-Original Message-
From: Avi Kivity [mailto:a...@redhat.com]
Sent: Wednesday, May 16, 2012 9:44 PM
To: Takuya Yoshikawa
Cc: Xudong Hao; kvm@vger.kernel.org; linux-ker...@vger.kernel.org; Shan,
Haitao; Zhang, Xiantao; Hao, Xudong
Subject: Re: [PATCH 0/4] KVM: Enable EPT access bit
Alex,
On Sat, May 12, 2012 at 6:55 AM, Alex Williamson
alex.william...@redhat.com wrote:
Integrating IOMMU groups more closely into the driver core allows
us to more easily work around DMA quirks. The Ricoh multifunction
controller is a favorite example of devices that are currently
On Wed, May 16, 2012 at 06:25:48PM -0700, Sriram Murthy wrote:
Hi,
Can I run Intel vTune program that uses hardware events from the PMU, for
profiling, on my linux VM on KVM? Also, what is the current state of PMU
support for guest VMs on KVM?.
No, unfortunately you can't. vTune does
On Wed, May 16, 2012 at 10:07:58PM +0300, Michael S. Tsirkin wrote:
This code is reached from kvm_cpu_get_interrupt(), but this function will
not be called in above scenario.
I think I see. So this shall fix it also makes code cleaner
(no -2 hack). Right? kvm_apic_has_interrupt is called
On Thu, May 17, 2012 at 10:28:41AM +0300, Gleb Natapov wrote:
On Wed, May 16, 2012 at 10:07:58PM +0300, Michael S. Tsirkin wrote:
This code is reached from kvm_cpu_get_interrupt(), but this function will
not be called in above scenario.
I think I see. So this shall fix it also makes
On Thu, May 17, 2012 at 10:49:47AM +0300, Michael S. Tsirkin wrote:
On Thu, May 17, 2012 at 10:28:41AM +0300, Gleb Natapov wrote:
On Wed, May 16, 2012 at 10:07:58PM +0300, Michael S. Tsirkin wrote:
This code is reached from kvm_cpu_get_interrupt(), but this function
will
not be
On 05/17/2012 10:49 AM, Michael S. Tsirkin wrote:
On Thu, May 17, 2012 at 10:28:41AM +0300, Gleb Natapov wrote:
On Wed, May 16, 2012 at 10:07:58PM +0300, Michael S. Tsirkin wrote:
This code is reached from kvm_cpu_get_interrupt(), but this function
will
not be called in above
On Thu, May 17, 2012 at 10:57:33AM +0300, Avi Kivity wrote:
On 05/17/2012 10:49 AM, Michael S. Tsirkin wrote:
On Thu, May 17, 2012 at 10:28:41AM +0300, Gleb Natapov wrote:
On Wed, May 16, 2012 at 10:07:58PM +0300, Michael S. Tsirkin wrote:
This code is reached from
On Thu, May 17, 2012 at 10:57:33AM +0300, Avi Kivity wrote:
On 05/17/2012 10:49 AM, Michael S. Tsirkin wrote:
On Thu, May 17, 2012 at 10:28:41AM +0300, Gleb Natapov wrote:
On Wed, May 16, 2012 at 10:07:58PM +0300, Michael S. Tsirkin wrote:
This code is reached from
On Thu, May 17, 2012 at 12:10:55PM +0300, Michael S. Tsirkin wrote:
On Thu, May 17, 2012 at 10:57:33AM +0300, Avi Kivity wrote:
On 05/17/2012 10:49 AM, Michael S. Tsirkin wrote:
On Thu, May 17, 2012 at 10:28:41AM +0300, Gleb Natapov wrote:
On Wed, May 16, 2012 at 10:07:58PM +0300,
Currently, the guest can not know the NUMA info of the vcpu, which will
result in performance drawback.
This is the discovered and experiment by
Shirley Ma x...@us.ibm.com
Krishna Kumar krkum...@in.ibm.com
Tom Lendacky t...@us.ibm.com
Refer to -
From: Liu Ping Fan pingf...@linux.vnet.ibm.com
Make vhost allocate vhost_virtqueue on different host nodes as required.
