28 Jan, 2013
18 commits
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This callback replaces the old __eoi_ioapic_pin function
which needs a special path for interrupt remapping.Signed-off-by: Joerg Roedel
Acked-by: Sebastian Andrzej Siewior
Reviewed-by: Konrad Rzeszutek Wilk -
This call-back points to the right function for initializing
the msi_msg structure. The old code for msi_msg generation
was split up into the irq-remapped and the default case.The irq-remapped case just calls into the specific Intel or
AMD implementation when the device is behind an IOMMU.
Otherwise the default function is called.Signed-off-by: Joerg Roedel
Acked-by: Sebastian Andrzej Siewior
Reviewed-by: Konrad Rzeszutek Wilk -
This function does irq-remapping specific interrupt setup
like modifying the chip defaults.Signed-off-by: Joerg Roedel
Acked-by: Sebastian Andrzej Siewior
Reviewed-by: Konrad Rzeszutek Wilk -
The function is called unconditionally now in IO-APIC code
removing another irq_remapped() check from x86 core code.Signed-off-by: Joerg Roedel
Acked-by: Sebastian Andrzej Siewior
Reviewed-by: Konrad Rzeszutek Wilk -
This function is only called from default_ioapic_set_affinity()
which is only used when interrupt remapping is disabled
since the introduction of the set_affinity function pointer.
So the check will always evaluate as true and can be
removed.Signed-off-by: Joerg Roedel
Acked-by: Sebastian Andrzej Siewior
Reviewed-by: Konrad Rzeszutek Wilk -
Move all the code to either to the header file
asm/irq_remapping.h or to drivers/iommu/.Signed-off-by: Joerg Roedel
Acked-by: Sebastian Andrzej Siewior
Reviewed-by: Konrad Rzeszutek Wilk -
Add a data structure to store information the IOMMU driver
can use to get from a 'struct irq_cfg' to the remapping
entry.Signed-off-by: Joerg Roedel
Acked-by: Sebastian Andrzej Siewior
Reviewed-by: Konrad Rzeszutek Wilk -
Remove the last left-over from this flag from x86 code.
Signed-off-by: Joerg Roedel
Acked-by: Sebastian Andrzej Siewior
Reviewed-by: Konrad Rzeszutek Wilk -
This function is only called when irq-remapping is disabled.
Signed-off-by: Joerg Roedel
Acked-by: Sebastian Andrzej Siewior
Reviewed-by: Konrad Rzeszutek Wilk -
Move these checks to IRQ remapping code by introducing the
panic_on_irq_remap() function.Signed-off-by: Joerg Roedel
Acked-by: Sebastian Andrzej Siewior
Reviewed-by: Konrad Rzeszutek Wilk -
This pointer is changed to a different function when IRQ
remapping is enabled.Signed-off-by: Joerg Roedel
Acked-by: Sebastian Andrzej Siewior
Reviewed-by: Konrad Rzeszutek Wilk -
With interrupt remapping a special function is used to
change the affinity of an IO-APIC interrupt. Abstract this
with a function pointer.Signed-off-by: Joerg Roedel
Acked-by: Sebastian Andrzej Siewior
Reviewed-by: Konrad Rzeszutek Wilk -
Use seperate routines to setup MSI IRQs for both
irq_remapping_enabled cases.Signed-off-by: Joerg Roedel
Acked-by: Sebastian Andrzej Siewior
Reviewed-by: Konrad Rzeszutek Wilk -
This function pointer can be overwritten by the IRQ
remapping code. The irq_remapping_enabled check can be
removed from default_setup_hpet_msi.Signed-off-by: Joerg Roedel
Acked-by: Sebastian Andrzej Siewior
Reviewed-by: Konrad Rzeszutek Wilk -
This call-back is used to dump IO-APIC entries for debugging
purposes into the kernel log. VT-d needs a special routine
for this and will overwrite the default.Signed-off-by: Joerg Roedel
Acked-by: Sebastian Andrzej Siewior
Reviewed-by: Konrad Rzeszutek Wilk -
This function pointer is used to call a system-specific
function for disabling the IO-APIC. Currently this is used
for IRQ remapping which has its own disable routine.Also introduce the necessary infrastructure in the interrupt
remapping code to overwrite this and other function pointers
