preempt_disable/enable surrounds every call to blk_mq_run_hw_queue,
except the one in blk-flush.c. In fact that one is always asynchronous,
and it does not need smp_processor_id().
We can do the same for all other calls, avoiding preempt_disable when
async is true. This avoids peppering blk-mq.c with preemption-disabled
regions.
Cc: Jens Axboe <[email protected]>
Cc: Thomas Gleixner <[email protected]>
Reported-by: Clark Williams <[email protected]>
Tested-by: Clark Williams <[email protected]>
Signed-off-by: Paolo Bonzini <[email protected]>
Signed-off-by: Jens Axboe <[email protected]>
As obj->map_and_fenceable computation has changed to only be set when
the object is bound inside the global GTT (and is suitable aligned to a
fence region) we need to accommodate those changes when the tiling is
adjusted. The easiest solution is to unbind from the global GTT if we
are currently fenceable, but will not be after the tiling change.
The bug has been exposed by
commit f8fcadba218fe6d23b2e353fea1cf0a4be4c9454
Author: Chris Wilson <[email protected]>
Date: Fri Oct 31 13:53:52 2014 +0000
drm/i915: Only mark as map-and-fenceable when bound into the GGTT
which tried to fix an oversight from
commit e6a844687c
Author: Chris Wilson <[email protected]>
Date: Mon Aug 11 12:00:12 2014 +0200
drm/i915: Force CPU relocations if not GTT mapped
which changed the handling of obj->map_and_fenceable.
Note that the alignment check is a vestige from our attempts to reduce
the alignment requirements of tiled but unfenced buffers on
gen2/3. Also, that was when unbinding from the GTT meant UC writes and
clflushing, so we went to great pains to avoid such.
That leaves the actual bug of setting map_and_fenceable to true if we're
not bound to ggtt, which violates the change introduced in the above
patch. Unbinding in that case really looks like the simplest and safest
option, we have to do it anyway.
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=85896
Testcase: igt/gem_concurrent_blit/gttX*
Tested-by: [email protected]
Signed-off-by: Chris Wilson <[email protected]>
Reviewed-by: Daniel Vetter <[email protected]>
Tested-by: Valtteri Rantala <[email protected]>
[Jani: amend commit message per input from Daniel and bisect result from
Valtteri]
Signed-off-by: Jani Nikula <[email protected]>
Currently if the user passes an invalid value on the kernel command line
then the kernel will crash during argument parsing. On most systems this
is very hard to debug because the console hasn't been initialized yet.
This is a regression due to commit 51e158c12a ("param: hand arguments
after -- straight to init") which, in response to the systemd debug
controversy, made it possible to explicitly pass arguments to init. To
achieve this parse_args() was extended from simply returning an error
code to returning a pointer. Regretably the new init args logic does not
perform a proper validity check on the pointer resulting in a crash.
This patch fixes the validity check. Should the check fail then no arguments
will be passed to init. This is reasonable and matches how the kernel treats
its own arguments (i.e. no error recovery).
Signed-off-by: Daniel Thompson <[email protected]>
Cc: [email protected]
Signed-off-by: Rusty Russell <[email protected]>
Make hp_accel dependent on SERIO_I8042 in the Kconfig because since commit
a4c724d072 ('platform: hp_accel: add a i8042
filter to remove HPQ6000 data from kb bus stream') hp_accel includes i8042.h
and serio.h.
Reported-by: Jim Davis <[email protected]>
Signed-off-by: Giedrius Statkevičius <[email protected]>
Signed-off-by: Darren Hart <[email protected]>
Fix an error path in SCSI_IOCTL_SEND_COMMAND that calls
blk_put_request(rq) on an invalid IS_ERR(rq) pointer.
Fixes: a492f07545 ("block,scsi: fixup blk_get_request dead queue scenarios")
Signed-off-by: Tony Battersby <[email protected]>
Signed-off-by: Jens Axboe <[email protected]>
For PIN_OUTPUT_PULLUP and PIN_OUTPUT_PULLDOWN we must not set the
PULL_DIS bit which disables the PULLs.
PULL_ENA is a 0 and using it in an OR operation is a NOP, so don't
use it in the PIN_OUTPUT_PULLUP/DOWN macros.
