There is a bug in iommu_context_addr() which will always use
the lower context table, even when the upper context table
needs to be used. Fix this issue.
Fixes: 03ecc32c52 ("iommu/vt-d: support extended root and context entries")
Reported-by: Xiao, Nan <nan.xiao@hp.com>
Signed-off-by: Joerg Roedel <jroedel@suse.de>
According to "Intel Virtualization Technology for Directed
I/O" specification, DRHD stands for "DMA Remapping Hardware
Unit Definition" , not "DMA Engine Reporting Structure".
Signed-off-by: Nan Xiao <nan.xiao@hp.com>
Signed-off-by: Joerg Roedel <jroedel@suse.de>
When a 'struct device_domain_info' is created as an alias
for another device, this struct will not be re-used when the
real device is encountered. Fix that to avoid duplicate
device_domain_info structures being added.
Signed-off-by: Joerg Roedel <jroedel@suse.de>
For devices without an PCI alias there will be two
device_domain_info structures added. Prevent that by
checking if the alias is different from the device.
Signed-off-by: Joerg Roedel <jroedel@suse.de>
This struct contains all necessary information for the
function already. Also handle the info->dev == NULL case
while at it.
Signed-off-by: Joerg Roedel <jroedel@suse.de>
The code in the locked section does not touch anything
protected by the dmar_global_lock. Remove it from there.
Signed-off-by: Joerg Roedel <jroedel@suse.de>
When this lock is held the device_domain_lock is also
required to make sure the device_domain_info does not vanish
while in use. So this lock can be removed as it gives no
additional protection.
Signed-off-by: Joerg Roedel <jroedel@suse.de>
Move the code to attach/detach domains to iommus and vice
verce into a single function to make sure there are no
dangling references.
Signed-off-by: Joerg Roedel <jroedel@suse.de>
This makes domain attachment more synchronous with domain
deattachment. The domain<->iommu link is released in
dmar_remove_one_dev_info.
Signed-off-by: Joerg Roedel <jroedel@suse.de>
Rename this function and the ones further down its
call-chain to domain_context_clear_*. In particular this
means:
iommu_detach_dependent_devices -> domain_context_clear
iommu_detach_dev_cb -> domain_context_clear_one_cb
iommu_detach_dev -> domain_context_clear_one
These names match a lot better with its
domain_context_mapping counterparts.
Signed-off-by: Joerg Roedel <jroedel@suse.de>
Rename the function to dmar_remove_one_dev_info to match is
name better with its dmar_insert_one_dev_info counterpart.
Signed-off-by: Joerg Roedel <jroedel@suse.de>
Rename this function to dmar_insert_one_dev_info() to match
the name better with its counter part function
domain_remove_one_dev_info().
Signed-off-by: Joerg Roedel <jroedel@suse.de>
Do the context-mapping of devices from a single place in the
call-path and clean up the other call-sites.
Signed-off-by: Joerg Roedel <jroedel@suse.de>
Just call domain_remove_one_dev_info() for all devices in
the domain instead of reimplementing the functionality.
Signed-off-by: Joerg Roedel <jroedel@suse.de>
We don't need to do an expensive search for domain-ids
anymore, as we keep track of per-iommu domain-ids.
Signed-off-by: Joerg Roedel <jroedel@suse.de>
This replaces the dmar_domain->iommu_bmp with a similar
reference count array. This allows us to keep track of how
many devices behind each iommu are attached to the domain.
This is necessary for further simplifications and
optimizations to the iommu<->domain attachment code.
Signed-off-by: Joerg Roedel <jroedel@suse.de>
This field is now obsolete because all places use the
per-iommu domain-ids. Kill the remaining uses of this field
and remove it.
Signed-off-by: Joerg Roedel <jroedel@suse.de>
There is no reason for this special handling of the
si_domain. The per-iommu domain-id can be allocated
on-demand like for any other domain. So remove the
pre-allocation code.
Signed-off-by: Joerg Roedel <jroedel@suse.de>
This function can figure out the domain-id to use itself
from the iommu_did array. This is more reliable over
different domain types and brings us one step further to
remove the domain->id field.
Signed-off-by: Joerg Roedel <jroedel@suse.de>
Get rid of the special cases for VM domains vs. non-VM
domains and simplify the code further to just handle the
hardware passthrough vs. page-table case.
Signed-off-by: Joerg Roedel <jroedel@suse.de>
There is no reason to pass the translation type through
multiple layers. It can also be determined in the
domain_context_mapping_one function directly.
Signed-off-by: Joerg Roedel <jroedel@suse.de>
The special case for VM domains is not needed, as other
domains could be attached to the iommu in the same way. So
get rid of this special case.
