Il 31/07/2012 22:52, Eric Northup ha scritto:
> It seems to me like this is not the way that virtio devices are supposed
> to behave - if a guest splits a virtio_scsi_cmd_req or _resp across a
> page boundary, then this code won't work.
Buffers can cover several pages. Of course, data buffers hav
Signed-off-by: Alex Williamson
---
MAINTAINERS |5 +
configure | 12
hw/i386/Makefile.objs |1 +
3 files changed, 18 insertions(+)
diff --git a/MAINTAINERS b/MAINTAINERS
index 2d219d2..9680d69 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -460,6
Signed-off-by: Alex Williamson
---
linux-headers/linux/vfio.h | 368
1 file changed, 368 insertions(+)
create mode 100644 linux-headers/linux/vfio.h
diff --git a/linux-headers/linux/vfio.h b/linux-headers/linux/vfio.h
new file mode 100644
index 000
VFIO kernel support was just merged into Linux, so I'd like to
formally propose inclusion of the QEMU vfio-pci driver for
QEMU 1.2. Included here is support for x86 PCI device assignment.
PCI INTx is not yet enabled, but devices making use of either MSI
or MSI-X work. The level irqfd and eoifd su
On Thu, Jul 26, 2012 at 02:22:48PM +0200, Markus Trippelsdorf wrote:
> Every time I start qemu-kvm on my system the following line is added to
> the syslog:
>
> vcpu0 unhandled rdmsr: 0xc0010001
>
> AFAICS all calls to vcpu_unimpl only contain debugging info with little
> or no value for the end
On Thu, Jul 26, 2012 at 06:01:49PM +0300, Avi Kivity wrote:
> While preparing to fix up KVM_REQ_PENDING_TIMERS, and looking for a bug that
> turned
> out not to exist, I cleaned up kvm_timer a little.
>
> Avi Kivity (4):
> KVM: Remove internal timer abstraction.
> KVM: Simplify kvm_timer
>
Hi Avi !
We identified a problem on powerpc which seems to actually be a generic
issue, and Alex suggested we propose a generic fix. I want to make sure
we are on the right track first before proposing an actual patch as we
would like the patch to go in ASAP (ie not waiting the next merge
window)
On Tue, Jul 24, 2012 at 02:23:59PM +0530, Raghavendra K T wrote:
> From: Raghavendra K T
>
> Thanks Alex for KVM_HC_FEATURES inputs and Jan for VAPIC_POLL_IRQ,
> and Peter (HPA) for suggesting hypercall ABI addition.
>
> Signed-off-by: Raghavendra K T
> ---
> Please have a closer look at Hyperc
On 01.08.2012, at 04:13, Scott Wood wrote:
> On 07/31/2012 06:59 PM, Alexander Graf wrote:
>> Well, user space always comes in via the ioctl path, which in turn
>> does vcpu_load(vcpu), thus should always be running as the vcpu
>> context itself.
>
> Right, it's the timers you're racing with.
>
On 20.07.2012, at 07:23, Bharat Bhushan wrote:
> Enable the KVM emulated watchdog if KVM supports (use the
> capability enablement in watchdog handler). Also watchdog exit
> (KVM_EXIT_WATCHDOG) handling is added.
> Watchdog state machine is cleared whenever VM state changes to running.
> This is
On 07/31/2012 06:59 PM, Alexander Graf wrote:
> Well, user space always comes in via the ioctl path, which in turn
> does vcpu_load(vcpu), thus should always be running as the vcpu
> context itself.
Right, it's the timers you're racing with.
