We were incorrectly g_free'ing an object that isn't allocated
in one error path and failed to release it completely in another
This fixes qemu crashes with some cases of IO errors.
Signed-off-by: Benjamin Herrenschmidt b...@kernel.crashing.org
---
hw/spapr_vscsi.c |4 +++-
1 file changed, 3
On Tue, 12 Jun 2012 19:43:10 -0300, Marcelo Tosatti mtosa...@redhat.com wrote:
On Mon, Jun 04, 2012 at 10:36:05AM +0530, Nikunj A. Dadhania wrote:
The patch adds guest code for msr between guest and hypervisor. The
msr will export the vcpu running/pre-empted information to the guest
from
Hi Marcelo,
Thanks for the review.
On Tue, 12 Jun 2012 20:02:18 -0300, Marcelo Tosatti mtosa...@redhat.com wrote:
On Mon, Jun 04, 2012 at 10:37:24AM +0530, Nikunj A. Dadhania wrote:
flush_tlb_others_ipi depends on lot of statics in tlb.c. Replicated
the flush_tlb_others_ipi as
On 06/19/2012 05:51 AM, Asias He wrote:
On 06/18/2012 07:39 PM, Sasha Levin wrote:
On Mon, 2012-06-18 at 14:14 +0300, Dor Laor wrote:
On 06/18/2012 01:05 PM, Rusty Russell wrote:
On Mon, 18 Jun 2012 16:03:23 +0800, Asias Heas...@redhat.com wrote:
On 06/18/2012 03:46 PM, Rusty Russell wrote:
This adds a qemu-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
On 6/18/12, Stefan Hajnoczi stefa...@gmail.com wrote:
off. The code suggests that QEMU also logs an error message
(USBDEVFS_REAPURBNDELAY: Inappropriate ioctl for device) when this
happens. If you want, check the libvirt log file for this guest - it
probably has tons of these messages in it.
On Mon, Jun 18, 2012 at 05:25:05PM -0300, Marcelo Tosatti wrote:
On Mon, Jun 18, 2012 at 12:50:10PM +0300, Avi Kivity wrote:
On 06/16/2012 05:11 AM, Marcelo Tosatti wrote:
Can you introduce a separate exit reason, say KVM_EXIT_READ_FAULT, with
information about the fault?
I think
On 06/18/2012 11:25 PM, Marcelo Tosatti wrote:
On Mon, Jun 18, 2012 at 12:50:10PM +0300, Avi Kivity wrote:
On 06/16/2012 05:11 AM, Marcelo Tosatti wrote:
Can you introduce a separate exit reason, say KVM_EXIT_READ_FAULT, with
information about the fault?
I think you mean WRITE_FAULT.
Hi, Avi
Any comments for the patch?
Best Regards
Junjie Mao
-Original Message-
From: Marcelo Tosatti [mailto:mtosa...@redhat.com]
Sent: Saturday, June 16, 2012 10:32 AM
To: Mao, Junjie
Cc: 'kvm@vger.kernel.org'; Avi Kivity
Subject: Re: [PATCH v4] KVM: x86: Implement PCID/INVPCID
On 06/18/2012 08:47 PM, Christoffer Dall wrote:
On Mon, Jun 18, 2012 at 9:08 AM, Avi Kivity a...@redhat.com wrote:
On 06/15/2012 10:07 PM, Christoffer Dall wrote:
From: Marc Zyngier marc.zyng...@arm.com
In order to avoid compilation failure when KVM is not compiled in,
guard the mmu_notifier
On 06/18/2012 08:55 PM, Christoffer Dall wrote:
On Mon, Jun 18, 2012 at 9:12 AM, Avi Kivity a...@redhat.com wrote:
On 06/15/2012 10:07 PM, Christoffer Dall wrote:
Adds support in the identity mapping feature that allows KVM to setup
identity mapping for the Hyp mode with the AP[1] bit set as
On 06/18/2012 11:56 PM, Christoffer Dall wrote:
On Mon, Jun 18, 2012 at 9:32 AM, Avi Kivity a...@redhat.com wrote:
On 06/15/2012 10:08 PM, Christoffer Dall wrote:
From: Christoffer Dall cd...@cs.columbia.edu
Userspace can inject IRQs and FIQs through the KVM_IRQ_LINE VM ioctl.
This ioctl is
On 06/19/2012 01:05 AM, Christoffer Dall wrote:
Premature, but this is sad. I suggest you split vmid generation from
next available vmid. This allows you to make the generation counter
atomic so it may be read outside the lock.
You can do
if (likely(kvm-arch.vmd_gen) ==
On 06/18/2012 10:32 PM, Jimmy Crossley wrote:
I have mostly solved this issue. The sound works much, much, better, but is
still not as good as on my host machine.
