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0b88dd9420
qemu/hw/misc
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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