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Revert 7628b0a8c01a02966d2228bdf741ddedb128e8f8. Thomas Bachler
reports:
Commit 7628b0a8c01a02966d2228bdf741ddedb128e8f8 (drivers/net/tulip/dmfe:
support basic carrier detection) breaks networking on my Davicom DM9009.
ethtool always reports there is no link. tcpdump shows incoming packets,
but TX is disabled. Reverting the above patch fixes the problem.
Cc: Samuel Thibault <samuel.thibault@ens-lyon.org>
Cc: Jeff Garzik <jeff@garzik.org>
Cc: Valerie Henson <val_henson@linux.intel.com>
Cc: Thomas Bachler <thomas@archlinux.org>
Cc: <stable@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
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Returns NETDEV_TX_BUSY when BD ring is full.
Signed-off-by: Li Yang <leoli@freescale.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
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Fix broken BD processing code.
Signed-off-by: Michael Barkowski <michael.barkowski@freescale.com>
Signed-off-by: Li Yang <leoli@freescale.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
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Fix two issues in this driver's netpoll path: one usual, with spin_unlock_irq()
enabling interrupts which nobody asks it to do (that has been fixed recently in
a number of drivers) and one unusual, with poll_controller() method possibly
causing loss of interrupts due to the interrupt status register being cleared
by a simple read and the interrpupt handler simply storing it, not accumulating.
Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
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In active-backup mode, the current bonding code duplicates IGMP
traffic to all slaves, so that switches are up to date in case of a
failover from an active to a backup interface. If bonding then fails
back to the original active interface, it is likely that the "active
slave" switch's IGMP forwarding for the port will be out of date until
some event occurs to refresh the switch (e.g., a membership query).
This patch alters the behavior of bonding to no longer flood
IGMP to all ports, and to issue IGMP JOINs to the newly active port at
the time of a failover. This insures that switches are kept up to date
for all cases.
"GOELLESCH Niels" <niels.goellesch@eurocontrol.int> originally
reported this problem, and included a patch. His original patch was
modified by Jay Vosburgh to additionally remove the existing IGMP flood
behavior, use RCU, streamline code paths, fix trailing white space, and
adjust for style.
Signed-off-by: Jay Vosburgh <fubar@us.ibm.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
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The ARP validation code only needs ARPs for the bonding device.
Signed-off-by: Jay Vosburgh <fubar@us.ibm.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
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Bonding can erroneously register the same packet_type to receive
ARPs (for use by ARP validation): once at device open time, and once via
sysfs. Since sysfs can change the validate setting (and thus register
or unregister) at any time, a flag is needed to synchronize with device
open in order to avoid double registrations, and the simplest place is
within the packet_type structure itself. Double unregister is not an
issue.
Bug reported by Ulrich Oelmann <ulrich.oelmann@web.de>.
Signed-off-by: Jay Vosburgh <fubar@us.ibm.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
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* 'for-linus' of git://git.o-hand.com/linux-rpurdie-backlight:
backlight: Allow enable/disable of fb backlights, fixing regressions
backlight: Fix nvidia backlight initial brightness
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CT based mach64 cards were reported to hang on sparc64 boxes when
compiled with gcc-4.1.x and later.
Looking at this piece of code, it's no surprise. A critical
delay was implemented as an empty for() loop, and gcc 4.0.x
and previous did not optimize it away, so we did get a delay.
But gcc-4.1.x and later can optimize it away, and we get crashes.
Use a real udelay() to fix this. Fix verified on SunBlade100.
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Replacing use of UTS_RELEASE with utsname()->release avoids that the
usb-storage driver is recompiled each time the kernel version changes.
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Cc: Greg KH <greg@kroah.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Fix the following compile error:
MODPOST 327 modules
WARNING: "aty_st_lcd" [drivers/video/aty/atyfb.ko] undefined!
