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commit d5362c37e1f8a40096452fc201c30e705750e687 upstream.
Free driver_override when rpmsg_remove(), otherwise
the following memory leak will occur:
unreferenced object 0xffff0000d55d7080 (size 128):
comm "kworker/u8:2", pid 56, jiffies 4294893188 (age 214.272s)
hex dump (first 32 bytes):
72 70 6d 73 67 5f 6e 73 00 00 00 00 00 00 00 00 rpmsg_ns........
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
backtrace:
[<000000009c94c9c1>] __kmem_cache_alloc_node+0x1f8/0x320
[<000000002300d89b>] __kmalloc_node_track_caller+0x44/0x70
[<00000000228a60c3>] kstrndup+0x4c/0x90
[<0000000077158695>] driver_set_override+0xd0/0x164
[<000000003e9c4ea5>] rpmsg_register_device_override+0x98/0x170
[<000000001c0c89a8>] rpmsg_ns_register_device+0x24/0x30
[<000000008bbf8fa2>] rpmsg_probe+0x2e0/0x3ec
[<00000000e65a68df>] virtio_dev_probe+0x1c0/0x280
[<00000000443331cc>] really_probe+0xbc/0x2dc
[<00000000391064b1>] __driver_probe_device+0x78/0xe0
[<00000000a41c9a5b>] driver_probe_device+0xd8/0x160
[<000000009c3bd5df>] __device_attach_driver+0xb8/0x140
[<0000000043cd7614>] bus_for_each_drv+0x7c/0xd4
[<000000003b929a36>] __device_attach+0x9c/0x19c
[<00000000a94e0ba8>] device_initial_probe+0x14/0x20
[<000000003c999637>] bus_probe_device+0xa0/0xac
Signed-off-by: Xiaolei Wang <xiaolei.wang@windriver.com>
Fixes: b0b03b811963 ("rpmsg: Release rpmsg devices in backends")
Cc: stable@vger.kernel.org
Link: https://lore.kernel.org/r/20231215020049.78750-1-xiaolei.wang@windriver.com
Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit b0f0e6a3be85dfc3ab65041f525f951fd744730f from
git://git.ti.com/ti-linux-kernel/ti-linux-kernel.git
The virtio rpmsg bus framework uses endpoints as the basis for
sending and receiving messages to/from a remote processor. Each
rpmsg bus device will have a primary endpoint if the corresponding
rpmsg bus driver supports a callback, and secondary child endpoints
associated with the same rpmsg bus device. The life-cycle of these
endpoints are tied to the corresponding rpmsg device. A virtio rpmsg
bus device can also have its own endpoint for supporting name service
announcements from a corresponding remote processor to create and
delete rpmsg devices dynamically.
Each endpoint has a callback lock associated with it to provide
protection/mutual exclusion between threads that process incoming
rpmsg messages and threads that want to delete the endpoint. The
virtio rpmsg name service endpoint callback will run while holding
it's ept->cb_lock to create/delete rpmsg devices for RPMSG_NS_CREATE
and RPMSG_NS_DELETE messages respectively. The latter message
processing will destroy the requested channel, and will ultimately
result in all the secondary rpmsg device endpoints also to be
destroyed. The ept->cb_lock for the channel's endpoint is also
locked during its destruction while setting the callback to NULL.
This results in a seemingly nested locking of the ept->cb_lock even
though the locking is on different mutexes. This will result in a
false warning from the lockdep validator when it is enabled because
the lockdep deals with classes and both are the same class, although
they are different instances.
Similar circular dependency scenarios also exist with remoteproc
error recovery and existing rpmsg drivers - rpmsg_rpc and rpmsg_proto.
These issues are fixed by replacing the existing mutex_lock() calls
with the mutex_lock_nested() API variation and using different
subclasses for the NameService end-point and for the rpmsg channel
device end-points.
