qemu/hw
Stefano Garzarella 5c81161f80 virtio-blk: add "discard" and "write-zeroes" properties
In order to avoid migration issues, we enable DISCARD and
WRITE_ZEROES features only for machine type >= 4.0

As discussed with Michael S. Tsirkin and Stefan Hajnoczi on the
list [1], DISCARD operation should not have security implications
(eg. page cache attacks), so we can enable it by default.

[1] https://lists.gnu.org/archive/html/qemu-devel/2019-02/msg00504.html

Suggested-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Stefano Garzarella <sgarzare@redhat.com>
Message-id: 20190221103314.58500-4-sgarzare@redhat.com
Message-Id: <20190221103314.58500-4-sgarzare@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2019-02-22 09:42:16 +00:00
..
9pfs xen: re-name XenDevice to XenLegacyDevice... 2019-01-14 13:45:40 +00:00
acpi qdev: pass an Object * to qbus_set_hotplug_handler() 2019-02-17 21:54:02 +11:00
adc Include qapi/error.h exactly where needed 2018-02-09 13:50:17 +01:00
alpha hw/alpha/Makefile.objs: Create CONFIG_* for alpha 2019-02-05 16:50:20 +01:00
arm hw/arm/armsse: Fix miswiring of expansion IRQs 2019-02-15 09:56:39 +00:00
audio audio: fix pc speaker init 2019-01-24 13:10:19 +01:00
block virtio-blk: add "discard" and "write-zeroes" properties 2019-02-22 09:42:16 +00:00
bt char: allow specifying a GMainContext at opening time 2019-02-13 14:23:39 +01:00
char qdev: pass an Object * to qbus_set_hotplug_handler() 2019-02-17 21:54:02 +11:00
core virtio-blk: add "discard" and "write-zeroes" properties 2019-02-22 09:42:16 +00:00
cpu hw/cpu/cluster: Mark the cpu-cluster device with user_creatable = false 2019-02-06 15:55:56 +01:00
cris hw/cris/Makefile.objs: Create CONFIG_* for cris 2019-02-05 16:50:20 +01:00
display hw/display/milkymist-tmu2: Move inlined code from header to source 2019-02-01 11:58:50 +01:00
dma hw/dma/i8257: Use qemu_log_mask(UNIMP) instead of fprintf 2019-02-14 11:46:30 +01:00
gpio trace: enforce that every trace-events file has a final newline 2019-01-24 14:16:56 +00:00
hppa hw/hppa: forward requests to CPU HPA 2019-02-12 08:59:21 -08:00
hyperv hw/hyperv: fix NULL dereference with pure-kvm SynIC 2018-11-26 14:14:38 -02:00
i2c hw/i2c/Makefile.objs: Create new CONFIG_* variables for EEPROM and ACPI controller 2019-02-05 16:50:21 +01:00
i386 * cpu-exec fixes (Emilio, Laurent) 2019-02-05 19:39:22 +00:00
ide hw/ide: drop iov field from IDEDMA 2019-02-22 09:42:13 +00:00
input pckbd: Convert DPRINTF->trace 2019-02-14 11:46:30 +01:00
intc xics: Drop the KVM ICS class 2019-02-18 10:52:08 +11:00
ipack hw/ipack: Use the IEC binary prefix definitions 2018-07-02 15:41:12 +02:00
ipmi ipmi: Use proper struct reference for BT vmstate 2018-08-23 18:46:25 +02:00
isa char: allow specifying a GMainContext at opening time 2019-02-13 14:23:39 +01:00
lm32 hw/lm32/Makefile.objs: Conditionally build lm32 and milkmyst 2019-02-05 16:50:20 +01:00
m68k hw/m68k/Makefile.objs: Conditionally build boards 2019-02-05 16:50:19 +01:00
