We can know the guest is panicked when the guest runs on xen.
But we do not have such feature on kvm.
Another purpose of this feature is: management app(for example:
libvirt) can do auto dump when the guest is panicked. If management
app does not do auto dump, the guest's user can do dump by hand
The guest should run after reseting it, but it does not
run if its old state is RUN_STATE_INTERNAL_ERROR or RUN_STATE_PAUSED.
Signed-off-by: Wen Congyang we...@cn.fujitsu.com
---
vl.c |1 +
1 files changed, 1 insertions(+), 0 deletions(-)
diff --git a/vl.c b/vl.c
index 23ab3a3..7f5fed8
Signed-off-by: Wen Congyang we...@cn.fujitsu.com
---
linux-headers/linux/kvm_para.h |8
1 files changed, 8 insertions(+), 0 deletions(-)
diff --git a/linux-headers/linux/kvm_para.h b/linux-headers/linux/kvm_para.h
index 7bdcf93..5618758 100644
--- a/linux-headers/linux/kvm_para.h
When the guest is panicked, it will write 0x1 to the port 0x505. So if
qemu reads 0x1 from this port, we can do the folloing three things
according to the parameter -onpanic:
1. emit QEVENT_GUEST_PANICKED only
2. emit QEVENT_GUEST_PANICKED and pause VM
3. emit QEVENT_GUEST_PANICKED and quit VM
If we map a readonly memory space from host to guest and the page is
not currently mapped in the host, we will get a fault-pfn and async
is not allowed, then the vm will crash
The reason is only writable vma can be allowed to be async in current
code
Signed-off-by: Xiao Guangrong
This adds a kvm-specific hypervisor call to the pseries machine
which allows to do what amounts to memmove, memcpy and xor over
regions of physical memory such as the framebuffer.
This is the simplest way to get usable framebuffer speed from
SLOF since the framebuffer isn't mapped in the VRMA and
On 15.05.2012, at 06:06, Benjamin Herrenschmidt wrote:
More recent Power server chips (i.e. based on the 64 bit hash MMU)
support more than just the traditional 4k and 16M page sizes. This
can get quite complicated, because which page sizes are supported,
which combinations are supported
On Mon, May 21, 2012 at 02:45:45PM +0800, Xiao Guangrong wrote:
If we map a readonly memory space from host to guest and the page is
not currently mapped in the host, we will get a fault-pfn and async
is not allowed, then the vm will crash
Why would we want to map a readonly memory space from
On 05/21/2012 06:54 AM, Xudong Hao wrote:
Enabling Access bit when doing memory swapping.
@@ -1243,11 +1244,11 @@ static int kvm_age_rmapp(struct kvm *kvm, unsigned
long *rmapp,
for (sptep = rmap_get_first(*rmapp, iter); sptep;
sptep = rmap_get_next(iter)) {
-
On 05/21/2012 06:34 AM, Ren, Yongjie wrote:
Hi All,
This is KVM upstream test result against kvm.git
51bfd2998113e1f8ce8dcf853407b76a04b5f2a0 based on kernel 3.4.0-rc7, and
qemu-kvm.git a1fce560c0e5f287ed65d2aaadb3e59578aaa983.
We found 1 new bug and 1 bug got fixed in the past two weeks.
On 05/21/2012 06:22 AM, Hao, Xudong wrote:
-Original Message-
From: Marcelo Tosatti [mailto:mtosa...@redhat.com]
Sent: Friday, May 18, 2012 10:23 AM
To: Xudong Hao
Cc: a...@redhat.com; kvm@vger.kernel.org; linux-ker...@vger.kernel.org;
Shan, Haitao; Zhang, Xiantao; Hao, Xudong
On 05/21/2012 04:08 PM, Gleb Natapov wrote:
On Mon, May 21, 2012 at 02:45:45PM +0800, Xiao Guangrong wrote:
If we map a readonly memory space from host to guest and the page is
not currently mapped in the host, we will get a fault-pfn and async
is not allowed, then the vm will crash
Why
On 05/21/2012 05:32 AM, Yanfei Zhang wrote:
于 2012年05月21日 01:43, Avi Kivity 写道:
On 05/16/2012 10:50 AM, zhangyanfei wrote:
This patch set exports offsets of VMCS fields as note information for
kdump. We call it VMCSINFO. The purpose of VMCSINFO is to retrieve
runtime state of guest
On 21.05.2012, at 09:24, Benjamin Herrenschmidt wrote:
This adds a kvm-specific hypervisor call to the pseries machine
which allows to do what amounts to memmove, memcpy and xor over
regions of physical memory such as the framebuffer.
