From: Jake Oshins
This patch series exposes the primitives necessary for an interrupt domain
in a module and then introduces a new driver. This driver exposes a root
PCI bus when running in a Hyper-V VM for each device which is passed through
to the VM from the physical host.
This patch series
From: Jake Oshins
The Linux kernel already has the concept of IRQ domain, wherein a component
can expose a set of IRQs which are managed by a particular interrupt controller
chip or other subsystem. The PCI driver exposes the notion of an IRQ domain
for Message-Signaled Interrupts (MSI) from PCI
From: Jake Oshins
This patch exposes the mapping between Linux CPU number and Hyper-V virtual
processor number. This is necessary because the hypervisor needs to know which
virtual processors to target when making a mapping in the Interrupt Redirection
Table in the I/O MMU.
Signed-off-by: Jake
From: Jake Oshins
This patch introduces a driver which exposes a root PCI bus whenever a PCI
Express device is passed through to a Hyper-V VM. The device can be single-
or multi-function. The interrupts for the devices are managed by an IRQ
domain, implemented within this driver.
Signed-off-by
From: Jake Oshins
This patch defines the channel type for a paravirtual PCI front-end within
a Hyper-V VM.
Signed-off-by: Jake Oshins
---
include/linux/hyperv.h | 11 +++
1 file changed, 11 insertions(+)
diff --git a/include/linux/hyperv.h b/include/linux/hyperv.h
index 02393b6..ab173
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On Sat, Aug 01, 2015 at 08:55:09AM -0700, Greg KH wrote:
> On Sat, Aug 01, 2015 at 09:36:19AM -0400, Neil Horman wrote:
> > On Fri, Jul 31, 2015 at 09:41:10PM -0400, Neil Horman wrote:
> > > On Fri, Jul 31, 2015 at 06:56:33PM -0400, Benjamin Romer wrote:
> > > > From: Neil Horman
> > > >
> > > >
From: Denis V. Lunev
Hypervisor Top Level Functional Specification v3.1/4.0 notes that cpuid
(0x4003) EDX's 10th bit should be used to check that Hyper-V guest
crash MSR's functionality available.
This patch should fix this recognition. Currently the code checks EAX
register instead of EDX.
From: Vitaly Kuznetsov
As a prerequisite to exporting cpu_hotplug_enable/cpu_hotplug_disable
functions to modules we need to convert cpu_hotplug_disabled to a counter
to properly support disable -> disable -> enable call sequences. E.g.
after Hyper-V vmbus module (which is supposed to be the firs
From: Nik Nyby
This fixes a typo: base_flag_bumber to base_flag_number
Signed-off-by: Nik Nyby
Signed-off-by: K. Y. Srinivasan
---
drivers/hv/hyperv_vmbus.h |2 +-
1 files changed, 1 insertions(+), 1 deletions(-)
diff --git a/drivers/hv/hyperv_vmbus.h b/drivers/hv/hyperv_vmbus.h
index cd
From: Vitaly Kuznetsov
current_pt_regs() sometimes returns regs of the userspace process and in
case of a kernel crash this is not what we need to report. E.g. when we
trigger crash with sysrq we see the following:
...
RIP: 0010:[] []
sysrq_handle_crash+0x16/0x20
RSP: 0018:8800db0a7d88 E
From: Dexuan Cui
Keep track of CPU affiliations of sub-channels within the scope of the primary
channel. This will allow us to better distribute the load amongst available
CPUs.
Signed-off-by: Dexuan Cui
Signed-off-by: K. Y. Srinivasan
---
drivers/hv/channel_mgmt.c | 20 ++--
From: Vitaly Kuznetsov
struct hv_start_fcopy is too big to be on stack on i386, the following
warning is reported:
>> drivers/hv/hv_fcopy.c:159:1: warning: the frame size of 1088 bytes is larger
>> than 1024 bytes [-Wframe-larger-than=]
Reported-by: kbuild test robot
Signed-off-by: Vitaly Kuz
From: Christopher Oo
Fixes a bug where previously hv_ringbuffer_read would pass in the old
number of bytes available to read instead of the expected old read index
when calculating when to signal to the host that the ringbuffer is empty.
Since the previous write size is already saved, also change
From: Vitaly Kuznetsov
When general-purpose kexec (not kdump) is being performed in Hyper-V guest
the newly booted kernel fails with an MCE error coming from the host. It
is the same error which was fixed in the "Drivers: hv: vmbus: Implement
the protocol for tearing down vmbus state" commit - mo
From: Vitaly Kuznetsov
kzalloc() return value check was accidentally lost in 11bc3a5fa91f:
"Drivers: hv: kvp: convert to hv_utils_transport" commit.
We don't need to reset kvp_transaction.state here as we have the
kvp_timeout_func() timeout function and in case we're in OOM situation
it is prefe
The current Hyper-V clock source is based on the per-partition reference counter
and this counter is being accessed via s synthetic MSR -
HV_X64_MSR_TIME_REF_COUNT.
Hyper-V has a more efficient way of computing the per-partition reference
counter value that does not involve reading a synthetic MSR
From: Dan Carpenter
We don't catch this allocation failure because there is a typo and we
check the wrong variable.