mem memory-device: rewrite address assignment using ranges 2019-01-09 22:09:31 -02:00
microblaze hw/microblaze/Makefile.objs: Create configs for petalogix and xilinx boards 2019-02-05 16:50:19 +01:00
mips hw/mips_int: hold BQL for all interrupt requests 2019-02-14 17:47:28 +01:00
misc cuda: decrease time delay before raising VIA SR interrupt and remove fast path 2019-02-17 21:54:02 +11:00
moxie hw/moxie/Makefile.objs: Conditionally build moxie 2019-02-05 16:50:20 +01:00
net hw/pci-host/Makefile.objs: make CONFIGS clear for PCI EXPRESS 2019-02-05 16:50:19 +01:00
nios2 hw/nios2/Makefile.objs: Conditionally build nios2 2019-02-05 16:50:20 +01:00
nvram fw_cfg: fix the life cycle and the name of "qemu_extra_params_fw" 2019-02-05 10:58:33 -05:00
openrisc hw/openrisc/Makefile.objs: Create CONFIG_* for openrisc 2019-02-05 16:50:21 +01:00
pci qdev: pass an Object * to qbus_set_hotplug_handler() 2019-02-17 21:54:02 +11:00
pci-bridge pci/shpc: perform unplug via the hotplug handler 2018-12-20 11:19:12 -05:00
pci-host build: actually use CONFIG_PAM 2019-02-05 16:50:19 +01:00
pcmcia hw: Clean up includes 2016-01-29 15:07:25 +00:00
ppc ppc patch queue 2019-02-19 2019-02-18 16:20:13 +00:00
rdma hw/rdma: modify struct initialization 2019-01-19 11:01:33 +02:00
riscv riscv: Ensure the kernel start address is correctly cast 2019-02-11 15:56:22 -08:00
s390x ppc patch queue 2019-02-19 2019-02-18 16:20:13 +00:00
scsi qdev: pass an Object * to qbus_set_hotplug_handler() 2019-02-17 21:54:02 +11:00
sd hw: sd: set category of the sd memory card 2019-01-30 10:24:20 +01:00
sh4 * cpu-exec fixes (Emilio, Laurent) 2019-02-05 19:39:22 +00:00
smbios hw/smbios: Move to the hw/firmware/ subdirectory 2018-12-19 16:48:16 -05:00
sparc qemu-sparc queue 2019-02-07 16:49:30 +00:00
sparc64 hw/sparc64: Explicitly set default_display = "std" 2019-02-14 11:46:30 +01:00
ssi aspeed/smc: snoop SPI transfers to fake dummy cycles 2019-01-29 11:46:05 +00:00
timer qapi: move RTC_CHANGE to the target schema 2019-02-18 14:44:05 +01:00
tpm tpm: clear RAM when "memory overwrite" requested 2019-01-17 21:10:57 -05:00
tricore hw/tricore/Makefile.objs: Create CONFIG_* for tricore 2019-02-05 16:50:21 +01:00
unicore32 hw/unicore32/puv3: Drop useless inclusion of "hw/i386/pc.h" 2019-02-06 15:54:12 +01:00
usb usb: remove unnecessary NULL device check from usb_ep_get() 2019-02-20 09:41:23 +01:00
vfio hw/vfio/Makefile.objs: Create new CONFIG_* variables for VFIO core and PCI 2019-02-05 16:50:21 +01:00
virtio hw/virtio: Use CONFIG_VIRTIO_PCI switch instead of CONFIG_PCI 2019-02-05 10:58:33 -05:00
watchdog hw/watchdog/wdt_i6300esb: remove a unnecessary comment 2019-01-11 15:46:55 +01:00
xen xen: fix xen-bus state model to allow frontend re-connection 2019-02-04 11:04:49 +00:00
xenpv xen: Replace few mentions of xend by libxl 2019-01-14 13:45:40 +00:00
xtensa hw/xtensa/Makefile.objs: Build xtensa_sim and xtensa_fpga conditionally 2019-02-05 16:50:20 +01:00
Makefile.objs hw/vfio/Makefile.objs: Create new CONFIG_* variables for VFIO core and PCI 2019-02-05 16:50:21 +01:00