Signed-off-by: Liu Ping Fan pingf...@linux.vnet.ibm.com
---
drivers/vhost/vhost.c | 380 +++--
drivers/vhost/vhost.h | 41 --
From: Liu Ping Fan pingf...@linux.vnet.ibm.com
For each numa node reported by vhost, we alloc a pair of i/o vq,
and assign them msix IRQ, and set irq affinity to a set of vcpu
in the same node.
Also we alloc vqs on PAGE_SIZE align, so they will be allocated by
host when pg fault happen on
From: Liu Ping Fan pingf...@linux.vnet.ibm.com
Vhost net uses separate transfer logic unit in different node.
Virtio net must determine which logic unit it will talk with,
so we can improve the performance.
Signed-off-by: Liu Ping Fan pingf...@linux.vnet.ibm.com
---
drivers/net/virtio_net.c |
From: Liu Ping Fan pingf...@linux.vnet.ibm.com
Make vhost net support to spread on host node according the command.
And consider the whole vhost_net componsed of lots of logic net units.
for each node, there is a unit, which includes a vhost_worker thread,
rx/tx vhost_virtqueue.
Signed-off-by:
On 05/17/2012 11:07 AM, Gleb Natapov wrote:
No, let's refactor this so it makes sense. The {has|get}_interrupt
split is the cause of the problem, I think. We need a single function,
with callbacks that are called when an event happens. The callbacks can
request an irq window exit,
On 05/17/2012 12:12 PM, Gleb Natapov wrote:
OK will look into this next week.
What about looking into my suggestion with setting vcpu-request bit? I
think totally refactoring irq handling path should not be done as part
of this series.
Certainly not as part of it, but maybe as a
Practically all patches to ia64 KVM are build fixes; numerous warnings remain;
the last patch from the maintainer was committed more than three years ago. It
is clear that no one is using this thing.
Mark as BROKEN to ensure people don't get hit by pointless build problems.
Signed-off-by: Avi
This allows us to later move the actual flush out of protection of the
mmu spinlock, provided there are no additional dependencies.
Constructs of the form
if (pred)
kvm_flush_remote_tlbs(kvm)
are converted to
if (pred)
kvm_mark_tlb_dirty(kvm)
Signed-off-by: Avi Kivity a...@redhat.com
---
virt/kvm/kvm_main.c | 16
1 file changed, 8 insertions(+), 8 deletions(-)
diff --git a/virt/kvm/kvm_main.c b/virt/kvm/kvm_main.c
index 585ab45..9f6d15d 100644
--- a/virt/kvm/kvm_main.c
+++ b/virt/kvm/kvm_main.c
@@ -302,11 +302,11
mmu_page_zap_pte() is modified to mark the TLB as dirty; but currently
only FNAME(invlpg) takes advantage of this.
Signed-off-by: Avi Kivity a...@redhat.com
---
arch/x86/kvm/mmu.c |7 +++
arch/x86/kvm/paging_tmpl.h |7 +++
2 files changed, 6 insertions(+), 8 deletions(-)
Signed-off-by: Avi Kivity a...@redhat.com
---
arch/x86/kvm/mmu.c |8 +---
virt/kvm/kvm_main.c |2 ++
2 files changed, 3 insertions(+), 7 deletions(-)
diff --git a/arch/x86/kvm/mmu.c b/arch/x86/kvm/mmu.c
index 0e1faec..85ed48a 100644
--- a/arch/x86/kvm/mmu.c
+++ b/arch/x86/kvm/mmu.c
Currently we flush the TLB while holding mmu_lock. This
increases the lock hold time by the IPI round-trip time, increasing
contention, and makes dropping the lock (for latency reasons) harder.
This patch changes TLB management to be usable locklessly, introducing
the following APIs:
On 05/17/2012 01:24 PM, Avi Kivity wrote:
Currently we flush the TLB while holding mmu_lock. This
increases the lock hold time by the IPI round-trip time, increasing
contention, and makes dropping the lock (for latency reasons) harder.
This patch changes TLB management to be usable
On Wed, May 16, 2012 at 09:32:44PM -0500, Anthony Liguori wrote:
On 05/16/2012 03:58 PM, Eduardo Habkost wrote:
Description of the bug:
Since QEMU 0.15, the CPUID information on CPUID[EAX=7,ECX=0] is being
returned unfiltered to the guest, directly from the GET_SUPPORTED_CPUID
return value.
