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7875efb9f6
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Olaf Hering 7875efb9f6 xen_disk: split discard input to match internal representation 
The guest sends discard requests as u64 sector/count pairs, but the
block layer operates internally with s64/s32 pairs. The conversion
leads to IO errors in the guest, the discard request is not processed.

  domU.cfg:
  'vdev=xvda, format=qcow2, backendtype=qdisk, target=/x.qcow2'
  domU:
  mkfs.ext4 -F /dev/xvda
  Discarding device blocks: failed - Input/output error

Fix this by splitting the request into chunks of BDRV_REQUEST_MAX_SECTORS.
Add input range checking to avoid overflow.

Fixes f313520 ("xen_disk: add discard support")

Signed-off-by: Olaf Hering <olaf@aepfle.de>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Stefano Stabellini <sstabellini@kernel.org>
2016-11-23 10:47:48 -08:00
..
9pfs 9pfs: drop excessive error message from virtfs_reset() 2016-11-01 12:03:03 +01:00
acpi nvdimm acpi: introduce NVDIMM_DSM_MEMORY_SIZE 2016-11-15 17:20:37 +02:00
adc STM32F2xx: Add the ADC device 2016-10-04 13:28:07 +01:00
alpha sun4uv: fix serial initialization regression 2016-10-24 15:27:20 +02:00
arm fw_cfg: move FW_CFG_NB_CPUS out of fw_cfg_init1() 2016-11-16 12:09:58 -02:00
audio audio: intel-hda: check stream entry count during transfer 2016-10-26 14:51:44 +02:00
block xen_disk: split discard input to match internal representation 2016-11-23 10:47:48 -08:00
bt char: replace avail_connections 2016-10-24 15:46:10 +02:00
char spapr-vty: Fix bad assert() statement 2016-11-15 10:08:43 +11:00
core virtio, vhost, pc, pci: documentation, fixes and cleanups 2016-11-15 19:50:36 +00:00
cpu cpu: Abstract CPU core type 2016-06-17 16:33:48 +10:00
cris cris: Fix broken header guard in hw/cris/boot.h 2016-07-12 16:20:46 +02:00
display Xen 2016/10/28 2016-10-31 12:35:39 +00:00
dma hw/dma/pl080: Fix bad bit mask (PL080_CONF_M1 | PL080_CONF_M1) 2016-10-17 19:22:17 +01:00
gpio i.MX: Fix GPIO ISR register write 2016-10-28 15:51:27 +01:00
i2c hw/i2c/bitbang_i2c: Handle NACKs from devices 2016-11-07 10:01:15 +00:00
i386 virtio, vhost, pc: fixes 2016-11-21 11:09:58 +00:00
ide atapi: classify read_cd as conditionally returning data 2016-11-14 11:15:54 -05:00
input hw/input/hid: support alternative sysrq/break scancodes for gtk-vnc 2016-11-10 15:29:58 +00:00
intc nvic: set pending status for not active interrupts 2016-11-07 10:00:24 +00:00
ipack
ipmi ipmi: fix qemu crash while migrating with ipmi 2016-11-18 17:50:09 +02:00
isa char: remove init callback 2016-10-24 15:27:20 +02:00
lm32 Clean up decorations and whitespace around header guards 2016-07-12 16:20:46 +02:00
m68k m68k: change default system clock for m5208evb 2016-10-08 11:25:29 +03:00
mem pc: memhp: enable nvdimm device hotplug 2016-11-01 19:21:09 +02:00
microblaze clean-up: removed duplicate #includes 2016-10-28 18:17:24 +03:00
mips clean-up: removed duplicate #includes 2016-10-28 18:17:24 +03:00
misc ivshmem: Fix 64 bit memory bar configuration 2016-11-18 17:29:34 +02:00
moxie
net virtio, vhost, pc, pci: documentation, fixes and cleanups 2016-11-15 19:50:36 +00:00
nvram fw_cfg: move FW_CFG_NB_CPUS out of fw_cfg_init1() 2016-11-16 12:09:58 -02:00
openrisc
pci trace-events: fix first line comment in trace-events 2016-08-12 10:36:01 +01:00
pci-bridge clean-up: removed duplicate #includes 2016-10-28 18:17:24 +03:00
pci-host apb: convert init to realize 2016-07-29 00:07:09 +03:00
pcmcia
ppc fw_cfg: move FW_CFG_NB_CPUS out of fw_cfg_init1() 2016-11-16 12:09:58 -02:00
s390x virtio: allow per-device-class legacy features 2016-11-15 17:20:36 +02:00
scsi virtio: set ISR on dataplane notifications 2016-11-18 17:29:25 +02:00
sd vmstateify ssi-sd 2016-09-22 18:13:08 +01:00
sh4 sh4: fix broken link to documentation 2016-09-15 15:32:22 +03:00
smbios smbios: fix uuid copy 2016-09-29 11:43:22 +08:00
sparc fw_cfg: move FW_CFG_NB_CPUS out of fw_cfg_init1() 2016-11-16 12:09:58 -02:00
sparc64 fw_cfg: move FW_CFG_NB_CPUS out of fw_cfg_init1() 2016-11-16 12:09:58 -02:00
ssi xilinx: fix buffer overflow on realize 2016-10-24 15:27:20 +02:00
timer clean-up: removed duplicate #includes 2016-10-28 18:17:24 +03:00
tpm clean-up: removed duplicate #includes 2016-10-28 18:17:24 +03:00
tricore tricore: remove useless cast 2016-09-15 15:32:22 +03:00
unicore32 clean-up: removed duplicate #includes 2016-10-28 18:17:24 +03:00
usb xen: attach pvusb usb bus to backend qdev 2016-11-22 10:29:41 -08:00
vfio vfio: Add support for mmapping sub-page MMIO BARs 2016-10-31 09:53:04 -06:00
virtio virtio: set ISR on dataplane notifications 2016-11-18 17:29:25 +02:00
watchdog
xen xen: create qdev for each backend device 2016-11-22 10:29:39 -08:00
xenpv xenpv: Fix qemu_uuid compiling error 2016-09-29 11:43:17 +08:00
xtensa char: remove init callback 2016-10-24 15:27:20 +02:00
Makefile.objs STM32F2xx: Add the ADC device 2016-10-04 13:28:07 +01:00