Following are example warning signatures that get fixed by this patch:
1. Recursive locking dependency during RPMSG_NS_DESTROY message processing
=============================================
WARNING: possible recursive locking detected
Signed-off-by: Xulin Sun <xulin.sun@windriver.com>
---------------------------------------------
kworker/0:0/1069 is trying to acquire lock:
e37914c0 (&ept->cb_lock){+.+.}, at: __rpmsg_destroy_ept+0x40/0x6c [virtio_rpmsg_bus]
but task is already holding lock:
e3d14bc0 (&ept->cb_lock){+.+.}, at: rpmsg_recv_done+0x6c/0x34c [virtio_rpmsg_bus]
other info that might help us debug this:
Possible unsafe locking scenario:
CPU0
----
lock(&ept->cb_lock);
lock(&ept->cb_lock);
*** DEADLOCK ***
May be due to missing lock nesting notatio
4 locks held by kworker/0:0/1069:
#0: e700b6a0 ((wq_completion)events){+.+.}, at: process_one_work+0x1f4/0x824
#1: e2175f24 ((work_completion)(&mq->work)){+.+.}, at: process_one_work+0x1f4/0x824
#2: e3d14bc0 (&ept->cb_lock){+.+.}, at: rpmsg_recv_done+0x6c/0x34c [virtio_rpmsg_bus]
#3: e335e0bc (&dev->mutex){....}, at: device_release_driver_internal+0x18/0x1bc
2. Circular locking dependency during error recovery of rpmsg-rpc driver
======================================================
WARNING: possible circular locking dependency detected
-------------------------------------------------------
kworker/0:4/1068 is trying to acquire lock:
e3e2b2c0 (&ept->cb_lock){+.+.}, at: __rpmsg_destroy_ept+0x40/0x6c [virtio_rpmsg_bus]
but task is already holding lock:
e4282380 (&rppcdev->lock){+.+.}, at: rppc_remove+0x88/0x238 [rpmsg_rpc]
which lock already depends on the new lock.
other info that might help us debug this:
Chain exists of:
&ept->cb_lock --> rppc_devices_lock --> &rppcdev->lock
Possible unsafe locking scenario:
CPU0 CPU1
---- ----
lock(&rppcdev->lock);
lock(rppc_devices_lock);
lock(&rppcdev->lock);
lock(&ept->cb_lock);
*** DEADLOCK ***
7 locks held by kworker/0:4/1068:
#0: e700b6a0 ((wq_completion)events){+.+.}, at: process_one_work+0x1f4/0x824
#1: e2289f24 ((work_completion)(&rproc->crash_handler)){+.+.}, at: process_one_work+0x1f4/0x824
#2: e47ebb1c (&rproc->lock){+.+.}, at: rproc_trigger_recovery+0x44/0x460
#3: e3e064e4 (&dev->mutex){....}, at: device_release_driver_internal+0x18/0x1bc
#4: e37bd4bc (&dev->mutex){....}, at: device_release_driver_internal+0x18/0x1bc
#5: bf019034 (rppc_devices_lock){+.+.}, at: rppc_remove+0x3c/0x238 [rpmsg_rpc]
#6: e4282380 (&rppcdev->lock){+.+.}, at: rppc_remove+0x88/0x238 [rpmsg_rpc]
3. Circular locking dependency during error recovery of rpmsg-proto driver
======================================================
WARNING: possible circular locking dependency detected
-------------------------------------------------------
kworker/0:1/21 is trying to acquire lock:
e47869c0 (&ept->cb_lock){+.+.}, at: __rpmsg_destroy_ept+0x40/0x6c [virtio_rpmsg_bus]
but task is already holding lock:
bf027034 (rpmsg_channels_lock){+.+.}, at: rpmsg_proto_remove+0x28/0x16c [rpmsg_proto]
which lock already depends on the new lock.
