Vitaly Kuznetsov 87dffe86d4 xen/manage: don't complain about an empty value in control/sysrq node ...

When guest receives a sysrq request from the host it acknowledges it by
writing '\0' to control/sysrq xenstore node. This, however, make xenstore
watch fire again but xenbus_scanf() fails to parse empty value with "%c"
format string:

 sysrq: SysRq : Emergency Sync
 Emergency Sync complete
 xen:manage: Error -34 reading sysrq code in control/sysrq

Ignore -ERANGE the same way we already ignore -ENOENT, empty value in
control/sysrq is totally legal.

Signed-off-by: Vitaly Kuznetsov <vkuznets@redhat.com>
Reviewed-by: Wei Liu <wei.liu2@citrix.com>
Signed-off-by: Boris Ostrovsky <boris.ostrovsky@oracle.com>

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

..

events

xen: Remove unnecessary BUG_ON from __unbind_from_irq()

2018-06-22 08:32:52 +02:00

xen-pciback

treewide: kmalloc() -> kmalloc_array()

2018-06-12 16:19:22 -07:00

xenbus

xen: export device state to sysfs

2018-08-28 17:37:40 -04:00

xenfs

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

acpi.c

xen: rename dom0_op to platform_op

2015-12-21 14:40:55 +00:00

arm-device.c

treewide: kzalloc() -> kcalloc()

2018-06-12 16:19:22 -07:00

balloon.c

xen/balloon: Share common memory reservation routines

2018-07-26 23:05:13 -04:00

biomerge.c

xen/biomerge: Use true and false for boolean values

2018-08-06 10:20:57 -04:00

cpu_hotplug.c

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

dbgp.c

xen: Use dev_is_pci() to check whether it is pci device

2014-01-07 09:53:33 -05:00

efi.c

xen: Implement EFI reset_system callback

2017-05-02 12:06:50 +02:00

evtchn.c

treewide: kvmalloc() -> kvmalloc_array()

2018-06-12 16:19:22 -07:00

fallback.c

xen-pciback: notify hypervisor about devices intended to be assigned to guests

2013-03-22 10:20:55 -04:00

features.c

xen: audit usages of module.h ; remove unnecessary instances

2016-03-21 15:13:32 +00:00

gntalloc.c

mm: treewide: remove GFP_TEMPORARY allocation flag

2017-09-13 18:53:16 -07:00

gntdev-common.h

xen/gntdev: Add initial support for dma-buf UAPI

2018-07-26 23:05:14 -04:00

gntdev-dmabuf.c

drm pull for 4.19-rc1

2018-08-15 17:39:07 -07:00

gntdev-dmabuf.h

xen/gntdev: Add initial support for dma-buf UAPI

2018-07-26 23:05:14 -04:00

gntdev.c

mm, oom: distinguish blockable mode for mmu notifiers

2018-08-22 10:52:44 -07:00

grant-table.c

xen/grant-table: Allow allocating buffers suitable for DMA

2018-07-26 23:05:14 -04:00

Kconfig

xen/gntdev: Add initial support for dma-buf UAPI

2018-07-26 23:05:14 -04:00

Makefile

xen/gntdev: Add initial support for dma-buf UAPI

2018-07-26 23:05:14 -04:00

manage.c

xen/manage: don't complain about an empty value in control/sysrq node

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

mcelog.c

xen/mcelog: eliminate redundant setting of interface version

2018-08-20 14:46:18 -04:00

mem-reservation.c

xen/balloon: Share common memory reservation routines

2018-07-26 23:05:13 -04:00

pci.c

xen/pci: Try harder to get PXM information for Xen

2015-04-15 10:57:28 +01:00

pcpu.c

xen: rename dom0_op to platform_op

2015-12-21 14:40:55 +00:00

platform-pci.c

xen-platform: constify pci_device_id.

2017-08-31 09:45:55 -04:00

preempt.c

xen/preempt: use need_resched() instead of should_resched()

2015-08-20 12:24:14 +01:00

privcmd-buf.c

xen: add new hypercall buffer mapping device

2018-06-22 08:26:42 +02:00

privcmd.c

xen: add new hypercall buffer mapping device

2018-06-22 08:26:42 +02:00

privcmd.h

xen: add new hypercall buffer mapping device

2018-06-22 08:26:42 +02:00

pvcalls-back.c

xen/pvcalls: fix null pointer dereference on map->sock

2018-02-26 17:13:12 +01:00

pvcalls-front.c

pvcalls-front: 64-bit align flags

2018-03-01 07:23:36 +01:00

pvcalls-front.h

xen: fix poll misannotation

2018-02-01 10:07:32 -05:00

swiotlb-xen.c

xen-swiotlb: fix the check condition for xen_swiotlb_free_coherent

2018-05-18 14:37:16 -04:00

sys-hypervisor.c

xen: add sysfs node for hypervisor build id

2017-06-15 08:50:37 +02:00

time.c

xen: features and fixes for v4.15-rc1

2017-11-16 13:06:27 -08:00

tmem.c

mm, swap, frontswap: fix THP swap if frontswap enabled

2018-02-21 15:35:43 -08:00

xen-acpi-cpuhotplug.c

xen: rename dom0_op to platform_op

2015-12-21 14:40:55 +00:00

xen-acpi-memhotplug.c

ACPICA: Resources: Provide common part for struct acpi_resource_address structures.

2015-01-26 16:09:56 +01:00

xen-acpi-pad.c

xen: rename dom0_op to platform_op

2015-12-21 14:40:55 +00:00

xen-acpi-processor.c

xen/ACPI: don't upload Px/Cx data for disabled processors

2018-08-20 14:46:18 -04:00

xen-balloon.c

xen/balloon: fix balloon initialization for PVH Dom0

2018-08-08 11:03:20 -04:00

xen-scsiback.c

SCSI misc on 20180815

2018-08-15 22:06:26 -07:00

xen-selfballoon.c

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

xen-stub.c

xen/acpi: remove redundant acpi/acpi_drivers.h include

2013-03-11 13:53:02 -04:00

xlate_mmu.c

Xen: xlate: Use page_to_xen_pfn instead of page_to_pfn

2016-07-06 10:34:42 +01:00