I installed PulseAudio and used it instead of ALSA. In order to get kvm to
use it, I set the environment variable
On 06/19/2012 01:20 AM, Christoffer Dall wrote:
On Mon, Jun 18, 2012 at 9:45 AM, Avi Kivity a...@redhat.com wrote:
On 06/15/2012 10:09 PM, Christoffer Dall wrote:
From: Christoffer Dall cd...@cs.columbia.edu
Handles the guest faults in KVM by mapping in corresponding user pages
in the 2nd
On Tue, Jun 19, 2012 at 5:24 AM, Asias He as...@redhat.com wrote:
On 06/18/2012 06:58 PM, Stefan Hajnoczi wrote:
As long as the latency is decreasing that's good. But It's worth
keeping in mind that these percentages are probably wildly different
on real storage devices and/or qemu-kvm.
On Tue, Jun 19, 2012 at 12:32:06PM +0300, Avi Kivity wrote:
On 06/19/2012 01:20 AM, Christoffer Dall wrote:
On Mon, Jun 18, 2012 at 9:45 AM, Avi Kivity a...@redhat.com wrote:
On 06/15/2012 10:09 PM, Christoffer Dall wrote:
From: Christoffer Dall cd...@cs.columbia.edu
Handles the guest
On 06.06.2012, at 17:52, Alexander Graf wrote:
On 06/06/2012 02:28 PM, Avi Kivity wrote:
On 06/01/2012 01:20 PM, Paul Mackerras wrote:
At the moment we call kvmppc_pin_guest_page() in kvmppc_update_vpa()
with two spinlocks held: the vcore lock and the vcpu-vpa_update_lock.
This is not good,
Am 19.06.2012 08:02, schrieb Benjamin Herrenschmidt:
We were incorrectly g_free'ing an object that isn't allocated
in one error path and failed to release it completely in another
This fixes qemu crashes with some cases of IO errors.
Signed-off-by: Benjamin Herrenschmidt
On 06/19/2012 01:50 PM, Alexander Graf wrote:
On 06.06.2012, at 17:52, Alexander Graf wrote:
On 06/06/2012 02:28 PM, Avi Kivity wrote:
On 06/01/2012 01:20 PM, Paul Mackerras wrote:
At the moment we call kvmppc_pin_guest_page() in kvmppc_update_vpa()
with two spinlocks held: the vcore lock
From: Takuya Yoshikawa yoshikawa.tak...@oss.ntt.co.jp
The following commit did not care about the error handling path:
commit c1a7b32a14138f908df52d7c53b5ce3415ec6b50
KVM: Avoid wasting pages for small lpage_info arrays
If memory allocation fails, vfree() will be called with the address
On 06/19/2012 04:04 PM, Takuya Yoshikawa wrote:
From: Takuya Yoshikawa yoshikawa.tak...@oss.ntt.co.jp
The following commit did not care about the error handling path:
commit c1a7b32a14138f908df52d7c53b5ce3415ec6b50
KVM: Avoid wasting pages for small lpage_info arrays
If memory
On Mon, 18 Jun 2012 15:11:42 +0300
Avi Kivity a...@redhat.com wrote:
Potential for improvement: don't do 512 iterations on same large page.
Something like
if ((gfn ^ prev_gfn) mask(level))
ret |= handler(...)
with clever selection of the first prev_gfn so it always matches
Thanks for that reminder, Avi. You are right - it would be best to not be
running kvm as root or with any special capabilities. I mainly wanted to
report back that I got the sound working by switching to PulseAudio. I made
the other changes so I would not have to run kvm as root and it would
Juan Quintela quint...@redhat.com wrote:
Hi
Please send in any agenda items you are interested in covering.
Anthony suggested for last week:
- multithreading vhost (and general vhost improvements)
I suggest:
- status of migration: post-copy, IDL, XBRLE, huge memory, ...
Will send an
On 06/19/2012 08:54 AM, Juan Quintela wrote:
Juan Quintelaquint...@redhat.com wrote:
Hi
Please send in any agenda items you are interested in covering.
Anthony suggested for last week:
- multithreading vhost (and general vhost improvements)
I suggest:
- status of migration: post-copy, IDL,
On Tue, 19 Jun 2012 09:01:36 -0500
Anthony Liguori anth...@codemonkey.ws wrote:
I'm not at all convinced that postcopy is a good idea. There needs a clear
expression of what the value proposition is that's backed by benchmarks.
Those
benchmarks need to include latency measurements of
Hello,
Wanted to share some preliminary data from live migration experiments on a
setup
that is perhaps one of the larger ones.
We used Juan's huge_memory patches (without the separate migration thread)
and
measured the total migration time and the time taken for stage 3 (downtime).