> It boils down to the original thing I was saying back
On Tue, Jul 31, 2012 at 05:18:11PM -0700, Paul E. McKenney wrote:
> On Tue, Jul 31, 2012 at 08:09:38PM -0400, Steven Rostedt wrote:
> > On Tue, 2012-07-31 at 16:57 -0700, Paul E. McKenney wrote:
> >
> > > > What was the next lines? I bet you it was "PASSED". Which means it did
> > > > not fail. Th
On Tue, Jul 31, 2012 at 08:09:38PM -0400, Steven Rostedt wrote:
> On Tue, 2012-07-31 at 16:57 -0700, Paul E. McKenney wrote:
>
> > > What was the next lines? I bet you it was "PASSED". Which means it did
> > > not fail. This is the second bug you found that has to do with RCU being
> > > called in
On Tue, 2012-07-31 at 16:57 -0700, Paul E. McKenney wrote:
> > What was the next lines? I bet you it was "PASSED". Which means it did
> > not fail. This is the second bug you found that has to do with RCU being
> > called in 'idle'. The one that Paul posted a patch for.
>
> Though it needs anothe
On 31.07.2012, at 23:24, Scott Wood wrote:
> On 07/31/2012 06:50 AM, Alexander Graf wrote:
>>
>> On 25.07.2012, at 05:49, Bharat Bhushan wrote:
>>
>>> This patch adds the watchdog emulation in KVM. The watchdog
>>> emulation is enabled by KVM_ENABLE_CAP(KVM_CAP_PPC_BOOKE_WATCHDOG) ioctl.
>>> Th
On Tue, Jul 31, 2012 at 07:51:39PM -0400, Steven Rostedt wrote:
> On Wed, 2012-08-01 at 07:43 +0800, Fengguang Wu wrote:
> > On Tue, Jul 31, 2012 at 09:13:39AM -0400, Steven Rostedt wrote:
> > > On Tue, 2012-07-31 at 15:50 +0300, Avi Kivity wrote:
> > > > On 07/31/2012 03:43 PM, Steven Rostedt wrot
On Tue, Jul 31, 2012 at 07:51:39PM -0400, Steven Rostedt wrote:
> On Wed, 2012-08-01 at 07:43 +0800, Fengguang Wu wrote:
> > On Tue, Jul 31, 2012 at 09:13:39AM -0400, Steven Rostedt wrote:
> > > On Tue, 2012-07-31 at 15:50 +0300, Avi Kivity wrote:
> > > > On 07/31/2012 03:43 PM, Steven Rostedt wrot
On Wed, 2012-08-01 at 07:43 +0800, Fengguang Wu wrote:
> On Tue, Jul 31, 2012 at 09:13:39AM -0400, Steven Rostedt wrote:
> > On Tue, 2012-07-31 at 15:50 +0300, Avi Kivity wrote:
> > > On 07/31/2012 03:43 PM, Steven Rostedt wrote:
> >
> > > That would be better. A hypervisor might be real-time cap
On Tue, Jul 31, 2012 at 09:13:39AM -0400, Steven Rostedt wrote:
> On Tue, 2012-07-31 at 15:50 +0300, Avi Kivity wrote:
> > On 07/31/2012 03:43 PM, Steven Rostedt wrote:
>
> > That would be better. A hypervisor might be real-time capable (with
> > some effort kvm can do this), so we don't want to
On 07/31/2012 06:50 AM, Alexander Graf wrote:
>
> On 25.07.2012, at 05:49, Bharat Bhushan wrote:
>
>> This patch adds the watchdog emulation in KVM. The watchdog
>> emulation is enabled by KVM_ENABLE_CAP(KVM_CAP_PPC_BOOKE_WATCHDOG) ioctl.
>> The kernel timer are used for watchdog emulation and em
On Mon, Jul 30, 2012 at 10:49 PM, Xiao Guangrong
wrote:
> On 07/31/2012 01:18 AM, Sunil wrote:
>> Hello List,
>>
>> I am a KVM newbie and studying KVM mmu code.
>>
>> On the existing guest, I am trying to track all guest writes by
>> marking page table entry as read-only in EPT entry [ I am using
On Tue, 2012-07-31 at 08:53 -0600, Alex Williamson wrote:
> On Mon, 2012-07-30 at 22:11 -0700, Linus Torvalds wrote:
> > On Mon, Jul 30, 2012 at 4:17 PM, Alex Williamson
> > wrote:
> > >
> > > I'm pretty anxious to find out as well. Linus, ping, any thoughts on
> > > including this in 3.6? Thank
On Tue, Jul 31, 2012 at 12:11:13PM +0300, Avi Kivity wrote:
> On 07/31/2012 02:36 AM, Marcelo Tosatti wrote:
> > On Mon, Jul 30, 2012 at 07:39:31PM +0300, Avi Kivity wrote:
> >> On 07/30/2012 05:07 PM, Chris Clayton wrote:
> >> >>
> >> With kernel 3.5.0 with b2da15ac26a0c00 reverted, I have ju
Now i got it working - sorry used old gdb.
