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John Harrison 76c3916887 drm/i915: Update deferred context creation to do explicit request management 
In execlist mode, context initialisation is deferred until first use of the
given context. This is because execlist mode has per ring context state and thus
many more context storage objects than legacy mode and many are never actually
used. Previously, the initialisation commands were written to the ring and
tagged with some random request structure via the OLR. This seemed to be causing
a null pointer deference bug under certain circumstances (BZ:88865).

This patch adds explicit request creation and submission to the deferred
initialisation code path. Thus removing any reliance on or randomness caused by
the OLR.

Note that it should be possible to move the deferred context creation until even
later - when the context is actually switched to rather than when it is merely
validated. This would allow the initialisation to be done within the request of
the work that is wanting to use the context. Hence, the extra request that is
created, used and retired just for the context init could be removed completely.
However, this is left for a follow up patch.

For: VIZ-5115
Signed-off-by: John Harrison <John.C.Harrison@Intel.com>
Reviewed-by: Tomas Elf <tomas.elf@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
 		2015-06-23 14:02:11 +02:00
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accessibility
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acpi Merge branches 'acpi-init' and 'acpica' 2015-05-15 00:31:23 +02:00
amba ARM: 8334/1: amba: tegra-ahb: detect and correct bogus base address 2015-04-02 10:03:55 +01:00
android
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ata Merge branch 'for-4.1-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/libata 2015-05-11 10:54:20 -07:00
atm
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auxdisplay
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base Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2015-04-26 17:22:07 -07:00
bcma Merge branch 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus 2015-04-17 15:50:54 -04:00
block nvme: fix kernel memory corruption with short INQUIRY buffers 2015-05-13 10:22:12 -04:00
bluetooth Bluetooth: ath3k: add support of 04ca:300f AR3012 device 2015-05-13 23:04:20 +02:00
bus MIPS: Fix CDMM to use native endian MMIO reads 2015-05-26 16:46:52 +02:00
cdrom
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char ipmi: Fix multi-part message handling 2015-05-05 19:37:22 -05:00
clk clk: si5351: Do not pass struct clk in platform_data 2015-05-08 11:22:30 -07:00
clocksource Initial ACPI support for arm64: 2015-04-24 08:23:45 -07:00
connector
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cpufreq cpufreq: intel_pstate: Fix an annoying !CONFIG_SMP warning 2015-04-15 23:02:24 +02:00
cpuidle cpuidle: Run tick_broadcast_exit() with disabled interrupts 2015-04-29 15:19:21 +02:00
crypto Merge git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6 2015-04-26 13:51:05 -07:00
dca
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devfreq PM / devfreq: tegra: Register governor on module init 2015-03-31 13:17:15 +09:00
dio
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dma dmaengine: increment privatecnt when using dma_get_any_slave_channel 2015-04-29 16:47:57 +05:30
dma-buf dma-buf: cleanup dma_buf_export() to make it easily extensible 2015-04-21 14:47:16 +05:30
edac
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eisa
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extcon extcon: usb-gpio: register extcon device before IRQ registration 2015-04-27 11:06:05 +09:00
firewire
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firmware Merge branch 'dmi-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jdelvare/staging 2015-05-14 18:02:15 -07:00
fmc
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gpio gpio: gpio-kempld: Fix get_direction return value 2015-05-12 13:49:13 +02:00
gpu drm/i915: Update deferred context creation to do explicit request management 2015-06-23 14:02:11 +02:00
hid Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/hid 2015-05-21 17:23:11 -07:00
hsi HSI: cmt_speech: fix error return code 2015-04-05 14:45:27 +02:00
hv Drivers: hv: hv_balloon: correctly handle num_pages>INT_MAX case 2015-04-03 16:20:12 +02:00
hwmon hwmon: (nct6683) Add missing sysfs attribute initialization 2015-05-29 17:47:42 -07:00
hwspinlock
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hwtracing/coresight Char/Misc driver patches for 4.1-rc1 2015-04-21 09:42:58 -07:00
i2c Merge branch 'i2c/for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux 2015-04-26 17:44:09 -07:00
ide Merge branch 'for-4.1-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/libata 2015-05-11 10:54:20 -07:00
idle Power management and ACPI updates for v4.1-rc1 2015-04-14 20:21:54 -07:00
iio The usual mixed bag of fixes for IIO in the 4.1 cycle. 2015-05-13 11:51:14 -07:00
infiniband Merge git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending 2015-05-31 11:31:42 -07:00
input Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input 2015-05-22 14:49:55 -07:00
iommu break kconfig dependency loop 2015-06-02 10:17:21 +02:00
ipack
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irqchip irqchip/gicv3-its: ITS table size should not be smaller than PSZ 2015-05-20 22:13:37 +02:00
isdn Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next 2015-04-15 09:00:47 -07:00