Fixes: 14b50f80c32d ('Drivers: hv: util: introduce hv_utils_transport
abstraction')
Signed-off-by: Dan Carpenter
Reviewed-by: Vitaly Kuznetsov
Signed-off-by: K. Y. Srinivasan
From: Dexuan Cui
The 4 sysfs files should be stable ABIs to the user space.
Signed-off-by: Dexuan Cui
Signed-off-by: K. Y. Srinivasan
---
Documentation/ABI/stable/sysfs-bus-vmbus | 29 +
MAINTAINERS |1 +
2 files changed, 30 inser
From: Vitaly Kuznetsov
Pre-Win2012R2 hosts don't properly handle CHANNELMSG_UNLOAD and
wait_for_completion() hangs. Avoid sending such request on old hosts.
Signed-off-by: Vitaly Kuznetsov
Signed-off-by: K. Y. Srinivasan
---
drivers/hv/channel_mgmt.c |4
1 files changed, 4 insertions
From: Dexuan Cui
This is useful to analyze performance issue.
Signed-off-by: Dexuan Cui
Signed-off-by: K. Y. Srinivasan
---
drivers/hv/vmbus_drv.c | 38 ++
1 files changed, 38 insertions(+), 0 deletions(-)
diff --git a/drivers/hv/vmbus_drv.c b/drivers/hv
From: Vitaly Kuznetsov
If some piece of code wants to check kexec_in_progress it has to be put
in #ifdef CONFIG_KEXEC block to not break the build in !CONFIG_KEXEC
case. Overcome this limitation by defining kexec_in_progress to false.
Signed-off-by: Vitaly Kuznetsov
Signed-off-by: K. Y. Sriniva
From: Vitaly Kuznetsov
We already have hv_synic_free() which frees all per-cpu pages for all
CPUs, let's remove the hv_synic_free_cpu() call from hv_synic_cleanup()
so it will be possible to do separate cleanup (writing to MSRs) and final
freeing. This is going to be used to assist kexec.
Signed
From: ja...@microsoft.com
This patch deletes the logic from hyperv_fb which picked a range of MMIO space
for the frame buffer and adds new logic to hv_vmbus which picks ranges for
child drivers. The new logic isn't quite the same as the old, as it considers
more possible ranges.
Signed-off-by:
From: Vitaly Kuznetsov
At the very late stage of kexec a driver (which are not being unloaded) can
try to post a message or signal an event. This will crash the kernel as we
already did hv_cleanup() and the hypercall page is NULL.
Move all common (between 32 and 64 bit code) declarations to the
From: Vitaly Kuznetsov
Commit e513229b4c38 ("Drivers: hv: vmbus: prevent cpu offlining on newer
hypervisors") was altering smp_ops.cpu_disable to prevent CPU offlining.
We can bo better by using cpu_hotplug_enable/disable functions instead of
such hard-coding.
Reported-by: Radim Kr.má
Signed-o
From: Vitaly Kuznetsov
Hyper-V module needs to disable cpu hotplug (offlining) as there is no
support from hypervisor side to reassign already opened event channels
to a different CPU. Currently it is been done by altering
smp_ops.cpu_disable but it is hackish.
Signed-off-by: Vitaly Kuznetsov
R
From: Viresh Kumar
Migrate hv driver to the new 'set-state' interface provided by
clockevents core, the earlier 'set-mode' interface is marked obsolete
now.
This also enables us to implement callbacks for new states of clockevent
devices, for example: ONESHOT_STOPPED.
Cc: "K. Y. Srinivasan"
Cc
From: Dexuan Cui
By default lsvmbus lists all the devices in the VMBus.
With -v or -vv, more information is printed, including the VMBus
Rel_ID, class ID, device ID and which channel is bound to which
virtual processor, etc.
Signed-off-by: Dexuan Cui
Signed-off-by: K. Y. Srinivasan
---
tools/
The current code tracks the assigned CPUs within a NUMA node in the context of
the primary channel. So, if we have a VM with a single NUMA node with 8 VCPUs,
we may
end up unevenly distributing the channel load. Fix the issue by tracking
affiliations
globally.
Signed-off-by: K. Y. Srinivasan
--
From: ja...@microsoft.com
This patch changes the logic in hv_vmbus to record all of the ranges in the
VM's firmware (BIOS or UEFI) that offer regions of memory-mapped I/O space for
use by paravirtual front-end drivers. The old logic just found one range
above 4GB and called it good. This logic
We cycle through all the "high performance" channels to distribute
load across the available CPUs. Process the NetworkDirect as a
high performance device.
Signed-off-by: K. Y. Srinivasan
---
drivers/hv/channel_mgmt.c |1 +
1 files changed, 1 insertions(+), 0 deletions(-)
diff --git a/driver
From: Alex Ng
Support Win10 protocol for Dynamic Memory. Thia patch allows guests on Win10
hosts
to hot-add memory even when dynamic memory is not enabled on the guest.
Signed-off-by: Alex Ng
Signed-off-by: K. Y. Srinivasan
---
drivers/hv/hv_balloon.c | 26 --
1 fil
The guest may have to send a completion packet back to the host.