This is the backtrace:
Core was generated by `/usr/bin/qemu-system-x86_64 -id 103 -chardev
socket,id=qmp,path=/var/run/qemu-s'.
Program terminated with signal 11, Segmentation fault.
#0 0x7f6ca10faed8 in ?? () from /lib/libc.so.6
(gdb) where
#0
Am 31.07.2012 16:54, schrieb Avi Kivity:
On 07/31/2012 02:59 PM, Stefan Priebe - Profihost AG wrote:
Hello list,
i hope it is correct to list the maintainers of kvm. While trying to
install ubuntu 12.04 amd64 on a kvm based vm the KVM process segfaults
while ubuntu tries to detect the HW:
kvm[2
On Tue, 2012-07-31 at 15:34 +0300, Avi Kivity wrote:
> On 07/31/2012 01:29 AM, Alex Williamson wrote:
> >>
> >> If the region size is zero, then both memory_region_del_subregion()
> >> (assuming the region is parented) and munmap() do nothing. So you could
> >> call this unconditionally.
> >
> >
On 07/31/2012 07:29 PM, Marcelo Tosatti wrote:
>>
>> So the same problem should happen with %fs and %gs, no?
>
> AFAICS:
>
> depends on CONFIG_X86_32_LAZY_GS for GS, unconditional for FS.
This fs/gs were already in there, I wonder how it wasn't broken before.
Something's fishy here.
>
>> x8
Am 31.07.2012 18:06, schrieb Igor Mammedov:
> - Original Message -
>> From: "Eduardo Habkost"
>> To: "Juan Quintela" , "Anthony Liguori"
>>
>> Cc: qemu-de...@nongnu.org, "KVM devel mailing list"
>> Sent: Tuesday, July 31, 2012 5:40:14 PM
>> Subject: Re: [Qemu-devel] KVM call minutes Jul
- Original Message -
> From: "Eduardo Habkost"
> To: "Juan Quintela" , "Anthony Liguori"
>
> Cc: qemu-de...@nongnu.org, "KVM devel mailing list"
> Sent: Tuesday, July 31, 2012 5:40:14 PM
> Subject: Re: [Qemu-devel] KVM call minutes July 31th
>
> On Tue, Jul 31, 2012 at 04:32:05PM +0200
Am 31.07.2012 17:40, schrieb Eduardo Habkost:
> On Tue, Jul 31, 2012 at 04:32:05PM +0200, Juan Quintela wrote:
>> - 1.2 plans for CPU model versioning/compatibility (eduardo)
>> (global properties vs QOM vs qdev)
>> how to do it ? configuration file? moving back to the code?
>> different ex
On Tue, Jul 31, 2012 at 04:32:05PM +0200, Juan Quintela wrote:
> - 1.2 plans for CPU model versioning/compatibility (eduardo)
> (global properties vs QOM vs qdev)
> how to do it ? configuration file? moving back to the code?
> different external interface from internal one
Another question
On Tue, Jul 31, 2012 at 04:32:05PM +0200, Juan Quintela wrote:
> - 1.2 plans for CPU model versioning/compatibility (eduardo)
> (global properties vs QOM vs qdev)
> how to do it ? configuration file? moving back to the code?