Signed-off-by: Joerg Roedel <jroedel@suse.de>
This array is indexed by the domain-id and contains the
pointers to the domains attached to this iommu. Modern
systems support 65536 domain ids, so that this array has a
size of 512kb, per iommu.
This is a huge waste of space, as the array is usually
sparsely populated. This patch makes the array
two-dimensional and allocates the memory for the domain
pointers on-demand.
Signed-off-by: Joerg Roedel <jroedel@suse.de>
Instead of searching in the domain array for already
allocated domain ids, keep track of them explicitly.
Signed-off-by: Joerg Roedel <jroedel@suse.de>
Debugging domain ID leakage typically requires long running tests in
order to exhaust the domain ID space or kernel instrumentation to
track the setting and clearing of bits. A couple trivial intel-iommu
specific sysfs extensions make it much easier to expose the IOMMU
capabilities and current usage.
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
Signed-off-by: Joerg Roedel <jroedel@suse.de>
iommu_load_old_irte() appears to leak the old_irte mapping after use.
Cc: Joerg Roedel <jroedel@suse.de>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: Joerg Roedel <jroedel@suse.de>
This makes sure it won't be possible to accidentally leak format
strings into iommu device names. Current name allocations are safe,
but this makes the "%s" explicit.
Signed-off-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Joerg Roedel <jroedel@suse.de>
Ted Ts'o reports that his Lenovo T540p ThinkPad crashes at boot if
attached to the docking station. This is a regression that he was able
to bisect to commit 8c7b5ccb72: "drm/i915: Use atomic helpers for
computing changed flags:"
The reason seems to be the new call to drm_atomic_helper_check_modeset()
added to intel_modeset_compute_config(), which in turn calls
update_connector_routing(), and somehow ends up picking a NULL crtc for
the connector state, causing the subsequent drm_crtc_index() to OOPS.
Daniel Vetter says that the fundamental issue seems to be confusion in
the encoder selection, and this isn't the right fix, but while he chases
down the proper fix, this at least avoids the NULL pointer dereference
and makes Ted's docking station work again.
Reported-bisected-and-tested-by: Theodore Ts'o <tytso@mit.edu>
Cc: Daniel Vetter <daniel.vetter@intel.com>
Cc: Mani Nikula <jani.nikula@linux.intel.com>
Cc: Dave Airlie <airlied@gmail.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
A set of three fixes for the ipr driver and one fairly major one for memory
leaks in the mq path of SCSI.
Signed-off-by: James Bottomley <JBottomley@Odin.com>
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Merge tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi
Pull SCSI fixes from James Bottomley:
"A set of three fixes for the ipr driver and one fairly major one for
memory leaks in the mq path of SCSI"
* tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi:
scsi: fix memory leak with scsi-mq
ipr: Fix invalid array indexing for HRRQ
ipr: Fix incorrect trace indexing
ipr: Fix locking for unit attention handling
Things are calming down nicely here w.r.t. fixes. This batch includes two
week's worth since I missed to send before -rc4.
Nothing particularly scary to point out, smaller fixes here and
there. Shortlog describes it pretty well.
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Merge tag 'armsoc-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
Pull ARM SoC fixes from Olof Johansson:
"Things are calming down nicely here w.r.t. fixes. This batch
includes two week's worth since I missed to send before -rc4.
Nothing particularly scary to point out, smaller fixes here and there.
Shortlog describes it pretty well"
* tag 'armsoc-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc:
ARM: dts: keystone: fix dt bindings to use post div register for mainpll
ARM: nomadik: disable UART0 on Nomadik boards
ARM: dts: i.MX35: Fix can support.
ARM: OMAP2+: hwmod: Fix _wait_target_ready() for hwmods without sysc
ARM: dts: add CPU OPP and regulator supply property for exynos4210
ARM: dts: Update video-phy node with syscon phandle for exynos3250
ARM: DRA7: hwmod: fix gpmc hwmod
Pull VFS fix from Al Viro:
"Spurious ENOTDIR fix"
This should fix the problems reported by Dominique Martinet and Hugh
Dickins.
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
link_path_walk(): be careful when failing with ENOTDIR
In RCU mode we might end up with dentry evicted just we check
that it's a directory. In such case we should return ECHILD
rather than ENOTDIR, so that pathwalk would be retries in non-RCU
mode.
Breakage had been introduced in commit b18825a - prior to that
we were looking at nd->inode, which had been fetched before
verifying that ->d_seq was still valid. That form of check
would only be satisfied if at some point the pathname prefix
would indeed have resolved to a non-directory. The fix consists
of checking ->d_seq after we'd run into a non-directory dentry,
and failing with ECHILD in case of mismatch.
Note that all branches since 3.12 have that problem...
