Vijay Kumar [Mon, 23 Jan 2017 17:53:03 +0000 (09:53 -0800)]
sparc64:block/sunvdc: Renamed bio variable name from req to bio
Changed bio variable name from req to bio for better readability.
This is just a cosmetic change.
Signed-off-by: Vijay Kumar <vijay.ac.kumar@oracle.com> Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com>
Orabug: 25128265 Signed-off-by: Allen Pais <allen.pais@oracle.com>
Vijay Kumar [Wed, 18 Jan 2017 16:10:12 +0000 (08:10 -0800)]
sparc64:block/sunvdc: Added io stats accounting for bio based vdisk
As vdisk now bypass block layer and directly submits IO, iostats does
not get accounted (which happens at block). Added IO accounting at bio
layer for vdisk block device.
Signed-off-by: Vijay Kumar <vijay.ac.kumar@oracle.com> Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com>
Orabug: 25128265 Signed-off-by: Allen Pais <allen.pais@oracle.com>
chris hyser [Wed, 15 Mar 2017 17:51:34 +0000 (10:51 -0700)]
sparc64: Remove node restriction from PRIQ MSI assignments
The current design of PRIQ only allows MSI routing to CPUs within the same
I/O node. At best this prevents certain types of CPU add/removals as well
as various affinity assignments and at worst can result in dropped
interrupts with CPU DR.
This prior design used a per-node hash table with collision chain (and RCU
synchronization) shared among the root complexes. While it would be
possible to support moving these records between the node hash tables this
is needlessly complicated when a single global table could be used instead
assuming the hashing mechanism was modified to limit the potential for
performance degradation through potentially longer collision chains and
more lookups.
The new design for MSI uses the bottom N bits of the device handle as a
hash versus hashing device handle and msidata together as before. This
exploits the existing numbering scheme to result in zero collisions (even
in an exactly sized hash table). If the numbering scheme is changed on a
future system, that system will still be functional though presumably
with some performance loss. The MSI data is then used as an index into a
array as has been done for prior linux sun4v interrupt model support. Given
the very small number of INTX interrupts, their handling remains
essentially unchanged (now uses a single global hash table, versus per I/O
node as before).
chris hyser [Fri, 3 Mar 2017 21:24:22 +0000 (13:24 -0800)]
blk-mq: Clean up all_q_list on request_queue deletion
Entries were not being removed from all_q_list when corresponding request
queue structs were freed with subsequent embedded list pointers being
trashed when the queue memory was re-allocated. Additionally, due to use of
cached allocation pool (kmem_cache_alloc_node), the same data structure
would be reinserted into the same list twice which cannot work given the
kernel linked list implementation.
Signed-off-by: Chris Hyser <chris.hyser@oracle.com> Reviewed-by: Shannon Nelson <shannon.nelson@oracle.com>
Orabug: 25569331 Signed-off-by: Allen Pais <allen.pais@oracle.com>
I encountered this bug when using /proc/kcore to examine the kernel. Plus a
coworker inquired about debugging tools. We computed pa but did
not use it during the maximum physical address bits test. Instead we used
the identity mapped virtual address which will always fail this test.
I believe the defect came in here:
[bpicco@zareason linus.git]$ git describe --contains bb4e6e85daa52
v3.18-rc1~87^2~4
.
Signed-off-by: Bob Picco <bob.picco@oracle.com> Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Allen Pais <allen.pais@oracle.com>
Chuck Anderson [Fri, 5 May 2017 16:57:23 +0000 (09:57 -0700)]
Merge branch topic/uek-4.1/sparc of git://ca-git.us.oracle.com/linux-uek into uek/uek-4.1
* topic/uek-4.1/sparc: (32 commits)
sparc64: Detect DAX ra+pgsz when hvapi minor doesn't indicate it
sparc64: DAX memory will use RA+PGSZ feature in HV
sparc64: Disable DAX flow control
sparc64: Add DAX hypervisor services
sparc64: DAX memory needs persistent mappings
sparc64: Fix incorrect error print in DAX driver when validating ccb
sparc64: DAX request for non 4MB memory should return with unique errno
Revert "sparc64: DAX request for non 4MB memory should return with unique errno"
sparc64: DAX request to mmap non 4MB memory should fail with a debug print
sparc64: DAX request for non 4MB memory should return with unique errno
sparc64: Incorrect print by DAX driver when old driver API is used
sparc64: DAX request to dequeue half of a long CCB should not succeed
sparc64: dax_overflow_check reports incorrect data
sparc64: Ignored DAX ref count causes lockup
sparc64: disable dax page range checking on RA
sparc64: Oracle Data Analytics Accelerator (DAX) driver
sparc64: fix an issue when trying to bring hotplug cpus online
sparc64: Fix memory corruption when THP is enabled
sparc64: Fix address range for page table free Orabug: 25704426
sparc64: Add support for 2G hugepages
...
The RA+PGSZ HV API feature is detected via a controlled experiment.
The experiment constructs a small DAX request and places the output
buffer at the very end of an 8k page. Then it checks to see if the 8k
page boundary was honored, and if so, then we've got the ability to pass
the page size along with a real address. Once the HV API minor number
is bumped to 1, this will be the primary method of detection.
Signed-off-by: Rob Gardner <rob.gardner@oracle.com> Reviewed-by: Jonathan Helman <jonathan.helman@oracle.com>
(cherry picked from commit 013d5b9909e804817dcd939f50f242f09237feac) Signed-off-by: Allen Pais <allen.pais@oracle.com>
The reported kernel panics and "other oddities" are caused by
corruption of kernel memory by DAX output. This is happening due to an
apparent change between UEK2 and UEK4, whereby the underlying h/w page
size for memory acquired via kmalloc has changed. UEK2 used 4mb pages,
which the dax driver used to limit the output from the coprocessor,
who refuses to cross "page boundaries". But in UEK4 it appears that a
more intelligent approach to memory is used, and kernel memory may be
backed by a variety of huge h/w page sizes, ie, 256mb and 2gb. This
now allows DAX to produce output up to this much larger page size,
thus going beyond the actual allocation. We do not have any way to
kmalloc memory with a certain backing page size, and we cannot feed
DAX a virtual address if we are not certain of its page size.
Recent hypervisor f/w has provided a powerful new feature: the ability
to convey page size bits along with a real address (RA). This gives us
the opportunity to avoid using the TLB/TSB as a parameter passing
mechanism and we can use this to avoid using virtual addresses at all
in a DAX ccb. We now use this mechanism to set the page size for
dax_alloc memory to 4mb even if the underlying h/w page size for the
memory is much larger. Memory allocated by the application via
conventional methods is not affected.
This HV feature is available on M7 f/w with minor number 1, so this is
used to determine if the driver can provide the memory allocation
service. If the feature is not available, DAX will still work, but all
the responsibility for memory allocation falls back to the
application.
The sudden ENOACCESS errors are a result of another hypervisor change.
