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Markus Armbruster 5503e28504 ivshmem: Implement shm=... with a memory backend 
ivshmem has its very own code to create and map shared memory.
Replace that with an implicitly created memory backend.  Reduces the
number of ways we create BAR 2 from three to two.

The memory-backend-file is currently available only with CONFIG_LINUX,
so this adds a second Linuxism to ivshmem (the other one is eventfd).
Should we ever need to make it portable to systems where
memory-backend-file can't be made to serve, we could create a
memory-backend-shmem that allocates memory with shm_open().

Bonus fix: shared memory files are now created with permissions 0655
instead of 0777.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Message-Id: <1458066895-20632-32-git-send-email-armbru@redhat.com>
2016-03-21 21:29:02 +01:00
..
9pfs all: Clean up includes 2016-02-23 12:43:05 +00:00
acpi module: Rename machine_init() to opts_init() 2016-03-16 15:54:23 -03:00
alpha loader: Add data swap option to load-elf 2016-03-04 11:30:21 +00:00
arm machine: Use type_init() to register machine classes 2016-03-16 15:34:05 -03:00
audio all: Clean up includes 2016-02-23 12:43:05 +00:00
block blockdev: Split monitor reference from BB creation 2016-03-17 15:47:56 +01:00
bt hw: Clean up includes 2016-01-29 15:07:25 +00:00
char bcm2835_aux: add emulation of BCM2835 AUX (aka UART1) block 2016-03-16 17:42:18 +00:00
core loader: Add data swap option to load-elf 2016-03-04 11:30:21 +00:00
cpu hw/intc/arm_gic.c: Implement GICv2 GICC_DIR 2016-03-04 11:30:22 +00:00
cris loader: Add data swap option to load-elf 2016-03-04 11:30:21 +00:00
display bcm2835_fb: add framebuffer device for Raspberry Pi 2016-03-16 17:42:18 +00:00
dma bcm2835_dma: add emulation of Raspberry Pi DMA controller 2016-03-16 17:42:18 +00:00
gpio ARM: PL061: Checking register r/w accesses to reserved area 2016-02-26 15:09:42 +00:00
i2c i.MX: Add missing descriptions in devices. 2016-03-16 17:42:18 +00:00
i386 kvm: x86: q35: Add support for -machine kernel_irqchip=split for q35 2016-03-15 18:23:33 +01:00
ide ahci: prohibit "restarting" the FIS or CLB engines 2016-02-10 13:29:40 -05:00
input ui: Shorten references into InputEvent 2016-03-05 10:41:55 +01:00
intc hw/intc: Add (new) ASPEED VIC device model 2016-03-16 17:42:18 +00:00
ipack hw: Clean up includes 2016-01-29 15:07:25 +00:00
ipmi ipmi: add some local variables in ipmi_sdr_init 2016-03-11 16:59:13 +02:00
isa ich9lpc: fix typo 2016-03-11 16:45:21 +02:00
lm32 machine: Use type_init() to register machine classes 2016-03-16 15:34:05 -03:00
m68k loader: Add data swap option to load-elf 2016-03-04 11:30:21 +00:00
mem pc-dimm: fix error handling in pc_dimm_check_memdev_is_busy() 2016-03-11 14:55:15 +02:00
microblaze loader: Add data swap option to load-elf 2016-03-04 11:30:21 +00:00
mips machine: Use type_init() to register machine classes 2016-03-16 15:34:05 -03:00
misc ivshmem: Implement shm=... with a memory backend 2016-03-21 21:29:02 +01:00
moxie loader: Add data swap option to load-elf 2016-03-04 11:30:21 +00:00
net i.MX: Add missing descriptions in devices. 2016-03-16 17:42:18 +00:00
nvram fw_cfg: expose control register size in fw_cfg.h 2016-03-08 10:46:30 +01:00
openrisc loader: Add data swap option to load-elf 2016-03-04 11:30:21 +00:00
pci msi_supported -> msi_nonbroken 2016-03-11 16:45:21 +02:00
pci-bridge pxb: cleanup 2016-03-11 16:59:12 +02:00
pci-host loader: Add data swap option to load-elf 2016-03-04 11:30:21 +00:00
pcmcia hw: Clean up includes 2016-01-29 15:07:25 +00:00
ppc machine: Use type_init() to register machine classes 2016-03-16 15:34:05 -03:00
s390x machine: Use type_init() to register machine classes 2016-03-16 15:34:05 -03:00
scsi scsi-bus: Remove tape command from scsi_req_xfer 2016-03-07 17:56:23 +01:00
sd sd: Fix "info qtree" on boards with SD cards 2016-03-16 17:42:19 +00:00
sh4 sh4: Clean up includes 2016-01-29 15:07:24 +00:00
smbios module: Rename machine_init() to opts_init() 2016-03-16 15:54:23 -03:00
sparc machine: Use type_init() to register machine classes 2016-03-16 15:34:05 -03:00
sparc64 machine: Use type_init() to register machine classes 2016-03-16 15:34:05 -03:00
ssi hw: Clean up includes 2016-01-29 15:07:25 +00:00
timer hw/timer: Add ASPEED timer device model 2016-03-16 17:42:18 +00:00
tpm hw: Clean up includes 2016-01-29 15:07:25 +00:00
tricore loader: Add data swap option to load-elf 2016-03-04 11:30:21 +00:00
unicore32 unicore: Clean up includes 2016-01-29 15:07:22 +00:00
usb usb-redirect: Avoid double free of data 2016-02-29 11:45:26 +01:00
vfio vfio: Eliminate vfio_container_ioctl() 2016-03-16 09:55:11 +11:00
virtio virtio-pci: call pci reset variant when guest requests reset. 2016-03-11 16:45:21 +02:00
watchdog watchdog/diag288: avoid race condition on expired watchdog 2016-03-01 12:15:28 +01:00
xen xen: drop XenXC and associated interface wrappers 2016-02-10 12:01:24 +00:00
xenpv xen: Clean up includes 2016-01-29 15:07:23 +00:00
xtensa machine: Use type_init() to register machine classes 2016-03-16 15:34:05 -03:00
Makefile.objs Add a base IPMI interface 2015-12-22 18:39:19 +02:00