Thomas Gleixner 773dfd2223 xen: Enable interrupts when calling _cond_resched() ...

commit 8645e56a4a upstream.

xen_maybe_preempt_hcall() is called from the exception entry point
xen_do_hypervisor_callback with interrupts disabled.

_cond_resched() evades the might_sleep() check in cond_resched() which
would have caught that and schedule_debug() unfortunately lacks a check
for irqs_disabled().

Enable interrupts around the call and use cond_resched() to catch future
issues.

Fixes: fdfd811ddd ("x86/xen: allow privcmd hypercalls to be preempted")
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Link: https://lore.kernel.org/r/878skypjrh.fsf@nanos.tec.linutronix.de
Reviewed-by: Juergen Gross <jgross@suse.com>
Signed-off-by: Boris Ostrovsky <boris.ostrovsky@oracle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

2020-02-28 17:22:28 +01:00

..

events

xen/events: remove unlikely() from WARN() condition

2019-09-26 10:10:17 -07:00

xen-pciback

xen/pciback: remove set but not used variable 'old_state'

2019-07-26 10:29:05 +02:00

xenbus

xen/xenbus: fix self-deadlock after killing user process

2019-10-02 16:40:11 -04:00

xenfs

Merge branch 'work.mount0' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs

2019-07-19 10:42:02 -07:00

acpi.c

…

arm-device.c

treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 201

2019-05-30 11:29:52 -07:00

balloon.c

xen/balloon: fix ballooned page accounting without hotplug enabled

2020-01-09 10:19:51 +01:00

biomerge.c

block: pass page to xen_biovec_phys_mergeable

2019-04-01 12:11:13 -06:00

cpu_hotplug.c

xen, cpu_hotplug: Prevent an out of bounds access

2019-03-08 17:58:14 +01:00

dbgp.c

treewide: Add SPDX license identifier for missed files

2019-05-21 10:50:45 +02:00

efi.c

xen/efi: have a common runtime setup function

2019-10-02 10:31:07 -04:00

evtchn.c

xen/events: fix binding user event channels to cpus

2019-07-17 08:09:57 +02:00

features.c

treewide: Add SPDX license identifier for missed files

2019-05-21 10:50:45 +02:00

gntalloc.c

…

gntdev-common.h

…

gntdev-dmabuf.c

xen/gntdev: Check and release imported dma-bufs on close

2019-02-18 06:50:10 +01:00

gntdev-dmabuf.h

xen/gntdev: Do not destroy context while dma-bufs are in use

2019-02-18 06:50:03 +01:00

gntdev.c

xen: Stop abusing DT of_dma_configure API

2019-10-10 11:43:35 -04:00

grant-table.c

xen/grant-table: remove unnecessary printing

2019-10-10 10:41:30 -04:00

Kconfig

xen/gntdev: Use select for DMA_SHARED_BUFFER

2019-12-31 16:45:01 +01:00

Makefile

xen: remove tmem driver

2019-07-17 08:09:58 +02:00

manage.c

treewide: Add SPDX license identifier for missed files

2019-05-21 10:50:45 +02:00

mcelog.c

…

mem-reservation.c

xen/balloon: add runtime control for scrubbing ballooned out pages

2018-09-14 08:51:10 -04:00

pci.c

xen/pci: reserve MCFG areas earlier

2019-09-12 15:02:55 -04:00

pcpu.c

…

platform-pci.c

treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 320

2019-06-05 17:37:05 +02:00

preempt.c

xen: Enable interrupts when calling _cond_resched()

2020-02-28 17:22:28 +01:00

privcmd-buf.c

xen/privcmd-buf.c: convert to use vm_map_pages_zero()

2019-05-14 09:47:50 -07:00

privcmd.c

xen: avoid link error on ARM

2019-07-31 08:14:12 +02:00

privcmd.h

…

pvcalls-back.c

net: add {READ|WRITE}_ONCE() annotations on ->rskq_accept_head

2019-10-09 21:34:31 -07:00

pvcalls-front.c

Merge tag 'for-linus-5.2b-rc3-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip

2019-05-31 10:53:34 -07:00

pvcalls-front.h

…

swiotlb-xen.c

Merge tag 'for-linus-5.4-rc1-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip

2019-09-26 11:22:14 -07:00

sys-hypervisor.c

treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500

2019-06-19 17:09:55 +02:00

time.c

x86/paravirt: Use a single ops structure

2018-09-03 16:50:35 +02:00

xen-acpi-cpuhotplug.c

treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 12

2019-05-21 11:28:45 +02:00

xen-acpi-memhotplug.c

treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 12

2019-05-21 11:28:45 +02:00

xen-acpi-pad.c

treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 288

2019-06-05 17:36:37 +02:00

xen-acpi-processor.c

treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 288

2019-06-05 17:36:37 +02:00

xen-balloon.c

xen/balloon: Support xend-based toolstack take two

2020-02-11 04:35:36 -08:00

xen-front-pgdir-shbuf.c

xen: Introduce shared buffer helpers for page directory...

2018-12-18 12:15:55 -05:00

xen-scsiback.c

Merge tag 'for-linus-5.1a-rc1-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip

2019-03-11 17:08:14 -07:00

xen-stub.c

treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 12

2019-05-21 11:28:45 +02:00

xlate_mmu.c

xen: avoid link error on ARM

2019-07-31 08:14:12 +02:00