Newest HV firmware has begun to enforce the privileged flag (bit 14)
in arg2 of the ccb_submit hypercall. This flag is described in the API
wiki as "CCB virtual addresses are treated as privileged" and in the
VM spec as "Virtual addresses within CCBs are translated in privileged
context". The explanation given later in the VM spec is that if a CCB
contains any virtual address whose TTE has the priv bit set
(_PAGE_P_4V), then the priv flag in the ccb_submit api must also be
set, or else the hypervisor will refuse to perform the translation,
and an ENOACCESS error will be thrown. Since privileged virtual
addresses are no longer used as a result of this very commit, this
problem simply disappears.
Signed-off-by: Rob Gardner <rob.gardner@oracle.com> Reviewed-by: Jonathan Helman <jonathan.helman@oracle.com> Signed-off-by: Allen Pais <allen.pais@oracle.com>
The flow control feature of DAX only works for output buffers
and it doesn't appear to be possible to calculate the exact
size in bytes of an input buffer. So we have no way to bound
the amount of data that DAX reads as input. This has correctness
and security implications, so until we figure out something better
to do, the temporary workaround is to disable flow control completely
and fall back to 4Mb virtual page backed dax_alloc memory, which
will allow page boundaries to limit the size of all buffers. A new
module parameter "flow_enable" is provided to allow this decision
to be reverted at module load time if needed.
Signed-off-by: Rob Gardner <rob.gardner@oracle.com> Reviewed-by: Jonathan Helman <jonathan.helman@oracle.com> Reviewed-by: Sanath Kumar <sanath.s.kumar@oracle.com> Signed-off-by: Allen Pais <allen.pais@oracle.com>
Reviewed-by: Bob Picco <bob.picco@oracle.com> Signed-off-by: Sanath Kumar <sanath.s.kumar@oracle.com> Signed-off-by: Rob Gardner <rob.gardner@oracle.com> Signed-off-by: Allen Pais <allen.pais@oracle.com>
fpu_activate is called outside of vcpu_load(), which means it should not
touch VMCS, but fpu_activate needs to. Avoid the call by moving it to a
point where we know that the guest needs eager FPU and VMCS is loaded.
Memory allocated on behalf of dax_alloc() is mapped by two
distinct MMU translations, one set for userland, which is backed by
regular 8k virtual pages, and another set for feeding to the
hypervisor, and these are kernel virtual addresses backed
by 4Mb pages. These latter translations are only used when
the memory is allocated/deallocated and when a dax transaction
is submitted. So the translations are unlikely to be in the TLB,
and eventually may be evicted from the kernel TSB after some time.
This leads to ENOMAP errors reported by the hypervisor. In order
to avoid this, we "touch" such pages just before dax_submit
which will fault translations into the tlb/tsb if necessary.
A future performance optimization is to take advantage of the "real
address has pagesize" feature which is available in very recent
versions of hypervisor f/w. In this case we can convert the address
in the ccb to a real address with the correct bits to specify
a 4Mb pagesize, and change the address type to real. Then the
memory touch would be unnecessary and the HV would not need to
probe the tlb/tsb at all.
Signed-off-by: Rob Gardner <rob.gardner@oracle.com> Reviewed-by: HÃ¥kon Bugge <haakon.bugge@oracle.com> Reviewed-by: Jonathan Helman <jonathan.helman@oracle.com> Signed-off-by: Allen Pais <allen.pais@oracle.com>
This fixes an incorrect stringification in a macro that prints
invalid address type in a CCB.
Reviewed-by: Rob Gardner <rob.gardner@oracle.com> Signed-off-by: Sanath Kumar <sanath.s.kumar@oracle.com> Signed-off-by: Allen Pais <allen.pais@oracle.com>
With this change libdax can detect that mmap failed due to lack of flow
control in DAX HW and it can proceed with dax_subpage allocation.
Reviewed-by: Rob Gardner <rob.gardner@oracle.com> Signed-off-by: Sanath Kumar <sanath.s.kumar@oracle.com> Signed-off-by: Allen Pais <allen.pais@oracle.com>
When the dax flow control is disabled, dax_alloc_mem(...) only allows 4MB
allocation in the driver. Any other requests are reported as an error
with an error print to the kernel log. We now have a dax subpage
allocator in libdax which gets triggered when the driver reports the
above said failure. In other words it is a normal use case for the driver
to report this. So make this a debug print.
Reviewed-by: Shannon Nelson <shannon.nelson@oracle.com> Signed-off-by: Sanath Kumar <sanath.s.kumar@oracle.com> Signed-off-by: Allen Pais <allen.pais@oracle.com>
With this change libdax can detect that mmap failed due to lack of flow
control in DAX HW and it can proceed with dax_subpage allocation.
Reviewed-by: Rob Gardner <rob.gardner@oracle.com> Signed-off-by: Sanath Kumar <sanath.s.kumar@oracle.com> Signed-off-by: Allen Pais <allen.pais@oracle.com>
If an old dax driver API is used, it is the driver API version
that is old, irrespective of the libdax version.
Reviewed-by: Rob Gardner <rob.gardner@oracle.com> Reviewed-by: Shannon Nelson <shannon.nelson@oracle.com> Signed-off-by: Sanath Kumar <sanath.s.kumar@oracle.com> Signed-off-by: Allen Pais <allen.pais@oracle.com>
When a dequeue call is made to the driver such that the last CCB in the
request is the first half of a long ccb, the driver does not report an
error and releases the BIP buffer for the CCBs dequeued up until then.
This was detected by a ioctl_test23 written by Stanislav specifically to
validate the above scenario.
This bug fix addresses both the above issues.
Reviewed-by: Rob Gardner <rob.gardner@oracle.com> Signed-off-by: Sanath Kumar <sanath.s.kumar@oracle.com> Signed-off-by: Allen Pais <allen.pais@oracle.com>
The range reported for a page overflow is incorrect when
the address is page_size aligned. Add 1 to the address so
that it always reports the next page_size boundary.
Reviewed-by: Rob Gardner <rob.gardner@oracle.com> Signed-off-by: Sanath Kumar <sanath.s.kumar@oracle.com> Signed-off-by: Allen Pais <allen.pais@oracle.com>
The dax_mm structure has a reference count that respresents
the number of dax_vma structures that point to it. The reference
count is duly incremented and decremented each time memory is
allocated via the dax_alloc/mmap path. However, the reference
count is never used for its intended purpose, which is to
prevent the dax_mm structure from being freed while there
are references to it. The result of this is that if dax_free
is called after the process's dax_mm is cleaned up, the dax_vma
will have a reference to the freed object, leading to panics
due to null pointers and/or lockups due to inalid spinlock state.
Code changed to actually check the reference count before freeing
a dax_mm.
Signed-off-by: Rob Gardner <rob.gardner@oracle.com> Reviewed-by: Sanath Kumar <sanath.s.kumar@oracle.com> Signed-off-by: Allen Pais <allen.pais@oracle.com>
This fix is to address a hypervisor f/w change which affects
T7 machines with 3.0 cpu and T8 machines. Newer HV f/w
pays attention to the page size field in real addresses.
This is not a bug; I asked them to implement this long ago.
A value of zero here means 8k, so RA buffers are restricted
to one page when running on newer firmware. The PRM defines a page
size of 0xF to mean "disable page range checking". We set this
value for all real addresses. Old f/w will overwrite this field
anyway, so it's safe for us to always set it.
