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Markus Armbruster 2d1d422d11 ivshmem: Leave INTx alone when using MSI-X 
The ivshmem device can either use MSI-X or legacy INTx for interrupts.

With MSI-X enabled, peer interrupt events trigger an MSI as they
should.  But software can still raise INTx via interrupt status and
mask register in BAR 0.  This is explicitly prohibited by PCI Local
Bus Specification Revision 3.0, section 6.8.3.3:

    While enabled for MSI or MSI-X operation, a function is prohibited
    from using its INTx# pin (if implemented) to request service (MSI,
    MSI-X, and INTx# are mutually exclusive).

Fix the device model to leave INTx alone when using MSI-X.

Document that we claim to use INTx in config space even when we don't.
Unlike other devices, ivshmem does *not* use INTx when configured for
MSI-X and MSI-X isn't enabled by software.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Message-Id: <1458066895-20632-21-git-send-email-armbru@redhat.com>
 		2016-03-21 21:29:01 +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: Leave INTx alone when using MSI-X 2016-03-21 21:29:01 +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