leds This is the bulk of GPIO changes for the v4.1 development 2015-04-18 08:22:10 -04:00
lguest lguest: fix out-by-one error in address checking. 2015-05-27 09:57:21 -07:00
macintosh Merge branch 'next-remove-ldst' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc into next 2015-04-07 13:25:14 +10:00
mailbox
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mcb mcb: request_mem_region() returns NULL on error 2015-04-03 16:15:30 +02:00
md Quite a few fixes for DM's blk-mq support thanks to extra DM multipath 2015-05-29 14:39:24 -07:00
media break kconfig dependency loop 2015-06-02 10:17:21 +02:00
memory ARM: SoC driver updates for v4.1 2015-04-22 09:18:17 -07:00
memstick memstick: mspro_block: add missing curly braces 2015-04-17 09:04:09 -04:00
message
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mfd mfd: da9052: Fix broken regulator probe 2015-05-27 13:34:15 +01:00
misc Char/Misc driver patches for 4.1-rc1 2015-04-21 09:42:58 -07:00
mmc mmc: atmel-mci: fix bad variable type for clkdiv 2015-05-18 09:04:42 +02:00
mtd Two MTD fixes for 4.1: 2015-05-18 10:01:54 -07:00
net ** NOW WITH TESTING! ** 2015-05-29 11:24:28 -07:00
nfc NFC: logging neatening 2015-04-07 12:05:12 +02:00
ntb
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nubus
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of of: add EXPORT_SYMBOL for of_graph_get_endpoint_by_regs 2015-06-23 10:19:10 +10:00
oprofile Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2015-04-26 17:22:07 -07:00
parisc parisc: %pf is only for function pointers 2015-04-24 13:45:54 +02:00
parport
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pci xen: features and fixes for 4.1-rc0 2015-04-16 14:01:03 -05:00
pcmcia ARM: SoC cleanups for v4.1 2015-04-22 09:04:39 -07:00
phy USB patches for 4.1-rc1 2015-04-13 17:07:21 -07:00
pinctrl pinctrl: Fix gpio/pin mapping for Meson8b 2015-05-19 11:40:52 +02:00
platform thinkpad_acpi: Revert unintentional device attribute renaming 2015-05-20 02:18:12 -07:00
pnp Power management and ACPI updates for v4.1-rc1 2015-04-14 20:21:54 -07:00
power power: bq27x00_battery: Add missing MODULE_ALIAS 2015-05-01 23:01:48 +02:00
powercap powercap / RAPL: Add support for Intel Skylake processors 2015-04-15 23:06:16 +02:00
pps
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ps3
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ptp ptp: remove 32 bit get/set methods. 2015-03-31 12:01:19 -04:00
pwm pwm: img: Impose upper and lower timebase steps value 2015-05-19 16:07:40 +02:00
rapidio
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ras
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regulator mfd: da9052: Fix broken regulator probe 2015-05-27 13:34:15 +01:00
remoteproc
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reset
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rpmsg
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rtc drivers/rtc/rtc-armada38x.c: remove unused local `flags' 2015-05-14 17:55:51 -07:00
s390 s390/zcrypt: Fix invalid domain handling during ap module unload 2015-05-13 09:57:29 +02:00
sbus drivers/sbus/char/envctrl.c: ignore orderly_poweroff return value 2015-04-15 16:35:23 -07:00
scsi Merge git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending 2015-05-31 11:31:42 -07:00
sfi
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sh drivers: sh: Remove test for now unsupported sh7372 2015-04-27 13:08:14 +09:00
sn
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soc - fix unused variable warning for pmic-wrapper 2015-04-14 00:43:28 +02:00
spi Merge remote-tracking branches 'spi/fix/fsl-cpm', 'spi/fix/fsl-dspi' and 'spi/fix/fsl-espi' into spi-linus 2015-05-11 17:29:49 +01:00
spmi spmi: pmic_arb: remove ARM build time dependency 2015-04-03 16:15:30 +02:00
ssb ssb: extend fix for PCI related silent reboots to all chipsets 2015-05-20 16:36:06 +03:00
staging Staging / IIO driver fixes for 4.1-rc4 2015-05-16 21:04:56 -07:00
target target: Use a PASSTHROUGH flag instead of transport_types 2015-05-30 19:58:11 -07:00
tc
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thermal Merge branch 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/evalenti/linux-soc-thermal into for-rc 2015-05-19 08:12:27 +08:00
thunderbolt
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tty ttyFDC: Fix to use native endian MMIO reads 2015-05-26 16:46:52 +02:00
uio Revert "uio: constify of_device_id array" 2015-04-03 16:04:21 +02:00
usb USB-serial fixes for v4.1-rc4 2015-05-14 12:43:36 -07:00
uwb
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vfio vfio: Fix runaway interruptible timeout 2015-05-01 16:31:41 -06:00
vhost target: Fix se_tpg_tfo->tf_subsys regression + remove tf_subsystem 2015-05-30 18:04:20 -07:00
video backlight: pwm: Handle EPROBE_DEFER while requesting the PWM 2015-05-26 08:44:59 +01:00
virt
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virtio virtio: drop virtio_device_is_legacy_only 2015-04-15 12:41:14 +09:30
vlynq
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vme
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w1
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watchdog Merge git://www.linux-watchdog.org/linux-watchdog 2015-04-22 11:22:55 -07:00
xen xen/events: don't bind non-percpu VIRQs with percpu chip 2015-05-19 19:55:36 +01:00
zorro
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Kconfig
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Makefile coresight: moving to new "hwtracing" directory 2015-04-03 16:17:04 +02:00