Signed-off-by: Rob Gardner <rob.gardner@oracle.com> Reviewed-by: Jonathan Helman <jonathan.helman@oracle.com> Signed-off-by: Allen Pais <allen.pais@oracle.com>
DAX is a coprocessor which resides on the SPARC M7 processor chip, and
has direct access to the CPU's L3 caches as well as physical
memory. It can perform several operations on data streams with
various input and output formats. The driver is merely a transport
mechanism and does not have knowledge of the various opcodes and data
formats. A user space library provides high level services and
translates these into low level commands which are then passed into
the driver and subsequently the hypervisor and the coprocessor.
See Documentation/sparc/dax.txt for more details.
Reviewed-by: Jonathan Helman <jonathan.helman@oracle.com> Reviewed-by: Shannon Nelson <shannon.nelson@oracle.com> Reviewed-by: David Aldridge <david.j.aldridge@oracle.com> Reviewed-by: Stanislav Kholmanskikh <stanislav.kholmanskikh@oracle.com> Signed-off-by: Rob Gardner <rob.gardner@oracle.com> Signed-off-by: Sanath Kumar <sanath.s.kumar@oracle.com> Signed-off-by: Allen Pais <allen.pais@oracle.com>
Dave Aldridge [Fri, 24 Mar 2017 12:01:00 +0000 (06:01 -0600)]
sparc64: fix an issue when trying to bring hotplug cpus online
When booting the kernel with maxcpus= on the command line
and then subsequently trying to bring cpus online using:
echo 1 > /sys/devices/system/cpu/cpu[n]/online
messages of the form:
ldom_startcpu_cpuid: sun4v_cpu_start() gives error 6
Processor[n] is stuck
were being reported on the console.
This commit fixes this issue by ensuring that any cpus not
booted during initial kernel boot are explicitly stopped.
This then allows them to be successfully brought online later
if required.
Signed-off-by: Dave Aldridge <david.j.aldridge@oracle.com> Reviewed-by: Shannon Nelson <shannon.nelson@oracle.com> Reviewed-by: Allen Pais <allen.pais@oracle.com> Signed-off-by: Allen Pais <allen.pais@oracle.com>
Reported-by: David S. Miller <davem@davemloft.net> Signed-off-by: Nitin Gupta <nitin.m.gupta@oracle.com> Signed-off-by: Allen Pais <allen.pais@oracle.com>
Signed-off-by: Nitin Gupta <nitin.m.gupta@oracle.com> Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Allen Pais <allen.pais@oracle.com>
Signed-off-by: Jagannathan Raman <jag.raman@oracle.com> Reviewed-by: Shannon Nelson <shannon.nelson@oracle.com> Reviewed-by: Bijan Mottahedeh <bijan.mottahedeh@oracle.com> Reviewed-by: Jack Schwartz <jack.schwartz@oracle.com> Signed-off-by: Allen Pais <allen.pais@oracle.com>
George Kennedy [Wed, 22 Mar 2017 17:39:32 +0000 (13:39 -0400)]
SPARC64: Virtual Disk Device (vdsdev) Read-Only Option (options=ro) not working
Add read-only (options=ro) support to virtual disk server (VDS).
Signed-off-by: George Kennedy <george.kennedy@oracle.com> Reviewed-by: Alexandre Chartre <Alexandre.Chartre@oracle.com>
Orabug: 23623853 Signed-off-by: Allen Pais <allen.pais@oracle.com>
Babu Moger [Tue, 7 Mar 2017 22:19:55 +0000 (14:19 -0800)]
arch/sparc: Fix FPU register corruption with AES crypto test on M7
We noticed crypto key corruption while running AES crypto tests
with M7 memcpy changes. Investigating further, we found that this
was the same problem reported previously with NG4memcpy. The commit f4da3628dc7c ("sparc64: Fix FPU register corruption with AES crypto
offload") fixes the problem. Ported these changes to M7memcpy.
Signed-off-by: Babu Moger <babu.moger@oracle.com> Tested-by: Stanislav Kholmanskikh <stanislav.kholmanskikh@oracle.com> Signed-off-by: Allen Pais <allen.pais@oracle.com>
Shannon Nelson [Tue, 14 Mar 2017 17:24:43 +0000 (10:24 -0700)]
sunvnet: xoff not needed when removing port link
The sunvnet netdev is connected to the controlling ldom's vswitch
for network bridging. However, for higher performance between ldoms,
there also is a channel between each client ldom. These connections are
represented in the sunvnet driver by a queue for each ldom. The driver
uses select_queue to tell the stack which queue to use by tracking the mac
addresses on the other end of each port. When a connected ldom shuts down,
the driver receives an LDC_EVENT_RESET and the port is removed from the
driver, thus a queue with no ldom on the other end will never be selected
for Tx.
The driver was trying to reinforce the "don't use this queue" notion with
netif_tx_stop_queue() and netif_tx_wake_queue(), which really should only
be used to signal a Tx queue is full (aka XOFF). This misuse of queue
state resulted in NETDEV WATCHDOG messages and lots of unnecessary calls
into the driver's tx_timeout handler. Simply removing these takes care
of the problem.
Signed-off-by: Shannon Nelson <shannon.nelson@oracle.com> Signed-off-by: David S. Miller <davem@davemloft.net>
(cherry-picked from commit 9c5a3a1f9388100d4b03e85faf0cce8264985302)
Signed-off-by: Shannon Nelson <shannon.nelson@oracle.com> Signed-off-by: David S. Miller <davem@davemloft.net>
(cherry-picked from commit b12a96f5cd04583f45a1b6554b8f3786b26db913)
Shannon Nelson [Tue, 14 Mar 2017 17:24:41 +0000 (10:24 -0700)]
sunvnet: track port queues correctly
Track our used and unused queue indexies correctly. Otherwise, as ports
dropped out and returned, they all eventually ended up with the same
queue index.
Signed-off-by: Shannon Nelson <shannon.nelson@oracle.com> Signed-off-by: David S. Miller <davem@davemloft.net>
(cherry-picked from commit e1f1e5f711265ee9d881afd12ff252b2d01e1174)
Shannon Nelson [Tue, 14 Mar 2017 17:24:40 +0000 (10:24 -0700)]
sunvnet: add stats to track ldom to ldom packets and bytes
In this driver, there is a "port" created for the connection to each of
the other ldoms; a netdev queue is mapped to each port, and they are
collected under a single netdev. The generic netdev statistics show
us all the traffic in and out of our network device, but don't show
individual queue/port stats. This patch breaks out the traffic counts
for the individual ports and gives us a little view into the state of
those connections.
Signed-off-by: Shannon Nelson <shannon.nelson@oracle.com> Signed-off-by: David S. Miller <davem@davemloft.net>
(cherry-picked from commit 0f512c84544b9a8f8de53b6f4bc0c372c45d8693)
Shannon Nelson [Tue, 14 Mar 2017 17:24:39 +0000 (10:24 -0700)]
ldmvsw: better use of link up and down on ldom vswitch
When an ldom VM is bound, the network vswitch infrastructure is set up for
it, but was being forced 'UP' by the userland switch configuration script.
When 'UP' but not actually connected to a running VM, the ipv6 neighbor
probes fail (not a horrible thing) and start cluttering up the kernel logs.