as necessary by interrupt remapping.Signed-off-by: Joerg Roedel
Acked-by: Sebastian Andrzej Siewior
Reviewed-by: Konrad Rzeszutek Wilk -
IO-APIC and PIC use the same resume routines when IRQ
remapping is enabled or disabled. So it should be safe to
mask the other APICs for the IRQ-remapping-disabled case
too.Signed-off-by: Joerg Roedel
Acked-by: Sebastian Andrzej Siewior
Reviewed-by: Konrad Rzeszutek Wilk -
Move the three easy to move checks in the x86' apic.c file
into the IRQ-remapping code.Signed-off-by: Joerg Roedel
Acked-by: Sebastian Andrzej Siewior
Reviewed-by: Konrad Rzeszutek Wilk
25 Jan, 2013
3 commits
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Take advantage of multiple MSIs implementation on x86 - on
systems with IRQ remapping AHCI ports not only get assigned
separate MSI vectors - but also separate IRQs. As result,
interrupts generated by different ports could be serviced on
different CPUs rather than on a single one.In cases when number of allocated MSIs is less than requested
the Sharing Last MSI mode does not get used, no matter
implemented in hardware or not. Instead, the driver assumes the
advantage of multiple MSIs is negated and falls back to the
single MSI mode as if MRSM bit was set (some Intel chips
implement this strategy anyway - MRSM bit gets set even if the
number of allocated MSIs exceeds the number of implemented ports).Signed-off-by: Alexander Gordeev
Acked-by: Jeff Garzik
Cc: Bjorn Helgaas
Cc: Suresh Siddha
Cc: Yinghai Lu
Cc: Matthew Wilcox
Cc: Linus Torvalds
Cc: Andrew Morton
Cc: Peter Zijlstra
Cc: Thomas Gleixner
Link: http://lkml.kernel.org/r/15bf7ee314dd55f21ec7d2a01c47613cd8190a7c.1353324359.git.agordeev@redhat.com
Signed-off-by: Ingo Molnar -
The new function pci_enable_msi_block_auto() tries to allocate
maximum possible number of MSIs up to the number the device
supports. It generalizes a pattern when pci_enable_msi_block()
is contiguously called until it succeeds or fails.Opposite to pci_enable_msi_block() which takes the number of
MSIs to allocate as a input parameter,
pci_enable_msi_block_auto() could be used by device drivers to
obtain the number of assigned MSIs and the number of MSIs the
device supports.Signed-off-by: Alexander Gordeev
Acked-by: Bjorn Helgaas
Cc: Suresh Siddha
Cc: Yinghai Lu
Cc: Matthew Wilcox
Cc: Jeff Garzik
Cc: Linus Torvalds
Cc: Andrew Morton
Cc: Peter Zijlstra
Cc: Thomas Gleixner
Link: http://lkml.kernel.org/r/c3de2419df94a0f95ca1a6f755afc421486455e6.1353324359.git.agordeev@redhat.com
Signed-off-by: Ingo Molnar -
The MSI specification has several constraints in comparison with
MSI-X, most notable of them is the inability to configure MSIs
independently. As a result, it is impossible to dispatch
interrupts from different queues to different CPUs. This is
largely devalues the support of multiple MSIs in SMP systems.Also, a necessity to allocate a contiguous block of vector
numbers for devices capable of multiple MSIs might cause a
considerable pressure on x86 interrupt vector allocator and
could lead to fragmentation of the interrupt vectors space.This patch overcomes both drawbacks in presense of IRQ remapping
and lets devices take advantage of multiple queues and per-IRQ
affinity assignments.Signed-off-by: Alexander Gordeev
Cc: Bjorn Helgaas
Cc: Suresh Siddha
Cc: Yinghai Lu
Cc: Matthew Wilcox
Cc: Jeff Garzik
Cc: Linus Torvalds
Cc: Andrew Morton
Cc: Peter Zijlstra
Cc: Thomas Gleixner
Link: http://lkml.kernel.org/r/c8bd86ff56b5fc118257436768aaa04489ac0a4c.1353324359.git.agordeev@redhat.com
Signed-off-by: Ingo Molnar
24 Jan, 2013
12 commits
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This patch updates x2apic initializaition code to allow x2apic
on VMware platform even without interrupt remapping support.
