On 2013-02-12 20:13, Nakajima, Jun wrote:
> On Mon, Feb 11, 2013 at 5:27 AM, Nadav Har'El
> wrote:
>> Hi,
>>
>> On Mon, Feb 11, 2013, Jan Kiszka wrote about "Re: [Bug 53611] New: nVMX: Add
>> nested EPT":
>>> On 2013-02-11 13:49, bugzilla-dae...@bugzilla.kernel.org wrote:
https://bugzilla.k
With -next-20130204+ in ubuntu 12.10 VM (so the 80x25 VGA
device/console):
[0.666410] udevd[97]: starting version 175
[0.674043] udevd[97]: udevd:[97]: segfault at ff5fd020 ip
7fff069e277f sp 7fff068c9ef8 error d
and boots to an initramfs prompt.
git bisect (log attached
On 02/12/2013 04:26 PM, Peter Hurley wrote:
> With -next-20130204+ in ubuntu 12.10 VM (so the 80x25 VGA
> device/console):
>
> [0.666410] udevd[97]: starting version 175
> [0.674043] udevd[97]: udevd:[97]: segfault at ff5fd020 ip
> 7fff069e277f sp 7fff068c9ef8 error d
>
>
On Tue, Feb 12, 2013 at 04:21:13PM -0800, H. Peter Anvin wrote:
> On 02/12/2013 04:16 PM, Borislav Petkov wrote:
> >
> >This family check is redundant, we're already in a 0x10 if-branch
> >above. Boris had sent a second version which doesn't have that check:
> >http://marc.info/?l=linux-kernel&m=13
Am 01.02.2013 08:39, schrieb Jason Wang:
> diff --git a/net/net.c b/net/net.c
> index 98a1934..9806862 100644
> --- a/net/net.c
> +++ b/net/net.c
[...]
> @@ -271,9 +287,7 @@ static void qemu_cleanup_net_client(NetClientState *nc)
> {
> QTAILQ_REMOVE(&net_clients, nc, next);
>
> -if (nc-
On 01.02.2013, at 08:39, Jason Wang wrote:
> This patch adds basic multiqueue support for qemu. The idea is simple, an
> array
> of NetClientStates were introduced in NICState, parse_netdev() were extended
> to
> find and match all NetClientStates belongs to the backend and place their
> pointe
On Tue, Feb 12, 2013 at 09:08:27PM +0100, Paolo Bonzini wrote:
> Il 12/02/2013 19:23, Michael S. Tsirkin ha scritto:
> > On Tue, Feb 12, 2013 at 07:04:27PM +0100, Paolo Bonzini wrote:
> Perhaps, but 3 or 4 arguments (in/out/nsg or in/out/nsg_in/nsg_out) just
> for this are definitely too
Il 12/02/2013 19:23, Michael S. Tsirkin ha scritto:
> On Tue, Feb 12, 2013 at 07:04:27PM +0100, Paolo Bonzini wrote:
Perhaps, but 3 or 4 arguments (in/out/nsg or in/out/nsg_in/nsg_out) just
for this are definitely too many and make the API harder to use.
You have to find a balan
On Mon, Feb 11, 2013 at 5:27 AM, Nadav Har'El wrote:
> Hi,
>
> On Mon, Feb 11, 2013, Jan Kiszka wrote about "Re: [Bug 53611] New: nVMX: Add
> nested EPT":
>> On 2013-02-11 13:49, bugzilla-dae...@bugzilla.kernel.org wrote:
>> > https://bugzilla.kernel.org/show_bug.cgi?id=53611
>> >Summ
On Tue, Feb 12, 2013 at 07:04:27PM +0100, Paolo Bonzini wrote:
> >> Perhaps, but 3 or 4 arguments (in/out/nsg or in/out/nsg_in/nsg_out) just
> >> for this are definitely too many and make the API harder to use.