WARNING: "aty_ld_lcd" [drivers/video/aty/atyfb.ko] undefined!
make[1]: *** [__modpost] Error 1
make: *** [modules] Error 2
Signed-off-by: Antonino Daplas <adaplas@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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"drivers/char/epca.c:2741: warning: 'get_termio' defined but not used"
Signed-off-by: Michal Piotrowski <michal.k.k.piotrowski@gmail.com>
Acked-by: Alan Cox <alan@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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This patch resolves the issue found here:
http://bugme.osdl.org/show_bug.cgi?id=7426
The basic summary is:
Currently we register most of i386/x86_64 clocksources at module_init
time. Then we enable clocksource selection at late_initcall time. This
causes some problems for drivers that use gettimeofday for init
calibration routines (specifically the es1968 driver in this case),
where durring module_init, the only clocksource available is the low-res
jiffies clocksource. This may cause slight calibration errors, due to
the small sampling time used.
It should be noted that drivers that require fine grained time may not
function on architectures that do not have better then jiffies
resolution timekeeping (there are a few). However, this does not
discount the reasonable need for such fine-grained timekeeping at init
time.
Thus the solution here is to register clocksources earlier (ideally when
the hardware is being initialized), and then we enable clocksource
selection at fs_initcall (before device_initcall).
This patch should probably get some testing time in -mm, since
clocksource selection is one of the most important issues for correct
timekeeping, and I've only been able to test this on a few of my own
boxes.
Signed-off-by: John Stultz <johnstul@us.ibm.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: "David S. Miller" <davem@davemloft.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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ipmi_si_intf tries to access default ports, if no device could be found
elsewhere. On PPC we have a function to check, if these legacy IO ports
are accessible. This patch adds a check for these ports on PPC. This
patch fixes a breakage of IPMI module on PPC machines without a BMC.
Signed-off-by: Christian Krafft <krafft@de.ibm.com>
Acked-by: Michael Ellerman <michael@ellerman.id.au>
Signed-off-by: Corey Minyard <minyard@acm.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Recent patch for raid6 reshape had a change missing that showed up in
subsequent review.
Many places in the raid5 code used "conf->raid_disks-1" to mean "number of
data disks". With raid6 that had to be changed to "conf->raid_disk -
conf->max_degraded" or similar. One place was missed.
This bug means that if a raid6 reshape were aborted in the middle the
recorded position would be wrong. On restart it would either fail (as the
position wasn't on an appropriate boundary) or would leave a section of the
array unreshaped, causing data corruption.
Signed-off-by: Neil Brown <neilb@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Currently sm501fb_crtsrc_store() won't allow the routing to be changed via
echos from userspace in to the sysfs file. The reason for this is that the
strnicmp() for both heads uses a sizeof() for the string length, which ends
up being strlen() + 1 (\0 in the normal case, but the echo gives a newline,
which is where the issue occurs), this then causes a mismatch and
subsequently bails with the -EINVAL.
In addition to this, the hardcoded lengths were then used for the store
length that was returned, which ended up being erroneous and resulting in a
write error. There's also no point in returning anything but the full
length since it will -EINVAL out on a mismatch well before then anyways.
sizeof("string") is great for making sure you have space in your buffer,
but rather less so for string comparisons :-)
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
Acked-by: Ben Dooks <ben-linux@fluff.org>
Cc: "Antonino A. Daplas" <adaplas@pol.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Remove remaining references to saved registers now that
uart_handle_sysrq_char() does not want them.
Signed-off-by: Maciej W. Rozycki <macro@linux-mips.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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The gpio_keys driver is wrongly ARM-specific; it can't build on
other platforms with GPIO suport. This fixes that problem.
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Cc: Dmitry Torokhov <dtor@mail.ru>
Cc: pHilipp Zabel <philipp.zabel@gmail.com>
Cc: Haavard Skinnemoen <hskinnemoen@atmel.com>
Cc: Russell King <rmk@arm.linux.org.uk>
Cc: Richard Purdie <rpurdie@rpsys.net>
Cc: Ben Nizette <ben.nizette@iinet.net.au>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Most drivers using GPIOs already know they are running on a system that
supports the generic GPIO calls, because of other platform dependencies.