Nothing spectacular, just regularization of the code.
Avi Kivity (3):
KVM: Simplify KVM_REQ_EVENT/req_int_win handling
KVM: Optimize vcpu-requests slow path slightly
KVM: Move mmu reload out of line
arch/x86/kvm/mmu.c |2 ++
arch/x86/kvm/x86.c | 73
Put the KVM_REQ_EVENT block in the regular vcpu-requests if (),
instead of its own little check.
Signed-off-by: Avi Kivity a...@redhat.com
---
arch/x86/kvm/x86.c | 30 --
1 file changed, 16 insertions(+), 14 deletions(-)
diff --git a/arch/x86/kvm/x86.c
Instead of using a atomic operation per active request, use just one
to get all requests at once, then check them with local ops. This
probably isn't any faster, since simultaneous requests are rare, but
it does reduce code size.
Signed-off-by: Avi Kivity a...@redhat.com
---
arch/x86/kvm/x86.c
Currently we check that the mmu root exits before every entry. Use the
existing KVM_REQ_MMU_RELOAD mechanism instead, by making it really reload
the mmu, and by adding the request to mmu initialization code.
Signed-off-by: Avi Kivity a...@redhat.com
---
arch/x86/kvm/mmu.c |2 ++
On Wed, May 16, 2012 at 05:58:05PM -0300, Eduardo Habkost wrote:
[...]
@@ -521,6 +523,13 @@ static int cpu_x86_fill_host(x86_def_t *x86_cpu_def)
x86_cpu_def-ext_features = ecx;
x86_cpu_def-features = edx;
+if (x86_cpu_def-level = 7) {
+host_cpuid(0x7, 0, eax, ebx,
[ changes in v2: rebase over uq/master ]
This series is another major milestone of merging qemu-kvm into
upstream. It implements the required interfaces and logic to directly
inject MSI-X interrupts generated by the vhost-net kernel module into
the KVM in-kernel irqchip. This involves
-
From: Jan Kiszka jan.kis...@siemens.com
This helper will also be used by the upcoming config notifier.
Signed-off-by: Jan Kiszka jan.kis...@siemens.com
---
hw/msix.c | 19 +--
1 files changed, 13 insertions(+), 6 deletions(-)
diff --git a/hw/msix.c b/hw/msix.c
index
From: Jan Kiszka jan.kis...@siemens.com
In preparation of firing vector notifiers on mask changes, call
msix_handle_mask_update also from msix_mask_all. So far, this will have
no real effect.
Signed-off-by: Jan Kiszka jan.kis...@siemens.com
---
hw/msix.c |4
1 files changed, 4
From: Jan Kiszka jan.kis...@siemens.com
Vector notifiers shall be triggered by the MSI/MSI-X core whenever a
relevant configuration change is programmed by the guest. In case of
MSI-X, changes are reported when the effective mask (global
per-vector) alters its state. On unmask, the current
From: Jan Kiszka jan.kis...@siemens.com
Add a service that establishes a static route from a virtual IRQ line to
an MSI message. Will be used for IRQFD and device assignment. As we will
use this service outside of CONFIG_KVM protected code, stub it properly.
Signed-off-by: Jan Kiszka
From: Jan Kiszka jan.kis...@siemens.com
Automatically commit route changes after kvm_add_routing_entry and
kvm_irqchip_release_virq. There is no performance relevant use case for
which collecting multiple route changes is beneficial. This makes
kvm_irqchip_commit_routes an internal service which
From: Jan Kiszka jan.kis...@siemens.com
Add services to associate an eventfd file descriptor as input with an
IRQ line as output. Such a line can be an input pin of an in-kernel
irqchip or a virtual line returned by kvm_irqchip_add_route.
Signed-off-by: Jan Kiszka jan.kis...@siemens.com
---
From: Jan Kiszka jan.kis...@siemens.com
Provide a dummy kvm_kernel_irqchip so that kvm_irqchip_in_kernel can be
used by code that is not under CONFIG_KVM protection.
Signed-off-by: Jan Kiszka jan.kis...@siemens.com
---
kvm-stub.c |1 +
1 files changed, 1 insertions(+), 0 deletions(-)
diff
From: Jan Kiszka jan.kis...@siemens.com
Analogously to msi_nr_vectors_allocated, add a service for MSI-X. Will
be used by the virtio-pci layer.