> >>
> >> You have to find a balance. Having actually used the API, the
> >> possibilit
Il 12/02/2013 18:34, Michael S. Tsirkin ha scritto:
> On Tue, Feb 12, 2013 at 05:57:55PM +0100, Paolo Bonzini wrote:
>> Il 12/02/2013 17:35, Michael S. Tsirkin ha scritto:
>>> On Tue, Feb 12, 2013 at 05:17:47PM +0100, Paolo Bonzini wrote:
Il 12/02/2013 17:13, Michael S. Tsirkin ha scritto:
>>>
virtio device drivers translate requests from higher layer in two steps:
a device-specific step in the device driver, and generic preparation
of virtio direct or indirect buffers in virtqueue_add_buf. Because
virtqueue_add_buf also accepts the outcome of the first step as a single
struct scatterli
On Tue, Feb 12, 2013 at 05:57:55PM +0100, Paolo Bonzini wrote:
> Il 12/02/2013 17:35, Michael S. Tsirkin ha scritto:
> > On Tue, Feb 12, 2013 at 05:17:47PM +0100, Paolo Bonzini wrote:
> >> Il 12/02/2013 17:13, Michael S. Tsirkin ha scritto:
> > + * @nsg: the number of sg lists that will be
Il 12/02/2013 17:35, Michael S. Tsirkin ha scritto:
> On Tue, Feb 12, 2013 at 05:17:47PM +0100, Paolo Bonzini wrote:
>> Il 12/02/2013 17:13, Michael S. Tsirkin ha scritto:
> + * @nsg: the number of sg lists that will be added
>>> This means number of calls to add_sg ? Not sure why this
On Tue, Feb 12, 2013 at 05:17:47PM +0100, Paolo Bonzini wrote:
> Il 12/02/2013 17:13, Michael S. Tsirkin ha scritto:
> >>> + * @nsg: the number of sg lists that will be added
> > This means number of calls to add_sg ? Not sure why this matters.
> > How about we pass in in_num/out_num -
Il 12/02/2013 17:13, Michael S. Tsirkin ha scritto:
>>> + * @nsg: the number of sg lists that will be added
> This means number of calls to add_sg ? Not sure why this matters.
> How about we pass in in_num/out_num - that is total # of sg,
> same as add_buf?
It is used to c
On Tue, Feb 12, 2013 at 04:48:39PM +0100, Paolo Bonzini wrote:
> Il 12/02/2013 16:43, Michael S. Tsirkin ha scritto:
> > On Tue, Feb 12, 2013 at 04:32:27PM +0100, Paolo Bonzini wrote:
> >> Il 12/02/2013 15:56, Michael S. Tsirkin ha scritto:
> > +/**
> > + * virtqueue_start_buf - start build
Il 12/02/2013 16:43, Michael S. Tsirkin ha scritto:
> On Tue, Feb 12, 2013 at 04:32:27PM +0100, Paolo Bonzini wrote:
>> Il 12/02/2013 15:56, Michael S. Tsirkin ha scritto:
> +/**
> + * virtqueue_start_buf - start building buffer for the other end
> + * @vq: the struct virtqueue we're ta
On Tue, Feb 12, 2013 at 04:32:27PM +0100, Paolo Bonzini wrote:
> Il 12/02/2013 15:56, Michael S. Tsirkin ha scritto:
> >> > +/**
> >> > + * virtqueue_start_buf - start building buffer for the other end
> >> > + * @vq: the struct virtqueue we're talking about.
> >> > + * @data: the token identifying
Il 12/02/2013 15:56, Michael S. Tsirkin ha scritto:
>> > +/**
>> > + * virtqueue_start_buf - start building buffer for the other end
>> > + * @vq: the struct virtqueue we're talking about.
>> > + * @data: the token identifying the buffer.
>> > + * @nents: the number of buffers that will be added
>
On Tue, Feb 12, 2013 at 01:23:27PM +0100, Paolo Bonzini wrote:
> virtio device drivers translate requests from higher layer in two steps:
> a device-specific step in the device driver, and generic preparation
> of virtio direct or indirect buffers in virtqueue_add_buf. Because
> virtqueue_add_buf
Juan Quintela wrote:
> Hi
>
> Please send in any agenda topics you are interested in.
As there is no topics, call gets canceled.
Happy hacking, Juan.
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On Mon, Feb 11, 2013 at 02:52:49AM +0100, Igor Mammedov wrote:
> On Fri, 8 Feb 2013 16:13:02 -0200
> Eduardo Habkost wrote:
>
> > On Fri, Feb 08, 2013 at 05:54:50PM +0100, Andreas Färber wrote:
> > > Am 08.02.2013 15:52, schrieb Eduardo Habkost:
> > > > On Fri, Feb 08, 2013 at 01:58:42PM +0100, I
Hi,
We currently run Openstack Essex hosts with KVM-1.0 (Ubuntu 12.04)
instances with qcow2,virtio,cache=none
For Linux VMs, no trouble at all but we do observe filesystem corruption
and inconsistency (missing DLLs, CHKDSK asked by EventViewer, failure at
reboot) with some of our Windows 200
This series implements virtio-scsi queue steering, which gives
performance improvements of up to 50% (measured both with QEMU and
tcm_vhost backends). The patches build on top of the new virtio APIs
at http://permalink.gmane.org/gmane.linux.kernel.virtualization/18431;
the new API simplifies the l
virtio_scsi_target_state is now empty, but we will find new uses
for it in the next few patches. However, dropping the sglist lets
us turn the array-of-pointers into a simple array, which simplifies
the allocation.
