Evgeny Yakovlev 72aa364b1d ehci: faster frame index calculation for skipped frames ... ehci_update_frindex takes time linearly proportional to a number of uframes to calculate new frame index and raise FLR interrupts, which is a problem for large amounts of uframes. If we experience large delays between echi timer callbacks (i.e. because other periodic handlers have taken a lot of time to complete) we get a lot of skipped frames which then delay ehci timer callback more and this leads to deadlocking the system when ehci schedules next callback to be too soon. Observable behaviour is qemu consuming 100% host CPU time while guest is unresponsive. This misbehavior could happen for a while and QEMU does not get out from this state automatically without the patch. This change makes ehci_update_frindex execute in constant time. Signed-off-by: Evgeny Yakovlev <eyakovlev@virtuozzo.com> Signed-off-by: Denis V. Lunev <den@openvz.org> Message-id: 1469638520-32706-1-git-send-email-den@openvz.org CC: Gerd Hoffmann <kraxel@redhat.com> Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>		2016-08-02 13:35:24 +02:00
..
9pfs	9pfs: Wrap in vmstate	2016-07-21 20:44:20 +03:00
acpi	opts-visitor: Favor new visit_free() function	2016-07-06 10:52:04 +02:00
alpha	hw/alpha: fix PCI bus initialization	2016-07-20 19:30:26 +03:00
arm	qapi: Change Netdev into a flat union	2016-07-19 20:18:02 +02:00
audio	Clean up decorations and whitespace around header guards	2016-07-12 16:20:46 +02:00
block	pc, pci, virtio: new features, cleanups, fixes	2016-07-21 20:12:37 +01:00
bt	hw/bt: Don't use cpu_to_*w() and *_to_cpup()	2016-07-12 15:08:53 +01:00
char	virtio-serial: Wrap in vmstate	2016-07-21 20:44:20 +03:00
core	qdev: ignore GlobalProperty.errp for hotplugged devices	2016-07-27 11:25:06 -03:00
cpu	cpu: Abstract CPU core type	2016-06-17 16:33:48 +10:00
cris	cris: Fix broken header guard in hw/cris/boot.h	2016-07-12 16:20:46 +02:00
display	hw/virtio-pci: fix virtio behaviour	2016-07-29 00:07:10 +03:00
dma	dma: Add Xilinx Zynq devcfg device model	2016-07-04 13:15:22 +01:00
gpio	hw/gpio: QOM'ify zaurus.c	2016-06-14 15:59:13 +01:00
i2c	ICH9 SMB: make TYPE_ICH9_SMB_DEVICE macro public	2016-06-29 14:03:46 +02:00
i386	pc, pci, virtio: cleanups, fixes	2016-07-29 11:57:01 +01:00
ide	ide: fix halted IO segfault at reset	2016-07-28 17:34:19 -04:00
input	virtio-input: Wrap in vmstate	2016-07-21 20:44:20 +03:00
intc	pc, pci, virtio: new features, cleanups, fixes	2016-07-21 20:12:37 +01:00
ipack	ipack: Update e-mail address	2016-05-18 15:04:27 +03:00
ipmi	hw/ipmi: fix spelling	2016-06-07 18:02:48 +03:00
isa	ich9: implement SCI_IRQ_SEL register	2016-06-29 14:03:48 +02:00
lm32	Clean up decorations and whitespace around header guards	2016-07-12 16:20:46 +02:00
m68k	hw: explicitly include qemu-common.h and cpu.h	2016-03-22 22:20:17 +01:00
mem	nvdimm: fix memory leak in error code path	2016-07-20 19:30:26 +03:00
microblaze	Clean up ill-advised or unusual header guards	2016-07-12 16:20:46 +02:00
mips	hw/mips_malta: Fix YAMON API print routine	2016-07-28 11:24:00 +01:00
misc	kvm-irqchip: do explicit commit when update irq	2016-07-21 20:44:19 +03:00
moxie	hw: explicitly include qemu-common.h and cpu.h	2016-03-22 22:20:17 +01:00
net	vhost: add vhost_net_set_backend()	2016-07-29 00:33:49 +03:00
nvram	spapr: fix spapr-nvram migration	2016-07-25 10:19:30 +10:00
openrisc	hw: explicitly include qemu-common.h and cpu.h	2016-03-22 22:20:17 +01:00
pci	pcie: fix link active status bit migration	2016-07-29 00:07:08 +03:00
pci-bridge	hw/pci-bridge: Convert pxb initialization functions to Error	2016-07-29 00:07:09 +03:00
pci-host	apb: convert init to realize	2016-07-29 00:07:09 +03:00
pcmcia	hw: Clean up includes	2016-01-29 15:07:25 +00:00
ppc	spapr: Prevent boot CPU core removal	2016-07-29 12:02:31 +10:00
s390x	s390x/css: provide a dev_path for css devices	2016-07-20 15:47:25 +02:00
scsi	mptsas: Fix a migration compatible issue	2016-07-29 06:09:55 +03:00
sd	ssi: change ssi_slave_init to be a realize ops	2016-07-04 13:15:22 +01:00
sh4	Clean up ill-advised or unusual header guards	2016-07-12 16:20:46 +02:00
smbios	ipmi: Add SMBIOS table entry	2016-06-24 05:13:57 +03:00
sparc	trace: split out trace events for hw/sparc/ directory	2016-06-20 17:22:16 +01:00
sparc64	util: move declarations out of qemu-common.h	2016-03-22 22:20:17 +01:00
ssi	ast2400: pretend DMAs are done for U-boot	2016-07-14 16:51:38 +01:00
timer	MIPS patches 2016-07-12	2016-07-12 12:34:41 +01:00
tpm	Clean up header guards that don't match their file name	2016-07-12 16:19:16 +02:00
tricore	hw: explicitly include qemu-common.h and cpu.h	2016-03-22 22:20:17 +01:00
unicore32	hw: explicitly include qemu-common.h and cpu.h	2016-03-22 22:20:17 +01:00
usb	ehci: faster frame index calculation for skipped frames	2016-08-02 13:35:24 +02:00
vfio	kvm-irqchip: do explicit commit when update irq	2016-07-21 20:44:19 +03:00
virtio	pc, pci, virtio: cleanups, fixes	2016-07-29 11:57:01 +01:00
watchdog	nmi: remove x86 specific nmi handling	2016-05-23 16:53:46 +02:00
xen	Clean up decorations and whitespace around header guards	2016-07-12 16:20:46 +02:00
xenpv	Clean up decorations and whitespace around header guards	2016-07-12 16:20:46 +02:00
xtensa	target-xtensa: xtfpga: fix FLASH interface width	2016-07-14 13:59:44 +03:00
Makefile.objs	Add a base IPMI interface	2015-12-22 18:39:19 +02:00