From: Liu Ping Fan
The device will demand the collection of vcpus' numa info, and
trigger the guest to rebuild the sched domain.
Signed-off-by: Liu Ping Fan
---
Makefile.target |1 +
hmp-commands.hx | 16 +
hw/qdev.h |1 +
hw/virt_sd.c
From: Liu Ping Fan
The guest's scheduler can not see the numa info on the host and
this will result to the following scene:
Supposing vcpu-a on nodeA, vcpu-b on nodeB, when load balance,
the tasks' pull and push between these vcpus will cost more. But
unfortunately, currently, the guest is
From: Liu Ping Fan
The guest's scheduler can not see the numa info on the host and
this will result to the following scene:
Supposing vcpu-a on nodeA, vcpu-b on nodeB, when load balance,
the tasks' pull and push between these vcpus will cost more. But
unfortunately, currently, the guest is just
From: Liu Ping Fan
A driver plays with Qemu's emulated "virt domain device". They aims to
export the host numa info to the guest.
--todo:
A more proper place to archive this driver?
Signed-off-by: Liu Ping Fan
---
drivers/virtio/Kconfig |4 ++
drivers/virtio/Makefile |1 +
drivers/
Currently, the guest can not know the NUMA info of the vcpu, which will
result in performance drawback. For example:
Supposing vcpu-a on nodeA, vcpu-b on nodeB, when load balance,
the tasks' pull and push between these vcpus will cost more. But
unfortunately, currently, the guest is just blind to
> >
> > The previous patch regards PCID and INVPCID as a whole because qemu
> doesn't support cpuid leaf 7 configuration at present. This is not the case
> in this
> version.
> > > The problem with cpu_has_hypervisor check is that its Linux specific.
> > > Any solution should also take into accoun
Needed for cpu_x86_inject_mce().
Signed-off-by: Andreas Färber
---
target-i386/kvm.c |8 +---
1 files changed, 5 insertions(+), 3 deletions(-)
diff --git a/target-i386/kvm.c b/target-i386/kvm.c
index 92ad338..758bf8f 100644
--- a/target-i386/kvm.c
+++ b/target-i386/kvm.c
@@ -221,8 +221,
CPUArchState is no longer needed.
Move the declaration to include/qemu/cpu.h and add documentation.
Signed-off-by: Andreas Färber
---
cpu-all.h|1 -
cpus.c |3 +--
hw/kvm/apic.c|2 +-
hw/kvmvapic.c|6 --
hw/ppce500_spin.c|2 +
Needed for run_on_cpu().
Signed-off-by: Andreas Färber
---
monitor.c|6 --
target-i386/cpu.h|2 +-
target-i386/helper.c |3 ++-
target-i386/kvm.c|2 +-
4 files changed, 8 insertions(+), 5 deletions(-)
diff --git a/monitor.c b/monitor.c
index 12a6fe2..07d2
Needed for moving halted field to CPUState.
Signed-off-by: Andreas Färber
---
target-i386/kvm.c |9 +
1 files changed, 5 insertions(+), 4 deletions(-)
diff --git a/target-i386/kvm.c b/target-i386/kvm.c
index f611a96..21de2e1 100644
--- a/target-i386/kvm.c
+++ b/target-i386/kvm.c
@@
Needed for moving interrupt_request and halted fields to CPUState.
Signed-off-by: Andreas Färber
---
target-i386/kvm.c |7 +--
1 files changed, 5 insertions(+), 2 deletions(-)
diff --git a/target-i386/kvm.c b/target-i386/kvm.c
index 21de2e1..f7651bf 100644
--- a/target-i386/kvm.c
+++ b/
On 05/22/2012 10:27 PM, Avi Kivity wrote:
> On 05/22/2012 08:31 AM, Gleb Natapov wrote:
>> On Mon, May 21, 2012 at 04:30:41PM -0300, Marcelo Tosatti wrote:
>>> 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
Signed-off-by: Andreas Färber
---
cpus.c | 13 +
exec.c |2 +-
hw/ppc.c |4 ++--
hw/ppce500_spin.c |2 +-
hw/spapr_rtas.c|5 -
hw/sun4m.c |2 +-
hw/sun4u.c |2 +-
include/qemu/cpu.h |8
k
Needed for the hypercall handlers.