The hypervisor_x2apic_available hook was added in x2apic
initialization code and used by KVM and XEN, before this.
I have also cleaned up that code to export this hook through the
hypervisor_x86 structure.Compile tested for KVM and XEN configs, this patch doesn't have
any functional effect on those two platforms.On VMware platform, verified that x2apic is used in physical
mode on products that support this.Signed-off-by: Alok N Kataria
Reviewed-by: Doug Covelli
Reviewed-by: Dan Hecht
Acked-by: H. Peter Anvin
Cc: Konrad Rzeszutek Wilk
Cc: Jeremy Fitzhardinge
Cc: Avi Kivity
Link: http://lkml.kernel.org/r/1358466282.423.60.camel@akataria-dtop.eng.vmware.com
Signed-off-by: Ingo Molnar -
Since circa 3.5, we've had dozens of reports of people hitting
this warning. Forwarded reports have been met with silence, so
just remove the warning if no-one cares.Example reports:
https://bugzilla.redhat.com/show_bug.cgi?id=797687
https://bugzilla.redhat.com/show_bug.cgi?id=867174
https://bugzilla.redhat.com/show_bug.cgi?id=894865Signed-off-by: Dave Jones
Cc: Andrew Morton
Link: http://lkml.kernel.org/r/20130118175847.GA27662@redhat.com
Signed-off-by: Ingo Molnar -
Pull more USB fixes from Greg Kroah-Hartman:
"Here are some more USB fixes for the 3.8-rc4 tree.Some gadget driver fixes, and finally resolved the ehci-mxc driver
build issues (it's just some code moving around and being deleted)."* tag 'usb-3.8-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb:
USB: EHCI: fix build error in ehci-mxc
USB: EHCI: add a name for the platform-private field
USB: EHCI: fix incorrect configuration test
USB: EHCI: Move definition of EHCI_STATS to ehci.h
USB: UHCI: fix IRQ race during initialization
usb: gadget: FunctionFS: Fix missing braces in parse_opts
usb: dwc3: gadget: fix ep->maxburst for ep0
ARM: i.MX clock: Change the connection-id for fsl-usb2-udc
usb: gadget: fsl_mxc_udc: replace MX35_IO_ADDRESS to ioremap
usb: gadget: fsl-mxc-udc: replace cpu_is_xxx() with platform_device_id
usb: musb: cppi_dma: drop '__init' annotation -
Pull drivers/misc fix from Greg Kroah-Hartman:
"Here is a single revert for the ti-st misc driver, fixing problem that
was introduced in 3.7-rc1 that has been bothering people."* tag 'char-misc-3.8-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc:
Revert "drivers/misc/ti-st: remove gpio handling" -
Pull a TTY maintainer patch from Greg Kroah-Hartman:
"Just a MAINTAINERS update, now that Alan has left for a bit, I'll
continue to watch over the serial drivers."* tag 'tty-3.8-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty:
MAINTAINERS: Someone needs to watch over the serial drivers -
Pull media fixes from Mauro Carvalho Chehab:
- gspca: add needed delay for I2C traffic for sonixb/sonixj cameras
- gspca: add one missing Kinect USB ID
- usbvideo: some regression fixes
- omap3isp: fix some build issues
- videobuf2: fix video output handling
- exynos s5p/m5mols: a few regression fixes.* 'v4l_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media:
[media] uvcvideo: Set error_idx properly for S_EXT_CTRLS failures
[media] uvcvideo: Cleanup leftovers of partial revert
[media] uvcvideo: Return -EACCES when trying to set a read-only control
[media] omap3isp: Don't include
[media] s5p-mfc: Fix interrupt error handling routine
[media] s5p-fimc: Fix return value of __fimc_md_create_flite_source_links()
[media] m5mols: Fix typo in get_fmt callback