> different external interface from internal one
(CCing libvir-li
On 07/31/2012 02:59 PM, Stefan Priebe - Profihost AG wrote:
> Hello list,
>
> i hope it is correct to list the maintainers of kvm. While trying to
> install ubuntu 12.04 amd64 on a kvm based vm the KVM process segfaults
> while ubuntu tries to detect the HW:
> kvm[2978]: segfault at 7fb90d9035e0 i
On Mon, 2012-07-30 at 22:11 -0700, Linus Torvalds wrote:
> On Mon, Jul 30, 2012 at 4:17 PM, Alex Williamson
> wrote:
> >
> > I'm pretty anxious to find out as well. Linus, ping, any thoughts on
> > including this in 3.6? Thanks,
>
> I just pulled it, but then I unpulled again when I realized it
On 07/31/2012 04:30 PM, Aneesh Kumar K.V wrote:
>
> Did this help ?
>
> http://mid.gmane.org/1343719453-26768-1-git-send-email-aneesh.ku...@linux.vnet.ibm.com
>
It did: thanks.
--
error compiling committee.c: too many arguments to function
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Avi Kivity writes:
> On 07/31/2012 09:51 AM, Aneesh Kumar K.V wrote:
>> Avi Kivity writes:
>>
>>> Having an annoying bug on i386 kvm I decided to debug it buy running an
>>> i386 guest on my x86_64 host, use 9p to access a guest image, and run it
>>> using nested kvm.
>>>
>>> However, 9p appear
Ping? Can anybody help Vinod, here? How can we get the attention of some
maintainer, to get this pulled in?
On Wed, Jul 18, 2012 at 06:26:52PM +, Vinod, Chegu wrote:
> Thanks Eduardo !
>
> Hi Anthony, If you are ok with this patch...could you pl pull these changes
> into upstream (or)
> s
On Mon, Jul 30, 2012 at 09:34:05AM +0200, Juan Quintela wrote:
>
> Hi
>
> Please send in any agenda items you are interested in covering.
- 1.2 plans for CPU model versioning/compatibility
(global properties vs QOM vs qdev)
--
Eduardo
--
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On Tue, 2012-07-31 at 15:50 +0300, Avi Kivity wrote:
> On 07/31/2012 03:43 PM, Steven Rostedt wrote:
> That would be better. A hypervisor might be real-time capable (with
> some effort kvm can do this), so we don't want to turn off real time
> features just based on that.
It would only turn off
On Mon, Jul 30, 2012 at 8:34 AM, Juan Quintela wrote:
> Please send in any agenda items you are interested in covering.
QEMU 1.2 Test Day
* Let's find -rc bugs and ensure the release is stable
* We've done this in the past and have a wiki template but can
discuss suggestions on the call
Stefan
On 07/31/2012 03:43 PM, Steven Rostedt wrote:
> On Tue, 2012-07-31 at 15:37 +0300, Avi Kivity wrote:
>> On 07/31/2012 03:17 PM, Fengguang Wu wrote:
>> >
>> > It's good to quickly get to the root cause :) Can we possibly detect
>> > whether we are in a virtual machine and hence skip this particular
On Tue, 2012-07-31 at 15:37 +0300, Avi Kivity wrote:
> On 07/31/2012 03:17 PM, Fengguang Wu wrote:
> >
> > It's good to quickly get to the root cause :) Can we possibly detect
> > whether we are in a virtual machine and hence skip this particular
> > test case?
>
> cpu_has(&boot_cpu, X86_FEATURE_
On 07/30/2012 08:47 AM, Richard Yao wrote:
> Is there any documentation on how QEMU communicates with KVM?
>
See Documentation/virtual/kvm/api.txt.
--
error compiling committee.c: too many arguments to function
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the body of a
On 07/31/2012 03:17 PM, Fengguang Wu wrote:
>
> It's good to quickly get to the root cause :) Can we possibly detect
> whether we are in a virtual machine and hence skip this particular
> test case?
cpu_has(&boot_cpu, X86_FEATURE_HYPERVISOR)
--
error compiling committee.c: too many arguments to
On 07/31/2012 01:29 AM, Alex Williamson wrote:
>>
>> If the region size is zero, then both memory_region_del_subregion()
>> (assuming the region is parented) and munmap() do nothing. So you could
>> call this unconditionally.
