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linux/include/xen
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Stefano Stabellini 68c2c39a76 xen: do not map the same GSI twice in PVHVM guests. 
PV on HVM guests map GSIs into event channels. At restore time the
event channels are resumed by restore_pirqs.

Device drivers might try to register the same GSI again through ACPI at
restore time, but the GSI has already been mapped and bound by
restore_pirqs. This patch detects these situations and avoids
 mapping the same GSI multiple times.

Without this patch we get:
(XEN) irq.c:2235: dom4: pirq 23 or emuirq 28 already mapped
and waste a pirq.

CC: stable@kernel.org
Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
2012-05-21 14:11:36 -04:00
..
interface One tiny feature that accidentally got lost in the initial git pull: 2012-03-24 12:20:25 -07:00
acpi.h xen/acpi/sleep: Enable ACPI sleep via the __acpi_os_prepare_sleep 2012-05-07 15:33:18 -04:00
balloon.h xen-balloon: convert sysdev_class to a regular subsystem 2011-12-14 15:32:50 -08:00
events.h xen: do not map the same GSI twice in PVHVM guests. 2012-05-21 14:11:36 -04:00
evtchn.h xen: add /dev/xen/evtchn driver 2009-03-30 09:26:49 -07:00
features.h
gntalloc.h xen/gntalloc,gntdev: Add unmap notify ioctl 2011-02-14 14:16:17 -05:00
gntdev.h xen/gntalloc,gntdev: Add unmap notify ioctl 2011-02-14 14:16:17 -05:00
grant_table.h xenbus: Add support for xenbus backend in stub domain 2012-05-21 09:53:18 -04:00
hvc-console.h treewide: use __printf not __attribute__((format(printf,...))) 2011-10-31 17:30:54 -07:00
hvm.h x86/xen: event channels delivery on HVM. 2010-07-22 16:45:59 -07:00
Kbuild xen: add privcmd driver 2010-10-20 16:22:29 -07:00
page.h xen: allow balloon driver to use more than one memory region 2011-09-29 11:12:10 -04:00
platform_pci.h xen: Remove hanging references to CONFIG_XEN_PLATFORM_PCI 2011-11-16 12:13:42 -05:00
privcmd.h xen: fix header export to userspace 2010-11-16 10:57:05 -08:00
swiotlb-xen.h X86 & IA64: adapt for dma_map_ops changes 2012-03-28 16:36:31 +02:00
tmem.h xen/tmem: cleanup 2012-03-20 15:34:18 -04:00
xen-ops.h Disintegrate asm/system.h for IA64 2012-03-28 18:30:02 +01:00
xen.h xen: move Xen-testing predicates to common header 2009-11-04 08:47:24 -08:00
xenbus_dev.h xenbus: Add support for xenbus backend in stub domain 2012-05-21 09:53:18 -04:00
xenbus.h include/ and checkpatch: prefer __scanf to __attribute__((format(scanf,...) 2012-03-23 16:58:36 -07:00
xencomm.h xen: import arch generic part of xencomm 2008-04-24 23:57:32 +02:00