Fixes: 23d9cec07c ("pinctrl: dra: dt-bindings: Fix pull enable/disable")
Signed-off-by: Roger Quadros <[email protected]>
Acked-by: Nishanth Menon <[email protected]>
Signed-off-by: Tony Lindgren <[email protected]>
If the read loop in trace_buffers_splice_read() keeps failing due to
memory allocation failures without reading even a single page then this
function will keep busy looping.
Remove the risk for that by exiting the function if memory allocation
failures are seen.
Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: Rabin Vincent <[email protected]>
Signed-off-by: Steven Rostedt <[email protected]>
On a !PREEMPT kernel, attempting to use trace-cmd results in a soft
lockup:
# trace-cmd record -e raw_syscalls:* -F false
NMI watchdog: BUG: soft lockup - CPU#0 stuck for 22s! [trace-cmd:61]
...
Call Trace:
[<ffffffff8105b580>] ? __wake_up_common+0x90/0x90
[<ffffffff81092e25>] wait_on_pipe+0x35/0x40
[<ffffffff810936e3>] tracing_buffers_splice_read+0x2e3/0x3c0
[<ffffffff81093300>] ? tracing_stats_read+0x2a0/0x2a0
[<ffffffff812d10ab>] ? _raw_spin_unlock+0x2b/0x40
[<ffffffff810dc87b>] ? do_read_fault+0x21b/0x290
[<ffffffff810de56a>] ? handle_mm_fault+0x2ba/0xbd0
[<ffffffff81095c80>] ? trace_event_buffer_lock_reserve+0x40/0x80
[<ffffffff810951e2>] ? trace_buffer_lock_reserve+0x22/0x60
[<ffffffff81095c80>] ? trace_event_buffer_lock_reserve+0x40/0x80
[<ffffffff8112415d>] do_splice_to+0x6d/0x90
[<ffffffff81126971>] SyS_splice+0x7c1/0x800
[<ffffffff812d1edd>] tracesys_phase2+0xd3/0xd8
The problem is this: tracing_buffers_splice_read() calls
ring_buffer_wait() to wait for data in the ring buffers. The buffers
are not empty so ring_buffer_wait() returns immediately. But
tracing_buffers_splice_read() calls ring_buffer_read_page() with full=1,
meaning it only wants to read a full page. When the full page is not
available, tracing_buffers_splice_read() tries to wait again with
ring_buffer_wait(), which again returns immediately, and so on.
Fix this by adding a "full" argument to ring_buffer_wait() which will
make ring_buffer_wait() wait until the writer has left the reader's
page, i.e. until full-page reads will succeed.
Link: http://lkml.kernel.org/r/[email protected]
Cc: [email protected] # 3.16+
Fixes: b1169cc69b ("tracing: Remove mock up poll wait function")
Signed-off-by: Rabin Vincent <[email protected]>
Signed-off-by: Steven Rostedt <[email protected]>
Switch over the msgctl, shmat, shmctl and semtimedop syscalls to use the compat
layer. The problem was found with the debian procenv package, which called
shmctl(0, SHM_INFO, &info);
in which the shmctl syscall then overwrote parts of the surrounding areas on
the stack on which the info variable was stored and thus lead to a segfault
later on.
Additionally fix the definition of struct shminfo64 to use unsigned longs like
the other architectures. This has no impact on userspace since we only have a
32bit userspace up to now.
Signed-off-by: Helge Deller <[email protected]>
Cc: John David Anglin <[email protected]>
Cc: <[email protected]> # v3.10+
DRA7(including AM5x) and AM47x series are handled under OMAP umbrella.
These SoC support and dts have been added since 3.14 kernel and Pull
requests for these have come in from OMAP till date.
So just ensure that get_maintainers can pick up this list as well.
Cc: [email protected]
Cc: [email protected]
Signed-off-by: Nishanth Menon <[email protected]>
Acked-by: Benoît Cousson <[email protected]>
Signed-off-by: Tony Lindgren <[email protected]>
These files are very important to the healt
of the OMAP architecture, specially when it
comes to PM support which currently we have
working for at least OMAP3 and we'd like
to know about any changes being made to our
PMICs and IRQ controllers.
Signed-off-by: Felipe Balbi <[email protected]>
Signed-off-by: Tony Lindgren <[email protected]>
DCDC3 supplies voltage to DDR. Fix DCDC3 volatge to 1.5V which is the reset
value. Programming to a non-reset value while executing from DDR will result
in random hangs.