But the generic GPIO-based LED and input button drivers can't know that.
So this patch adds a Kconfig hook, GENERIC_GPIO, to mark the platforms
where <asm/gpio.h> will do the right thing. Currently that's a bunch of
ARMs, and AVR32; more are on the way.
It also fixes a dependency bug for the gpio button input driver; it was
wrong to start with, now it covers all platforms with GENERIC_GPIO.
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Acked-by: Richard Purdie <rpurdie@rpsys.net>
Cc: Arnaud Patard <arnaud.patard@rtp-net.org>
Cc: <raph@8d.com>
Cc: <msvoboda@ra.rockwell.com>
Cc: pHilipp Zabel <philipp.zabel@gmail.com>
Cc: Haavard Skinnemoen <hskinnemoen@atmel.com>
Cc: Dmitry Torokhov <dtor@mail.ru>
Cc: Russell King <rmk@arm.linux.org.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Fix soft lockup with iSeries viocd driver, caused by eventually calling
end_that_request_first() with nr_bytes 0.
Some versions of hald do an SG_IO ioctl on the viocd device which becomes a
request with hard_nr_sectors and hard_cur_sectors set to zero. Passing zero
as the number of sectors to end_request() (which calls
end_that_request_first()) causes an infinite loop when the bio is being freed.
This patch makes sure that the zero is never passed. It only requires some
number larger the the request size the terminate the loop.
The lockup is triggered by hald, interrogating the device.
Signed-off-by: Tony Breeds <tony@bakeyournoodle.com>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
Cc: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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For devices that do not support msi-x we only support 1 interrupt. Therefore
we can disable that one interrupt by disabling the msi capability itself. If
we leave the intx interrupts disabled while we have the msi capability
disabled no interrupts should be delivered from that device.
Devices with just the minimal msi support (and thus hitting this code path)
include things like the intel e1000 nic, so it looks like is going to be a
fairly common case and thus important to get right.
Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>
Cc: Michael Ellerman <michael@ellerman.id.au>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Greg KH <greg@kroah.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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enable/disable_msi_mode have several side effects which keeps them from being
generally useful. So this patch replaces them with with two much more
targeted functions: msi_set_enable and msix_set_enable.
This patch makes pci_dev->msi_enabled and pci_dev->msix_enabled the definitive
way to test if linux has enabled the msi capability, and has the appropriate
msi data structures set up.
This patch ensures that while writing the msi messages in save/restore and
during device initialization we have the msi capability disabled so we don't
get into races. The pci spec requires that we do not have the msi capability
enabled and the msi messages unmasked while we write the messages. Completely
disabling the capability is overkill but it is easy :)
Care has been taken so we never have both a msi capability and intx enabled
simultaneously. We haven't run into a problem yet but better safe then sorry.
Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>
Cc: Michael Ellerman <michael@ellerman.id.au>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Greg KH <greg@kroah.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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In some cases when we are not using msi we need a way to ensure that the
hardware does not have an msi capability enabled. Currently the code has been
calling disable_msi_mode to try and achieve that. However disable_msi_mode
has several other side effects and is only available when msi support is
compiled in so it isn't really appropriate.
Instead this patch implements pci_msi_off which disables all msi and msix
capabilities unconditionally with no additional side effects.
pci_disable_device was redundantly clearing the bus master enable flag and
clearing the msi enable bit. A device that is not allowed to perform bus
mastering operations cannot generate intx or msi interrupt messages as those
are essentially a special case of dma, and require bus mastering. So the call
in pci_disable_device to disable msi capabilities was redundant.
quirk_pcie_pxh also called disable_msi_mode and is updated to use pci_msi_off.
Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>
Cc: Michael Ellerman <michael@ellerman.id.au>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Greg KH <greg@kroah.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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In http://bugzilla.kernel.org/show_bug.cgi?id=8065, Shen points out that the
cyclades driver forget to return closing_wait to userspace.