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
We had a regression due to reuse of descriptor so we have reverted that.
Rest are driver fixes
at_hdmac and at_xdmac for residue, trannfer width, and channel config
pl330 final fix for dma fails and overflow issue
xgene resouce map fix
mv_xor big endian op fix
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Merge tag 'dmaengine-fix-4.2-rc5' of git://git.infradead.org/users/vkoul/slave-dma
Pull dmaengine fixes from Vinod Koul:
"We had a regression due to reuse of descriptor so we have reverted
that.
The rest are driver fixes:
- at_hdmac and at_xdmac for residue, trannfer width, and channel config
- pl330 final fix for dma fails and overflow issue
- xgene resouce map fix
- mv_xor big endian op fix"
* tag 'dmaengine-fix-4.2-rc5' of git://git.infradead.org/users/vkoul/slave-dma:
Revert "dmaengine: virt-dma: don't always free descriptor upon completion"
dmaengine: mv_xor: fix big endian operation in register mode
dmaengine: xgene-dma: Fix the resource map to handle overlapping
dmaengine: at_xdmac: fix transfer data width in at_xdmac_prep_slave_sg()
dmaengine: at_hdmac: fix residue computation
dmaengine: at_xdmac: fix bug about channel configuration
dmaengine: pl330: Really fix choppy sound because of wrong residue calculation
dmaengine: pl330: Fix overflow when reporting residue in memcpy
Pull irq fixlets from Thomas Gleixner:
"Just two updates to the maintainers file"
* 'irq-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
MAINTAINERS: Appoint Jiang and Marc as irqdomain maintainers
MAINTAINERS: Appoint Marc Zyngier as irqchips co-maintainer
Pull x86 fixes from Ingo Molnar:
"Fallout from the recent NMI fixes: make x86 LDT handling more robust.
Also some EFI fixes"
* 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/ldt: Make modify_ldt synchronous
x86/xen: Probe target addresses in set_aliased_prot() before the hypercall
x86/irq: Use the caller provided polarity setting in mp_check_pin_attr()
efi: Check for NULL efi kernel parameters
x86/efi: Use all 64 bit of efi_memmap in setup_e820()
Pull networking fixes from David Miller:
1) Must teardown SR-IOV before unregistering netdev in igb driver, from
Alex Williamson.
2) Fix ipv6 route unreachable crash in IPVS, from Alex Gartrell.
3) Default route selection in ipv4 should take the prefix length, table
ID, and TOS into account, from Julian Anastasov.
4) sch_plug must have a reset method in order to purge all buffered
packets when the qdisc is reset, likewise for sch_choke, from WANG
Cong.
5) Fix deadlock and races in slave_changelink/br_setport in bridging.
From Nikolay Aleksandrov.
6) mlx4 bug fixes (wrong index in port even propagation to VFs,
overzealous BUG_ON assertion, etc.) from Ido Shamay, Jack
Morgenstein, and Or Gerlitz.
7) Turn off klog message about SCTP userspace interface compat that
makes no sense at all, from Daniel Borkmann.
8) Fix unbounded restarts of inet frag eviction process, causing NMI
watchdog soft lockup messages, from Florian Westphal.
9) Suspend/resume fixes for r8152 from Hayes Wang.
10) Fix busy loop when MSG_WAITALL|MSG_PEEK is used in TCP recv, from
Sabrina Dubroca.
11) Fix performance regression when removing a lot of routes from the
ipv4 routing tables, from Alexander Duyck.
12) Fix device leak in AF_PACKET, from Lars Westerhoff.
13) AF_PACKET also has a header length comparison bug due to signedness,
from Alexander Drozdov.
14) Fix bug in EBPF tail call generation on x86, from Daniel Borkmann.
15) Memory leaks, TSO stats, watchdog timeout and other fixes to
thunderx driver from Sunil Goutham and Thanneeru Srinivasulu.
16) act_bpf can leak memory when replacing programs, from Daniel
Borkmann.
17) WOL packet fixes in gianfar driver, from Claudiu Manoil.
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (79 commits)
stmmac: fix missing MODULE_LICENSE in stmmac_platform
gianfar: Enable device wakeup when appropriate
gianfar: Fix suspend/resume for wol magic packet
gianfar: Fix warning when CONFIG_PM off
act_pedit: check binding before calling tcf_hash_release()
net: sk_clone_lock() should only do get_net() if the parent is not a kernel socket
net: sched: fix refcount imbalance in actions
r8152: reset device when tx timeout
r8152: add pre_reset and post_reset
qlcnic: Fix corruption while copying
act_bpf: fix memory leaks when replacing bpf programs
net: thunderx: Fix for crash while BGX teardown
net: thunderx: Add PCI driver shutdown routine
net: thunderx: Fix crash when changing rss with mutliple traffic flows
net: thunderx: Set watchdog timeout value
net: thunderx: Wakeup TXQ only if CQE_TX are processed
net: thunderx: Suppress alloc_pages() failure warnings
net: thunderx: Fix TSO packet statistic
net: thunderx: Fix memory leak when changing queue count
net: thunderx: Fix RQ_DROP miscalculation
...
