04 Nov, 2015
1 commit
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Moved Hyper-V synic contants from guest Hyper-V drivers private
header into x86 arch uapi Hyper-V header.Added Hyper-V synic msr's flags into x86 arch uapi Hyper-V header.
Signed-off-by: Andrey Smetanin
Reviewed-by: Roman Kagan
Signed-off-by: Denis V. Lunev
CC: Vitaly Kuznetsov
CC: "K. Y. Srinivasan"
CC: Gleb Natapov
CC: Paolo Bonzini
Signed-off-by: Paolo Bonzini
06 Aug, 2015
4 commits
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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
Signed-off-by: Greg Kroah-Hartman -
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
Signed-off-by: Greg Kroah-Hartman -
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: Jake Oshins
Signed-off-by: K. Y. Srinivasan
Signed-off-by: Greg Kroah-Hartman -
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 will find any ranges above 1MB.It would have been possible with this patch to just use existing resource
allocation functions, rather than keep track of the entire set of Hyper-V
related MMIO regions in VMBus. This strategy, however, is not sufficient
when the resource allocator needs to be aware of the constraints of a
Hyper-V virtual machine, which is what happens in the next patch in the series.
So this first patch exists to show the first steps in reworking the MMIO
allocation paths for Hyper-V front-end drivers.Signed-off-by: Jake Oshins
Signed-off-by: K. Y. Srinivasan
Signed-off-by: Greg Kroah-Hartman
01 Jun, 2015
2 commits
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Channels/sub-channels can be affinitized to VCPUs in the guest. Implement
this affinity in a way that is NUMA aware. The current protocol distributed
the primary channels uniformly across all available CPUs. The new protocol
is NUMA aware: primary channels are distributed across the available NUMA
nodes while the sub-channels within a primary channel are distributed amongst
CPUs within the NUMA node assigned to the primary channel.Signed-off-by: K. Y. Srinivasan
Signed-off-by: Greg Kroah-Hartman -
Add support for Windows 10.
Signed-off-by: Keith Mange
Signed-off-by: K. Y. Srinivasan
Signed-off-by: Greg Kroah-Hartman
25 May, 2015
4 commits
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next_oc and num_sc fields of struct vmbus_channel deserve a description. Move
them closer to sc_list as these fields are related to it.Signed-off-by: Vitaly Kuznetsov
Signed-off-by: K. Y. Srinivasan
Signed-off-by: Greg Kroah-Hartman -
Implement the protocol for tearing down the monitor state established with
the host.Signed-off-by: K. Y. Srinivasan
Tested-by: Vitaly Kuznetsov
Signed-off-by: Greg Kroah-Hartman -
Get rid of some unused definitions.
Signed-off-by: K. Y. Srinivasan
Signed-off-by: Greg Kroah-Hartman -
These declarations are internal to hv_util module and hv_fcopy_* declarations
already reside there.Signed-off-by: Vitaly Kuznetsov
Tested-by: Alex Ng
Signed-off-by: K. Y. Srinivasan
Signed-off-by: Greg Kroah-Hartman
03 Apr, 2015
1 commit
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It's not necessary any longer, since we can safely run the blocking
message handlers in vmbus_connection.work_queue now.Signed-off-by: Dexuan Cui
Cc: K. Y. Srinivasan
Signed-off-by: K. Y. Srinivasan
Signed-off-by: Greg Kroah-Hartman
02 Mar, 2015
6 commits
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Implement an API that gives additional control on the what VMBUS flags will be
set as well as if the host needs to be signalled. This API will be
useful for clients that want to batch up requests to the host.Signed-off-by: K. Y. Srinivasan
Signed-off-by: Greg Kroah-Hartman -
Implement an API for sending pagebuffers that gives more control to the client
in terms of setting the vmbus flags as well as deciding when to
notify the host. This will be useful for enabling batch processing.Signed-off-by: K. Y. Srinivasan
Signed-off-by: Greg Kroah-Hartman -
The current algorithm for picking an outgoing channel was not distributing
the load well. Implement a simple round-robin scheme to ensure good
distribution of the outgoing traffic.Signed-off-by: K. Y. Srinivasan
Reviewed-by: Long Li
Signed-off-by: Greg Kroah-Hartman -
In response to a rescind message, we need to remove the channel and the
corresponding device. Cleanup this code path by factoring out the code
to remove a channel.Signed-off-by: K. Y. Srinivasan
Signed-off-by: Greg Kroah-Hartman -
NetworkDirect is a service that supports guest RDMA.
