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6ab3fc32ea
xemu/hw/arm
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Daniel P. Berrange 6ab3fc32ea hw: replace most use of qemu_chr_fe_write with qemu_chr_fe_write_all 
The qemu_chr_fe_write method will return -1 on EAGAIN if the
chardev backend write would block. Almost no callers of the
qemu_chr_fe_write() method check the return value, instead
blindly assuming data was successfully sent. In most cases
this will lead to silent data loss on interactive consoles,
but in some cases (eg RNG EGD) it'll just cause corruption
of the protocol being spoken.

We unfortunately can't fix the virtio-console code, due to
a bug in the Linux guest drivers, which would cause the
entire Linux kernel to hang if we delay processing of the
incoming data in any way. Fixing this requires first fixing
the guest driver to not hold spinlocks while writing to the
hvc device backend.

Fixes bug: https://bugs.launchpad.net/qemu/+bug/1586756

Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
Message-Id: <1473170165-540-4-git-send-email-berrange@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2016-09-13 19:09:42 +02:00
..
allwinner-a10.c hw: explicitly include qemu-common.h and cpu.h 2016-03-22 22:20:17 +01:00
armv7m.c hw/arm: QOM'ify armv7m.c 2016-05-12 13:40:48 +01:00
ast2400.c ast2400: add a memory controller device model 2016-09-06 19:52:17 +01:00
bcm2835_peripherals.c hw/char: QOM'ify pl011 model 2016-06-06 16:59:31 +01:00
bcm2836.c hw/arm/bcm2836: Wire up CPU timer interrupts correctly 2016-04-04 17:33:51 +01:00
boot.c ARM: Virt: Set numa-node-id for cpu and memory nodes 2016-05-12 13:22:27 +01:00
collie.c explicitly include qom/cpu.h 2016-05-19 16:42:27 +02:00
cubieboard.c hw: explicitly include qemu-common.h and cpu.h 2016-03-22 22:20:17 +01:00
digic_boards.c hw: explicitly include qemu-common.h and cpu.h 2016-03-22 22:20:17 +01:00
digic.c hw/char: QOM'ify digic-uart model 2016-06-06 16:59:31 +01:00
exynos4_boards.c hw: explicitly include qemu-common.h and cpu.h 2016-03-22 22:20:17 +01:00
exynos4210.c hw: explicitly include qemu-common.h and cpu.h 2016-03-22 22:20:17 +01:00
fsl-imx6.c i.MX: split the GPT timer implementation into per SOC definitions 2016-07-07 13:47:01 +01:00
fsl-imx25.c i.MX: split the GPT timer implementation into per SOC definitions 2016-07-07 13:47:01 +01:00
fsl-imx31.c i.MX: split the GPT timer implementation into per SOC definitions 2016-07-07 13:47:01 +01:00
gumstix.c machine: Use type_init() to register machine classes 2016-03-16 15:34:05 -03:00
highbank.c hw/char: QOM'ify pl011 model 2016-06-06 16:59:31 +01:00
imx25_pdk.c hw: explicitly include qemu-common.h and cpu.h 2016-03-22 22:20:17 +01:00
integratorcp.c hw/char: QOM'ify pl011 model 2016-06-06 16:59:31 +01:00
kzm.c hw: explicitly include qemu-common.h and cpu.h 2016-03-22 22:20:17 +01:00
mainstone.c include/qemu/osdep.h: Don't include qapi/error.h 2016-03-22 22:20:15 +01:00
Makefile.objs i.MX: Add sabrelite i.MX6 emulation. 2016-05-12 13:22:29 +01:00
musicpal.c qapi: Change Netdev into a flat union 2016-07-19 20:18:02 +02:00
netduino2.c include/qemu/osdep.h: Don't include qapi/error.h 2016-03-22 22:20:15 +01:00
nseries.c vl: Eliminate usb_enabled() 2016-06-13 13:24:41 +02:00
omap1.c util: move declarations out of qemu-common.h 2016-03-22 22:20:17 +01:00
omap2.c hw: replace most use of qemu_chr_fe_write with qemu_chr_fe_write_all 2016-09-13 19:09:42 +02:00
omap_sx1.c include/qemu/osdep.h: Don't include qapi/error.h 2016-03-22 22:20:15 +01:00
palm.c include/qemu/osdep.h: Don't include qapi/error.h 2016-03-22 22:20:15 +01:00
palmetto-bmc.c ast2400: create SPI flash slaves 2016-07-04 13:15:22 +01:00
pxa2xx_gpio.c hw: explicitly include qemu/log.h 2016-05-19 16:42:29 +02:00
pxa2xx_pic.c hw/arm: QOM'ify pxa2xx_pic.c 2016-05-12 13:42:08 +01:00
pxa2xx.c hw: replace most use of qemu_chr_fe_write with qemu_chr_fe_write_all 2016-09-13 19:09:42 +02:00
raspi.c hw: explicitly include qemu-common.h and cpu.h 2016-03-22 22:20:17 +01:00
realview.c vl: Eliminate usb_enabled() 2016-06-13 13:24:41 +02:00
sabrelite.c m25p80: qdev-ify drive property 2016-07-04 13:15:22 +01:00
spitz.c ssi: change ssi_slave_init to be a realize ops 2016-07-04 13:15:22 +01:00
stellaris.c hw/char: QOM'ify pl011 model 2016-06-06 16:59:31 +01:00
stm32f205_soc.c hw/char: QOM'ify stm32f2xx_usart model 2016-06-06 16:59:32 +01:00
strongarm.c hw: replace most use of qemu_chr_fe_write with qemu_chr_fe_write_all 2016-09-13 19:09:42 +02:00
strongarm.h Clean up ill-advised or unusual header guards 2016-07-12 16:20:46 +02:00
sysbus-fdt.c include/qemu/osdep.h: Don't include qapi/error.h 2016-03-22 22:20:15 +01:00
tosa.c ssi: change ssi_slave_init to be a realize ops 2016-07-04 13:15:22 +01:00
trace-events trace-events: fix first line comment in trace-events 2016-08-12 10:36:01 +01:00
versatilepb.c vl: Eliminate usb_enabled() 2016-06-13 13:24:41 +02:00
vexpress.c hw/char: QOM'ify pl011 model 2016-06-06 16:59:31 +01:00
virt-acpi-build.c ARM: ACPI: fix the AML ID format for CPU devices 2016-09-06 19:52:17 +01:00
virt.c hw/arm/virt: tcg: adjust MPIDR like KVM 2016-07-14 16:51:37 +01:00
xilinx_zynq.c m25p80: qdev-ify drive property 2016-07-04 13:15:22 +01:00
xlnx-ep108.c m25p80: qdev-ify drive property 2016-07-04 13:15:22 +01:00
xlnx-zynqmp.c arm: xlnx-zynqmp: Add xlnx-dp and xlnx-dpdma 2016-06-14 16:01:03 +01:00
z2.c ssi: change ssi_slave_init to be a realize ops 2016-07-04 13:15:22 +01:00