Signed-off-by: Jan Kiszka jan.kis...@siemens.com
---
hw/msix.c |5 +
hw/msix.h |2 ++
2 files changed, 7 insertions(+), 0 deletions(-)
From: Jan Kiszka jan.kis...@siemens.com
Make use of the new vector notifier to track changes of the MSI-X
configuration of virtio PCI devices. On enabling events, we establish
the required virtual IRQ to MSI-X message route and link the signaling
eventfd file descriptor to this vIRQ line. That
On Thu, 2012-05-17 at 15:19 +0800, Anonymous wrote:
Alex,
On Sat, May 12, 2012 at 6:55 AM, Alex Williamson
alex.william...@redhat.com wrote:
Integrating IOMMU groups more closely into the driver core allows
us to more easily work around DMA quirks. The Ricoh multifunction
controller is
Changes v1 - v2:
- Use kvm_arch_get_supported_cpuid() instead of host_cpuid() on
cpu_x86_fill_host().
We should use GET_SUPPORTED_CPUID for all bits on -cpu host
eventually, but I am not changing all the other CPUID leaves because
we may not be able to test such an intrusive change in
On 05/16/2012 08:25 AM, Alexander Graf wrote:
When reinjecting host interrupt requests in the exit handler code,
let's also tell the interrupt handler which interrupt number we're
coming from.
Signed-off-by: Alexander Graf ag...@suse.de
---
arch/powerpc/kvm/booke.c | 12 +++-
1
On 05/17/2012 10:26 AM, Eduardo Habkost wrote:
The problem is that this makes the resulting CPU feature flags
unpredictable and dependent on the host CPU and kernel version. This
breaks live-migration badly if migrating from a host CPU that supports
some features on that CPUID leaf (running a
On Thu, May 17, 2012 at 10:56:36AM -0600, Eric Blake wrote:
On 05/17/2012 10:26 AM, Eduardo Habkost wrote:
The problem is that this makes the resulting CPU feature flags
unpredictable and dependent on the host CPU and kernel version. This
breaks live-migration badly if migrating from a
Hi ,
Is it possible to keep a count of reads / writes taking place in a vm
using qemu ( using kvm as hypervisor ) ? Is there a api ( or any patch )
for it ?
Thanks ,
Jaspal
--
To unsubscribe from this list: send the line unsubscribe kvm in
the body of a message to majord...@vger.kernel.org
On Thu, May 17, 2012 at 11:36:24PM +0530, Jaspal wrote:
Hi ,
Is it possible to keep a count of reads / writes taking place in a
vm using qemu ( using kvm as hypervisor ) ? Is there a api ( or any
patch ) for it ?
Memory reads and writes is surely going to generate a huge
amount of output!
Hi all,
I've observed a guest hang after putting a little stress testing on
it. It basically hangs in ~10 secs after running several trinity
instances inside a KVM tools guest.
The hang is easy to describe and reproduce:
1. No userspace exits observed
2. kvm_stat looks as follows (with all
On Thu, May 17, 2012 at 09:49:08PM +0200, Sasha Levin wrote:
Hi all,
I've observed a guest hang after putting a little stress testing on
it. It basically hangs in ~10 secs after running several trinity
instances inside a KVM tools guest.
And do you set hypervisor bit in KVM tool?
The
On Thu, May 17, 2012 at 10:05 PM, Gleb Natapov g...@redhat.com wrote:
On Thu, May 17, 2012 at 09:49:08PM +0200, Sasha Levin wrote:
Hi all,
I've observed a guest hang after putting a little stress testing on
it. It basically hangs in ~10 secs after running several trinity
instances inside a
On Thu, May 17, 2012 at 10:14:35PM +0200, Sasha Levin wrote:
On Thu, May 17, 2012 at 10:05 PM, Gleb Natapov g...@redhat.com wrote:
On Thu, May 17, 2012 at 09:49:08PM +0200, Sasha Levin wrote:
Hi all,
I've observed a guest hang after putting a little stress testing on
it. It basically
On 17.05.2012, at 18:37, Scott Wood wrote:
On 05/16/2012 08:25 AM, Alexander Graf wrote:
When reinjecting host interrupt requests in the exit handler code,
let's also tell the interrupt handler which interrupt number we're
coming from.