This is the simplest way to get usable framebuffer
On Mon, 2012-05-21 at 10:38 +0200, Alexander Graf wrote:
On 21.05.2012, at 09:24, Benjamin Herrenschmidt wrote:
This adds a kvm-specific hypervisor call to the pseries machine
which allows to do what amounts to memmove, memcpy and xor over
regions of physical memory such as the
Am 21.05.2012 10:27, schrieb Avi Kivity:
On 05/21/2012 06:34 AM, Ren, Yongjie wrote:
Hi All,
This is KVM upstream test result against kvm.git
51bfd2998113e1f8ce8dcf853407b76a04b5f2a0 based on kernel 3.4.0-rc7, and
qemu-kvm.git a1fce560c0e5f287ed65d2aaadb3e59578aaa983.
We found 1 new bug
On 21.05.2012, at 10:59, Benjamin Herrenschmidt wrote:
On Mon, 2012-05-21 at 10:38 +0200, Alexander Graf wrote:
On 21.05.2012, at 09:24, Benjamin Herrenschmidt wrote:
This adds a kvm-specific hypervisor call to the pseries machine
which allows to do what amounts to memmove, memcpy and xor
When user hot-unplug a disk which is busy serving I/O, __blk_run_queue
might be unable to drain all the requests. As a result, the
blk_drain_queue() would loop forever and blk_cleanup_queue would not
return. So hot-unplug will fail.
This patch adds a callback in blk_drain_queue() for low lever
del_gendisk() might not return due to failing to remove the
/sys/block/vda/serial sysfs entry when another thread (udev) is
trying to read it.
virtblk_remove()
vdev-config-reset() : guest will not kick us through interrupt
del_gendisk()
device_del()
kobject_del(): got stuck,
virtblk_abort_queue() will be called by the block layer when cleans up
the queue. blk_cleanup_queue - blk_drain_queue() - q-abort_queue_fn(q)
virtblk_abort_queue()
1) Abort requests in block which is not dispatched to driver
2) Abort requests already dispatched to driver
3) Wake up processes
Block layer will allocate a spinlock for the queue if the driver does
not provide one in blk_init_queue().
The reason to use the internal spinlock is that blk_cleanup_queue() will
switch to use the internal spinlock in the cleanup code path.
if (q-queue_lock != q-__queue_lock)
于 2012年05月21日 16:34, Avi Kivity 写道:
On 05/21/2012 05:32 AM, Yanfei Zhang wrote:
于 2012年05月21日 01:43, Avi Kivity 写道:
On 05/16/2012 10:50 AM, zhangyanfei wrote:
This patch set exports offsets of VMCS fields as note information for
kdump. We call it VMCSINFO. The purpose of VMCSINFO is to
On 05/21/2012 12:08 PM, Yanfei Zhang wrote:
于 2012年05月21日 16:34, Avi Kivity 写道:
On 05/21/2012 05:32 AM, Yanfei Zhang wrote:
于 2012年05月21日 01:43, Avi Kivity 写道:
On 05/16/2012 10:50 AM, zhangyanfei wrote:
This patch set exports offsets of VMCS fields as note information for
kdump. We call
-Original Message-
From: Kevin Wolf [mailto:kw...@redhat.com]
Sent: Monday, May 21, 2012 5:05 PM
To: Avi Kivity
Cc: Ren, Yongjie; kvm@vger.kernel.org
Subject: Re: Biweekly KVM Test report, kernel 51bfd299... qemu
a1fce560...
Am 21.05.2012 10:27, schrieb Avi Kivity:
On
On 05/21/2012 10:24 AM, Benjamin Herrenschmidt wrote:
This adds a kvm-specific hypervisor call to the pseries machine
which allows to do what amounts to memmove, memcpy and xor over
regions of physical memory such as the framebuffer.
This is the simplest way to get usable framebuffer speed
On Mon, 2012-05-21 at 12:47 +0300, Avi Kivity wrote:
On 05/21/2012 10:24 AM, Benjamin Herrenschmidt wrote:
This adds a kvm-specific hypervisor call to the pseries machine
which allows to do what amounts to memmove, memcpy and xor over
regions of physical memory such as the framebuffer.