[media] v4l: vb2: Set data_offset to 0 for single-plane output buffers
[media] [FOR,v3.8] omap3isp: Don't include deleted OMAP plat/ header files
[media] gspca_sonixj: Add a small delay after i2c_w1
[media] gspca_sonixb: Properly wait between i2c writes
[media] gspca_kinect: add Kinect for Windows USB id -
Signed-off-by: Greg Kroah-Hartman
-
Pull m68k fixes from Geert Uytterhoeven:
"The asm-generic changeset has been ack'ed by Arnd."* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/geert/linux-m68k:
m68k: Wire up finit_module
asm-generic/dma-mapping-broken.h: Provide dma_alloc_attrs()/dma_free_attrs()
m68k: Provide dma_alloc_attrs()/dma_free_attrs() -
Pull arm64 fixes from Catalin Marinas:
- ELF coredump fix (more registers dumped than what user space expects)
- SUBARCH name generation (s/aarch64/arm64/)* tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/cmarinas/linux-aarch64:
arm64: makefile: fix uname munging when setting ARCH on native machine
arm64: elf: fix core dumping to match what glibc expects -
This patch (as1643b) fixes a build error in ehci-hcd when compiling for
ARM with allmodconfig:drivers/usb/host/ehci-hcd.c:1285:0: warning: "PLATFORM_DRIVER" redefined [enabled by default]
drivers/usb/host/ehci-hcd.c:1255:0: note: this is the location of the previous definition
drivers/usb/host/ehci-mxc.c:280:31: warning: 'ehci_mxc_driver' defined but not used [-Wunused-variable]
drivers/usb/host/ehci-hcd.c:1285:0: warning: "PLATFORM_DRIVER" redefined [enabled by default]
drivers/usb/host/ehci-hcd.c:1255:0: note: this is the location of the previous definitionThe fix is to convert ehci-mxc over to the new "ehci-hcd is a library"
scheme so that it can coexist peacefully with the ehci-platform
driver. As part of the conversion the ehci_mxc_priv data structure,
which was allocated dynamically, is now placed where it belongs: in
the private area at the end of struct ehci_hcd.Signed-off-by: Alan Stern
Tested-by: Shawn Guo
Signed-off-by: Greg Kroah-Hartman -
Pull sound fixes from Takashi Iwai:
"Only a few small HD-audio fixes:
- Addition of new Conexant codec IDs
- Two one-liners to add fixups for Realtek codecs
- A last-minute regression fix for auto-mute with power-saving mode
(regressed since 3.8-rc1)"* tag 'sound-3.8' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound:
ALSA: hda - Fix inconsistent pin states after resume
ALSA: hda - Add Conexant CX20755/20756/20757 codec IDs
ALSA: hda - Add fixup for Acer AO725 laptop
ALSA: hda - Fix mute led for another HP machine -
Signed-off-by: Alan Cox
Signed-off-by: Linus Torvalds
23 Jan, 2013
7 commits
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The commit [26a6cb6c: ALSA: hda - Implement a poll loop for jacks as a
module parameter] introduced the polling jack detection code, but it
also moved the call of snd_hda_jack_set_dirty_all() in the resume path
after resume/init ops call. This caused a regression when the jack
state has been changed during power-down (e.g. in the power save
mode). Since the driver doesn't probe the new jack state but keeps
using the cached value due to no dirty flag, the pin state remains
also as if the jack is still plugged.The fix is simply moving snd_hda_jack_set_dirty_all() to the original
position.Reported-by: Manolo Díaz
Signed-off-by: Takashi Iwai -
This reverts commit eccf2979b2c034b516e01b8a104c3739f7ef07d1.
The reason is that it broke TI WiLink shared transport on Panda.