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Cc: Russell King <rmk@arm.linux.org.uk>
Cc: Shen <shanlu@cs.uiuc.edu>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Enabling the backlight by default appears to cause problems for many
users. This patch disables backlight controls unless explicitly
enabled by users via a module parameter. Since PMAC users are known
to work, default to enabled in that case.
Signed-off-by: Richard Purdie <rpurdie@rpsys.net>
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Fix a mix up when the nvidia driver was converted resulting
in the backlight having an incorrect initial brightness.
Signed-off-by: Richard Purdie <rpurdie@rpsys.net>
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* master.kernel.org:/pub/scm/linux/kernel/git/bart/ide-2.6:
ide: make legacy IDE VLB modules check for the "probe" kernel params (v2)
ide: remove some obsoleted kernel params (v2)
ide/pci/delkin_cb.c: pci_module_init to pci_register_driver
scc_pata: bugfix for checking DMA IRQ status
ide: remove a ton of pointless #undef REALLY_SLOW_IO
siimage: DRAC4 note
adjust legacy IDE resource setting (v2)
ide: fix pmac breakage
ide-cs: Update device table
ide: ide_get_best_pio_mode() returns incorrect IORDY setting (take 2)
piix/slc90e66: more tuneproc() fixing (take 2)
ide: fix drive side 80c cable check, take 2
cmd64x: fix PIO mode setup (take 3)
alim15x3: fix PIO mode setup
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master.kernel.org:/pub/scm/linux/kernel/git/jgarzik/libata-dev
* 'upstream-linus' of master.kernel.org:/pub/scm/linux/kernel/git/jgarzik/libata-dev:
[libata] pata_jmicron: build fix
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* master.kernel.org:/pub/scm/linux/kernel/git/mchehab/v4l-dvb:
V4L/DVB (5260): Cx88-blackbird: allow usage of both 376836 and 262144 sized firmware images
V4L/DVB (5366): Pvrusb2: Fix compilation warning for amd64 builds (use %zu instead of %u)
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* master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6:
[VLAN]: Avoid a 4-order allocation.
[HDLC] Fix dev->header_cache_update having a random value.
[NetLabel]: Verify sensitivity level has a valid CIPSO mapping
[PPPOE]: Key connections properly on local device.
[AF_UNIX]: Test against sk_max_ack_backlog properly.
[NET]: Fix bugs in "Whether sock accept queue is full" checking
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* master.kernel.org:/home/rmk/linux-2.6-arm: (30 commits)
[ARM] Acorn: move the i2c bus driver into drivers/i2c
[ARM] ARM SCSI: Don't try to dma_map_sg too many scatterlist entries
[ARM] ARM FAS216: don't modify scsi_cmnd request_bufflen
[ARM] rtc-pcf8583: Final fixes for this RTC on RiscPC
[ARM] rtc-pcf8583: correct month and year offsets
[ARM] rtc-pcf8583: don't use BCD_TO_BIN/BIN_TO_BCD
[ARM] EBSA110: Work around build errors
[ARM] 4241/1: Define mb() as compiler barrier on a uniprocessor system
[ARM] 4239/1: S3C24XX: Update kconfig entries for PM
[ARM] 4238/1: S3C24XX: docs: update suspend and resume
[ARM] 4237/2: oprofile: Always allow backtraces on ARM
[ARM] Yet more asm/apm-emulation.h stuff
ARM: OMAP: Add missing get_irqnr_preamble and arch_ret_to_user for omap2
ARM: OMAP: Use linux/delay.h not asm/delay.h
ARM: OMAP: Remove obsolete alsa typedefs
ARM: OMAP: omap1510->15xx conversions needed for sx1
ARM: OMAP: Add missing includes to board-nokia770
ARM: OMAP: Workqueue changes for board-h4.c
ARM: OMAP: dmtimer.c omap1 register fix
ARM: OMAP: board-nokia770: correct lcd name
...
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Move the Acorn IOC/IOMD I2C bus driver from drivers/i2c, strip
out the reminants of the platform specific parts of the old
PCF8583 RTC code, and remove the old obsolete PCF8583 driver.