other info that might help us debug this:
Possible unsafe locking scenario:
CPU0 CPU1
---- ----
lock(rpmsg_channels_lock);
lock(&ept->cb_lock);
lock(rpmsg_channels_lock);
lock(&ept->cb_lock);
*** DEADLOCK ***
6 locks held by kworker/0:1/21:
#0: e700b6a0 ((wq_completion)events){+.+.}, at: process_one_work+0x1f4/0x824
#1: e6057f24 ((work_completion)(&rproc->crash_handler)){+.+.}, at: process_one_work+0x1f4/0x824
#2: e3884b1c (&rproc->lock){+.+.}, at: rproc_trigger_recovery+0x44/0x460
#3: e20a88e4 (&dev->mutex){....}, at: device_release_driver_internal+0x18/0x1bc
#4: e39ae0bc (&dev->mutex){....}, at: device_release_driver_internal+0x18/0x1bc
#5: bf027034 (rpmsg_channels_lock){+.+.}, at: rpmsg_proto_remove+0x28/0x16c [rpmsg_proto]
Signed-off-by: Angela Stegmaier <angelabaker@ti.com>
[s-anna@ti.com: flip the subclass values, update crash log examples for 5.4]
Signed-off-by: Suman Anna <s-anna@ti.com>
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commit e3eeb6891cd274d7fddd4590417baf34f7c1d6f0 from
git://git.ti.com/ti-linux-kernel/ti-linux-kernel.git
The virtio rpmsg logic is always based on publishing the physical vring
buffers in the vring control structures to expose them to the remote
processor side. Commit 9dd87c2af651 ("rpmsg: virtio_rpmsg_bus: fix
sg_set_buf() when addr is not a valid kernel address") has fixed up
this logic to scale for the case with the virtio rpmsg buffers were
allocated from either a HighMem region or a dedicated carveout (mapped
into kernel in vmalloc space). The fix initialized the sg_table with
appropriate page address which is translated back to a dma_addr_t
using sg_phys() call in virtqueue_add() (in vring_map_one_sg())
function. This fix was sufficient for SoCs where both the host and
the remote processors used 32-bit addressing scheme.
This logic failed for TI Keystone platforms though, which have a 36-bit
physical address and only a regular 32-bit dma address (the first 2 GB
of RAM at 0x800000000 is aliased at 0x80000000) due to the truncation of
the physical address. Furthermore, the remote processors on these SoCs
leverage the 32-bit aliased address for referencing the IPC shared memory
buffers. Fix this issue and make the virtio rpmsg stack functional on
these platforms by initializing the sg entry with the page address
corresponding to the dma address of the vring buffer instead of it's
physical address. This solution allows the core virtio_ring code to
remain unchanged, and results in publishing the desired aliased
addresses in the vring control structures.
Signed-off-by: Suman Anna <s-anna@ti.com>
Signed-off-by: Xulin Sun <xulin.sun@windriver.com>
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commit da4efc56734e97e4f01f8a4b39ed95735667cfa3 from
git://git.ti.com/ti-linux-kernel/ti-linux-kernel.git
Return the rpmsg buffer MTU for sending message, so rpmsg users
can split a long message in several sub rpmsg buffers.
Signed-off-by: Arnaud Pouliquen <arnaud.pouliquen@st.com>
[s-anna@ti.com: cherry-pick https://patchwork.kernel.org/patch/11242365/]
Signed-off-by: Suman Anna <s-anna@ti.com>
Signed-off-by: Xulin Sun <xulin.sun@windriver.com>
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commit 5fce9a5039712562848b2a9f5134e76866e02d55 from
git://git.ti.com/ti-linux-kernel/ti-linux-kernel.git
Add a new description field to the rpmsg bus infrastructure
that can be passed onto the rpmsg client drivers for additional
information. The current rpmsg bus client drivers need to have
a fixed id_table for proper matching, this new field can allow
flexibility for the client drivers (eg: like creating unique
cdevs).
The description field is published through an enhanced name
service announcement message structure. The name service
message processing logic is updated to maintain backward
compatibility with the previous message structure.
Based on an initial patch from Ohad Ben-Cohen.
Signed-off-by: Ohad Ben-Cohen <ohad@wizery.com>
[s-anna@ti.com: forward port, add sysfs documentation, fixup qcom drivers]
[s-anna@ti.com: cherry-pick https://patchwork.kernel.org/patch/11096599/ ]
Signed-off-by: Suman Anna <s-anna@ti.com>
[t-kristo@ti.com: reworked to support both rpmsg with/without the desc field]
Signed-off-by: Tero Kristo <t-kristo@ti.com>
Signed-off-by: Xulin Sun <xulin.sun@windriver.com>
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The virtio_rpmsg_bus driver uses the "%p" format-specifier for
printing the vring buffer address. This prints only a hashed
pointer even for previliged users. Use "%pK" instead so that
the address can be printed during debug using kptr_restrict
sysctl.
Signed-off-by: Suman Anna <s-anna@ti.com>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
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Make header files alphabetical order.
Signed-off-by: Loic Pallardy <loic.pallardy@st.com>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
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Remoteproc is now capable to create one specific sub-device per
virtio link to associate a dedicated memory pool.
This implies to change device used by virtio_rpmsg for
buffer allocation from grand-parent to parent.