Signed-off-by: Keerthy <[email protected]>
Signed-off-by: Tony Lindgren <[email protected]>
DCDC3 supplies voltage to DDR. Fix DCDC3 volatge to 1.5V which is the reset
value. Programming to a non-reset value while executing from DDR will result
in random hangs.
Signed-off-by: Keerthy <[email protected]>
Signed-off-by: Tony Lindgren <[email protected]>
DCDC3 supplies voltage to DDR. Fix DCDC3 volatge to 1.5V which is the reset
value. Programming to a non-reset value while executing from DDR will result
in random hangs.
Signed-off-by: Keerthy <[email protected]>
Signed-off-by: Tony Lindgren <[email protected]>
The walk code was using a 'ro_spine' to hold it's locked btree nodes.
But this data structure is designed for the rolling lock scheme, and
as such automatically unlocks blocks that are two steps up the call
chain. This is not suitable for the simple recursive walk algorithm,
which retraces its steps.
This code is only used by the persistent array code, which in turn is
only used by dm-cache. In order to trigger it you need to have a
mapping tree that is more than 2 levels deep; which equates to 8-16
million cache blocks. For instance a 4T ssd with a very small block
size of 32k only just triggers this bug.
The fix just places the locked blocks on the stack, and stops using
the ro_spine altogether.
Signed-off-by: Joe Thornber <[email protected]>
Signed-off-by: Mike Snitzer <[email protected]>
Cc: [email protected]
Unlike CEE, IEEE has a bespoke app delete call and does not rely on priority
for app deletion
Fixes : 2376c879b8 ('cxgb4 : Improve handling of DCB negotiation or loss
thereof')
Signed-off-by: Anish Bhatt <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
When doing GRO processing for UDP tunnels, we never add
SKB_GSO_UDP_TUNNEL to gso_type - only the type of the inner protocol
is added (such as SKB_GSO_TCPV4). The result is that if the packet is
later resegmented we will do GSO but not treat it as a tunnel. This
results in UDP fragmentation of the outer header instead of (i.e.) TCP
segmentation of the inner header as was originally on the wire.
Signed-off-by: Jesse Gross <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
Hariprasad Shenai says:
====================
cxgb4/cxgb4vf: Misc. fixes for cxgb4vf
For T5 use Packing and Padding Boundaries for SGE DMA transfers, move
fl_starve_thres to adpater structure, since they are different for each
adapter. The cxgb4vf driver's Free List Starvation Threshold needs to be larger
than the SGE's Egress Congestion Threshold or we'll end up in a mutual stall
where the driver waits for Ingress Packets to drive replacing Free List
Pointers and the SGE waits for Free List Pointers before pushing Ingress
Packets to the host.
The patches series is created against 'net' tree.
And includes patches on cxgb4 and cxgb4vf driver.
We have included all the maintainers of respective drivers. Kindly review the
change and let us know in case of any review comments.
====================
Signed-off-by: David S. Miller <[email protected]>
Free List Starvation Threshold needs to be larger than the SGE's Egress
Congestion Threshold or we'll end up in a mutual stall where the driver waits
for Ingress Packets to drive replacing Free List Pointers and the SGE waits for
Free List Pointers before pushing Ingress Packets to the host.
Based on original work by Casey Leedom <[email protected]>
Signed-off-by: Hariprasad Shenai <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
T5 introduces the ability to have separate Packing and Padding Boundaries
for SGE DMA transfers from the chip to Host Memory. This change set takes
advantage of that to set up a smaller Padding Boundary to conserve PCI Link
and Memory Bandwidth with T5.
Signed-off-by: Hariprasad Shenai <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
Move fl_starv_thres into adapter->sge data structure since it
_could_ be different from adapter to adapter. Also move other per-adapter
SGE values which had been treated as driver globals into adapter->sge.
Based on original work by Casey Leedom <[email protected]>
Signed-off-by: Hariprasad Shenai <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
A connection timeout affects all volumes of a resource!
Under the following conditions:
A resource with multiple volumes
AND
ko-count >=1
AND
a write request triggers the timeout (ko-count * timeout)
DRBD's internal state gets confused. That in turn may
lead to very miss leading follow up failures. E.g.
"BUG: scheduling while atomic"
CC: [email protected] # v3.17
Signed-off-by: Philipp Reisner <[email protected]>
Signed-off-by: Lars Ellenberg <[email protected]>
Signed-off-by: Jens Axboe <[email protected]>
This was not noticed for many years. Affects operation if
md raid is used a backing device for DRBD.