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
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An off-by-one bug meant we were always trying to map one too many
scatterlist entries. This was mostly harmless prior to the checks
going in to consistent_sync(), but now causes the kernel to BUG.
Also, powertec.c was missing an assignment to info->ec.
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
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SCSI doesn't want drivers to modify request_bufflen, so keep a
driver-private copy of this in the scsi_pointer structure instead.
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
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Replace the I2C bus address, as per drivers/acorn/char/pcf8583.c.
Also, since this driver also contains Acorn RiscPC specific code
for obtaining the current year from the SRAM (and updating the
platform specific checksum when writing new data back) this is
NOT a platform independent driver.
Document it as such, and update the dependencies to reflect this
fact.
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
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No, today is not 4th April 3907, it's 4th March 2007.
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
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Both BCD_TO_BIN(x) and BIN_TO_BCD(x) have an unexpected side-effect -
not only do they return the value as expected, they _modify_ their
argument in the process.
Let's play it safe and avoid these macros.
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
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Use the standard magic.h for kvmfs.
Cc: Avi Kivity <avi@qumranet.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Avi Kivity <avi@qumranet.com>
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A bogus 'return r' can cause an otherwise successful module load to fail.
This both denies users the use of kvm, and it also denies them the use of
their machine, as it leaves a filesystem registered with its callbacks
pointing into now-freed module memory.
Fix by returning a zero like a good module.
Thanks to Richard Lucassen <mailinglists@lucassen.org> (?) for reporting
the problem and for providing access to a machine which exhibited it.
Signed-off-by: Avi Kivity <avi@qumranet.com>
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Enabling dirty page logging is done using KVM_SET_MEMORY_REGION ioctl.
If the memory region already exists, we need to remove write accesses,
so writes will be caught, and dirty pages will be logged.
Signed-off-by: Uri Lublin <uril@qumranet.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
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To be called from kvm_vm_ioctl_set_memory_region()
Signed-off-by: Uri Lublin <uril@qumranet.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
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Since dirty_bitmap is an unsigned long array, the alignment and size need
to take that into account.
Signed-off-by: Uri Lublin <uril@qumranet.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
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A few places where we modify guest memory fail to call mark_page_dirty(),
causing live migration to fail. This adds the missing calls.
Signed-off-by: Uri Lublin <uril@qumranet.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
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Allocate a distinct inode for every vcpu in a VM. This has the following
benefits:
- the filp cachelines are no longer bounced when f_count is incremented on
every ioctl()
- the API and internal code are distinctly clearer; for example, on the
KVM_GET_REGS ioctl, there is no need to copy the vcpu number from
userspace and then copy the registers back; the vcpu identity is derived
from the fd used to make the call
Right now the performance benefits are completely theoretical since (a) we
don't support more than one vcpu per VM and (b) virtualization hardware
inefficiencies completely everwhelm any cacheline bouncing effects. But
both of these will change, and we need to prepare the API today.
Signed-off-by: Avi Kivity <avi@qumranet.com>
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In preparation of some hacking.
Signed-off-by: Avi Kivity <avi@qumranet.com>
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This reflects the changed scope, from device-wide to single vm (previously
every device open created a virtual machine).
Signed-off-by: Avi Kivity <avi@qumranet.com>
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This avoids having filp->f_op and the corresponding inode->i_fop different,
which is a little unorthodox.
The ioctl list is split into two: global kvm ioctls and per-vm ioctls. A new
ioctl, KVM_CREATE_VM, is used to create VMs and return the VM fd.
Signed-off-by: Avi Kivity <avi@qumranet.com>
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The kvmfs inodes will represent virtual machines and vcpus, as necessary,
reducing cacheline bouncing due to inodes and filps being shared.
Signed-off-by: Avi Kivity <avi@qumranet.com>
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Signed-off-by: Avi Kivity <avi@qumranet.com>
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This patch changes the SVM code to intercept SMIs and handle it
outside the guest.
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
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