Note:
On Tue, Jun 19, 2012 at 03:54:23PM +0200, Juan Quintela wrote:
Juan Quintela quint...@redhat.com wrote:
Hi
Please send in any agenda items you are interested in covering.
Anthony suggested for last week:
- multithreading vhost (and general vhost improvements)
I suggest:
- status
On Tue, Jun 19, 2012 at 11:34:42PM +0900, Takuya Yoshikawa wrote:
On Tue, 19 Jun 2012 09:01:36 -0500
Anthony Liguori anth...@codemonkey.ws wrote:
I'm not at all convinced that postcopy is a good idea. There needs a clear
expression of what the value proposition is that's backed by
Hello,
On Mon, Jun 18, 2012 at 7:02 PM, Asias He as...@redhat.com wrote:
I *hope* this is a bit prettier. e.g. Do we really need to pass in
@sglist and keep using goto new_segment?
I think this deserves another patch on top of this splitting one. I'd like
to clean this up later.
Yeap,
I just noticed include/asm-generic/Kbuild.asm already had
ifneq ($(wildcard $(srctree)/arch/$(SRCARCH)/include/asm/kvm_para.h \
$(srctree)/include/asm-$(SRCARCH)/kvm_para.h),)
header-y += kvm_para.h
endif
but this doesn't seem to work.
Kbuild people: which
On Tue, Jun 19, 2012 at 08:48:03PM +0200, Sam Ravnborg wrote:
I just noticed include/asm-generic/Kbuild.asm already had
ifneq ($(wildcard $(srctree)/arch/$(SRCARCH)/include/asm/kvm_para.h \
$(srctree)/include/asm-$(SRCARCH)/kvm_para.h),)
header-y += kvm_para.h
On Tue, 2012-06-19 at 13:31 +0200, Andreas Färber wrote:
Tab alert. :)
Argh :-) Gotta get an emacs config for use with qemu :-)
Cheers,
Ben.
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On 19.06.2012, at 22:18, Benjamin Herrenschmidt wrote:
On Tue, 2012-06-19 at 13:31 +0200, Andreas Färber wrote:
Tab alert. :)
Argh :-) Gotta get an emacs config for use with qemu :-)
So do you want to resend? I can just fix it on the fly too.
Alex
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In ple handler code, last_boosted_vcpu (lbv) variable is
serving as reference point to start when we enter.
lbv = kvm-lbv;
for each vcpu i of kvm
if i is eligible
if yield_to(i) is success
lbv = i
currently this variable is per VM and it is set after we do
On Tue, 2012-06-19 at 22:20 +0200, Alexander Graf wrote:
So do you want to resend? I can just fix it on the fly too.
If you can then sure, please do :-)
Cheers,
Ben.
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the body of a message to majord...@vger.kernel.org
More
On Wed, 20 Jun 2012 01:50:50 +0530
Raghavendra K T raghavendra...@linux.vnet.ibm.com wrote:
In ple handler code, last_boosted_vcpu (lbv) variable is
serving as reference point to start when we enter.
Also statistical analysis (below) is showing lbv is not very well
distributed with current
On 19.06.2012, at 08:21, Benjamin Herrenschmidt wrote:
This adds a qemu-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 19.06.2012, at 07:56, 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 19.06.2012, at 08:02, Benjamin Herrenschmidt wrote:
We were incorrectly g_free'ing an object that isn't allocated
in one error path and failed to release it completely in another
This fixes qemu crashes with some cases of IO errors.
Signed-off-by: Benjamin Herrenschmidt
From: root r...@hydra11.kio
Changes since v1:
- Use bitmap functions that are already in qemu (instead
of cpu_set_t macro's)
- Added a check for endvalue = max_cpus.
- Fix to address the round-robbing assignment (for the case
when cpu's are not explicitly specified)
Hi all,
is there any existing function in KVM that can map a host virtual
address (hva) to the guest address space. So that the guest VM can
access it.
i.e. translate hva to a gpa or gva or gfn, so the guest VM can use
that converted address to access?
Thanks,
Sheng
--
To unsubscribe from this
Hey everyone,
I just subscribed to this list so please forgive me if I goof something up.