Signed-off-by: Andreas Färber
---
hw/spapr.c |2 +-
hw/spapr.h |2 +-
hw/spapr_hcall.c |4 +++-
target-ppc/kvm.c |3 ++-
4 files changed, 7 insertions(+), 4 deletions(-)
diff --git a/hw/spapr.c b/hw/spapr.c
index 70068b4..f9c3631 10
Needed for qemu_cpu_kick().
Signed-off-by: Andreas Färber
---
target-s390x/kvm.c |6 --
1 files changed, 4 insertions(+), 2 deletions(-)
diff --git a/target-s390x/kvm.c b/target-s390x/kvm.c
index 2153e38..5800fd6 100644
--- a/target-s390x/kvm.c
+++ b/target-s390x/kvm.c
@@ -292,8 +292,10
Convert ipi_states to S390CPU**.
Needed for s390_cpu_restart() in handle_sigp().
Signed-off-by: Andreas Färber
---
hw/s390-virtio-bus.c |6 --
hw/s390-virtio.c |8
target-s390x/cpu.h |2 +-
target-s390x/kvm.c |6 --
4 files changed, 13 insertions(+), 9 d
Needed for qemu_cpu_kick().
Signed-off-by: Andreas Färber
---
target-ppc/kvm.c |8 ++--
1 files changed, 6 insertions(+), 2 deletions(-)
diff --git a/target-ppc/kvm.c b/target-ppc/kvm.c
index c09cc39..f111e87 100644
--- a/target-ppc/kvm.c
+++ b/target-ppc/kvm.c
@@ -71,8 +71,11 @@ static
CPUArchState is no longer needed there.
Also change the return type to bool.
Signed-off-by: Andreas Färber
---
cpu-all.h |1 -
cpus.c |4 +---
include/qemu/cpu.h | 11 +++
target-i386/kvm.c |4 ++--
4 files changed, 14 insertions(+), 6 deletions(-)
d
Also change return type to bool.
Signed-off-by: Andreas Färber
---
hw/apic.h|2 +-
hw/apic_common.c |2 +-
hw/pc.c |6 +++---
target-i386/helper.c |2 +-
target-i386/kvm.c|4 +++-
5 files changed, 9 insertions(+), 7 deletions(-)
diff --git a/
Hello,
This series, based on qom-next and the two pending ARM cleanup patches, starts
moving fields from CPUArchState (CPU_COMMON) to QOM CPUState. It stops short
of moving all easily possible fields (i.e., those not depending on target_ulong
or target_phys_addr_t) since the series got too long al
Change return type to bool, move to include/qemu/cpu.h and
add documentation.
Signed-off-by: Andreas Färber
---
cpus.c | 10 --
exec.c |3 ++-
hw/apic.c |2 +-
include/qemu/cpu.h | 10 ++
kvm-all.c |4 +++-
qemu-common.h
On Tue, May 22, 2012 at 12:46:54AM +, Mao, Junjie wrote:
> > > > @@
> > > > > -1711,6 +1717,22 @@ static bool vmx_rdtscp_supported(void)
> > > > > return cpu_has_vmx_rdtscp();
> > > > > }
> > > > >
> > > > > +static bool vmx_pcid_supported(void) {
> > > > > + /*
> > > > > + * Th
Folks,
today we discussed the situation of a qemu crash (with coredump) and big guests.
Quite often the guest pages are not needed but make the core file pretty big.
The most appealing proposal that we had was to adopt the core file code in the
kernel to have an option for discarding guest pages
On Mon, May 21, 2012 at 8:53 PM, Yanfei Zhang
wrote:
> 于 2012年05月22日 02:58, Eric Northup 写道:
[...]