Funny thing: these are debug messages that never actually show up, but
we do see the net_ratelimited messages that say N callbacks were
suppressed.
This patch defers the netif_carrier_on() until an actual link has been
established with the VM, as indicated by receiving an LDC_EVENT_UP from
the underlying LDC protocol. Similarly, we take the link down when we
see the LDC_EVENT_RESET. Now when we see the ndo_open(), we reset the
link to get things talking again.
Signed-off-by: Shannon Nelson <shannon.nelson@oracle.com> Signed-off-by: David S. Miller <davem@davemloft.net>
(cherry-picked from commit 867fa150f8f7ee6e9e5a9ab768e2d0dc675a968b)
Chuck Anderson [Thu, 6 Apr 2017 07:17:44 +0000 (00:17 -0700)]
Merge branch topic/uek-4.1/sparc of git://ca-git.us.oracle.com/linux-uek into uek/uek-4.1
* topic/uek-4.1/sparc: (28 commits)
megaraid: Fix unaligned warning
sparc64: Restrict number of processes
SPARC64: vds_blk_rw() does not handle drives with q->limits.chunk_sectors > 0
sparc64: Improve boot time by per cpu map update
arch/sparc: memblock resizes are not handled properly
SPARC64: LDOM vnet "Got unexpected MCAST reply"
ldmvsw: disable tso and gso for bridge operations
ldmvsw: update and simplify version string
sunvnet: remove extra rcu_read_unlocks
sunvnet: straighten up message event handling logic
sunvnet: add memory barrier before check for tx enable
sunvnet: update version and version printing
sunvnet: remove unused variable in maybe_tx_wakeup
sunvnet: make sunvnet common code dynamically loadable
hwrng: n2 - update version info
hwrng: n2 - support new hardware register layout
hwrng: n2 - add device data descriptions
hwrng: n2 - limit error spewage when self-test fails
hwrng: n2 - Attach on T5/M5, T7/M7 SPARC CPUs
tcp: fix tcp_fastopen unaligned access complaints on sparc
...
Allen Pais [Wed, 29 Mar 2017 08:51:58 +0000 (14:21 +0530)]
megaraid: Fix unaligned warning
The MegaRAID userland descriptor structures do not properly align
pointers on their natural boundaries. This causes warnings to be issued
when storcli or the SNMP daemon are in use.
Quiesce the warning until the user-kernel interface has been fixed.
Signed-off-by: Kashyap Desai <kashyap.desai@broadcom.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
(cherry picked from commit 069af368ac74dc0130f91836b9f85f7cd5b18749) Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com> Signed-off-by: Allen Pais <allen.pais@oracle.com>
If the number of processes exceeds the number of supported context IDs
then there are random segfaults seen in the user programs.
The data collected when debugging this bug showed that two processes
with the same context IDs were present in the TLB shared between them
thus resulting in incorrect translations. Since the bug occurs after the
kernel hits the max context ID supported by the processor, the context
wraparound code found in get_new_mmu_context(...) and
smp_new_mmu_context_version_client(...) are under suspicion.
The plan is that this will get fixed when we implement "context domain"
feature for sparc in the kernel. For now this patch temporarily
restricts the number of processes allowed by the kernel based on the
number of context IDs supported by the processor. This way we never reach
that condition of having incorrect translations.
For non root users fork will fail if the number of existing processes is
greater than (max_user_nctx - 100). Where max_user_nctx is the maximum
number of context IDs supported by the processor. For root user the fork
will fail if the the number of existing processes reaches max_user_nctx.
Extra context IDs are given to root to recover the system if users reach
their limit and cannot recover the system (i.e cannot even execute
'kill' to reduce the number of processes).
Signed-off-by: Sanath Kumar <sanath.s.kumar@oracle.com> Reviewed-by: Rob Gardner <rob.gardner@oracle.com> Signed-off-by: Allen Pais <allen.pais@oracle.com>
George Kennedy [Wed, 15 Feb 2017 20:17:58 +0000 (15:17 -0500)]
SPARC64: vds_blk_rw() does not handle drives with q->limits.chunk_sectors > 0
Drives with q->limits.chunk_sectors > 0 are not properly handled by
vds_blk_rw(). Drives such as NVME set chunk_sectors to indicate a performance
boundary (see call to blk_queue_chunk_sectors() in nvme_alloc_ns()). Currently,
when vds_blk_rw() calls bio_add_page() and the chunk_sectors boundary would be
crossed, bio_add_page() returns zero and vds_blk_rw() fails with -EIO.
The proposed fix now adds an additional check to vds_blk_rw() when
bio_add_page() returns zero that checks for bio->bi_iter.bi_size != 0. If
bi_size != 0, it indicates that a page or pages have been successfully added by
bio_add_page(). When this added condition has been hit, exit the for loop in
vds_blk_rw() and submit the outstanding IOs and continue.
Signed-off-by: George Kennedy <george.kennedy@oracle.com> Reviewed-By: Bijan Mottahedeh <bijan.mottahedeh@oracle.com> Reviewed-By: Liam Merwick <Liam.Merwick@oracle.com>
Orabug: 25373818 Signed-off-by: Allen Pais <allen.pais@oracle.com>
Atish Patra [Mon, 13 Feb 2017 02:32:58 +0000 (19:32 -0700)]
sparc64: Improve boot time by per cpu map update
Currently, smp_fill_in_sib_core_maps is invoked during cpu_up to setup
all the core/sibling map correctly. This happens in the order of O(n^2)
as it iterates over all the online cpus twice when each cpu comes online.
This increases smp_init() execution time exponentially leading to a
higher boot time.
Optimize the code path by comparing only the current cpu with online
cpus and set the maps for both the cpus simultaneously. Take this
opportunity to merge all three for loops into one as well. Here is
the smp_init() time after and before the fix.
Number of cpus: before fix: after the fix:
512 2.30s .283s
1024 14.23s .493s
Signed-off-by: Atish Patra <atish.patra@oracle.com> Reviewed-by: Pavel Tatashin <pasha.tatashin@oracle.com> Reviewed-by: Allen Pais <allen.pais@oracle.com> Signed-off-by: Allen Pais <allen.pais@oracle.com>
Pavel Tatashin [Wed, 8 Feb 2017 21:02:39 +0000 (16:02 -0500)]
arch/sparc: memblock resizes are not handled properly
In add_node_ranges() when memblock resize happens, the iterator keeps using
the previous freed array. This bug cause hangs on machine where there are
over 128 memory blocks during boot. For example, on machines where memory
interleaving is small.
The problem is seen on T4-4 because it cant have 2T of memory, and memory
is interleaved at 8G. So we have 2T/8G = 256 regions to set node IDs. The
starting size of regions array is 128. Thus, we have to double at least one
time (actually we have to double twice because some memory is already
reserved and thus we need more than 256 regions). We start using an
incorrect pointer to the array after the first doubling.
George Kennedy [Wed, 8 Feb 2017 01:37:37 +0000 (20:37 -0500)]
SPARC64: LDOM vnet "Got unexpected MCAST reply"
Handle unexpected MCAST reply as a debug warning the same as is done in
Solaris 12. Please see bug 24954702 for details.