Signed-off-by: Loic Pallardy <loic.pallardy@st.com>
Reviewed-by: Anup Patel <anup@brainfault.org>
Tested-by: Anup Patel <anup@brainfault.org>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
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Use the appropriate SPDX license identifier in the virtio rpmsg
bus driver source file and drop the previous boilerplate license
text.
Signed-off-by: Suman Anna <s-anna@ti.com>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
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address
To specify memory for remoteproc, we declare (dma_declare_coherent_memory())
an area which is ioremap'ed to the vmalloc area. However, this address is
not a kernel address so virt_addr_valid(buf) fails.
Signed-off-by: Ludovic Barre <ludovic.barre@st.com>
Signed-off-by: Loic Pallardy <loic.pallardy@st.com>
Acked-by: Patrice Chotard <patrice.chotard@st.com>
Tested-by: Suman Anna <s-anna@ti.com>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
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Rpmsg buffer size is currently fixed to 512 bytes.
This patch introduces a new capability in struct virtproc_info
to tune shared buffer size between host and coprocessor
according to the needs.
Acked-by: Suman Anna <s-anna@ti.com>
Signed-off-by: Loic Pallardy <loic.pallardy@st.com>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
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Commit 8a228ecfe086b ("rpmsg: Indirection table for rpmsg_endpoint
operations") has made the rpmsg_send_offchannel_raw() a static
function and local to the virtio_rpmsg_bus module, but has not
dropped the corresponding EXPORT_SYMBOL. Fix this.
Signed-off-by: Suman Anna <s-anna@ti.com>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
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Trivial cleanup: the .ops pointer is assigned twice. This patch removes the
first assignment.
Acked-by: Suman Anna <s-anna@ti.com>
Signed-off-by: Henri Roosen <henri.roosen@ginzinger.com>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
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Commit 2a48d7322dc8 ("rpmsg: rpmsg_send() operations takes rpmsg_endpoint")
only changed the nameservice address for virtio_rpmsg_announce_create() but
did not do the same change for virtio_rpmsg_announce_destroy().
Signed-off-by: Henri Roosen <henri.roosen@ginzinger.com>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
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A device might not have an endpoint assigned. This patch checks if
rpdev->ept has a value before dereferencing or using it.
Signed-off-by: Henri Roosen <henri.roosen@ginzinger.com>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
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The rpmsg devices are allocated in the backends and as such must be
freed there as well.
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
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We are going to add more parameters to find_vqs, let's wrap the call so
we don't need to tweak all drivers every time.
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
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Add a struct irq_affinity pointer to the find_vqs methods, which if set
is used to tell the PCI layer to create the MSI-X vectors for our I/O
virtqueues with the proper affinity from the start. Compared to after
the fact affinity hints this gives us an instantly working setup and
allows to allocate the irq descritors node-local and avoid interconnect
traffic. Last but not least this will allow blk-mq queues are created
based on the interrupt affinity for storage drivers.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Jason Wang <jasowang@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
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Some rpmsg backends support holding on to and redelivering messages upon
failed handling of them, so provide a way for the callback to report and
error and allow the backends to handle this.
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
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Move virtio rpmsg implementation details from the public header file to
the virtio rpmsg implementation.
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
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Create a container struct virtio_rpmsg_channel around the rpmsg_channel
to keep virtio backend information separate from the rpmsg and public
API. This makes the public structures independant of virtio.
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
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Extract the generic rpmsg core functionality from the virtio rpmsg
implementation, splitting the implementation in a rpmsg core and a
virtio backend.
Based on initial work by Sricharan R <sricharan@codeaurora.org>
Cc: Sricharan R <sricharan@codeaurora.org>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
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The tail of create_channel() is common among all rpmsg backends, so
split it off from the virtio specific part to allow it to be extracted
to the rpmsg core.
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
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Extract and move the helper function for finding rpmsg child devices to
the core.
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
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Move the rpmsg_send() and rpmsg_destroy_ept() interface to the rpmsg
core, so that we eventually can hide the rpmsg_endpoint ops from the
public API.
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
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Add indirection table for rpmsg_endpoint related operations and move
virtio implementation behind this, this finishes of the decoupling of
the virtio implementation from the public API.
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
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Extract the now indirect rpmsg_create_ept() interface to a separate
file and start building up a rpmsg core.
