Chris Wilson bfc12ff905 agp/intel: Reinforce the barrier after GTT updates ...

commit f30d3ced9f upstream.

After changing the timing between GTT updates and execution on the GPU,
we started seeing sporadic failures on Ironlake. These were narrowed
down to being an insufficiently strong enough barrier/delay after
updating the GTT and scheduling execution on the GPU. By forcing the
uncached read, and adding the missing barrier for the singular
insert_page (relocation paths), the sporadic failures go away.

Fixes: 983d308cb8 ("agp/intel: Serialise after GTT updates")
Fixes: 3497971a71 ("agp/intel: Flush chipset writes after updating a single PTE")
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Acked-by: Andi Shyti <andi.shyti@intel.com>
Cc: stable@vger.kernel.org # v4.0+
Link: https://patchwork.freedesktop.org/patch/msgid/20200410083535.25464-1-chris@chris-wilson.co.uk
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

2020-06-17 16:40:36 +02:00

..

agp

agp/intel: Reinforce the barrier after GTT updates

2020-06-17 16:40:36 +02:00

hw_random

hwrng: imx-rngc - fix an error path

2020-04-13 10:48:08 +02:00

ipmi

ipmi: fix hung processes in __get_guid()

2020-04-17 10:50:22 +02:00

mwave

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pcmcia

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tpm

tpm: ibmvtpm: retry on H_CLOSED in tpm_ibmvtpm_send()

2020-04-29 16:33:16 +02:00

xilinx_hwicap

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xillybus

PCI: Move ASPM declarations to linux/pci.h

2019-08-28 08:28:39 -05:00

adi.c

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apm-emulation.c

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applicom.c

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applicom.h

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bsr.c

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ds1620.c

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dsp56k.c

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dtlk.c

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efirtc.c

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hangcheck-timer.c

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hpet.c

char: hpet: Fix out-of-bounds read bug

2020-02-24 08:36:59 +01:00

Kconfig

Merge tag 'please-pull-ia64_for_5.4' of git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux

2019-09-16 15:32:01 -07:00

lp.c

lp: fix sparc64 LPSETTIMEOUT ioctl

2019-12-13 08:42:17 +01:00

Makefile

char: remove the SGI tiocx/mbcs driver

2019-08-16 11:33:56 -07:00

mem.c

Merge branch 'next-lockdown' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security

2019-09-28 08:14:15 -07:00

misc.c

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mspec.c

char/mspec: remove SGI SN2 support

2019-08-16 11:33:56 -07:00

nsc_gpio.c

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nvram.c

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nwbutton.c

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nwbutton.h

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nwflash.c

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pc8736x_gpio.c

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powernv-op-panel.c

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ppdev.c

ppdev: fix PPGETTIME/PPSETTIME ioctls

2019-12-17 19:56:41 +01:00

ps3flash.c

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random.c

random: always use batched entropy for get_random_u{32,64}

2020-04-13 10:48:06 +02:00

raw.c

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rtc.c

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scx200_gpio.c

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sonypi.c

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tb0219.c

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tlclk.c

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toshiba.c

toshiba: Add correct printk log level while emitting error log

2019-09-04 13:42:43 +02:00

ttyprintk.c

ttyprintk: fix a potential deadlock in interrupt context issue

2020-02-05 21:22:41 +00:00

uv_mmtimer.c

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virtio_console.c

virtio_console: allocate inbufs in add_port() only if it is needed

2019-11-19 05:13:49 -05:00