On 05/21/2012 01:04 PM, Benjamin Herrenschmidt wrote:
On Mon, 2012-05-21 at 12:47 +0300, Avi Kivity wrote:
On 05/21/2012 10:24 AM, Benjamin Herrenschmidt wrote:
This adds a kvm-specific hypervisor call to the pseries machine
which allows to do what amounts to memmove, memcpy and xor over
-Original Message-
From: Avi Kivity [mailto:a...@redhat.com]
Sent: Monday, May 21, 2012 4:32 PM
To: Hao, Xudong
Cc: Marcelo Tosatti; Xudong Hao; kvm@vger.kernel.org;
linux-ker...@vger.kernel.org; Shan, Haitao; Zhang, Xiantao
Subject: Re: [PATCH 4/4] Enabling Access bit when doing
On 05/21/2012 01:35 PM, Hao, Xudong wrote:
That doesn't answer the question. An atomic operation is now non-atomic.
You can calculate shadow_accessed_bit and keep on using clear_bit(), or
switch to cmpxchg64(), but don't just drop the dirty bit here.
I know your meaning. How
-Original Message-
From: Avi Kivity [mailto:a...@redhat.com]
Sent: Monday, May 21, 2012 6:48 PM
To: Hao, Xudong
Cc: Marcelo Tosatti; Xudong Hao; kvm@vger.kernel.org;
linux-ker...@vger.kernel.org; Shan, Haitao; Zhang, Xiantao
Subject: Re: [PATCH 4/4] Enabling Access bit when doing
On 05/21/2012 02:17 PM, Hao, Xudong wrote:
-Original Message-
From: Avi Kivity [mailto:a...@redhat.com]
Sent: Monday, May 21, 2012 6:48 PM
To: Hao, Xudong
Cc: Marcelo Tosatti; Xudong Hao; kvm@vger.kernel.org;
linux-ker...@vger.kernel.org; Shan, Haitao; Zhang, Xiantao
Subject:
On 2012-05-20 11:45, Avi Kivity wrote:
On 05/20/2012 05:42 PM, Michael S. Tsirkin wrote:
On Thu, May 17, 2012 at 10:32:28AM -0300, Jan Kiszka wrote:
After this series, to only reasons to still use qemu-kvm for production
purposes will be PCI device assignment
Yay!
By the way, there are
On 05/21/2012 02:31 PM, Jan Kiszka wrote:
On 2012-05-20 11:45, Avi Kivity wrote:
On 05/20/2012 05:42 PM, Michael S. Tsirkin wrote:
On Thu, May 17, 2012 at 10:32:28AM -0300, Jan Kiszka wrote:
After this series, to only reasons to still use qemu-kvm for production
purposes will be PCI
On Mon, 2012-05-21 at 13:07 +0300, Avi Kivity wrote:
Now I'm adding another one, so yes, it's looking like a trend :-) I'll
look into it, at this stage with only those two, adding some comments in
the header might be plenty enough.
Documentation/virtual/kvm/ppc-pv.txt is a nice central
On 05/18/2012 10:47 PM, Alex Williamson wrote:
On Fri, 2012-05-18 at 19:00 -0400, Don Dutile wrote:
On 05/18/2012 06:02 PM, Alex Williamson wrote:
On Wed, 2012-05-16 at 09:29 -0400, Don Dutile wrote:
On 05/15/2012 05:09 PM, Alex Williamson wrote:
On Tue, 2012-05-15 at 13:56 -0600, Bjorn
On 05/21/2012 02:48 PM, Benjamin Herrenschmidt wrote:
On Mon, 2012-05-21 at 13:07 +0300, Avi Kivity wrote:
Now I'm adding another one, so yes, it's looking like a trend :-) I'll
look into it, at this stage with only those two, adding some comments in
the header might be plenty enough.
On Thu, May 17, 2012 at 01:26:55PM -0300, Eduardo Habkost wrote:
[...]
@@ -521,6 +523,12 @@ 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) {
+
Changes v2 - v3;
- Check for kvm_enabled() before setting cpuid_7_0_ebx_features
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
On 05/10/2012 12:03 AM, Marcelo Tosatti wrote:
It has the advantage that it requires code to explicitly document where
the TLB must be flushed and the sites which expect sptes to be in sync
with TLBs.
I'm looking for an idea of how to make the flush in those cases not hold
On 05/18/2012 08:59 PM, Paul Gortmaker wrote:
There are two functions in this asm-generic file. Looking at
other arch which do not use the generic version, these two fcns
are within an #ifdef __KERNEL__ block, so make the generic one
consistent with those.