>
> I suppose parenting them is the key. I'm counting on memory_regio
[CC kvm developers]
On Mon, Jul 30, 2012 at 11:45:05AM -0400, Steven Rostedt wrote:
> On Tue, 2012-07-24 at 17:07 +0800, Fengguang Wu wrote:
> > On Tue, Jul 24, 2012 at 05:03:30PM +0800, Fengguang Wu wrote:
>
> > And this warning shows up in one of the dozens of boots, for the same
> > kconfig.
>
On 07/31/2012 09:51 AM, Aneesh Kumar K.V wrote:
> Avi Kivity writes:
>
>> Having an annoying bug on i386 kvm I decided to debug it buy running an
>> i386 guest on my x86_64 host, use 9p to access a guest image, and run it
>> using nested kvm.
>>
>> However, 9p appears to be broken: first, the con
Hello list,
i hope it is correct to list the maintainers of kvm. While trying to
install ubuntu 12.04 amd64 on a kvm based vm the KVM process segfaults
while ubuntu tries to detect the HW:
kvm[2978]: segfault at 7fb90d9035e0 ip 7fb90d9035e0
sp7fff652e4ed8 error 15
This does not happe
On 25.07.2012, at 05:49, Bharat Bhushan wrote:
> This patch adds the watchdog emulation in KVM. The watchdog
> emulation is enabled by KVM_ENABLE_CAP(KVM_CAP_PPC_BOOKE_WATCHDOG) ioctl.
> The kernel timer are used for watchdog emulation and emulates
> h/w watchdog state machine. On watchdog timer
From: Dunrong Huang
Add a helper function for fetching max cpus supported by kvm.
Make QEMU exit with an error message if smp_cpus exceeds limit
of VCPU count retrieved by invoking this helper function.
Signed-off-by: Dunrong Huang
---
v1 -> v2:
* Fix indentation(thanks to Stefan Hajnoczi f
Signed-off-by: Nikunj A. Dadhania
---
Documentation/virtual/kvm/msr.txt|4 ++
Documentation/virtual/kvm/paravirt-tlb-flush.txt | 53 ++
2 files changed, 57 insertions(+), 0 deletions(-)
create mode 100644 Documentation/virtual/kvm/paravirt-tlb-flush.txt
Signed-off-by: Nikunj A. Dadhania
---
arch/x86/Kconfig | 11 +++
1 files changed, 11 insertions(+), 0 deletions(-)
diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
index c70684f..354160d 100644
--- a/arch/x86/Kconfig
+++ b/arch/x86/Kconfig
@@ -612,6 +612,17 @@ config PARAVIRT_SPINLOCK
From: Nikunj A. Dadhania
Hypervisor code to indicate guest running/pre-empteded status through
msr. The page is now pinned during MSR write time and use
kmap_atomic/kunmap_atomic to access the shared area vcpu_state area.
Suggested-by: Marcelo Tosatti
Signed-off-by: Nikunj A. Dadhania
---
arc
From: Nikunj A. Dadhania
PV-Flush guest would indicate to flush on enter, flush the TLB before
entering and exiting the guest.
Signed-off-by: Nikunj A. Dadhania
---
arch/x86/kvm/x86.c | 23 +++
1 files changed, 7 insertions(+), 16 deletions(-)
diff --git a/arch/x86/kvm/x
From: Nikunj A. Dadhania
flush_tlb_others_ipi depends on lot of statics in tlb.c. Replicated
the flush_tlb_others_ipi as kvm_flush_tlb_others to further adapt to
paravirtualization.
Use the vcpu state information inside the kvm_flush_tlb_others to
avoid sending ipi to pre-empted vcpus.
* Do no
From: Peter Zijlstra
For normal systems we need a TLB invalidate before freeing the
page-tables, the generic RCU based page-table freeing code lacked
this.
This is because this code originally came from ppc where the hardware
never walks the linux page-tables and thus this invalidate is not
requ
From: Nikunj A. Dadhania
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 host. This will enable guest to intelligently send ipi to running
vcpus and set flag for pre-empted vcpus. This will prevent waiti
From: Peter Zijlstra
Implements optional HAVE_RCU_TABLE_FREE support for x86.