Pull btrfs fixes from Chris Mason:
"Filipe fixed up a hard to trigger ENOSPC regression from our merge
window pull, and we have a few other smaller fixes"
* 'for-linus-4.2' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs:
Btrfs: fix quick exhaustion of the system array in the superblock
btrfs: its btrfs_err() instead of btrfs_error()
btrfs: Avoid NULL pointer dereference of free_extent_buffer when read_tree_block() fail
btrfs: Fix lockdep warning of btrfs_run_delayed_iputs()
This became a relative big update as it includes the collected
ASoC fixes. There are a few fixes in ASoC core side, mostly for DAPM
and the new topology API. The rest are various ASoC driver-specific
fixes, as well as the usual HD-audio and USB-audio quirks.
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Merge tag 'sound-4.2-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound
Pull sound fixes from Takashi Iwai:
"This became a relative big update as it includes the collected ASoC
fixes. There are a few fixes in ASoC core side, mostly for DAPM and
the new topology API. The rest are various ASoC driver-specific
fixes, as well as the usual HD-audio and USB-audio quirks"
* tag 'sound-4.2-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound: (29 commits)
ALSA: hda - Fix MacBook Pro 5,2 quirk
ALSA: hda - Fix race between PM ops and HDA init/probe
ALSA: usb-audio: add dB range mapping for some devices
ALSA: hda - Apply a fixup to Dell Vostro 5480
ALSA: hda - Add pin quirk for the headset mic jack detection on Dell laptop
ALSA: hda - Apply fixup for another Toshiba Satellite S50D
ALSA: fireworks: add support for AudioFire2 quirk
ALSA: hda - Fix the headset mic that will not work on Dell desktop machine
ALSA: hda - fix cs4210_spdif_automute()
ASoC: pcm1681: Fix setting de-emphasis sampling rate selection
ASoC: ssm4567: Keep TDM_BCLKS in ssm4567_set_dai_fmt
ASoC: sgtl5000: Fix up define for SGTL5000_SMALL_POP
ASoC: dapm: Don't add prefix to widget stream name
ASoC: rt5645: Check if codec is initialized in workqueue handler
ASoC: Intel: Get correct usage_count value to load firmware
ASoC: topology: Fix to add dapm mixer info
ASoC: zx: spdif: Fix devm_ioremap_resource return value check
ASoC: zx: i2s: Fix devm_ioremap_resource return value check
ASoC: mediatek: Use platform_of_node for machine drivers
ASoC: Free card DAPM context on snd_soc_instantiate_card() error path
...
Commit 50649ab149 ("stmmac: drop driver from stmmac platform code")
was a bit overzealous in removing code and dropped the MODULE_*
macro's that are still needed since stmmac_platform can be a module.
Fix this by putting the macro's remvoed in 50649ab149 back.
This fixes the following errors when used as a module:
stmmac_platform: module license 'unspecified' taints kernel.
Disabling lock debugging due to kernel taint
stmmac_platform: Unknown symbol devm_kmalloc (err 0)
stmmac_platform: Unknown symbol stmmac_suspend (err 0)
stmmac_platform: Unknown symbol platform_get_irq_byname (err 0)
stmmac_platform: Unknown symbol stmmac_dvr_remove (err 0)
stmmac_platform: Unknown symbol platform_get_resource (err 0)
stmmac_platform: Unknown symbol of_get_phy_mode (err 0)
stmmac_platform: Unknown symbol of_property_read_u32_array (err 0)
stmmac_platform: Unknown symbol of_alias_get_id (err 0)
stmmac_platform: Unknown symbol stmmac_resume (err 0)
stmmac_platform: Unknown symbol stmmac_dvr_probe (err 0)
Fixes: 50649ab149 ("stmmac: drop driver from stmmac platform code")
Reported-by: Igor Gnatenko <i.gnatenko.brain@gmail.com>
Signed-off-by: Joachim Eastwood <manabian@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Claudiu Manoil says:
====================
gianfar: wol magic packet fixes
These changes were already validated as part of FSL SDK.
Patch 2 fixes occasional wake-on magic packet failures during
traffic, probably due to incorrect traffic stop/ device halt
sequence and incorrect usage of txlock.
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Signed-off-by: David S. Miller <davem@davemloft.net>