>> So you can have the VMCS offset dumping be a manually-loaded module.
>> Build a database mapping from (CPUID, microcode revision) -> (VMCSINFO).
>> There's no need for anything beyond the (CPUID,
On Tue, 22 May 2012, Avi Kivity wrote:
> On 05/22/2012 12:04 AM, Thomas Gleixner wrote:
> > The only justification for having the same layout as the actual
> > hardware is when you are going to map the memory into the guest space,
> > which is not the case here.
>
> The APIC page is in fact mapped
Hello,
On Tue, May 22, 2012 at 03:30:37PM +0800, Asias He wrote:
> On 05/21/2012 11:42 PM, Tejun Heo wrote:
> 1) if the queue is stopped, q->request_fn() will never call called.
> we will be stuck in the loop forever. This can happen if the remove
> method is called after the q->request_fn() calls
https://bugzilla.kernel.org/show_bug.cgi?id=11963
Alan changed:
What|Removed |Added
Status|RESOLVED|CLOSED
--
Configure bugmail: https://bugzilla
https://bugzilla.kernel.org/show_bug.cgi?id=11963
Alan changed:
What|Removed |Added
Status|NEEDINFO|RESOLVED
CC|
On Thu, 17 May 2012 13:24:41 +0300
Avi Kivity wrote:
> diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
> index 2256f51..a2149d8 100644
> --- a/arch/x86/kvm/x86.c
> +++ b/arch/x86/kvm/x86.c
> @@ -3130,7 +3130,9 @@ int kvm_vm_ioctl_get_dirty_log(struct kvm *kvm, struct
> kvm_dirty_log *log)
>
example:
ovirt tests in client/tests/ovirt wants to use test from kvm/tests/
vm_type = ovirt
other_tests_dirs = "kvm"
This adds client/test/kvm/tests path to subtests dir group where
subtest will be searched.
Signed-off-by: Jiří Župka
---
client/tests/kvm/tests-shared.cfg.sample |
On 05/22/2012 08:31 AM, Gleb Natapov wrote:
> On Mon, May 21, 2012 at 04:30:41PM -0300, Marcelo Tosatti wrote:
>> 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 wr
Implementation of PV EOI using shared memory.
This reduces the number of exits an interrupt
causes as much as by half.
The idea is simple: there's a bit, per APIC, in guest memory,
that tells the guest that it does not need EOI.
We set it before injecting an interrupt and clear
before injecting a
Commit eb0dc6d0368072236dcd086d7fdc17fd3c4574d4 introduced apic
attention bitmask but kvm still syncs lapic unconditionally.
As that commit suggested and in anticipation of adding more attention
bits, only sync lapic if(apic_attention).
Signed-off-by: Michael S. Tsirkin
---
arch/x86/kvm/x86.c |
Document the new EOI MSR. Couldn't decide whether this change belongs
conceptually on guest or host side, so a separate patch.
Signed-off-by: Michael S. Tsirkin
---
Documentation/virtual/kvm/msr.txt | 32
1 files changed, 32 insertions(+), 0 deletions(-)
diff
__test_and_clear_bit is actually atomic with respect
to the local CPU. Add a note saying that KVM on x86
relies on this behaviour so people don't accidentaly break it.
Also warn not to rely on this in portable code.
Signed-off-by: Michael S. Tsirkin
---
arch/x86/include/asm/bitops.h |7 +
The idea is simple: there's a bit, per APIC, in guest memory,
that tells the guest that it does not need EOI.
Guest tests it using a single est and clear operation - this is
necessary so that host can detect interrupt nesting - and if set, it can
skip the EOI MSR.
I run a simple microbenchmark to
I'm looking at reducing the interrupt overhead for virtualized guests:
some workloads spend a large part of their time processing interrupts.
On kvm, an EOI write from the guest causes an expensive exit to host; we
avoid this using shared memory.
The patches work fine on my boxes. See individual
Juan Quintela wrote:
> Hi
>
> Please send in any agenda items you are interested in covering.
