On Tue, Feb 17, 2015 at 4:32 AM, Michael S. Tsirkin m...@redhat.com wrote:
On Tue, Feb 17, 2015 at 11:59:48AM +0100, Paolo Bonzini wrote:
On 17/02/2015 10:02, Michael S. Tsirkin wrote:
Increasing VHOST_MEMORY_MAX_NREGIONS from 65 to 509
to match KVM_USER_MEM_SLOTS fixes issue for
On Tue, Feb 17, 2015 at 04:53:45PM -0800, Eric Northup wrote:
On Tue, Feb 17, 2015 at 4:32 AM, Michael S. Tsirkin m...@redhat.com wrote:
On Tue, Feb 17, 2015 at 11:59:48AM +0100, Paolo Bonzini wrote:
On 17/02/2015 10:02, Michael S. Tsirkin wrote:
Increasing VHOST_MEMORY_MAX_NREGIONS
It seems like KVM doesn't implement the H_CLEAR_REF and H_CLEAR_MOD
hypervisor calls, which are absolutely critical for memory management in
the FreeBSD kernel (and are marked mandatory in the PAPR manual). It
seems some patches have been contributed already in
The following changes since commit b97f880c8342fd6e49a02c9ef7507a678722b2b3:
Merge branch 'for-3.19-fixes' of
git://git.kernel.org/pub/scm/linux/kernel/git/tj/libata (2015-01-21 07:54:16
+1200)
are available in the git repository at:
The option --probe allows to switch into probe mode also for machines
different from none. If one or more accelerators are specified these
accelerators are used to provide probable properties. If no accelerator
is given a list of accellerators that support probing is used.
Signed-off-by: Michael
The patch implements routines to set and retrieve processor configuration
data and to retrieve machine configuration data. The machine related data
is used together with the cpu model facility lists to determine the list of
supported cpu models of this host. The above mentioned routines have QEMU
This patch basically implements the routine:
- s390_select_cpu_model()
It tests if the the cpu classes have been initialized and the requested
cpu model is either a valid model or a valid alias. If these conditions
are met, the associated cpu model properties (cpu identifier, ibc value,
cpu
This patch implements the static part of the s390 cpu class definitions.
It defines s390 cpu models by means of virtual cpu ids (enum) which contain
information on the cpu generation, the machine class, the GA number and
the machine type. The cpu id is used to instantiate a cpu class per cpu
On Tue, 17 Feb 2015 14:29:31 +0100
Michael S. Tsirkin m...@redhat.com wrote:
On Tue, Feb 17, 2015 at 02:11:37PM +0100, Paolo Bonzini wrote:
On 17/02/2015 13:32, Michael S. Tsirkin wrote:
On Tue, Feb 17, 2015 at 11:59:48AM +0100, Paolo Bonzini wrote:
On 17/02/2015 10:02,
On 17/02/2015 16:02, Igor Mammedov wrote:
Not if there are about 6 regions, I think.
When memslots where increased to 509 and look up of them was replaced on
binary search results were on par with linear search for a default 13
memslots VM.
Adding LRU
You mean MRU. :)
cache helped
This patch implements the infrastructure to dynamically add cpu
model aliases.
Signed-off-by: Michael Mueller m...@linux.vnet.ibm.com
Reviewed-by: Cornelia Huck cornelia.h...@de.ibm.com
---
target-s390x/cpu-models.c | 77 +++
target-s390x/cpu-models.h
This patch implements a new QMP request named 'query-cpu-model'.
It returns the cpu model of cpu 0 and its backing accelerator.
request:
{execute : query-cpu-model }
answer:
{return : {name: 2827-ga2, accelerator: kvm }}
Alias names are resolved to their respective machine type and GA names
This patch provides routines to dynamically update the previously defined
S390 cpu classes in the current host context. The main function performing
this process is s390_setup_cpu_classes(). It takes the current host context
as parameter to setup the classes accordingly. It basically performs the
This patch implements the QMP command 'query-cpu-definitions' in the S390
context. The command returns a in terms of machine release date descending
sorted list of cpu model names in the current host context. A consumer may
successfully request each listed cpu model as long for a given accelerator
QEMU now switches into probe mode when the selected machine is none and no
specific accelerator(s) has been requested (i.e.: -machine none).
In probe mode a by ARCH_CONFIG defines predefined list of accelerators run
their init() methods.