However, we do not leave the virtio_scsi_target_state structs in the
flexible arra
From: Wanlong Gao
Add hot cpu notifier to reset the request virtqueue affinity
when doing cpu hotplug.
Cc: linux-s...@vger.kernel.org
Signed-off-by: Wanlong Gao
[ The version that doesn't get/put_online_cpus is now called
__virtscsi_set_affinity - Paolo ]
Signed-off-by: Paolo Bonzini
---
dr
This patch adds queue steering to virtio-scsi. When a target is sent
multiple requests, we always drive them to the same queue so that FIFO
processing order is kept. However, if a target was idle, we can choose
a queue arbitrarily. In this case the queue is chosen according to the
current VCPU,
Avoid duplicated code in all of the callers.
Cc: linux-s...@vger.kernel.org
Signed-off-by: Paolo Bonzini
---
drivers/scsi/virtio_scsi.c | 22 +-
1 files changed, 9 insertions(+), 13 deletions(-)
diff --git a/drivers/scsi/virtio_scsi.c b/drivers/scsi/virtio_scsi.c
index 3dd
This will be needed soon in order to retrieve the per-target
struct.
Cc: linux-s...@vger.kernel.org
Signed-off-by: Paolo Bonzini
---
drivers/scsi/virtio_scsi.c | 17 +
1 files changed, 9 insertions(+), 8 deletions(-)
diff --git a/drivers/scsi/virtio_scsi.c b/drivers/scsi/virti
On Tue, Feb 12, 2013 at 02:33:17PM +0200, Gleb Natapov wrote:
> On Mon, Feb 11, 2013 at 09:50:09PM -0200, Marcelo Tosatti wrote:
> >
> > Such messages in the system log very often cause confusion because users
> > understand the "kvm: unhandled MSR" messages as errors.
> >
> They are errors. Linu
On Mon, Feb 11, 2013 at 09:50:09PM -0200, Marcelo Tosatti wrote:
>
> Such messages in the system log very often cause confusion because users
> understand the "kvm: unhandled MSR" messages as errors.
>
They are errors. Linux compiled with PV support ignores them, but other
guest OSes or Linux wit
Right now, both virtblk_add_req and virtblk_add_req_wait call
virtqueue_add_buf. To prepare for the next patches, abstract the call
to virtqueue_add_buf into a new function __virtblk_add_req, and include
the waiting logic directly in virtblk_add_req.
Signed-off-by: Paolo Bonzini
---
drivers/blo
This is useful in places that recycle the same scatterlist multiple
times, and do not want to incur the cost of sg_init_table every
time in hot paths.
Acked-by: Jens Axboe
Signed-off-by: Paolo Bonzini
---
block/blk-integrity.c |2 +-
block/blk-merge.c |2 +-
include/linu
Prepare for when virtqueue_add_buf will use sg_next instead of
ignoring ending markers.
Note that for_each_sg (and thus virtqueue_add_sg) allows you
to pass a "truncated" scatterlist that does not have a marker
on the last item. We rely on this in add_recvbuf_mergeable.
Signed-off-by: Paolo Bonz
Move the creation of the request header and response footer to
__virtblk_add_req. vbr->sg only contains the data scatterlist,
the header/footer are added separately using the new piecewise
API for building virtqueue buffers.
With this change, virtio-blk (with use_bio) is not relying anymore on
th
This is similar to the previous patch, but a bit more radical
because the bio and req paths now share the buffer construction
code. Because the req path doesn't use vbr->sg, however, we
need to add a couple of arguments to __virtblk_add_req.
We also need to teach __virtblk_add_req how to build SC
virtio device drivers translate requests from higher layer in two steps:
a device-specific step in the device driver, and generic preparation
of virtio direct or indirect buffers in virtqueue_add_buf. Because
virtqueue_add_buf also accepts the outcome of the first step as a single
struct scatterli
Eliminate the code duplication between virtqueue_add_buf and
virtqueue_add_sg. That's safe to do now that no devices will
pass scatterlists with a termination marker in the middle.