Define the GUID for this service.Signed-off-by: K. Y. Srinivasan
Signed-off-by: Greg Kroah-Hartman -
All channel work queues are named 'hv_vmbus_ctl', this makes them
indistinguishable in ps output and makes it hard to link to the corresponding
vmbus device. Rename them to hv_vmbus_ctl/N and make vmbus device names match,
e.g. now vmbus_1 device is served by hv_vmbus_ctl/1 work queue.Signed-off-by: Vitaly Kuznetsov
Signed-off-by: K. Y. Srinivasan
Signed-off-by: Greg Kroah-Hartman
26 Jan, 2015
2 commits
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sc_lock spinlock in struct vmbus_channel is being used to not only protect the
sc_list field, e.g. vmbus_open() function uses it to implement test-and-set
access to the state field. Rename it to the more generic 'lock' and add the
description.Signed-off-by: Vitaly Kuznetsov
Signed-off-by: K. Y. Srinivasan
Acked-by: Jason Wang
Signed-off-by: Greg Kroah-Hartman -
Currently, the API for sending a multi-page buffer over VMBUS is limited to
a maximum pfn array of MAX_MULTIPAGE_BUFFER_COUNT. This limitation is
not imposed by the host and unnecessarily limits the maximum payload
that can be sent. Implement an API that does not have this restriction.Signed-off-by: K. Y. Srinivasan
Signed-off-by: Greg Kroah-Hartman
09 Dec, 2014
1 commit
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This patch adds proper handling of the vNIC hot removal event, which includes
a rescind-channel-offer message from the host side that triggers vNIC close and
removal. In this case, the notices to the host during close and removal is not
necessary because the channel is rescinded. This patch blocks these unnecessary
messages, and lets vNIC removal process complete normally.Signed-off-by: Haiyang Zhang
Reviewed-by: K. Y. Srinivasan
Signed-off-by: David S. Miller
04 May, 2014
2 commits
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Currently the mapping of the relID to channel is done under the protection of a
single spin lock. Starting with ws2012, each channel is bound to a specific VCPU
in the guest. Use this binding to eliminate the spin lock by setting up
per-cpu state for mapping relId to the channel.Signed-off-by: K. Y. Srinivasan
Reviewed-by: Haiyang Zhang
Signed-off-by: Greg Kroah-Hartman -
By ensuring that we set the callback handler to NULL in the channel close
path on the same CPU that the channel is bound to, we can eliminate this lock
acquisition and release in a performance critical path.Signed-off-by: K. Y. Srinivasan
Reviewed-by: Haiyang Zhang
Signed-off-by: Greg Kroah-Hartman
17 Apr, 2014
1 commit
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Only ws2012r2 hosts support the ability to reconnect to the host on VMBUS. This functionality
is needed by kexec in Linux. To use this functionality we need to negotiate version 3.0 of the
VMBUS protocol.Signed-off-by: K. Y. Srinivasan
Cc: [3.9+]
Signed-off-by: Greg Kroah-Hartman
09 Mar, 2014
1 commit
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Increase the number of PFNs we can handle in a single vmbus packet.
Some network packets may have more PFNs than the current limit we have.
This is not a bug and this patch can be applied to the *next tree.Signed-off-by: K. Y. Srinivasan
Signed-off-by: Greg Kroah-Hartman
25 Feb, 2014
1 commit
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Use a resource for the hyperv mmio region instead of start/size
variables. Register the region properly so it shows up in
/proc/iomem.Signed-off-by: Gerd Hoffmann
Signed-off-by: K. Y. Srinivasan
Signed-off-by: Greg Kroah-Hartman
19 Feb, 2014
2 commits
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Implement the file copy service for Linux guests on Hyper-V. This permits the
host to copy a file (over VMBUS) into the guest. This facility is part of
"guest integration services" supported on the Windows platform.
Here is a link that provides additional details on this functionality:http://technet.microsoft.com/en-us/library/dn464282.aspx
In V1 version of the patch I have addressed comments from
Olaf Hering and Dan CarpenterIn V2 version of this patch I did some minor cleanup (making some globals
static). In V4 version of the patch I have addressed all of Olaf's
most recent set of comments/concerns.In V5 version of the patch I had addressed Greg's most recent comments.