CC: [email protected] # v3.2+
Signed-off-by: Philipp Reisner <[email protected]>
Signed-off-by: Lars Ellenberg <[email protected]>
Signed-off-by: Jens Axboe <[email protected]>
If for some reason DRBD resync was the only activity on a backend
device, drbd_rs_c_min_rate_throttle() would mistakenly decide that it is
still initialization time, and keep throttling the resync.
This patch explicitly initializes ->rs_last_events to the current
backend event counters, and drops the rs_last_events == 0 from the
throttle condition.
Reported-by: Mikhail Sugakov <[email protected]>
Signed-off-by: Philipp Reisner <[email protected]>
Signed-off-by: Lars Ellenberg <[email protected]>
Signed-off-by: Jens Axboe <[email protected]>
Symptoms:
If DRBD was "cleanly shut down" (all in sync, both Secondary before
disconnect, identical data generation uuids), and then one side was
promoted *during* the next connection handshake, the role change
could confuse the handshake.
The Primary would get stuck in WFBitmapS, the Secondary would log
unexpected cstate (Connected) in receive_bitmap
and get stuck in WFBitmapT.
Fix:
The test in is_valid_soft_transition wrong. It works because
the not allowed actions (promote/attach) do not touch the
cstate. The previous condition failed to demand a cstate change
in one clause.
In order to avoid deadlocks give up the state_mutex while waiting
for the transient state to go away.
Conflicts:
drbd/drbd_state.c
drbd/drbd_state.h
drbd/drbd_wrappers.h
Signed-off-by: Philipp Reisner <[email protected]>
Signed-off-by: Lars Ellenberg <[email protected]>
Signed-off-by: Jens Axboe <[email protected]>
Avoid generic netlink calls in other parts of the code base.
Signed-off-by: Philipp Reisner <[email protected]>
Signed-off-by: Lars Ellenberg <[email protected]>
Signed-off-by: Jens Axboe <[email protected]>
drivers/block/nvme-core.c:865:5: sparse: symbol '__nvme_submit_admin_cmd' was not declared. Should it be static?
Signed-off-by: Fengguang Wu <[email protected]>
Signed-off-by: Jens Axboe <[email protected]>
* access the dis_ucode_ldr chicken bit properly
* fix patch stashing on AMD on 32-bit
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Merge tag 'microcode_fixes_for_3.18' of git://git.kernel.org/pub/scm/linux/kernel/git/bp/bp into x86/urgent
Pull two fixes for early microcode loader on 32-bit from Borislav Petkov:
- access the dis_ucode_ldr chicken bit properly
- fix patch stashing on AMD on 32-bit
Signed-off-by: Ingo Molnar <[email protected]>
Commit e7cd1d1eb1 ("mfd: twl4030-power: Add generic reset
configuration") enabled configuring the PM features for twl4030.
This caused poweroff command to fail on devices that have the
BCI charger on twl4030 wired, or have power wired for VBUS.
Instead of powering off, the device reboots. This is because
voltage is detected on charger or VBUS with the default bits
enabled for the power transition registers.
To fix the issue, let's just clear VBUS and CHG bits as we want
poweroff command to keep the system powered off.
Fixes: e7cd1d1eb1 ("mfd: twl4030-power: Add generic reset configuration")
Cc: [email protected] # v3.16+
Reported-by: Russell King <[email protected]>
Signed-off-by: Tony Lindgren <[email protected]>
Signed-off-by: Lee Jones <[email protected]>
All interrupts coming from MUIC were ignored because interrupt source
register was masked.
The Maxim 77693 has a "interrupt source" - a separate register and interrupts
which give information about PMIC block triggering the individual
interrupt (charger, topsys, MUIC, flash LED).
By default bootloader could initialize this register to "mask all"
value. In such case (observed on Trats2 board) MUIC interrupts won't be
generated regardless of their mask status. Regmap irq chip was unmasking
individual MUIC interrupts but the source was masked
Before introducing regmap irq chip this interrupt source was unmasked,
read and acked. Reading and acking is not necessary but unmasking is.
Fixes: 342d669c1e ("mfd: max77693: Handle IRQs using regmap")
Cc: <[email protected]>
Signed-off-by: Krzysztof Kozlowski <[email protected]>
Reviewed-by: Chanwoo Choi <[email protected]>
Signed-off-by: Lee Jones <[email protected]>
Interrupts coming from Maxim77693 MUIC block (MicroUSB Interface
Controller) were not handled at all because wrong regmap was used for
MUIC's regmap_irq_chip.