Signed-off-by: Michael Mueller m...@linux.vnet.ibm.com
---
This patch set in combination with its kernel kvm patch set proposes an
implementation of S390 cpu models. The origin of this item is to provide
a means for management interfaces like libvirt to draw decisions if life
guest migration to a target hypervisor is reasonable.
A migration constraint is
On Tue, Feb 17, 2015 at 02:11:37PM +0100, Paolo Bonzini wrote:
On 17/02/2015 13:32, Michael S. Tsirkin wrote:
On Tue, Feb 17, 2015 at 11:59:48AM +0100, Paolo Bonzini wrote:
On 17/02/2015 10:02, Michael S. Tsirkin wrote:
Increasing VHOST_MEMORY_MAX_NREGIONS from 65 to 509
to match
On 17/02/2015 14:29, Michael S. Tsirkin wrote:
On Tue, Feb 17, 2015 at 02:11:37PM +0100, Paolo Bonzini wrote:
On 17/02/2015 13:32, Michael S. Tsirkin wrote:
On Tue, Feb 17, 2015 at 11:59:48AM +0100, Paolo Bonzini wrote:
On 17/02/2015 10:02, Michael S. Tsirkin wrote:
Increasing
This patch introduces the function cpu_desc_avail() which returns by
default true if not architecture specific implemented. Its intention
is to indicate if the cpu model description is available for display
by list_cpus(). This change allows cpu model descriptions to become
dynamically created by
On Tue, 17 Feb 2015 13:32:12 +0100
Michael S. Tsirkin m...@redhat.com wrote:
On Tue, Feb 17, 2015 at 11:59:48AM +0100, Paolo Bonzini wrote:
On 17/02/2015 10:02, Michael S. Tsirkin wrote:
Increasing VHOST_MEMORY_MAX_NREGIONS from 65 to 509
to match KVM_USER_MEM_SLOTS fixes issue
On 17/02/2015 15:44, Igor Mammedov wrote:
As alternative:
we can filter out hotplugged memory and vhost will continue to work with
only initial memory.
So question is id we have to tell vhost about hotplugged memory?
Yes, I think so.
Paolo
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This patch defines S390 cpu facilities and their presence at the
different cpu model levels. Beside defining a base which facilities
have to be requested per cpu model, these sets are associated to the
defined cpu classes and used to calculate the list of supported
cpu models in context of the
The patch introduces S390 CPU facilities bit numbers and names as well as
the architectural facility size limit in bytes.
Signed-off-by: Michael Mueller m...@linux.vnet.ibm.com
---
target-s390x/cpu-facilities.h | 76 +++
1 file changed, 76 insertions(+)
This patch enables QEMU to instantiate S390 CPUs with cpu model types.
Signed-off-by: Michael Mueller m...@linux.vnet.ibm.com
---
hw/s390x/s390-virtio.c | 6 ++
target-s390x/helper.c | 3 ++-
2 files changed, 8 insertions(+), 1 deletion(-)
diff --git a/hw/s390x/s390-virtio.c
This patch implements the functions:
- s390_get_proceccor_props()
- s390_set_proceccor_props()
They can be used to request or retrieve processor related information from an
accelerator.
That information comprises the cpu identifier, the ICB value and the facility
lists.
Signed-off-by: Michael
Signed-off-by: Michael Mueller m...@linux.vnet.ibm.com
---
linux-headers/asm-s390/kvm.h | 20
1 file changed, 20 insertions(+)
diff --git a/linux-headers/asm-s390/kvm.h b/linux-headers/asm-s390/kvm.h
index d36b2fa..e38c942 100644
--- a/linux-headers/asm-s390/kvm.h
+++
Kashyap Chamarthy kcham...@redhat.com writes:
..
Does enable_apicv make a difference?
Actually, I did perform a test (on Paolo's suggestion on IRC) with
enable_apicv=0 on physical host, and it didn't make any difference:
$ cat /proc/cmdline
On 2015-02-17 19:00, Bandan Das wrote:
Kashyap Chamarthy kcham...@redhat.com writes:
..
Does enable_apicv make a difference?