Thanks, applied for 3.5.
--
error
On Mon, 2012-05-21 at 09:31 -0400, Don Dutile wrote:
On 05/18/2012 10:47 PM, Alex Williamson wrote:
On Fri, 2012-05-18 at 19:00 -0400, Don Dutile wrote:
On 05/18/2012 06:02 PM, Alex Williamson wrote:
On Wed, 2012-05-16 at 09:29 -0400, Don Dutile wrote:
On 05/15/2012 05:09 PM, Alex
Hi
Please send in any agenda items you are interested in covering.
Thanks, Juan.
--
To unsubscribe from this list: send the line unsubscribe kvm in
the body of a message to majord...@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Am 21.05.2012 11:45, schrieb Ren, Yongjie:
-Original Message-
From: Kevin Wolf [mailto:kw...@redhat.com]
Sent: Monday, May 21, 2012 5:05 PM
To: Avi Kivity
Cc: Ren, Yongjie; kvm@vger.kernel.org
Subject: Re: Biweekly KVM Test report, kernel 51bfd299... qemu
a1fce560...
Am 21.05.2012
On Mon, May 21, 2012 at 05:08:29PM +0800, Asias He wrote:
When user hot-unplug a disk which is busy serving I/O, __blk_run_queue
might be unable to drain all the requests. As a result, the
blk_drain_queue() would loop forever and blk_cleanup_queue would not
return. So hot-unplug will fail.
We perform ISR lookups twice: during interrupt
injection and on EOI. Typical workloads only have
a single bit set there. So we can avoid ISR scans by
1. counting bits as we set/clear them in ISR
2. if count is 1, caching the vector number
3. if count != 1, invalidating the cache
The real purpose
On Fri, May 11, 2012 at 04:56:44PM -0600, Alex Williamson wrote:
For returning errors out to non-PCI code. Re-name xen's version.
Signed-off-by: Alex Williamson alex.william...@redhat.com
Acked-by: Konrad Rzeszutek Wilk konrad.w...@oracle.com
---
drivers/xen/xen-pciback/conf_space.c |
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
Signed-off-by: Avi Kivity a...@redhat.com
---
hw/msix.c |5 +
hw/msix.h |2 ++
2 files
From: Jan Kiszka jan.kis...@siemens.com
Will be used for generating and distributing MSI messages, both in
emulation mode and under KVM.
Signed-off-by: Jan Kiszka jan.kis...@siemens.com
Signed-off-by: Marcelo Tosatti mtosa...@redhat.com
---
hw/msi.h |5 +
qemu-common.h |1 +
2
From: Jan Kiszka jan.kis...@siemens.com
This allows to drop routes created by kvm_irqchip_add_irq/msi_route
again.
Signed-off-by: Jan Kiszka jan.kis...@siemens.com
Signed-off-by: Avi Kivity a...@redhat.com
---
kvm-all.c |2 +-
kvm-stub.c |4
kvm.h |1 +
3 files changed, 6
From: Jan Kiszka jan.kis...@siemens.com
Instead of the bitmap size, store the maximum of GSIs the kernel
support. Move the GSI limit assertion to the API function
kvm_irqchip_add_route and make it stricter.
Signed-off-by: Jan Kiszka jan.kis...@siemens.com
Signed-off-by: Marcelo Tosatti
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
Signed-off-by: Avi Kivity a...@redhat.com
---
Please pull from:
git://git.kernel.org/pub/scm/virt/kvm/qemu-kvm.git uq/master
This is mostly Jan's MSI for KVM patches.
Avi Kivity (1):
kvm: update vmxcap for EPT A/D, INVPCID, RDRAND, VMFUNC
Jan Kiszka (19):
kvm:
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
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
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
We will add kvm_irqchip_add_msi_route, so let's make the difference
clearer.
Signed-off-by: Jan Kiszka jan.kis...@siemens.com
Signed-off-by: Avi Kivity a...@redhat.com
---
hw/pc_piix.c |8
kvm-all.c|2 +-
kvm.h|2 +-
3
From: Jan Kiszka jan.kis...@siemens.com
This patch basically adds kvm_irqchip_send_msi, a service for sending
arbitrary MSI messages to KVM's in-kernel irqchip models.