The MUIC component of Maxim 77693 uses different I2C address thus second
regmap is created and used by max77693 extcon driver. The registers for
MUIC interrupts are also in that block and should be handled by that
second regmap.
However the regmap irq chip for MUIC was configured with default regmap
which could not read MUIC registers.
Fixes: 342d669c1e ("mfd: max77693: Handle IRQs using regmap")
Cc: <[email protected]>
Signed-off-by: Krzysztof Kozlowski <[email protected]>
Reviewed-by: Chanwoo Choi <[email protected]>
Signed-off-by: Lee Jones <[email protected]>
Allow more than one viperboard to be connected by registering with
PLATFORM_DEVID_AUTO instead of PLATFORM_DEVID_NONE.
The subdevices are currently registered with PLATFORM_DEVID_NONE, which
will cause a name collision on the platform bus when a second viperboard
is plugged in:
viperboard 1-2.4:1.0: version 0.00 found at bus 001 address 004
------------[ cut here ]------------
WARNING: CPU: 0 PID: 181 at /home/johan/work/omicron/src/linux/fs/sysfs/dir.c:31 sysfs_warn_dup+0x74/0x84()
sysfs: cannot create duplicate filename '/bus/platform/devices/viperboard-gpio'
Modules linked in: i2c_viperboard viperboard netconsole [last unloaded: viperboard]
CPU: 0 PID: 181 Comm: bash Tainted: G W 3.17.0-rc6 #1
[<c0016bf4>] (unwind_backtrace) from [<c0013860>] (show_stack+0x20/0x24)
[<c0013860>] (show_stack) from [<c04305f8>] (dump_stack+0x24/0x28)
[<c04305f8>] (dump_stack) from [<c0040fb4>] (warn_slowpath_common+0x80/0x98)
[<c0040fb4>] (warn_slowpath_common) from [<c004100c>] (warn_slowpath_fmt+0x40/0x48)
[<c004100c>] (warn_slowpath_fmt) from [<c016f1bc>] (sysfs_warn_dup+0x74/0x84)
[<c016f1bc>] (sysfs_warn_dup) from [<c016f548>] (sysfs_do_create_link_sd.isra.2+0xcc/0xd0)
[<c016f548>] (sysfs_do_create_link_sd.isra.2) from [<c016f588>] (sysfs_create_link+0x3c/0x48)
[<c016f588>] (sysfs_create_link) from [<c02867ec>] (bus_add_device+0x12c/0x1e0)
[<c02867ec>] (bus_add_device) from [<c0284820>] (device_add+0x410/0x584)
[<c0284820>] (device_add) from [<c0289440>] (platform_device_add+0xd8/0x26c)
[<c0289440>] (platform_device_add) from [<c02a5ae4>] (mfd_add_device+0x240/0x344)
[<c02a5ae4>] (mfd_add_device) from [<c02a5ce0>] (mfd_add_devices+0xb8/0x110)
[<c02a5ce0>] (mfd_add_devices) from [<bf00d1c8>] (vprbrd_probe+0x160/0x1b0 [viperboard])
[<bf00d1c8>] (vprbrd_probe [viperboard]) from [<c030c000>] (usb_probe_interface+0x1bc/0x2a8)
[<c030c000>] (usb_probe_interface) from [<c028768c>] (driver_probe_device+0x14c/0x3ac)
[<c028768c>] (driver_probe_device) from [<c02879e4>] (__driver_attach+0xa4/0xa8)
[<c02879e4>] (__driver_attach) from [<c0285698>] (bus_for_each_dev+0x70/0xa4)
[<c0285698>] (bus_for_each_dev) from [<c0287030>] (driver_attach+0x2c/0x30)
[<c0287030>] (driver_attach) from [<c030a288>] (usb_store_new_id+0x170/0x1ac)
[<c030a288>] (usb_store_new_id) from [<c030a2f8>] (new_id_store+0x34/0x3c)
[<c030a2f8>] (new_id_store) from [<c02853ec>] (drv_attr_store+0x30/0x3c)
[<c02853ec>] (drv_attr_store) from [<c016eaa8>] (sysfs_kf_write+0x5c/0x60)
[<c016eaa8>] (sysfs_kf_write) from [<c016dc68>] (kernfs_fop_write+0xd4/0x194)
[<c016dc68>] (kernfs_fop_write) from [<c010fe40>] (vfs_write+0xb4/0x1c0)
[<c010fe40>] (vfs_write) from [<c01104a8>] (SyS_write+0x4c/0xa0)
[<c01104a8>] (SyS_write) from [<c000f900>] (ret_fast_syscall+0x0/0x48)
---[ end trace 98e8603c22d65817 ]---
viperboard 1-2.4:1.0: Failed to add mfd devices to core.
