Ladi Prosek 0b88dd9420 ivshmem: Improve MSI irqfd error handling ...

Adds a rollback path to ivshmem_enable_irqfd() and fixes
ivshmem_disable_irqfd() to bail if irqfd has not been enabled.

To reproduce, run:

  ivshmem-server -n 0

and QEMU with:

  -device ivshmem-doorbell,chardev=iv
  -chardev socket,path=/tmp/ivshmem_socket,id=iv

then load, unload, and load again the Windows driver, at the time of writing
available at:

https://github.com/virtio-win/kvm-guest-drivers-windows/tree/master/ivshmem

The issue is believed to have been masked by other guest drivers, notably
Linux ones, not enabling MSI-X on the device.

Signed-off-by: Ladi Prosek <lprosek@redhat.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Message-Id: <20171211072110.9058-4-lprosek@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

2018-02-07 14:09:24 +01:00

..

macio

maint: Fix macros with broken 'do/while(0); ' usage

2018-01-16 14:54:52 +01:00

a9scu.c

arm: Clean up includes

2016-01-29 15:07:23 +00:00

applesmc.c

Convert single line fprintf(.../n) to warn_report()

2017-09-19 14:09:34 +02:00

arm11scu.c

hw: explicitly include qemu/log.h

2016-05-19 16:42:29 +02:00

arm_integrator_debug.c

hw: explicitly include qemu/log.h

2016-05-19 16:42:29 +02:00

arm_l2x0.c

hw/misc: QOM'ify arm_l2x0.c

2016-06-14 15:59:14 +01:00

arm_sysctl.c

shutdown: Add source information to SHUTDOWN and RESET

2017-05-23 13:28:17 +02:00

aspeed_scu.c

hw/arm/aspeed: Unlock SCU when running kernel

2017-11-20 13:47:49 +00:00

aspeed_sdmc.c

Convert error_report() to warn_report()

2017-07-13 13:49:58 +02:00

auxbus.c

maint: Fix macros with broken 'do/while(0); ' usage

2018-01-16 14:54:52 +01:00

bcm2835_mbox.c

hw: explicitly include qemu/log.h

2016-05-19 16:42:29 +02:00

bcm2835_property.c

hw: explicitly include qemu/log.h

2016-05-19 16:42:29 +02:00

bcm2835_rng.c

bcm2835_rng: Use qcrypto_random_bytes() rather than rand()

2017-02-28 12:08:14 +00:00

cbus.c

Replace all occurances of __FUNCTION__ with __func__

2018-01-22 09:46:18 +01:00

debugexit.c

x86: Clean up includes

2016-01-29 15:07:22 +00:00

eccmemctl.c

hw/misc: QOM'ify eccmemctl.c

2017-06-02 05:54:43 +01:00

edu.c

pci: Add INTERFACE_CONVENTIONAL_PCI_DEVICE to Conventional PCI devices

2017-10-15 05:54:43 +03:00

exynos4210_clk.c

hw/arm/exynos: Fix Linux kernel division by zero for PLLs

2017-02-28 12:08:20 +00:00

exynos4210_pmu.c

hw/misc/exynos4210_pmu: Add support for system poweroff

2017-06-13 14:56:58 +01:00

exynos4210_rng.c

hw/misc: Add Exynos4210 Pseudo Random Number Generator

2017-07-11 11:21:26 +01:00

hyperv_testdev.c

Move target-* CPU file into a target/ folder

2016-12-20 21:52:12 +01:00

imx6_ccm.c

Remove empty statements

2017-12-18 17:07:02 +03:00

imx6_src.c

hw/misc/imx6_src: Don't crash trying to reset missing CPUs

2017-03-14 16:13:22 +00:00

imx25_ccm.c

imx: Use 'const char', not 'char const'

2016-09-22 18:13:09 +01:00

imx31_ccm.c

imx: Use 'const char', not 'char const'