Signed-off-by: Alexander Graf ag...@suse.de
---
https://bugzilla.kernel.org/show_bug.cgi?id=42980
--- Comment #9 from Luke-Jr luke-jr+linuxb...@utopios.org 2012-05-17
20:58:50 ---
The while/ping thing doesn't reproduce it even before the patch. :(
--
Configure bugmail: https://bugzilla.kernel.org/userprefs.cgi?tab=email
--- You are
On 05/17/2012 03:56 PM, Alexander Graf wrote:
On 17.05.2012, at 18:37, Scott Wood wrote:
On 05/16/2012 08:25 AM, Alexander Graf wrote:
When reinjecting host interrupt requests in the exit handler code,
let's also tell the interrupt handler which interrupt number we're
coming from.
On 17.05.2012, at 22:58, Scott Wood wrote:
On 05/17/2012 03:56 PM, Alexander Graf wrote:
On 17.05.2012, at 18:37, Scott Wood wrote:
On 05/16/2012 08:25 AM, Alexander Graf wrote:
When reinjecting host interrupt requests in the exit handler code,
let's also tell the interrupt handler
On 05/17/2012 04:03 PM, Alexander Graf wrote:
On 17.05.2012, at 22:58, Scott Wood wrote:
On 05/17/2012 03:56 PM, Alexander Graf wrote:
On 17.05.2012, at 18:37, Scott Wood wrote:
On 05/16/2012 08:25 AM, Alexander Graf wrote:
When reinjecting host interrupt requests in the exit handler
On Mon, May 14, 2012 at 06:25:42AM +, Mao, Junjie wrote:
Add unit test for basic functionality of PCID/INVPCID feature exposing in kvm.
Signed-off-by: Junjie Mao junjie@intel.com
---
config-x86-common.mak |2 +
config-x86_64.mak |3 +-
x86/README|1 +
On Tue, May 15, 2012 at 02:15:24PM +0200, Christian Borntraeger wrote:
Avi, Marcelo,
here are 4 feature patches for kvm-s390. One patch deals with
the memory management of kvm and allows MAP_PRIVATE. The other
patches implement user space access for some missing registers
via the ONE_REG
There is some brief documentation on top of each trace entry definition
in the arch/x86/kvm/trace.h file, in the kernel source code.
http://git.kernel.org/?p=virt/kvm/kvm.git;a=blob;f=arch/x86/kvm/trace.h;h=911d2641f14c5cba355abc25e00f38f07ced1df9;hb=refs/heads/next-candidate
There is an exact
On Tue, May 15, 2012 at 09:57:20AM -0300, Jan Kiszka wrote:
Removes two unused KVM core functions and some unneeded diffs in
msi/msix.c.
Jan Kiszka (4):
qemu-kvm: Drop unused kvm_clear_gsi_routes
qemu-kvm: Drop unused kvm_del_irq_route
qemu-kvm: msi: Drop redundant support tests
On Wed, May 16, 2012 at 09:12:30AM +0800, Xudong Hao wrote:
Enabling Access bit when doing memory swapping.
Signed-off-by: Haitao Shan haitao.s...@intel.com
Signed-off-by: Xudong Hao xudong@intel.com
---
arch/x86/kvm/mmu.c | 13 +++--
arch/x86/kvm/vmx.c |6 --
2
Alexander,
Is that any better? :)
@@ -1779,11 +1779,29 @@ static void pci_del_option_rom(PCIDevice *pdev)
* in pci config space */
int pci_add_capability(PCIDevice *pdev, uint8_t cap_id,
uint8_t offset, uint8_t size)
{
-uint8_t *config;
+uint8_t *config,
-Original Message-
From: Wood Scott-B07421
Sent: Thursday, May 17, 2012 3:37 AM
To: Sethi Varun-B16395
Cc: Alexander Graf; Bhushan Bharat-R65777; kvm-ppc@vger.kernel.org
Subject: Re: [PATCH] KVM: PPC: Not optimizing MSR_CE and MSR_DE with
paravirt.
On 05/16/2012 10:13 AM, Sethi
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