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
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To allow for multiple backend implementations add an indireection table
for rpmsg_device related operations and move the virtio implementation
behind this table.
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
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The rpmsg device representing struct is called rpmsg_channel and the
variable name used throughout is rpdev, with the communication happening
on endpoints it's clearer to just call this a "device" in a public API.
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
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As we introduce support for additional rpmsg backends, some of these
only supports point-to-point "links" represented by a name. By making
rpmsg_create_ept() take a channel_info struct we allow for these
backends to either be passed a source address, a destination address or
a name identifier.
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
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The rpmsg_send() operations has been taking a rpmsg_device, but this
forces users of secondary rpmsg_endpoints to use the rpmsg_sendto()
interface - by extracting source and destination from the given data
structures. If we instead pass the rpmsg_endpoint to these functions a
service can use rpmsg_sendto() to respond to messages, even on secondary
endpoints.
In addition this would allow us to support operations on multiple
channels in future backends that does not support off-channel
operations.
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
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By basing rpmsg device names on channel id we end up with human readable
device names in sysfs and debug logs.
Reviewed-by: Sarangdhar Joshi <spjoshi@codeaurora.org>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
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Make it possible to match rpmsg devices based on device tree node, in
addition to the id table. In some of these cases the rpmsg driver would
not have a id_table, so make this optional.
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
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There are couple of print_hex_dump traces used in rpmsg code which
prints the actual byte messages being transferred between host and
the remote processors. These traces are quiet verbose and affects
performance, if the appropriate trace level is enabled. These hex
dumps are needed rather rarely, but are quite useful when debugging
complex IPC corner cases. So, this patch switches these hex dump
traces to use the dynamic_hex_dump() API.
The hex dump traces are also enabled only when CONFIG_DYNAMIC_DEBUG
is enabled. This switch allows flexibility of controlling these
traces through dynamic debug, instead of removing them completely.
Signed-off-by: Suman Anna <s-anna@ti.com>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
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This patch fixes most of the existing alignment checkpatch check
warnings of the type "Alignment should match open parenthesis"
in the virtio rpmsg bus code. A couple of them have been left as
is to not exceed the 80-char limit.
Signed-off-by: Suman Anna <s-anna@ti.com>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
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The dma_addr_t types can be printed properly using the %pad
printk format-specifier, there is no need to resort to the
unsigned long long type-casting to deal with different possible
type sizes.
Signed-off-by: Suman Anna <s-anna@ti.com>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
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These types of error prints are superfluous. The system will
pick up on OOM issues and let the user know. While at this,
fix the usage of using a structure instead of the actual
variable in one of the allocations.
Signed-off-by: Suman Anna <s-anna@ti.com>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
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It should never have been there in the first place.
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
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Found with scripts/coccinelle/misc/boolconv.cocci.
Signed-off-by: Andrew F. Davis <afd@ti.com>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
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Add register_rpmsg_driver helper macro that adds THIS_MODULE to
rpmsg_driver for the registering driver. We rename and modify
the existing register_rpmsg_driver to enable this.
Signed-off-by: Andrew F. Davis <afd@ti.com>
Acked-by: Suman Anna <s-anna@ti.com>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
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checkpatch.pl wants arrays of strings declared as follows:
static const char * const names[] = { "vq-1", "vq-2", "vq-3" };
Currently the find_vqs() function takes a const char *names[] argument
so passing checkpatch.pl's const char * const names[] results in a
compiler error due to losing the second const.
This patch adjusts the find_vqs() prototype and updates all virtio
transports. This makes it possible for virtio_balloon.c, virtio_input.c,
virtgpu_kms.c, and virtio_rpmsg_bus.c to use the checkpatch.pl-friendly
type.
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Acked-by: Bjorn Andersson <bjorn.andersson@sonymobile.com>
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virtio spec requires that all drivers set DRIVER_OK
before using devices. While rpmsg isn't yet
included in the virtio 1 spec, previous spec versions
also required this.
virtio rpmsg violates this rule: is calls kick
before setting DRIVER_OK.
The fix isn't trivial since simply calling virtio_device_ready earlier
would mean we might get an interrupt in parallel with adding buffers.
Instead, split kick out to prepare+notify calls. prepare before
virtio_device_ready - when we know we won't get interrupts. notify right
afterwards.