viperboard: probe of 1-2.4:1.0 failed with error -17
Signed-off-by: Johan Hovold <[email protected]>
Signed-off-by: Lee Jones <[email protected]>
rtsx_pci_power_off() is called only from rtsx_pci_suspend(), which isn't
built when PM is disabled.
Signed-off-by: Thierry Reding <[email protected]>
Signed-off-by: Lee Jones <[email protected]>
The least significat byte of the GPIO value read register
on the STMPE24xx series is on addres 0xA4 not 0xA5. Correct
against datasheet and tested on the STMPE2401 hardware.
Signed-off-by: Linus Walleij <[email protected]>
Signed-off-by: Lee Jones <[email protected]>
Function pci_enable_msix_range() may return negative values for error
conditions. So it's a bug by checking (pci_enable_msix_range() != 0)
for success and causes failure to megaraid driver when MSI is disabled.
[ 16.487267] megaraid_sas 0000:02:00.0: Controller type: iMR
[ 16.487275] genirq: Flags mismatch irq 0. 00000000 (megasas) vs. 00015a00 (tii
mer)
[ 16.487347] megasas: Failed to register IRQ for vector 0.
Fixes: 8ae80ed173 "megaraid: Use pci_enable_msix_range() instead of pci_enable_msix()"
Signed-off-by: Jiang Liu <[email protected]>
Acked-by: Sumit Saxena <[email protected]>
Signed-off-by: Christoph Hellwig <[email protected]>
Cc: <[email protected]> # 3.17
Connection retries were not being cleaned up correctly if they failed as a
result of link down. Applies on top of drivers-for-3.18.
Signed-off-by: Anish Bhatt <[email protected]>
Signed-off-by: Karen Xie <[email protected]>
Signed-off-by: Christoph Hellwig <[email protected]>
This patch fixes an issue with multipath ipr SAS devices which require a
start unit command to be issued following an adapter reset. Without this
patch, paths get marked failed following an adapter reset and since the
error handler never gets invoked to issue the start unit, the paths are
never recovered. Returning FAILED for this case ensures the error
handler wakes up to issue the start unit.
Signed-off-by: Brian King <[email protected]>
Tested-by: Wen Xiong <[email protected]>
Reviewed-by: Hannes Reinecke <[email protected]>
Signed-off-by: Christoph Hellwig <[email protected]>
Multipath devices using the TUR path checker need to see the sense
code for a failed TUR command in their device handler. Since commit
14216561e1 we always return success for mid
layer issued TUR commands before calling the device handler, which
stopped the TUR path checker from working.
Move the call to the device handler check sense method before the early
return for TUR commands to give the device handler a chance to intercept
them.
Signed-off-by: Christoph Hellwig <[email protected]>
Tested-by: Wen Xiong <[email protected]>
Reviewed-by: Hannes Reinecke <[email protected]>
Setups that use the blk-mq I/O path can lock up if a host with a single
device that has its door locked enters EH. Make sure to only send the
command to re-lock the door to devices that actually were reset and thus
might have lost their state. Otherwise the EH code might be get blocked
on blk_get_request as all requests for non-reset devices might be in use.
Cc: [email protected]
Signed-off-by: Christoph Hellwig <[email protected]>
Reported-by: Meelis Roos <[email protected]>
Tested-by: Meelis Roos <[email protected]>
Reviewed-by: Martin K. Petersen <[email protected]>
Save the patch while we're running on the BSP instead of later, before
the initrd has been jettisoned. More importantly, on 32-bit we need to
access the physical address instead of the virtual.
This way we actually do find it on the APs instead of having to go
through the initrd each time.
Tested-by: Richard Hendershot <[email protected]>
Fixes: 5335ba5cf4 ("x86, microcode, AMD: Fix early ucode loading")
Cc: <[email protected]> # v3.13+
Signed-off-by: Borislav Petkov <[email protected]>