Signed-off-by: George Kennedy <george.kennedy@oracle.com> Reviewed-by: Liam Merwick <liam.merwick@oracle.com>
Orabug: 24954702 Signed-off-by: Allen Pais <allen.pais@oracle.com>
Shannon Nelson [Mon, 13 Feb 2017 18:57:04 +0000 (10:57 -0800)]
ldmvsw: disable tso and gso for bridge operations
The ldmvsw driver is specifically for supporting the ldom virtual
networking by running in the primary ldom and using the LDC to connect
the remaining ldoms to the outside world via a bridge. With TSO and GSO
supported while connected the bridge, things tend to misbehave as seen
in our case by delayed packets, enough to begin triggering retransmits
and affecting overall throughput. By turning off advertised support for
TSO and GSO we restore stable traffic flow through the bridge.
Signed-off-by: Shannon Nelson <shannon.nelson@oracle.com> Signed-off-by: David S. Miller <davem@davemloft.net>
(cherry picked from commit bc221a34ac473b444a7cfdd0c152b4c71f79326b) Signed-off-by: Allen Pais <allen.pais@oracle.com>
Signed-off-by: Shannon Nelson <shannon.nelson@oracle.com> Signed-off-by: David S. Miller <davem@davemloft.net>
(cherry picked from commit 7602011f59cc32ebc3a5f9058d6ba11b096c8c50) Signed-off-by: Allen Pais <allen.pais@oracle.com>
Shannon Nelson [Mon, 13 Feb 2017 18:57:02 +0000 (10:57 -0800)]
sunvnet: remove extra rcu_read_unlocks
The RCU read lock is grabbed first thing in sunvnet_start_xmit_common()
so it always needs to be released. This removes the conditional release
in the dropped packet error path and removes a couple of superfluous
calls in the middle of the code.
Reported-by: Bijan Mottahedeh <bijan.mottahedeh@oracle.com> Signed-off-by: Shannon Nelson <shannon.nelson@oracle.com> Signed-off-by: David S. Miller <davem@davemloft.net>
(cherry picked from commit daa86e50f649fccadafc53994ddc4254d75a008b) Signed-off-by: Allen Pais <allen.pais@oracle.com>
Shannon Nelson [Mon, 13 Feb 2017 18:57:01 +0000 (10:57 -0800)]
sunvnet: straighten up message event handling logic
The use of gotos for handling the incoming events made this code
harder to read and support than it should be. This patch straightens
out and clears up the logic.
Signed-off-by: Shannon Nelson <shannon.nelson@oracle.com> Signed-off-by: David S. Miller <davem@davemloft.net>
(cherry picked from commit bf091f3f362b3c562a18bbf7a2d3e2f3a36eba1d) Signed-off-by: Allen Pais <allen.pais@oracle.com>
Shannon Nelson [Mon, 13 Feb 2017 18:57:00 +0000 (10:57 -0800)]
sunvnet: add memory barrier before check for tx enable
In order to allow the underlying LDC and outstanding memory operations
to potentially catch up with the driver's Tx requests, add a memory
barrier before checking again for available tx descriptors.
Signed-off-by: Shannon Nelson <shannon.nelson@oracle.com> Signed-off-by: David S. Miller <davem@davemloft.net>
(cherry picked from commit fd263fb6e718c5bdf35cbc1de4f781c71794d2a4) Signed-off-by: Allen Pais <allen.pais@oracle.com>
Shannon Nelson [Mon, 13 Feb 2017 18:56:59 +0000 (10:56 -0800)]
sunvnet: update version and version printing
There have been several changes since the first version of this code, so
we bump the version number. While we're at it, we can simplify the
version printing a bit and drop a couple lines of code.
Signed-off-by: Shannon Nelson <shannon.nelson@oracle.com> Signed-off-by: David S. Miller <davem@davemloft.net>
(cherry picked from commit f2f3e210bffe5c8f8b30d0b0c7b0f733ff5db334) Signed-off-by: Allen Pais <allen.pais@oracle.com>
Sowmini Varadhan [Mon, 13 Feb 2017 18:56:58 +0000 (10:56 -0800)]
sunvnet: remove unused variable in maybe_tx_wakeup
The vio_dring_state *dr variable is unused in maybe_tx_wakeup().
As the comments indicate, we call maybe_tx_wakeup() whenever we
get a STOPPED LDC message on the port. If the queue is stopped,
we want to wake it up so that we will send another START message
at the next TX and trigger the consumer to drain the dring.
Signed-off-by: Sowmini Varadhan <sowmini.varadhan@oracle.com> Signed-off-by: Shannon Nelson <shannon.nelson@oracle.com> Signed-off-by: David S. Miller <davem@davemloft.net>
(cherry picked from commit d4aa89cc2bbe021722c946eb11b21ebb0f13c825) Signed-off-by: Allen Pais <allen.pais@oracle.com>
Shannon Nelson [Mon, 13 Feb 2017 18:56:57 +0000 (10:56 -0800)]
sunvnet: make sunvnet common code dynamically loadable
When the sunvnet_common code was split out for use by both sunvnet
and the newer ldmvsw, it was made into a static kernel library, which
limits the usefulness of sunvnet and ldmvsw as loadables, since most
of the real work is being done in the shared code. Also, this is
simply dead code in kernels that aren't running the LDoms.
This patch makes the sunvnet_common into a dynamically loadable
module and makes sunvnet and ldmvsw dependent on sunvnet_common.
Signed-off-by: Shannon Nelson <shannon.nelson@oracle.com> Signed-off-by: David S. Miller <davem@davemloft.net>
(cherry picked from commit 2493b842f258e14938f278e44ecc26970dfabbf0) Signed-off-by: Allen Pais <allen.pais@oracle.com>
Signed-off-by: Shannon Nelson <shannon.nelson@oracle.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
(cherry picked from commit 0ff1436fb2e3da085f7177d03ce4362c45b75d57) Signed-off-by: Allen Pais <allen.pais@oracle.com>
Signed-off-by: Shannon Nelson <shannon.nelson@oracle.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
(cherry picked from commit 07e25d43be8502bd8ab6122c4f6449ebf30e98f7) Signed-off-by: Allen Pais <allen.pais@oracle.com>
Shannon Nelson [Thu, 12 Jan 2017 18:52:47 +0000 (10:52 -0800)]
hwrng: n2 - add device data descriptions
Since we're going to need to keep track of more than just one
attribute of the hardware, we'll change the use of the data field
from the match struct from a single flag to a struct pointer.
This patch adds the struct template and initial descriptions.
Signed-off-by: Shannon Nelson <shannon.nelson@oracle.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
(cherry picked from commit becbc4940ad8e8ff560e1ceee33d9bb4fe4c9225) Signed-off-by: Allen Pais <allen.pais@oracle.com>
Shannon Nelson [Thu, 12 Jan 2017 18:52:46 +0000 (10:52 -0800)]
hwrng: n2 - limit error spewage when self-test fails
If the self-test fails, it probably won't actually suddenly
start working. Currently, this causes an endless spew of
error messages on the console and in the logs, so this patch
adds a limiter to the test.