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Acked-by: Ohad Ben-Cohen <ohad@wizery.com>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
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Adjust the number of rpmsg buffers to rely on the size of the
vring, instead of using the hard coded value of 512 (256 per
direction).
This is needed when small vrings are being used, where 256
buffers are too much to fit in a vring.
While considering the vring size, keep using the 512 hard coded
value as an upper limit to avoid wacky resource tables consuming
unreasonable amount of memory.
NOTE: The number of buffers is already assumed to be symmetrical
in each direction, and that logic is unchanged.
Signed-off-by: Suman Anna <s-anna@ti.com>
[edit commit message, small code and comment simplification]
Signed-off-by: Ohad Ben-Cohen <ohad@wizery.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/ohad/rpmsg
Pull rpmsg changes from Ohad Ben-Cohen:
"A small pull request consisting of:
- Make rpmsg process all pending messages instead of just one, from
Robert Tivy
- Fix Kconfig dependency on VIRTUALIZATION, from Suman.
Note: this was submitted late during the 3.9 rc cycle and it seemed
appropriate to wait with it for the merge window.
- Belated addition of an rpmsg entry to the MAINTAINERS file. People
seem to look for this"
* tag 'rpmsg-3.10' of git://git.kernel.org/pub/scm/linux/kernel/git/ohad/rpmsg:
rpmsg: fix kconfig dependencies for VIRTIO
MAINTAINERS: add rpmsg entry
rpmsg: process _all_ pending messages in rpmsg_recv_done
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git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux
Pull virtio & lguest updates from Rusty Russell:
"Lots of virtio work which wasn't quite ready for last merge window.
Plus I dived into lguest again, reworking the pagetable code so we can
move the switcher page: our fixmaps sometimes take more than 2MB now..."
Ugh. Annoying conflicts with the tcm_vhost -> vhost_scsi rename.
Hopefully correctly resolved.
* tag 'virtio-next-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux: (57 commits)
caif_virtio: Remove bouncing email addresses
lguest: improve code readability in lg_cpu_start.
virtio-net: fill only rx queues which are being used
lguest: map Switcher below fixmap.
lguest: cache last cpu we ran on.
lguest: map Switcher text whenever we allocate a new pagetable.
lguest: don't share Switcher PTE pages between guests.
lguest: expost switcher_pages array (as lg_switcher_pages).
lguest: extract shadow PTE walking / allocating.
lguest: make check_gpte et. al return bool.
lguest: assume Switcher text is a single page.
lguest: rename switcher_page to switcher_pages.
lguest: remove RESERVE_MEM constant.
lguest: check vaddr not pgd for Switcher protection.
lguest: prepare to make SWITCHER_ADDR a variable.
virtio: console: replace EMFILE with EBUSY for already-open port
virtio-scsi: reset virtqueue affinity when doing cpu hotplug
virtio-scsi: introduce multiqueue support
virtio-scsi: push vq lock/unlock into virtscsi_vq_done
virtio-scsi: pass struct virtio_scsi to virtqueue completion function
...
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Return a negative error code from the error handling case instead of 0, as
returned elsewhere in this function.
Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn>
Cc: Ohad Ben-Cohen <ohad@wizery.com>
Cc: Tejun Heo <tj@kernel.org>
Cc: Stephen Boyd <sboyd@codeaurora.org>
Cc: Rusty Russell <rusty@rustcorp.com.au>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Change virtqueue callback function rpmsg_recv_done() to process all
available messages instead of just one message.
Signed-off-by: Robert Tivy <rtivy@ti.com>
[split _recv function instead of adding indentation]
Signed-off-by: Ohad Ben-Cohen <ohad@wizery.com>
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We never add buffers with input and output parts, so use the new accessors.
Cc: Ohad Ben-Cohen <ohad@wizery.com>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
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Convert to the much saner new idr interface.
Signed-off-by: Tejun Heo <tj@kernel.org>
Cc: Ohad Ben-Cohen <ohad@wizery.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Bruce Ashfield
Xiaolei Wang
Angela Stegmaier
Suman Anna
Arnaud Pouliquen
Ohad Ben-Cohen
Loic Pallardy
Henri Roosen
Bjorn Andersson
Michael S. Tsirkin
Christoph Hellwig
Lee Jones
Andrew F. Davis
Stefan Hajnoczi
Linus Torvalds
Wei Yongjun
Robert Tivy
Rusty Russell
Tejun Heo