Actually, I did perform a test (on Paolo's suggestion on IRC) with
enable_apicv=0 on physical host, and it didn't make any difference:
$ cat /proc/cmdline
On 02/17/2015 07:24 AM, Michael Mueller wrote:
This patch implements the QMP command 'query-cpu-definitions' in the S390
context. The command returns a in terms of machine release date descending
sorted list of cpu model names in the current host context.
returns a list of cpu model names
On 02/15/2015 01:01 AM, Raghavendra K T wrote:
On 02/15/2015 11:25 AM, Raghavendra K T wrote:
Paravirt spinlock clears slowpath flag after doing unlock.
As explained by Linus currently it does:
prev = *lock;
add_smp(lock-tickets.head, TICKET_LOCK_INC);
* Peter Zijlstra | 2015-01-21 16:07:16 [+0100]:
On Tue, Jan 20, 2015 at 01:16:13PM -0500, Steven Rostedt wrote:
I'm actually wondering if we should just nuke the _interruptible()
version of swait. As it should only be all interruptible or all not
interruptible, that the swait_wake() should
On 02/17/2015 07:24 AM, Michael Mueller wrote:
This patch implements a new QMP request named 'query-cpu-model'.
It returns the cpu model of cpu 0 and its backing accelerator.
request:
{execute : query-cpu-model }
answer:
{return : {name: 2827-ga2, accelerator: kvm }}
Alias names
On 02/17/2015 07:24 AM, Michael Mueller wrote:
The option --probe allows to switch into probe mode also for machines
different from none. If one or more accelerators are specified these
accelerators are used to provide probable properties. If no accelerator
is given a list of accellerators
Juan Quintela quint...@redhat.com wrote:
Hi
Please, send any topic that you are interested in covering.
As there are no agenda, call got cancelled.
Have a good day, Juan.
Call details:
By popular demand, a google calendar public entry with it
On 17/02/2015 10:02, Michael S. Tsirkin wrote:
Increasing VHOST_MEMORY_MAX_NREGIONS from 65 to 509
to match KVM_USER_MEM_SLOTS fixes issue for vhost-net.
Signed-off-by: Igor Mammedov imamm...@redhat.com
This scares me a bit: each region is 32byte, we are talking
a 16K allocation that
On Tue, Feb 17, 2015 at 07:02:14AM +0100, Jan Kiszka wrote:
On 2015-02-16 21:40, Kashyap Chamarthy wrote:
I can observe this only one of the Intel Xeon machines (which has 48
CPUs and 1TB memory), but very reliably reproducible.
Reproducer:
- Just ensure physical host (L0) and
On Fri, Feb 13, 2015 at 03:49:59PM +, Igor Mammedov wrote:
since commit
1d4e7e3 kvm: x86: increase user memory slots to 509
it became possible to use a bigger amount of memory
slots, which is used by memory hotplug for
registering hotplugged memory.
However QEMU aborts if it's used
On Thu, Feb 12, 2015 at 07:12:06AM +0100, Jan Kiszka wrote:
On 2015-02-11 19:12, Kashyap Chamarthy wrote:
Hi,
This was tested with kernel-3.19.0-1.fc22) and QEMU (qemu-2.2.0-5.fc22)
on L0 L1.
Description
---
Inside L1, boot a nested KVM guest (L2) . Instead of a
On 02/16/2015 10:17 PM, David Vrabel wrote:
On 15/02/15 17:30, Raghavendra K T wrote:
--- a/arch/x86/xen/spinlock.c
+++ b/arch/x86/xen/spinlock.c
@@ -41,7 +41,7 @@ static u8 zero_stats;
static inline void check_zero(void)
{
u8 ret;
- u8 old = ACCESS_ONCE(zero_stats);
+
On 17/02/2015 13:32, Michael S. Tsirkin wrote:
On Tue, Feb 17, 2015 at 11:59:48AM +0100, Paolo Bonzini wrote:
On 17/02/2015 10:02, Michael S. Tsirkin wrote:
Increasing VHOST_MEMORY_MAX_NREGIONS from 65 to 509
to match KVM_USER_MEM_SLOTS fixes issue for vhost-net.
Signed-off-by: Igor
On Tue, Feb 17, 2015 at 11:59:48AM +0100, Paolo Bonzini wrote:
On 17/02/2015 10:02, Michael S. Tsirkin wrote:
Increasing VHOST_MEMORY_MAX_NREGIONS from 65 to 509
to match KVM_USER_MEM_SLOTS fixes issue for vhost-net.
Signed-off-by: Igor Mammedov imamm...@redhat.com
This
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