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Cornelia Huck b0e5d90ebc dataplane: endianness-aware accesses 
The vring.c code currently assumes that guest and host endianness match,
which is not true for a number of cases:

- emulating targets with a different endianness than the host
- bi-endian targets, where the correct endianness depends on the virtio
  device
- upcoming support for the virtio-1 standard mandates little-endian
  accesses even for big-endian targets and hosts

Make sure to use accessors that depend on the virtio device.

Note that dataplane now needs to be built per-target.

Cc: Stefan Hajnoczi <stefanha@redhat.com>
Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: Fam Zheng <famz@redhat.com>
Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
Tested-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Message-id: 1422289602-17874-2-git-send-email-cornelia.huck@de.ibm.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2015-02-16 15:07:16 +00:00
..
9pfs rcu: add rcu library 2015-02-02 16:55:10 +01:00
acpi pci, pc, virtio fixes and cleanups 2015-01-27 13:17:30 +00:00
alpha ide: Update ide_drive_get to be HBA agnostic 2014-10-03 10:30:33 +01:00
arm target-arm: Add feature parsing to virt 2015-02-13 05:46:08 +00:00
audio sb16: fix interrupt acknowledgement 2015-01-22 11:04:18 +01:00
block dataplane: endianness-aware accesses 2015-02-16 15:07:16 +00:00
bt
char virtio: Fix warning caused by missing 'static' attribute 2015-02-10 10:26:05 +03:00
core fw_cfg: fix typos in comments: patch -> path 2015-02-10 09:27:19 +03:00
cpu icc_bus: fix typo ICC_BRIGDE -> ICC_BRIDGE 2014-11-03 19:51:56 +03:00
cris hw: Convert from BlockDriverState to BlockBackend, mostly 2014-10-20 14:02:25 +02:00
display vga: Fix warning caused by missing 'static' attribute 2015-02-10 10:26:05 +03:00
dma vmstate: accept QEMUTimer in VMSTATE_TIMER*, add VMSTATE_TIMER_PTR* 2015-01-26 12:22:44 +01:00
gpio PPC: Add MPC8XXX gpio controller 2014-11-04 23:26:12 +01:00
i2c
i386 pci, pc, virtio fixes and cleanups 2015-01-27 13:17:30 +00:00
ide atapi migration: Throw recoverable error to avoid recovery 2015-02-06 17:24:20 +01:00
input Add trace to ps2.c. 2015-02-10 09:27:20 +03:00
intc apic: do not dereference pointer before it is checked for NULL 2015-01-26 12:27:05 +01:00
ipack
isa vmstate: accept QEMUTimer in VMSTATE_TIMER*, add VMSTATE_TIMER_PTR* 2015-01-26 12:22:44 +01:00
lm32 acpi-build: make ROMs RAM blocks resizeable 2015-01-08 13:17:55 +02:00
m68k hw/core/loader: implement address translation in uimage loader 2014-11-03 00:59:10 +03:00
mem pc-dimm: Add Error argument to pc_existing_dimms_capacity 2015-01-27 14:46:18 +02:00
microblaze hw/core/loader: implement address translation in uimage loader 2014-11-03 00:59:10 +03:00
mips mips_mipssim: fix use-after-free for filename 2014-11-17 11:41:03 +01:00
misc hw: misc, add educational driver 2015-01-26 12:26:55 +01:00
moxie memory: add parameter errp to memory_region_init_ram 2014-09-09 13:41:43 +02:00
net rtl8139: g_malloc() can't fail, bury dead error handling 2015-02-10 09:27:20 +03:00
nvram fw_cfg: fix endianness in fw_cfg_data_mem_read() / _write() 2015-01-16 11:54:30 +00:00
openrisc hw/core/loader: implement address translation in uimage loader 2014-11-03 00:59:10 +03:00
pci migration: Append JSON description of migration stream 2015-02-05 17:16:14 +01:00
pci-bridge qdev: HotplugHandler: Rename unplug callback to unplug_request 2014-10-15 05:03:13 +02:00
pci-host pci: Add generic PCIe host bridge 2015-02-13 05:46:07 +00:00
pcmcia hmp: Remove "info pcmcia" 2014-10-24 12:19:11 +01:00
ppc spapr_vio: Pair g_malloc() with g_free(), not free() 2015-02-10 09:27:20 +03:00
s390x s390x/ipl: Improved code indentation in s390_ipl_init() 2015-02-03 13:42:40 +01:00
scsi dataplane: endianness-aware accesses 2015-02-16 15:07:16 +00:00
sd vmstate: accept QEMUTimer in VMSTATE_TIMER*, add VMSTATE_TIMER_PTR* 2015-01-26 12:22:44 +01:00
sh4 hw: Convert from BlockDriverState to BlockBackend, mostly 2014-10-20 14:02:25 +02:00
sparc fw_cfg: move boards to fw_cfg_init_io() / fw_cfg_init_mem() 2014-12-22 23:39:15 +00:00
sparc64 fw_cfg: move boards to fw_cfg_init_io() / fw_cfg_init_mem() 2014-12-22 23:39:15 +00:00
ssi
timer fix mc146818rtc wrong subsection name to avoid vmstate_subsection_load() fail 2015-02-05 17:16:14 +01:00
tpm Drop superfluous conditionals around g_strdup() 2014-12-10 11:30:55 +03:00
tricore target-tricore: check return value before using it 2014-11-02 10:04:34 +03:00
unicore32 memory: add parameter errp to memory_region_init_ram 2014-09-09 13:41:43 +02:00
usb usb: Pair g_malloc() with g_free(), not free() 2015-02-10 09:27:20 +03:00
vfio vfio: Fix debug message compile error 2015-02-10 10:25:44 -07:00
virtio dataplane: endianness-aware accesses 2015-02-16 15:07:16 +00:00
watchdog vmstate: accept QEMUTimer in VMSTATE_TIMER*, add VMSTATE_TIMER_PTR* 2015-01-26 12:22:44 +01:00
xen xen-pt: Fix PCI devices re-attach failed 2015-01-13 11:49:46 +00:00
xenpv hw: Convert from BlockDriverState to BlockBackend, mostly 2014-10-20 14:02:25 +02:00
xtensa hw/xtensa/xtfpga: treat uImage load address as virtual 2014-11-03 01:00:37 +03:00
Makefile.objs vfio: move hw/misc/vfio.c to hw/vfio/pci.c Move vfio.h into include/hw/vfio 2014-12-19 15:24:06 -07:00