As the original KVM API requires us to establish a static route from a
pseudo GSI to the target MSI message and inject the MSI
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
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
If the kernel supports KVM_SIGNAL_MSI, we can avoid the route-based
MSI injection mechanism.
Signed-off-by: Jan Kiszka jan.kis...@siemens.com
Signed-off-by: Marcelo Tosatti mtosa...@redhat.com
---
kvm-all.c | 22 +++---
1 file changed,
From: Jan Kiszka jan.kis...@siemens.com
Push msi_supported enabling to the APIC implementations where we can
encapsulate the decision more cleanly, hiding the details from the
generic code.
Acked-by: Stefano Stabellini stefano.stabell...@eu.citrix.com
Signed-off-by: Jan Kiszka
From: Jan Kiszka jan.kis...@siemens.com
Corresponding kvm.git hash: f2569053e0
Signed-off-by: Jan Kiszka jan.kis...@siemens.com
Signed-off-by: Marcelo Tosatti mtosa...@redhat.com
---
linux-headers/linux/kvm.h | 38 ++
1 file changed, 38 insertions(+)
diff
From: Jan Kiszka jan.kis...@siemens.com
Catch writes to the MSI MMIO region in the KVM APIC and forward them to
the kernel. Provide the kernel support GSI routing, this allows to
enable MSI support also for in-kernel irqchip mode.
Signed-off-by: Jan Kiszka jan.kis...@siemens.com
Signed-off-by:
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
Signed-off-by: Avi Kivity a...@redhat.com
---
hw/msix.c | 19 +--
1 file changed, 13 insertions(+), 6 deletions(-)
diff
From: Jan Kiszka jan.kis...@siemens.com
As MSI is now fully supported by KVM (/wrt available features in
upstream), we can finally enable the in-kernel irqchip by default.
Signed-off-by: Jan Kiszka jan.kis...@siemens.com
Signed-off-by: Marcelo Tosatti mtosa...@redhat.com
---
kvm-all.c |2 +-
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
Signed-off-by: Avi Kivity a...@redhat.com
---
kvm-stub.c |1 +
1 file
On 05/21/2012 10:59 AM, Alex Williamson wrote:
On Mon, 2012-05-21 at 09:31 -0400, Don Dutile wrote:
On 05/18/2012 10:47 PM, Alex Williamson wrote:
On Fri, 2012-05-18 at 19:00 -0400, Don Dutile wrote:
On 05/18/2012 06:02 PM, Alex Williamson wrote:
On Wed, 2012-05-16 at 09:29 -0400, Don Dutile
On Mon, May 21, 2012 at 07:37:27PM +0300, Michael S. Tsirkin wrote:
We perform ISR lookups twice: during interrupt
injection and on EOI. Typical workloads only have
a single bit set there. So we can avoid ISR scans by
1. counting bits as we set/clear them in ISR
2. if count is 1, caching the
usage:
./cpuflags-test --stressmem 100 (in MB)
Signed-off-by: Jiří Župka jzu...@redhat.com
---
client/virt/deps/test_cpu_flags/Makefile|9 +-
client/virt/deps/test_cpu_flags/cpuflags-test.c | 28 ---
client/virt/deps/test_cpu_flags/stressmem.c | 33
Signed-off-by: Jiří Župka jzu...@redhat.com
---
client/shared/base_utils.py | 34 ++
client/shared/base_utils_unittest.py | 19 +++
2 files changed, 53 insertions(+), 0 deletions(-)
diff --git a/client/shared/base_utils.py
Signed-off-by: Jiří Župka jzu...@redhat.com
---
client/virt/kvm_monitor.py |1 +
1 files changed, 1 insertions(+), 0 deletions(-)
diff --git a/client/virt/kvm_monitor.py b/client/virt/kvm_monitor.py
index a49fd18..f7a3e34 100644
--- a/client/virt/kvm_monitor.py
+++
It starts migration and after start of migration it returns
control to calling function.
Signed-off-by: Jiří Župka jzu...@redhat.com
---
client/virt/kvm_vm.py | 16 +++-
1 files changed, 11 insertions(+), 5 deletions(-)
diff --git a/client/virt/kvm_vm.py b/client/virt/kvm_vm.py
tests:
1) Single host measure migration speed.