Reported-by: Sowmini Varadhan <sowmini.varadhan@oracle.com> Signed-off-by: Shannon Nelson <shannon.nelson@oracle.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
(cherry picked from commit db602a7f940a71870c17e39bcbe4e4d7a4a8273e) Signed-off-by: Allen Pais <allen.pais@oracle.com>
Signed-off-by: Anatoly Pugachev <matorola@gmail.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
(cherry picked from commit c1e9b3b0eea12899b7749571af21cc60822cf2b6) Signed-off-by: Allen Pais <allen.pais@oracle.com>
Shannon Nelson [Thu, 12 Jan 2017 22:24:58 +0000 (14:24 -0800)]
tcp: fix tcp_fastopen unaligned access complaints on sparc
Fix up a data alignment issue on sparc by swapping the order
of the cookie byte array field with the length field in
struct tcp_fastopen_cookie, and making it a proper union
to clean up the typecasting.
This addresses log complaints like these:
log_unaligned: 113 callbacks suppressed
Kernel unaligned access at TPC[976490] tcp_try_fastopen+0x2d0/0x360
Kernel unaligned access at TPC[9764ac] tcp_try_fastopen+0x2ec/0x360
Kernel unaligned access at TPC[9764c8] tcp_try_fastopen+0x308/0x360
Kernel unaligned access at TPC[9764e4] tcp_try_fastopen+0x324/0x360
Kernel unaligned access at TPC[976490] tcp_try_fastopen+0x2d0/0x360
Cc: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: Shannon Nelson <shannon.nelson@oracle.com> Acked-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
(cherry picked from commit 003c941057eaa868ca6fedd29a274c863167230d) Signed-off-by: Allen Pais <allen.pais@oracle.com>
Liam R. Howlett [Tue, 31 Jan 2017 20:34:08 +0000 (12:34 -0800)]
vds: Add physical block support
Version 1.2 of the virtual IO device protocol added physical block
support. Start sending the underlaying physical block device size.
Signed-off-by: Liam R. Howlett <Liam.Howlett@Oracle.com> Reviewed-by: Shannon Nelson <shannon.nelson@oracle.com> Reviewed-by: Rob Gardner <rob.gardner@oracle.com>
Orabug: 19420123 Signed-off-by: Allen Pais <allen.pais@oracle.com>
Dave Aldridge [Fri, 17 Feb 2017 15:00:38 +0000 (07:00 -0800)]
sparc64: Add missing hardware capabilities for M7
Some M7 hardware capabilities were not being reported
correctly. This commit fixes the issue by adding definitions
for all the missing capabilities from both the Machine
Descriptor and the Compatibility Feature Register.
Signed-off-by: Dave Aldridge <david.j.aldridge@oracle.com> Reviewed-by: Shannon Nelson <shannon.nelson@oracle.com> Reviewed-by: Khalid Aziz <khalid.aziz@oracle.com> Signed-off-by: Allen Pais <allen.pais@oracle.com>
Jag Raman [Tue, 7 Mar 2017 21:41:31 +0000 (16:41 -0500)]
sparc64: VDC threads in guest domain do not resume after primary domain reboot
Prevents VDC threads from hanging while waiting for primary
domain to come back up. Ensures that all waiting VDC threads
are woken up when primary domain comes back up.
Liam R. Howlett [Wed, 1 Feb 2017 19:09:26 +0000 (14:09 -0500)]
sunvdc: Add support for setting physical sector size
Physical sector size is supported in v1.2 of the vDisk protocol and
should be set if available. If protocol version 1.2 is used and the
physical disk size is unavailable, then the disk is considered busy.
Signed-off-by: Liam R. Howlett <Liam.Howlett@Oracle.com> Signed-off-by: David S. Miller <davem@davemloft.net>
(Cherry-pick of upstream f41e54616ca1a199f6c17228f26082ccdaaab3de)
Orabug: 19420123 Signed-off-by: Allen Pais <allen.pais@oracle.com>
Atish Patra [Wed, 1 Mar 2017 02:18:26 +0000 (19:18 -0700)]
sparc64: create/destroy cpu sysfs dynamically
Currently, cpu/cpuX represents maximum number of possible
cpus in a domain. Those cpu sysfs directories also does
not change as we add/remove cpus via ldom manager.
Update sysfs so that it represents number of present cpus
in the domain. As a result, cpu sysfs is also updated
dynamically upon cpu add/removal.
Before the fix:
[root@ca-sparc76 ~]# ldm list
NAME STATE FLAGS CONS VCPU MEMORY UTIL NORM UPTIME
primary active -n-cv- UART 32 32G 0.2% 0.2% 11m
[root@ca-sparc76 ~]# getconf _NPROCESSORS_CONF
512
[root@ca-sparc76 ~]# ldm set-vcpu 64 primary
[root@ca-sparc76 ~]# ldm list
NAME STATE FLAGS CONS VCPU MEMORY UTIL NORM UPTIME
primary active -n-cv- UART 64 32G 0.0% 0.0% 12m
[root@ca-sparc76 ~]# getconf _NPROCESSORS_CONF
512
-------------------------------------------------------------------------
After the fix:
[root@ca-sparc76 ~]# getconf _NPROCESSORS_CONF
32
[root@ca-sparc76 ~]# ldm set-vcpu 64 primary
[root@ca-sparc76 ~]# ldm list
NAME STATE FLAGS CONS VCPU MEMORY UTIL NORM UPTIME
primary active -n-cv- UART 64 32G 0.0% 0.0% 12m
[root@ca-sparc76 ~]# getconf _NPROCESSORS_CONF
64
Signed-off-by: Atish Patra <atish.patra@oracle.com> Reviewed-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> Reviewed-by: Thomas Tai <thomas.tai@oracle.com> Signed-off-by: Allen Pais <allen.pais@oracle.com>
Khalid Aziz [Tue, 7 Mar 2017 18:26:10 +0000 (11:26 -0700)]
sparc64: Do not retain old VM_SPARC_ADI flag when protection changes on page
When protection on a memory page is changed with mprotect(), old
arch-specific VM flags on the page are retained. This patch clears
old VM_SPARC_ADI flag when protection is changed since mprotect() is
potentially being invoked to disable ADI on the page. This code will
add VM_SPARC_ADI flag back if the new protection includes it.
Aaron Young [Fri, 17 Feb 2017 23:18:53 +0000 (18:18 -0500)]
SPARC64: VIO: Support for virtual-device MD node probing
This update adds support to the mdesc/vio infrastructure to
probe for "virtual-device" nodes in the MD. The vio
module will create sysfs device files for these nodes which
can be accessed by user space code (such as udev). In addition,
VIO drivers can now probe for these MD nodes if the need arises.
This functionality will serve as part of the fix for
BUG 24841906.
Signed-off-by: Aaron Young <Aaron.Young@oracle.com> Reviewed-By: Alexandre Chartre <Alexandre.Chartre@oracle.com>
Orabug: 24841906
dtrace: fix handling of save_stack_trace sentinel (x86 only)
On x86 only, when save_stack_trace() writes less stack frames to the
buffer than there is space for, a ULONG_MAX is added as sentinel. The
DTrace code was mistakenly treating the buffer as always ending with a
ULONG_MAX.