I would like to thank Greg for suggesting that I use misc device; it has
significantly simplified the code.In V6 version of the patch I have cleaned up error message based on Olaf's
comments. I have also rebased the patch based on the current tip.In this version of the patch, I have addressed the latest comments from Greg.
Signed-off-by: K. Y. Srinivasan
Signed-off-by: Greg Kroah-Hartman -
We need the fixes here for future mei and other patches.
Signed-off-by: Greg Kroah-Hartman
08 Feb, 2014
5 commits
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As we implement Virtual Receive Side Scaling on the networking side
(the VRSS patches are currently under review), it will be useful to have
per-channel state that vmbus drivers can manage. Add support for
managing per-channel state.Signed-off-by: K. Y. Srinivasan
Signed-off-by: Greg Kroah-Hartman -
The current channel code is using scatterlist abstraction to pass data to the
ringbuffer API on the send path. This causes unnecessary translations
between virtual and physical addresses. Fix this.Signed-off-by: K. Y. Srinivasan
Signed-off-by: Greg Kroah-Hartman -
On Gen2 firmware, Hyper-V does not emulate the PCI bus. However, the MMIO
information is packaged up in DSDT. Extract this information and export it
for use by the synthetic framebuffer driver. This is the only driver that
needs this currently.In this version of the patch mmio, I have updated the hyperv header file
(linux/hyperv.h) with mmio definitions.Signed-off-by: K. Y. Srinivasan
Signed-off-by: Greg Kroah-Hartman -
This patch adds the hyperv.h header to the uapi folder, and adds it to the Kbuild file.
Doing this enables compiling userspace Hyper-V tools using the installed headers.Version 2: Split UAPI parts into new header, instead of duplicating.
Signed-off-by: Bjarke Istrup Pedersen
Signed-off-by: Greg Kroah-Hartman -
During the initial VMBUS connect phase, starting with WS2012 R2, we should
specify the VPCU in the guest that should receive the notification. Fix this
issue. This fix is required to properly connect to the host in the kexeced
kernel.Signed-off-by: K. Y. Srinivasan
Cc: [3.9+]
Signed-off-by: Greg Kroah-Hartman
30 Sep, 2013
1 commit
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We need/want the mei fixes in here so we can apply other updates that
are depending on them.Signed-off-by: Greg Kroah-Hartman
27 Sep, 2013
6 commits
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The current code does not correctly negotiate the version numbers for the util
driver when hosted on earlier hosts. The version numbers presented by this
driver were not compatible with the version numbers supported by Windows Server
2008. Fix this problem.I would like to thank Olaf Hering (ohering@suse.com) for identifying the problem.
Reported-by: Olaf Hering
Signed-off-by: K. Y. Srinivasan
Signed-off-by: Greg Kroah-Hartman -
It's no longer needed, and the struct hv_ring_buffer_debug_info
structure shouldn't be "global" so move it to the local .h file instead.Tested-by: "K. Y. Srinivasan"
Cc: Haiyang Zhang
Signed-off-by: Greg Kroah-Hartman -
It's only used once, only contains 2 function calls, so just make those
calls directly, deleting the function, and the now unneeded structure
entirely.Tested-by: "K. Y. Srinivasan"
Cc: Haiyang Zhang
Signed-off-by: Greg Kroah-Hartman -
This moves the "client_monitor_conn_id" and "server_monitor_conn_id" bus
attributes to the dev_groups structure, removing the need for it to be
in a temporary structure.Tested-by: "K. Y. Srinivasan"
Cc: Haiyang Zhang
Signed-off-by: Greg Kroah-Hartman -
This moves the "client_monitor_latency" and "server_monitor_latency" bus
attributes to the dev_groups structure, removing the need for it to be
in a temporary structure.Tested-by: "K. Y. Srinivasan"
Cc: Haiyang Zhang
Signed-off-by: Greg Kroah-Hartman -
This moves the "client_monitor_pending" and "server_monitor_pending" bus
attributes to the dev_groups structure, removing the need for it to be
in a temporary structure.Tested-by: "K. Y. Srinivasan"
Cc: Haiyang Zhang
Signed-off-by: Greg Kroah-Hartman