Signed-off-by: Paolo Bonzini
---
drivers/virtio/virtio_ring.c | 159 +++---
1
Adding a single direct buffer is a very common case. Introduce
an optimized function for that.
Signed-off-by: Paolo Bonzini
---
drivers/char/hw_random/virtio-rng.c |2 +-
drivers/char/virtio_console.c |4 +-
drivers/net/virtio_net.c|2 +-
drivers/rpmsg/virtio_rpmsg
Using the new virtio_scsi_add_sg function lets us simplify the queueing
path. In particular, all data protected by the tgt_lock is just gone
(multiqueue will find a new use for the lock).
The speedup is relatively small (2-4%) but it is worthwhile because of
the code simplification it enables. A
Most device drivers do not need to perform any postprocessing on the
scatterlists they receive from higher-level drivers (e.g. the block
or SCSI layer), because they translate the request metadata directly
from the various C structs into the data that is required by the device.
virtio devices howe
If userspace wants to change some specific bits of TSR
(timer status register) then it uses GET/SET_SREGS ioctl interface.
So the steps will be:
i) user-space will make get ioctl,
ii) change TSR in userspace
iii) then make set ioctl.
It can happen that TSR gets changed by kerne
This is done so that same function can be called from SREGS and
ONE_REG interface (follow up patch).
Signed-off-by: Bharat Bhushan
---
v2:
No Change
arch/powerpc/kvm/booke.c | 24 ++--
arch/powerpc/kvm/booke.h |1 +
2 files changed, 15 insertions(+), 10 deletions(-)
This patchset adds the one_reg interface to get/set TSR and TCR registers.
This patchet also adds the one_reg interface to or/clear specific bits in TSR
register.
v2:
-- Added Documentation
Bharat Bhushan (2):
move tsr update in a seprate function
Added one_reg interface for timer registers
Hi,
We (a cloud hosting provider) has recently observed a couple of
strange lockups when physical node runs significant amount of
Win2008R2 kvm appliances, one may see collection of those lockups at
the link below. After checking a lot of ideas without any valuable
result, I have suggested that ne
https://bugzilla.kernel.org/show_bug.cgi?id=53711
Nadav Har'El changed:
What|Removed |Added
Blocks||53601
--
Configure bugmail: https://b
https://bugzilla.kernel.org/show_bug.cgi?id=53601
Nadav Har'El changed:
What|Removed |Added
Depends on||53711
--
Configure bugmail: https://b
https://bugzilla.kernel.org/show_bug.cgi?id=53711
Summary: nVMX: potential bug with IDT_VECTORING_INFO if
!PIN_BASED_EXT_INTR_MASK
Product: Virtualization
Version: unspecified
Platform: All
OS/Version: Linux
Tree:
https://bugzilla.kernel.org/show_bug.cgi?id=53701
Nadav Har'El changed:
What|Removed |Added
Blocks||53601
--
Configure bugmail: https://b
https://bugzilla.kernel.org/show_bug.cgi?id=53601
Nadav Har'El changed:
What|Removed |Added
Depends on||53701
--
Configure bugmail: https://b
https://bugzilla.kernel.org/show_bug.cgi?id=53701
Summary: nVMX: Unchecked setting of cr4 for nested guest
Product: Virtualization
Version: unspecified
Platform: All
OS/Version: Linux
Tree: Mainline
Status: NEW
https://bugzilla.kernel.org/show_bug.cgi?id=53601
Nadav Har'El changed:
What|Removed |Added
Depends on||53691
--
Configure bugmail: https://b
https://bugzilla.kernel.org/show_bug.cgi?id=53691
Nadav Har'El changed:
What|Removed |Added
Blocks||53601
--
Configure bugmail: https://b
https://bugzilla.kernel.org/show_bug.cgi?id=53691
Summary: nVMX: Bug when L1 is swapped out
Product: Virtualization
Version: unspecified
Platform: All
OS/Version: Linux
Tree: Mainline
Status: NEW
Severity: norma
https://bugzilla.kernel.org/show_bug.cgi?id=53681
Nadav Har'El changed:
What|Removed |Added
Blocks||53601
--
Configure bugmail: https://b
https://bugzilla.kernel.org/show_bug.cgi?id=53601
Nadav Har'El changed:
What|Removed |Added
Depends on||53681
--
Configure bugmail: https://b
https://bugzilla.kernel.org/show_bug.cgi?id=53681
Summary: nVMX: Rare crash on shadow-on-shadow case
Product: Virtualization
Version: unspecified
Platform: All
OS/Version: Linux
Tree: Mainline
Status: NEW
Severi
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