Orabug: 25727046 Signed-off-by: Kris Van Hees <kris.van.hees@oracle.com> Reviewed-by: Tomas Jedlicka <tomas.jedlicka@oracle.com>
Signed-off-by: Tomas Jedlicka <tomas.jedlicka@oracle.com> Reviewed-by: Kris Van Hees <kris.van.hees@oracle.com> Acked-by: Nick Alcock <nick.alcock@oracle.com>
Tested-by: Pierre Orzechowski <pierre.e.orzechowski@oracle.com> Reviewed-by: Santosh Shilimkar <santosh.shilimkar@oracle.com> Signed-off-by: Eli Cohen <eli@mellanox.com> Signed-off-by: Mukesh Kacker <mukesh.kacker@oracle.com> Signed-off-by: Brian Maly <brian.maly@oracle.com>
Jake Oshins [Fri, 3 Mar 2017 07:28:52 +0000 (23:28 -0800)]
PCI: hv: Microsoft changes in support of RHEL and UEK4
This patch layers changes made by Microsoft in a Github repo to support
RHEL kernel versions, it eliminates the IRQ Domain dependencies of the
initial commit into mainline. This has a few modifications for OL7/UEK4.
Orabug: 25507635 Signed-off-by: Jack Vogel <jack.vogel@oracle.com>
Chuck Anderson [Thu, 9 Mar 2017 09:52:49 +0000 (01:52 -0800)]
Merge branch topic/uek-4.1/dtrace of git://ca-git.us.oracle.com/linux-uek into uek/uek-4.1
* topic/uek-4.1/dtrace:
dtrace: get rid of dtrace_gethrtime
dtrace: drop spurious debugging left in by accident
dtrace: comtinuing the FBT implementation and fixes
dtrace: ensure DTrace can use get_user_pages safely
dtrace: enable paranoid mode and IST shift for xen_int3
dtrace: ensure we skip the entire SDT probe point
dtrace: add ip SDT provider
Chuck Anderson [Thu, 9 Mar 2017 09:50:02 +0000 (01:50 -0800)]
Merge branch 'topic/uek-4.1/drivers' of git://ca-git.us.oracle.com/linux-uek into uek/uek-4.1
* topic/uek-4.1/drivers: (262 commits)
scsi: qla2xxx: Fix apparent cut-n-paste error.
scsi: qla2xxx: Fix Target mode handling with Multiqueue changes.
scsi: qla2xxx: Add Block Multi Queue functionality.
scsi: qla2xxx: Add multiple queue pair functionality.
qla2xxx: Add irq affinity notification
scsi: qla2xxx: Fix scsi scan hang triggered if adapter fails during init
be2net: get rid of custom busy poll code
be2net: fix initial MAC setting
be2net: fix MAC addr setting on privileged BE3 VFs
be2net: don't delete MAC on close on unprivileged BE3 VFs
be2net: fix status check in be_cmd_pmac_add()
be2net: Increase skb headroom size to 256 bytes
be2net: Add DEVSEC privilege to SET_HSW_CONFIG command.
be2net: do not call napi_hash_del()
be2net: Enable VF link state setting for BE3
be2net: Fix TX stats for TSO packets
be2net: Update Copyright string in be_hw.h
be2net: NCSI FW section should be properly updated with ethtool for BE3
be2net: Provide an alternate way to read pf_num for BEx chips
be2net: mark symbols static where possible
...
Chuck Anderson [Thu, 9 Mar 2017 07:36:20 +0000 (23:36 -0800)]
Merge branch 'topic/uek-4.1/drivers' of git://ca-git.us.oracle.com/linux-uek into uek/uek-4.1
* topic/uek-4.1/drivers: (289 commits)
Input: vmmouse - remove port reservation
Input: vmmouse - fix absolute device registration
bnxt_en: use eth_hw_addr_random()
bnxt_en: fix pci cleanup in bnxt_init_one() failure path
bnxt_en: Fix NULL pointer dereference in a failure path during open.
bnxt_en: Reject driver probe against all bridge devices
bnxt_en: Added PCI IDs for BCM57452 and BCM57454 ASICs
bnxt_en: Fix bnxt_setup_tc() error message.
bnxt_en: Print FEC settings as part of the linkup dmesg.
bnxt_en: Do not setup PHY unless driving a single PF.
bnxt_en: Add hardware NTUPLE filter for encapsulated packets.
bnxt_en: Allow NETIF_F_NTUPLE to be enabled on VFs.
bnxt_en: Fix ethtool -l pre-set max combined channel.
bnxt_en: Retry failed NVM_INSTALL_UPDATE with defragmentation flag.
bnxt_en: Update to firmware interface spec 1.7.0.
bnxt_en: Refactor tx completion path.
bnxt_en: Add a set of TX rings to support XDP.
bnxt_en: Add tx ring mapping logic.
bnxt_en: Centralize logic to reserve rings.
bnxt_en: Use event bit map in RX path.
...
Chuck Anderson [Thu, 9 Mar 2017 07:34:05 +0000 (23:34 -0800)]
Merge branch topic/uek-4.1/upstream-cherry-picks of git://ca-git.us.oracle.com/linux-uek into uek/uek-4.1
* topic/uek-4.1/upstream-cherry-picks:
Btrfs: fix crash on fsync when using overlayfs v4
vfio/pci: Hide broken INTx support from user
crypto: cryptd - Assign statesize properly
crypto: ghash-clmulni - Fix load failure
USB: digi_acceleport: do sanity checking for the number of ports
ksplice: add sysctls for determining Ksplice features.
signal: protect SIGNAL_UNKILLABLE from unintentional clearing.
Chuck Anderson [Thu, 9 Mar 2017 04:24:57 +0000 (20:24 -0800)]
Merge branch topic/uek-4.1/sparc of git://ca-git.us.oracle.com/linux-uek into uek/uek-4.1
* topic/uek-4.1/sparc: (32 commits)
sparc: fix kernel panic caused by vio handshake
sparc64: Add sensible read values for /proc/<pid>/sparc_adi
sparc64: Add ability to set the mcde state for a process
sparc64: Add proc files specific to ADI
sparc64: add mcd_on_by_default
Revert "sparc: fix intermittent LDom hang waiting for vdc_port_up"
sparc64: Add support for ADI (Application Data Integrity)
sparc64: Add support for ADI register fields, ASIs and traps
mm: Add functions to support extra actions on swap in/out
signals, sparc: Add signal codes for ADI violations
sparc64: shut down to OBP correctly
sparc64: fix for user probes in high memory
sparc64: Use online cpus instead of present cpus during hotplug.
sparc64: Update cpumaps correctly during hotplug.
sparc: fix intermittent LDom hang waiting for vdc_port_up
arch/sparc: Add a dedicated clear_page and clear_user_page for M7
sparc64: perf: Enable dynamic tracepoints when using perf probe
SPARC64: UEK4 LDOMS DOMAIN SERVICES UPDATE 7
arch/sparc: Fix indexing msi_msiqid_table and msi_irq_table
arch/sparc: Clear msi_msiqid_table during teardown
...