2) Multi host measure migration speed.
description:
1) start mem stresser in VM to avoid end of migraiton
2) get statistic of migraiton speed
3) kill VMs
4) if migration speed is slower than desired migration speed it raise warning
On Wed, May 16, 2012 at 12:50 AM, zhangyanfei
zhangyan...@cn.fujitsu.com wrote:
This patch set exports offsets of VMCS fields as note information for
kdump. We call it VMCSINFO. The purpose of VMCSINFO is to retrieve
runtime state of guest machine image, such as registers, in host
machine's
On Mon, May 21, 2012 at 04:15:50PM +0800, Xiao Guangrong wrote:
On 05/21/2012 04:08 PM, Gleb Natapov wrote:
On Mon, May 21, 2012 at 02:45:45PM +0800, Xiao Guangrong wrote:
If we map a readonly memory space from host to guest and the page is
not currently mapped in the host, we will get a
On Thu, May 17, 2012 at 01:24:41PM +0300, Avi Kivity wrote:
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
Wondering if a user-space gettimofday() for kvm-clock has been
considered before. I am seeing a pretty large difference in performance
between tsc and kvm-clock. I have to assume at least some of this is
due to the mode switch for kvm-clock. Here are the results:
(this is a 16 vCPU VM on a
On Mon, May 21, 2012 at 03:26:54PM -0500, Andrew Theurer wrote:
Wondering if a user-space gettimofday() for kvm-clock has been
considered before. I am seeing a pretty large difference in
performance between tsc and kvm-clock. I have to assume at least
some of this is due to the mode switch
On Mon, May 21, 2012 at 10:50:30PM +0300, Michael S. Tsirkin wrote:
On Thu, Apr 19, 2012 at 02:06:29PM +0300, Gleb Natapov wrote:
The patch introduces a bitmap that will hold reasons apic should be
checked during vmexit. This is in a preparation for vp eoi patch
that will add one more check
On Mon, May 21, 2012 at 05:08:33PM +0800, Asias He wrote:
Block layer will allocate a spinlock for the queue if the driver does
not provide one in blk_init_queue().
The reason to use the internal spinlock is that blk_cleanup_queue() will
switch to use the internal spinlock in the cleanup
On Thu, May 17, 2012 at 01:24:42PM +0300, Avi Kivity wrote:
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
---
On Mon, 21 May 2012, Michael S. Tsirkin wrote:
We perform ISR lookups twice: during interrupt
injection and on EOI. Typical workloads only have
a single bit set there. So we can avoid ISR scans by
1. counting bits as we set/clear them in ISR
2. if count is 1, caching the vector number
3. if
On Mon, May 21, 2012 at 05:58:50PM -0300, Marcelo Tosatti wrote:
On Thu, May 17, 2012 at 01:24:42PM +0300, Avi Kivity wrote:
Signed-off-by: Avi Kivity a...@redhat.com
---
virt/kvm/kvm_main.c | 16
1 file changed, 8 insertions(+), 8 deletions(-)
diff --git
On Mon, May 21, 2012 at 11:04:25PM +0200, Thomas Gleixner wrote:
@@ -242,6 +262,25 @@ static inline void apic_clear_irr(int vec, struct
kvm_lapic *apic)
apic-irr_pending = true;
}
+static inline void apic_set_isr(int vec, struct kvm_lapic *apic)
+{
+ if
On Mon, 2012-05-21 at 16:55 +0300, Avi Kivity wrote:
Okay. But let's have a spec, even a kvm-private one, and then an
implementation of that spec, instead of an implementation and some
documentation added as an afterthought (or not).