To support this usage, permit sending a packet without a payload -
we would be only sending the descriptor in this case.
Signed-off-by: K. Y. Srinivasan
---
drivers/hv/channel.c |4 +++-
1 files changed, 3 insertions(+), 1 dele
From: Vitaly Kuznetsov
Full kernel hang is observed when kdump kernel starts after a crash. This
hang happens in vmbus_negotiate_version() function on
wait_for_completion() as Hyper-V host (Win2012R2 in my testing) never
responds to CHANNELMSG_INITIATE_CONTACT as it thinks the connection is
alrea
Miscellaneous fixes/improvements. The patches that were sent over the last
couple of months have been consolidated in this submission. All review
comments have been addressed.
Alex Ng (1):
Drivers: hv: balloon: Enable dynamic memory protocol negotiation with
Windows 10 hosts
Christopher Oo
It seems that GE does some extra FPGA trickery for VME. Could it be that you
need vmivme7805 driver?
> On 01 Aug 2015, at 01:28, Eisch, Jonathan D [PHYSA]
> wrote:
>
> Hello DriverDev,
>
> I recently installed the latest Debian with Kernel 3.16 including all the vme
> drivers (and vme_user i
> -Original Message-
> From: Greg KH [mailto:gre...@linuxfoundation.org]
> Sent: Saturday, August 1, 2015 11:36 AM
> To: KY Srinivasan
> Cc: linux-ker...@vger.kernel.org; de...@linuxdriverproject.org;
> o...@aepfle.de; a...@canonical.com; vkuzn...@redhat.com;
> jasow...@redhat.com
> Subj
On Sat, Aug 01, 2015 at 12:46:10PM -0700, K. Y. Srinivasan wrote:
>
> Greg, over the last two months we have sent numerous Hyper-V patches and
> these are yet to be comitted (all review comments have been addressed
> for these patches). Please let me know if I should resend these patches.
They a
Greg, over the last two months we have sent numerous Hyper-V patches and
these are yet to be comitted (all review comments have been addressed
for these patches). Please let me know if I should resend these patches.
Regards,
K. Y
___
devel mailing li
The threading is messed up. If you are only going to resend one patch
then you have to use the --in-reply-to option.
regards,
dan carpenter
___
devel mailing list
de...@linuxdriverproject.org
http://driverdev.linuxdriverproject.org/mailman/listinfo/dri
On Sat, Aug 01, 2015 at 10:25:26AM +0530, Sudip Mukherjee wrote:
> On Fri, Jul 31, 2015 at 01:52:13PM -0700, Greg Kroah-Hartman wrote:
> > On Fri, Jul 31, 2015 at 11:08:47AM +0530, Shraddha Barke wrote:
> > > This patch fixes the following checkpatch.pl warning:
> > >
> > > WARNING: do not add new
On Sat, Aug 01, 2015 at 09:36:19AM -0400, Neil Horman wrote:
> On Fri, Jul 31, 2015 at 09:41:10PM -0400, Neil Horman wrote:
> > On Fri, Jul 31, 2015 at 06:56:33PM -0400, Benjamin Romer wrote:
> > > From: Neil Horman
> > >
> > > Switch the visornic over to use napi. Currently there is a kernel
>
Including access_ok.h causes the ia64:allmodconfig build (and maybe others)
to fail with
include/linux/unaligned/le_struct.h:6:19: error:
redefinition of 'get_unaligned_le16'
include/linux/unaligned/access_ok.h:7:19: note:
previous definition of 'get_unaligned_le16' was here
includ
On Fri, Jul 31, 2015 at 09:41:10PM -0400, Neil Horman wrote:
> On Fri, Jul 31, 2015 at 06:56:33PM -0400, Benjamin Romer wrote:
> > From: Neil Horman
> >
> > Switch the visornic over to use napi. Currently there is a kernel
> > thread
> > that sits and waits on a wait queue to get notified of inc
On Sat, Aug 01, 2015 at 01:04:48PM +0200, Christian Gromm wrote:
> On Fri, 31 Jul 2015 17:14:32 +0530
> Sudip Mukherjee wrote:
>
> > On Thu, Jul 30, 2015 at 06:19:41PM +0200, Christian Gromm wrote:
> > > This patch replaces pr_*() functions with dev_*().
> > >
> > > Reported-by: Greg Kroah-Hartm
On Fri, 31 Jul 2015 17:14:32 +0530
Sudip Mukherjee wrote:
> On Thu, Jul 30, 2015 at 06:19:41PM +0200, Christian Gromm wrote:
> > This patch replaces pr_*() functions with dev_*().
> >
> > Reported-by: Greg Kroah-Hartman
> > Signed-off-by: Christian Gromm
> > ---
>
> > + dev_notice(d
On Fri, 31 Jul 2015 22:18:17 +0200
Michael Hornung wrote:
> * Fix sparse warning "Using plain integer as NULL pointer"
>
> Signed-off-by: Michael Hornung
Acked-by: Christian Gromm
> ---
> drivers/staging/most/aim-network/networking.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
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