I was looking into the possibility of porting VMM to OSX. Is this on the
todo list already? Or something that anyone else is hoping for? Since it's
all written in Python (with GTK for the UI), it doesn't
On Tue, Jun 19, 2012 at 6:09 PM, sheng qiu herbert1984...@gmail.com wrote:
Hi all,
is there any existing function in KVM that can map a host virtual
address (hva) to the guest address space. So that the guest VM can
access it.
i.e. translate hva to a gpa or gva or gfn, so the guest VM can
On Tue, Jun 19, 2012 at 4:49 AM, Avi Kivity a...@redhat.com wrote:
On 06/18/2012 11:56 PM, Christoffer Dall wrote:
On Mon, Jun 18, 2012 at 9:32 AM, Avi Kivity a...@redhat.com wrote:
On 06/15/2012 10:08 PM, Christoffer Dall wrote:
From: Christoffer Dall cd...@cs.columbia.edu
Userspace can
On Tue, Jun 19, 2012 at 5:16 AM, Avi Kivity a...@redhat.com wrote:
On 06/19/2012 01:05 AM, Christoffer Dall wrote:
Premature, but this is sad. I suggest you split vmid generation from
next available vmid. This allows you to make the generation counter
atomic so it may be read outside the
On Tue, Jun 19, 2012 at 11:27 PM, Christoffer Dall
c.d...@virtualopensystems.com wrote:
On Tue, Jun 19, 2012 at 5:16 AM, Avi Kivity a...@redhat.com wrote:
On 06/19/2012 01:05 AM, Christoffer Dall wrote:
Premature, but this is sad. I suggest you split vmid generation from
next available vmid.
On 06/19/2012 02:21 PM, Dor Laor wrote:
On 06/19/2012 05:51 AM, Asias He wrote:
On 06/18/2012 07:39 PM, Sasha Levin wrote:
On Mon, 2012-06-18 at 14:14 +0300, Dor Laor wrote:
On 06/18/2012 01:05 PM, Rusty Russell wrote:
On Mon, 18 Jun 2012 16:03:23 +0800, Asias Heas...@redhat.com wrote:
On
Greetings!
I want to develop a Virtio host module to emulate 802.11 wireless networks.
Here's the motivation:
I am a PhD student working in wireless networks. I've been using a cluster of
32 KVM guest nodes to emulate wireless nodes and testing mobile Ad-hoc routing
protocols. I use iptables
We were incorrectly g_free'ing an object that isn't allocated
in one error path and failed to release it completely in another
This fixes qemu crashes with some cases of IO errors.
Signed-off-by: Benjamin Herrenschmidt b...@kernel.crashing.org
---
hw/spapr_vscsi.c |4 +++-
1 file changed, 3
This adds a qemu-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
On 06.06.2012, at 17:52, Alexander Graf wrote:
On 06/06/2012 02:28 PM, Avi Kivity wrote:
On 06/01/2012 01:20 PM, Paul Mackerras wrote:
At the moment we call kvmppc_pin_guest_page() in kvmppc_update_vpa()
with two spinlocks held: the vcore lock and the vcpu-vpa_update_lock.
This is not good,
Am 19.06.2012 08:02, schrieb Benjamin Herrenschmidt:
We were incorrectly g_free'ing an object that isn't allocated
in one error path and failed to release it completely in another
This fixes qemu crashes with some cases of IO errors.
Signed-off-by: Benjamin Herrenschmidt
On 06/19/2012 01:50 PM, Alexander Graf wrote:
On 06.06.2012, at 17:52, Alexander Graf wrote:
On 06/06/2012 02:28 PM, Avi Kivity wrote:
On 06/01/2012 01:20 PM, Paul Mackerras wrote:
At the moment we call kvmppc_pin_guest_page() in kvmppc_update_vpa()
with two spinlocks held: the vcore lock
On Mon, 18 Jun 2012 15:11:42 +0300
Avi Kivity a...@redhat.com wrote:
Potential for improvement: don't do 512 iterations on same large page.
Something like
if ((gfn ^ prev_gfn) mask(level))
ret |= handler(...)
with clever selection of the first prev_gfn so it always matches
On Tue, 2012-06-19 at 13:31 +0200, Andreas Färber wrote:
Tab alert. :)
Argh :-) Gotta get an emacs config for use with qemu :-)
Cheers,
Ben.
--
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the body of a message to majord...@vger.kernel.org
More majordomo info at
On 19.06.2012, at 22:18, Benjamin Herrenschmidt wrote:
On Tue, 2012-06-19 at 13:31 +0200, Andreas Färber wrote:
Tab alert. :)
Argh :-) Gotta get an emacs config for use with qemu :-)
So do you want to resend? I can just fix it on the fly too.
Alex
--
To unsubscribe from this list: send
On Tue, 2012-06-19 at 22:20 +0200, Alexander Graf wrote:
So do you want to resend? I can just fix it on the fly too.
If you can then sure, please do :-)
Cheers,
Ben.
--
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the body of a message to majord...@vger.kernel.org
More
On 19.06.2012, at 08:21, Benjamin Herrenschmidt wrote:
This adds a qemu-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 19.06.2012, at 07:56, 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 19.06.2012, at 08:02, Benjamin Herrenschmidt wrote:
We were incorrectly g_free'ing an object that isn't allocated
in one error path and failed to release it completely in another
This fixes qemu crashes with some cases of IO errors.
Signed-off-by: Benjamin Herrenschmidt
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