It's a bit like if you had private calls between
On Tue, 22 May 2012, Michael S. Tsirkin wrote:
On Mon, May 21, 2012 at 11:04:25PM +0200, Thomas Gleixner wrote:
@@ -242,6 +262,25 @@ static inline void apic_clear_irr(int vec, struct
kvm_lapic *apic)
apic-irr_pending = true;
}
+static inline void apic_set_isr(int
On 05/21/2012 03:36 PM, Marcelo Tosatti wrote:
On Mon, May 21, 2012 at 03:26:54PM -0500, Andrew Theurer wrote:
Wondering if a user-space gettimofday() for kvm-clock has been
considered before. I am seeing a pretty large difference in
performance between tsc and kvm-clock. I have to assume at
On Tue, May 22, 2012 at 12:14:18AM +0200, Thomas Gleixner wrote:
On Tue, 22 May 2012, Michael S. Tsirkin wrote:
On Mon, May 21, 2012 at 11:04:25PM +0200, Thomas Gleixner wrote:
@@ -242,6 +262,25 @@ static inline void apic_clear_irr(int vec, struct
kvm_lapic *apic)
On Mon, May 21, 2012 at 12:40:42AM +, Mao, Junjie wrote:
-Original Message-
From: Marcelo Tosatti [mailto:mtosa...@redhat.com]
Sent: Saturday, May 19, 2012 5:51 AM
To: Mao, Junjie
Cc: n...@math.technion.ac.il; 'kvm@vger.kernel.org'
Subject: Re: [PATCH v3] KVM: x86:
Michael,
On Tue, 22 May 2012, Michael S. Tsirkin wrote:
On Tue, May 22, 2012 at 12:14:18AM +0200, Thomas Gleixner wrote:
On Tue, 22 May 2012, Michael S. Tsirkin wrote:
On Mon, May 21, 2012 at 11:04:25PM +0200, Thomas Gleixner wrote:
@@ -242,6 +262,25 @@ static inline void
On Tue, May 22, 2012 at 12:44:39AM +0200, Thomas Gleixner wrote:
Michael,
On Tue, 22 May 2012, Michael S. Tsirkin wrote:
On Tue, May 22, 2012 at 12:14:18AM +0200, Thomas Gleixner wrote:
On Tue, 22 May 2012, Michael S. Tsirkin wrote:
On Mon, May 21, 2012 at 11:04:25PM +0200, Thomas
On Tue, 22 May 2012, Michael S. Tsirkin wrote:
On Tue, May 22, 2012 at 12:14:18AM +0200, Thomas Gleixner wrote:
On Tue, 22 May 2012, Michael S. Tsirkin wrote:
On Mon, May 21, 2012 at 11:04:25PM +0200, Thomas Gleixner wrote:
@@ -242,6 +262,25 @@ static inline void apic_clear_irr(int
After the release of kernel 3.4, this is now the announcements of the
corresponding kvm-kmod-3.4. The package is available from
http://sourceforge.net/projects/kvm/files/kvm-kmod/3.4/kvm-kmod-3.4.tar.bz2/download
See [1] for further details on kvm-kmod.
Major KVM changes since kvm-kmod-3.3.6:
On Mon, May 21, 2012 at 11:04:25PM +0200, Thomas Gleixner wrote:
On Mon, 21 May 2012, Michael S. Tsirkin wrote:
We perform ISR lookups twice: during interrupt
injection and on EOI. Typical workloads only have
a single bit set there. So we can avoid ISR scans by
1. counting bits as we
On Tue, 22 May 2012, Michael S. Tsirkin wrote:
On Tue, May 22, 2012 at 12:14:18AM +0200, Thomas Gleixner wrote:
On Tue, 22 May 2012, Michael S. Tsirkin wrote:
On Mon, May 21, 2012 at 11:04:25PM +0200, Thomas Gleixner wrote:
@@ -242,6 +262,25 @@ static inline void apic_clear_irr(int
On 05/21/2012 04:06 PM, Michael S. Tsirkin wrote:
I think the reason is __apic_read which now simply copies the registers
out to guest, this code will become less straight-forward if it's not
1:1.
It can still be 1:1, just drop the 12 bytes of completely useless
padding after each 32-bit
On Tue, 22 May 2012, Michael S. Tsirkin wrote:
On Mon, May 21, 2012 at 11:04:25PM +0200, Thomas Gleixner wrote:
On Mon, 21 May 2012, Michael S. Tsirkin wrote:
+static u8 count_vectors(void *bitmap)
+{
+ u32 *word = bitmap;
+ int word_offset;
+ u8 count = 0;
+ for (word_offset
@@
-1711,6 +1717,22 @@ static bool vmx_rdtscp_supported(void)
return cpu_has_vmx_rdtscp();
}
+static bool vmx_pcid_supported(void) {
+ /*
+* This function is only for determining whether to expose PCID
bit
+* in
On Fri, 2012-05-18 at 15:12 +1000, Alexey Kardashevskiy wrote:
Alexander,
Is that any better? :)
Alex (Graf that is), ping ?
The original patch from Alexey was fine btw.
VFIO will always call things with the existing capability offset so
there's no real risk of doing the wrong thing or
On Fri, 2012-05-18 at 17:58 -0300, Marcelo Tosatti wrote:
See individual patches for details.
[...]
These came a little too late for 3.2.18, but I've queued them up now.
Ben.
--
Ben Hutchings
You can't have everything. Where would you put it?
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