats contain information not available in the tracepoints.
Inspired by a patch from Marcelo Tosatti.
I
The old stats contain information not available in the tracepoints.
Signed-off-by: Marcelo Tosatti mtosa...@redhat.com
diff --git a/scripts/kvm/kvm_stat b/scripts/kvm/kvm_stat
index 762544b..6ac3b21 100755
--- a/scripts/kvm/kvm_stat
+++ b/scripts/kvm/kvm_stat
@@ -493,12 +493,21
migration on the same foundation
in host as well as guest.
Remove this last phrase from the changelog please, the underlying bug is
not fixed on newer KVM versions.
Otherwise
Reviewed-by: Marcelo Tosatti mtosa...@redhat.com
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On Fri, May 09, 2014 at 01:53:32PM +0200, Paolo Bonzini wrote:
Il 09/05/2014 04:28, Marcelo Tosatti ha scritto:
Alex,
Unability to upgrade systems is not an excuse to fix the bug in the
wrong place.
It may be an excuse to fix the bug in both places though.
Paolo
Actually, its messy
On Mon, May 12, 2014 at 10:26:37PM +0200, Alexander Graf wrote:
On 09.05.14 13:53, Paolo Bonzini wrote:
Il 09/05/2014 04:28, Marcelo Tosatti ha scritto:
Alex,
Unability to upgrade systems is not an excuse to fix the bug in the
wrong place.
It may be an excuse to fix the bug in both
Updating system_time from the kernel clock once master clock
has been enabled can result in time backwards event, in case
kernel clock frequency is lower than TSC frequency.
Disable master clock in case its necessary to update it
from the resume path.
Signed-off-by: Marcelo Tosatti mtosa
Updating system_time from the kernel clock once master clock
has been enabled can result in time backwards event, in case
kernel clock frequency is lower than TSC frequency.
Disable master clock in case its necessary to update it
from the resume path.
Signed-off-by: Marcelo Tosatti mtosa
On Wed, May 14, 2014 at 11:09:36AM +0200, Paolo Bonzini wrote:
Il 14/05/2014 09:26, Marcelo Tosatti ha scritto:
Updating system_time from the kernel clock once master clock
has been enabled can result in time backwards event, in case
kernel clock frequency is lower than TSC frequency
Updating system_time from the kernel clock once master clock
has been enabled can result in time backwards event, in case
kernel clock frequency is lower than TSC frequency.
Disable master clock in case its necessary to update it
from the resume path.
Signed-off-by: Marcelo Tosatti mtosa
On Thu, May 08, 2014 at 09:21:29AM +0200, Alexander Graf wrote:
On 08.05.14 03:33, Marcelo Tosatti wrote:
On Mon, May 05, 2014 at 03:51:22PM +0200, Alexander Graf wrote:
When we migrate we ask the kernel about its current belief on what the guest
time would be. However, I've seen cases where
On Tue, May 06, 2014 at 09:18:27AM +0200, Alexander Graf wrote:
On 06.05.14 01:31, Marcelo Tosatti wrote:
On Mon, May 05, 2014 at 08:23:43PM -0300, Marcelo Tosatti wrote:
Hi Alexander,
On Mon, May 05, 2014 at 03:51:22PM +0200, Alexander Graf wrote:
When we migrate we ask the kernel about
On Tue, May 06, 2014 at 09:54:35PM +0200, Marcin Gibuła wrote:
Yes, and it isn't. Any ideas why it's not? This patch really just uses
the guest visible kvmclock time rather than the host view of it on
migration.
There is definitely something very broken on the host's side since it
does
Hi Alexander,
On Mon, May 05, 2014 at 03:51:22PM +0200, Alexander Graf wrote:
When we migrate we ask the kernel about its current belief on what the guest
time would be.
KVM_GET_CLOCK which returns the time in struct kvm_clock_data.
However, I've seen cases where the kvmclock guest
On Mon, May 05, 2014 at 08:26:04PM +0200, Marcin Gibuła wrote:
is it possible to have kvmclock jumping forward?
Because I've reproducible case when at about 1 per 20 vm restores, VM
freezes for couple of hours and then resumes with date few hundreds years
ahead. Happens only with kvmclock.
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