2016-09-22 18:13:09 +01:00

imx_ccm.c

hw: explicitly include qemu/log.h

2016-05-19 16:42:29 +02:00

ivshmem.c

ivshmem: Improve MSI irqfd error handling

2018-02-07 14:09:24 +01:00

Makefile.objs

i386/pc: move vmport.c to hw/i386/

2017-12-18 17:07:02 +03:00

max111x.c

vmstate: error hint for failed equal checks

2017-06-28 11:18:44 +02:00

milkymist-hpdmc.c

milkymist: update specification URLs

2016-06-20 18:12:04 +02:00

milkymist-pfpu.c

char: rename CharDriverState Chardev

2017-01-27 18:07:59 +01:00

mips_cmgcr.c

mips_cmgcr: Convert to DEFINE_PROP_LINK

2017-07-14 12:04:43 +02:00

mips_cpc.c

hw/mips_cpc: make VP correctly start from the reset vector

2016-07-12 09:10:15 +01:00

mips_itu.c

cpu: move exec-all.h inclusion out of cpu.h

2016-05-19 16:42:29 +02:00

mmio_interface.c

maint: Fix macros with broken 'do/while(0); ' usage

2018-01-16 14:54:52 +01:00

mps2-scc.c

hw/mps2_scc: fix incorrect properties

2017-07-31 13:11:56 +01:00

msf2-sysreg.c

msf2: Microsemi Smartfusion2 System Register block

2017-09-21 16:36:56 +01:00

mst_fpga.c

hw/misc: QOM'ify mst_fpga.c

2016-06-14 15:59:14 +01:00

omap_clk.c

Replace all occurances of __FUNCTION__ with __func__

2018-01-22 09:46:18 +01:00

omap_gpmc.c

Replace all occurances of __FUNCTION__ with __func__

2018-01-22 09:46:18 +01:00

omap_l4.c

Replace all occurances of __FUNCTION__ with __func__

2018-01-22 09:46:18 +01:00

omap_sdrc.c

Replace all occurances of __FUNCTION__ with __func__

2018-01-22 09:46:18 +01:00

omap_tap.c

Replace all occurances of __FUNCTION__ with __func__

2018-01-22 09:46:18 +01:00

pc-testdev.c

os-posix: include sys/mman.h

2016-06-16 18:39:03 +02:00

pci-testdev.c

pci: Add INTERFACE_CONVENTIONAL_PCI_DEVICE to Conventional PCI devices

2017-10-15 05:54:43 +03:00

puv3_pm.c

unicore: Clean up includes

2016-01-29 15:07:22 +00:00

pvpanic.c

hw/misc/pvpanic: extract public API from i386/pc to "hw/misc/pvpanic.h"

2017-12-18 17:07:02 +03:00

sga.c

misc: remove old i386 dependency

2017-12-18 17:07:02 +03:00

slavio_misc.c

hw/misc: QOM'ify slavio_misc.c

2017-06-02 05:54:43 +01:00

stm32f2xx_syscfg.c

maint: Fix macros with broken 'do/while(0); ' usage

2018-01-16 14:54:52 +01:00

tmp105.c

Replace all occurances of __FUNCTION__ with __func__

2018-01-22 09:46:18 +01:00

tmp105.h

hw: move private headers to hw/ subdirectories.

2013-04-08 18:13:16 +02:00

tmp421.c

hw/misc: add a TMP42{1, 2, 3} device model

2017-06-13 14:56:59 +01:00

trace-events

msf2: Microsemi Smartfusion2 System Register block

2017-09-21 16:36:56 +01:00

unimp.c

unimplemented-device: Remove user_creatable flag

2017-05-17 10:37:01 -03:00

vmcoreinfo.c

dump-guest-memory.py: fix "You can't do that without a process to debug"

2018-01-02 14:49:54 +01:00

zynq_slcr.c

maint: Fix macros with broken 'do/while(0); ' usage

2018-01-16 14:54:52 +01:00

zynq-xadc.c

hw: explicitly include qemu/log.h

2016-05-19 16:42:29 +02:00