Hi
As there are no topics for the agenda, call is canceled for this week.
Happy hacking, Juan.
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To unsubscribe from this list: send the line "unsubscribe kvm" in
the body of a message to majord...@vg
https://bugzilla.kernel.org/show_bug.cgi?id=11219
Alan changed:
What|Removed |Added
Status|RESOLVED|CLOSED
--
Configure bugmail: https://bugzilla
https://bugzilla.kernel.org/show_bug.cgi?id=11219
Alan changed:
What|Removed |Added
Status|ASSIGNED|RESOLVED
CC|
Linus, please pull the KVM updates for the 3.5 cycle from
git://git.kernel.org/pub/scm/virt/kvm/kvm.git next
Changes include additional instruction emulation, page-crossing MMIO,
faster dirty logging, preventing the watchdog from killing a stopped
guest, module autoload, a new MSI ABI, and some
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 o
On 2012-05-21 03:50, Wen Congyang wrote:
> 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 paus
On 05/22/2012 12:04 AM, Thomas Gleixner wrote:
> >
> > +static u8 count_vectors(void *bitmap)
> > +{
> > + u32 *word = bitmap;
> > + int word_offset;
> > + u8 count = 0;
> > + for (word_offset = 0; word_offset < MAX_APIC_VECTOR >> 5; ++word_offset)
> > + count += hweight32(word[
On 05/22/2012 02:01 AM, Thomas Gleixner wrote:
> >
> > Others are not my fault :)
> >
> > Seriously, if Avi/Marcelo want to rewrite the ISR emulation
>
> Interesting POV, really.
>
> Did you ever notice that the kernel is a collaborative effort and not
> controlled by "Avi/Marcelo"?
>
> Did you e
On Sat, May 19, 2012 at 12:14 AM, Shirley Ma wrote:
> On Thu, 2012-05-17 at 17:20 +0800, Liu Ping Fan wrote:
>> 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
>>
1. Line up the columns with headings.
2. Add units for min/max/sum columns.
3. add_exit_timing only count the exited types. For other types, the min value
should be zero, instead of the init value (0x).
Signed-off-by: Olivia Yin
---
arch/powerpc/kvm/timing.c | 13 +
1 file
On 05/22/2012 04:59 AM, Michael S. Tsirkin wrote:
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
> -Original Message-
> From: Kevin Wolf [mailto:kw...@redhat.com]
> Sent: Monday, May 21, 2012 11:30 PM
> To: Ren, Yongjie
> Cc: Avi Kivity; kvm@vger.kernel.org; Liu, RongrongX
> Subject: Re: Biweekly KVM Test report, kernel 51bfd299... qemu
> a1fce560...
>
> Am 21.05.2012 11:45, schrieb R
On Tue, 2012-05-22 at 09:13 +0200, Alexander Graf wrote:
> On 22.05.2012, at 09:01, Alexey Kardashevskiy wrote:
> > This is internal kitchen of PCIDevice which I do not want to touch
> from anywhere but pci.c. And
> > there is no "fixup_capability" or something.
>
> Hrm. Maybe we should have one?
On 05/21/2012 11:42 PM, Tejun Heo wrote:
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 n
On 22.05.2012, at 09:01, Alexey Kardashevskiy wrote:
> On 22/05/12 16:31, Alexander Graf wrote:
>>
>>
>> On 22.05.2012, at 08:11, Alexey Kardashevskiy wrote:
>>
>>> On 22/05/12 15:52, Alexander Graf wrote:
On 22.05.2012, at 05:44, Alexey Kardashevskiy wrote:
> On 2
On 22/05/12 16:31, Alexander Graf wrote:
>
>
> On 22.05.2012, at 08:11, Alexey Kardashevskiy wrote:
>
>> On 22/05/12 15:52, Alexander Graf wrote:
>>>
>>>
>>> On 22.05.2012, at 05:44, Alexey Kardashevskiy wrote:
>>>
On 22/05/12 13:21, Alexander Graf wrote:
>
>
> On 22.05.2012,
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