Also, callback functions should not be added to board files anymore,
so revert to implementing the power functions in the driver itself.Additionally, changed a variable name ('status' to 'err') so that this
revert compiles properly.Cc: stable [3.7]
Acked-by: Tony Lindgren
Signed-off-by: Luciano Coelho
Signed-off-by: Greg Kroah-Hartman -
Pull PCI updates from Bjorn Helgaas:
"The most important is a fix for a pciehp deadlock that occurs when
unplugging a Thunderbolt adapter. We also applied the same fix to
shpchp, removed CONFIG_EXPERIMENTAL dependencies, fixed a
pcie_aspm=force problem, and fixed a refcount leak.Details:
- Hotplug
PCI: pciehp: Use per-slot workqueues to avoid deadlock
PCI: shpchp: Make shpchp_wq non-ordered
PCI: shpchp: Handle push button event asynchronously
PCI: shpchp: Use per-slot workqueues to avoid deadlock- Power management
PCI: Allow pcie_aspm=force even when FADT indicates it is unsupported- Misc
PCI/AER: pci_get_domain_bus_and_slot() call missing required pci_dev_put()
PCI: remove depends on CONFIG_EXPERIMENTAL"* tag '3.8-pci-fixes-2' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci:
PCI: remove depends on CONFIG_EXPERIMENTAL
PCI: Allow pcie_aspm=force even when FADT indicates it is unsupported
PCI: shpchp: Use per-slot workqueues to avoid deadlock
PCI: shpchp: Handle push button event asynchronously
PCI: shpchp: Make shpchp_wq non-ordered
PCI/AER: pci_get_domain_bus_and_slot() call missing required pci_dev_put()
PCI: pciehp: Use per-slot workqueues to avoid deadlock -
Commit 083b804c4d3e ("async: use workqueue for worker pool") made it
possible that async jobs are moved from pending to running out-of-order.
While pending async jobs will be queued and dispatched for execution in
the same order, nothing guarantees they'll enter "1) move self to the
running queue" of async_run_entry_fn() in the same order.Before the conversion, async implemented its own worker pool. An async
worker, upon being woken up, fetches the first item from the pending
list, which kept the executing lists sorted. The conversion to
workqueue was done by adding work_struct to each async_entry and async
just schedules the work item. The queueing and dispatching of such work
items are still in order but now each worker thread is associated with a
specific async_entry and moves that specific async_entry to the
executing list. So, depending on which worker reaches that point
earlier, which is non-deterministic, we may end up moving an async_entry
with larger cookie before one with smaller one.This broke __lowest_in_progress(). running->domain may not be properly
sorted and is not guaranteed to contain lower cookies than pending list
when not empty. Fix it by ensuring sort-inserting to the running list
and always looking at both pending and running when trying to determine
the lowest cookie.Over time, the async synchronization implementation became quite messy.
We better restructure it such that each async_entry is linked to two
lists - one global and one per domain - and not move it when execution
starts. There's no reason to distinguish pending and running. They
behave the same for synchronization purposes.Signed-off-by: Tejun Heo
Cc: Arjan van de Ven
Cc: stable@vger.kernel.org
Signed-off-by: Linus Torvalds -
Pull perf/urgent fixes from Arnaldo Carvalho de Melo:
. revert 20b279 - require exclude_guest to use PEBS - kernel side, now
older binaries will continue working for things like cycles:pp
without needing to pass extra modifiers, from David Ahern.. Fix building from 'make perf-*-src-pkg' tarballs, broken by UAPI,
from Sebastian Andrzej Siewior[ Pulling directly, Ingo would normally pull but has been unresponsive ]
* tag 'perf-urgent-for-mingo' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux:
perf tools: Fix building from 'make perf-*-src-pkg' tarballs
perf x86: revert 20b279 - require exclude_guest to use PEBS - kernel side -
Pull parisc fixes from Helge Deller:
"Improve the stability of the linux kernel on the parisc architecture"* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux:
parisc: sigaltstack doesn't round ss.ss_sp as required
parisc: improve ptrace support for gdb single-step
parisc: don't claim cpu irqs more than once
parisc: avoid undefined shift in cnv_float.h -
Pull fuse fixes from Miklos Szeredi:
"This contain a bugfix for CUSE and miscellaneous small fixes"* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/fuse:
fuse: remove unused variable in fuse_try_move_page()
fuse: make fuse_file_fallocate() static
fuse: Move CUSE Kconfig entry from fs/Kconfig into fs/fuse/Kconfig
cuse: fix uninitialized variable warnings
cuse: do not register multiple devices with identical names
cuse: use mutex as registration lock instead of spinlocks