Chuck Anderson [Thu, 9 Mar 2017 04:16:08 +0000 (20:16 -0800)]
Merge branch 'topic/uek-4.1/drivers' of git://ca-git.us.oracle.com/linux-uek into uek/uek-4.1
* topic/uek-4.1/drivers: (200 commits)
scsi: megaraid-sas: request irqs later
scsi: megaraid_sas: add in missing white spaces in error messages text
scsi: megaraid_sas: fix macro MEGASAS_IS_LOGICAL to avoid regression
scsi: megaraid_sas: driver version upgrade
scsi: megaraid_sas: Do not set MPI2_TYPE_CUDA for JBOD FP path for FW which does not support JBOD sequence map
scsi: megaraid_sas: Send SYNCHRONIZE_CACHE for VD to firmware
scsi: megaraid_sas: Do not fire DCMDs during PCI shutdown/detach
scsi: megaraid_sas: Send correct PhysArm to FW for R1 VD downgrade
scsi: megaraid_sas: For SRIOV enabled firmware, ensure VF driver waits for 30secs before reset
scsi: megaraid_sas: Fix data integrity failure for JBOD (passthrough) devices
scsi: megaraid_sas: clean function declarations in megaraid_sas_base.c up
scsi: megaraid_sas: add in missing white space in error message text
scsi: megaraid_sas: Fix the search of first memory bar
scsi: megaraid_sas: Use memdup_user() rather than duplicating its implementation
megaraid_sas: Fix probing cards without io port
megaraid_sas: Do not fire MR_DCMD_PD_LIST_QUERY to controllers which do not support it
megaraid_sas: Downgrade two success messages to info
megaraid_sas: driver version upgrade
megaraid_sas: task management code optimizations
megaraid_sas: call ISR function to clean up pending replies in OCR path
...
Chuck Anderson [Thu, 9 Mar 2017 04:00:03 +0000 (20:00 -0800)]
Merge branch topic/uek-4.1/upstream-cherry-picks of git://ca-git.us.oracle.com/linux-uek into uek/uek-4.1
* topic/uek-4.1/upstream-cherry-picks: (280 commits)
dm btree: fix bufio buffer leaks in dm_btree_del() error path
ipv4: keep skb->dst around in presence of IP options
ip6_gre: fix ip6gre_err() invalid reads
watchdog: hpwdt: changed maintainer information
watchdog: hpwdt: add support for iLO5
watchdog: hpwdt: remove email address from doc
watchdog: hpwdt: Adjust documentation to match latest kernel module parameters.
hpwdt: use nmi_panic() when kernel panics in NMI handler
panic: change nmi_panic from macro to function
watchdog/hpwdt: Fix build on certain configs
watchdog/hpwdt: Create stack frame in asminline_call()
x86/asm: Add C versions of frame pointer macros
x86/asm: Clean up frame pointer macros
watchdog: hpwdt: HP rebranding
panic, x86: Allow CPUs to save registers even if looping in NMI context
watchdog: hpwdt: Add support for WDIOC_SETOPTIONS
kvm: fix page struct leak in handle_vmon
bnx2: use READ_ONCE() instead of barrier()
bnx2: Wait for in-flight DMA to complete at probe stage
bnx2: fix locking when netconsole is used
...
Thomas Tai [Mon, 13 Feb 2017 14:50:05 +0000 (06:50 -0800)]
sparc: fix kernel panic caused by vio handshake
During hours long reboot test, the primary prints out multiple TX trigger
errors followed by a VIO handshake panic. The TX trigger error happens
because the primary ldmvsw detects that the ldc channel is down. In this
situation, the ldc operation is aborted, the tx and rx queue are then
flushed. The problem is that the rx queue may contain a LDC_EVENT_RESET
sent by the guest. It causes the primary to think that the ldc channel
is not in reset state. When the guest comes up again, the handshake is
out of sequence and thus causes handshake panic.
The TX trigger error would not have happened if the LDC_EVENT_RESET was
received before the TX checked the ldc link state. This is the reason
why the panic happens intermittently.
This patch checks for the connection reset and changes the ldc state to
reset. The reset logic is taken from existing vnet_event_napi() ldc_ctrl:
code path.
Khalid Aziz [Fri, 2 Dec 2016 19:45:37 +0000 (12:45 -0700)]
sparc64: Add sensible read values for /proc/<pid>/sparc_adi
This patch makes value read from /proc/<pid>/sparc_adi consistent
across platforms that support ADi and ones that do not. When ADI is
not available for a process either due to process being an anonymous
process on an ADI-capable platform or the process is running on a
non-ADI platform, a read from /proc/<pid>/sparc_adi always reads a
value of -1. This patch updates the documentation file as well with
the values for sparc_adi proc file.
Eric Snowberg [Thu, 17 Nov 2016 21:27:36 +0000 (13:27 -0800)]
sparc64: Add ability to set the mcde state for a process
turn off version checking (PSTATE.mcde) to avoid tripping over ADI
versions in flux. This has been partially remedied by using non-faulting
loads.
However, there is still a need to turn off PSTATE.mcde in memory dump
functions. This is to determine if an address is readable. If the
address is unreadable, the dump shows the memory contents as "********"
instead of a 4-byte hex value.
Signed-off-by: Eric Snowberg <eric.snowberg@oracle.com> Reviewed-by: Khalid Aziz <khalid.aziz@oracle.com> Signed-off-by: Allen Pais <allen.pais@oracle.com>
Chuck Anderson [Sat, 18 Feb 2017 06:15:35 +0000 (22:15 -0800)]
sparc64: add mcd_on_by_default
Add the global variable mcd_on_by_default and support for the kernel boot arg
"mcd_on_by_default" which causes mcd_on_by_default = 1 if the kernel is
adi_capable().
Based on the code in commit:
sparc64: Enable Application Data Integrity for m7 and newer processors
Required by commit:
sparc64: Add proc files specific to ADI
Orabug: 22713162 Signed-off-by: Chuck Anderson <chuck.anderson@oracle.com>
Khalid Aziz [Wed, 15 Feb 2017 19:57:59 +0000 (12:57 -0700)]
sparc64: Add support for ADI (Application Data Integrity)
ADI is a new feature supported on SPARC M7 and newer processors to allow
hardware to catch rogue accesses to memory. ADI is supported for data
fetches only and not instruction fetches. An app can enable ADI on its
data pages, set version tags on them and use versioned addresses to
access the data pages. Upper bits of the address contain the version
tag. On M7 processors, upper four bits (bits 63-60) contain the version
tag. If a rogue app attempts to access ADI enabled data pages, its
access is blocked and processor generates an exception. Please see
Documentation/sparc/adi.txt for further details.
This patch extends mprotect to enable ADI (TSTATE.mcde), enable/disable
MCD (Memory Corruption Detection) on selected memory ranges, enable
TTE.mcd in PTEs, return ADI parameters to userspace and save/restore ADI
version tags on page swap out/in or migration. It also adds handlers for
traps related to MCD. ADI is not enabled by default for any task. A task
must explicitly enable ADI on a memory range and set version tag for ADI
to be effective for the task.
This initial implementation supports saving and restoring one tag per
page. A page must use same version tag across the entire page for the
tag to survive swap and migration. Swap swupport infrastructure in this
patch allows for this capability to be expanded to store/restore more
than one tag per page in future.
This is a backport of patch sent upstream and brings UEK code closer to
upstream patch v6.