This is useful for things like Xen and KVM where paravirt tlb flush
means the software page table walkers like GUP-fast cannot rely on
IRQs disabling like regular x86 can.
Not for inclusion - is part of PeterZ's "Unif
Remote flushing api's does a busy wait which is fine in bare-metal
scenario. But with-in the guest, the vcpus might have been pre-empted
or blocked. In this scenario, the initator vcpu would end up
busy-waiting for a long amount of time.
This was discovered in our gang scheduling test and other w
2012/7/31 Peter Maydell :
> On 31 July 2012 11:14, wrote:
>>
>> @@ -1256,6 +1274,13 @@ int kvm_init(void)
>> goto err;
>> }
>>
>> +max_vcpus = kvm_max_vcpus(s);
>> +if (smp_cpus > max_vcpus) {
>> +fprintf(stderr, "Number of SMP cpus requested (%d) exceeds max cpus
>
On Mon, Jul 30, 2012 at 7:08 PM, Bernd Schubert
wrote:
> On 07/30/2012 07:33 PM, Bernd Schubert wrote:
>>
>> Hello Stefan,
>>
>> Stefan Hajnoczi gmail.com> writes:
>>>
>>>
>>> On Wed, Jan 11, 2012 at 4:18 PM, Bernd Schubert
>>> itwm.fraunhofer.de> wrote:
On 01/11/2012 05:04 PM, Stefan
On 31 July 2012 11:14, wrote:
>
> @@ -1256,6 +1274,13 @@ int kvm_init(void)
> goto err;
> }
>
> +max_vcpus = kvm_max_vcpus(s);
> +if (smp_cpus > max_vcpus) {
> +fprintf(stderr, "Number of SMP cpus requested (%d) exceeds max cpus "
> +"supported by KVM
From: Dunrong Huang
Add a helper function for fetching max cpus supported by kvm.
Make QEMU exit with an error message if smp_cpus exceeds limit
of VCPU count retrieved by invoking this helper function.
Signed-off-by: Dunrong Huang
---
v1 -> v2:
* Fix indentation
kvm-all.c | 25 +
On 30 July 2012 19:22, wrote:
> +static int kvm_max_vcpus(KVMState *s)
> +{
> +int max_vcpus = 4;
> +int ret;
> +ret = kvm_check_extension(s, KVM_CAP_MAX_VCPUS);
> +if (ret) {
> +max_vcpus = ret;
> +} else {
> + ret = kvm_check_extension(s, KVM_CAP_NR_VCPUS);
> +
On Mon, Jul 30, 2012 at 7:22 PM, wrote:
> From: Dunrong Huang
>
> Add a helper function for fetching max cpus supported by kvm.
>
> Make QEMU exit with an error message if smp_cpus exceeds limit
> of VCPU count retrieved by invoking this helper function.
>
> Signed-off-by: Dunrong Huang
> ---
>
On 07/31/2012 02:36 AM, Marcelo Tosatti wrote:
> On Mon, Jul 30, 2012 at 07:39:31PM +0300, Avi Kivity wrote:
>> On 07/30/2012 05:07 PM, Chris Clayton wrote:
>> >>
>> With kernel 3.5.0 with b2da15ac26a0c00 reverted, I have just had 15
>> clean invocations of vanilla qemu-kvm-1.1.1. So that
On 07/30/2012 09:43 PM, Christoph Hellwig wrote:
On Mon, Jul 30, 2012 at 12:43:12PM +0800, Asias He wrote:
I think we can add REQ_FLUSH & REQ_FUA support to bio path and that
deserves another patch.
Adding it is a requirement for merging the code.
OK. Will add that.
--
Asias
--
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Avi Kivity writes:
> Having an annoying bug on i386 kvm I decided to debug it buy running an
> i386 guest on my x86_64 host, use 9p to access a guest image, and run it
> using nested kvm.
>
> However, 9p appears to be broken: first, the configure test fails (patch
> sent). Second, while mount wo
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