linux/include
Christoffer Dall faa1b46c3e arm/arm64: KVM: vgic: Improve handling of GICD_I{CS}PENDRn
Writes to GICD_ISPENDRn and GICD_ICPENDRn are currently not handled
correctly for level-triggered interrupts.  The spec states that for
level-triggered interrupts, writes to the GICD_ISPENDRn activate the
output of a flip-flop which is in turn or'ed with the actual input
interrupt signal.  Correspondingly, writes to GICD_ICPENDRn simply
deactivates the output of that flip-flop, but does not (of course) affect
the external input signal.  Reads from GICC_IAR will also deactivate the
flip-flop output.

This requires us to track the state of the level-input separately from
the state in the flip-flop.  We therefore introduce two new variables on
the distributor struct to track these two states.  Astute readers may
notice that this is introducing more state than required (because an OR
of the two states gives you the pending state), but the remaining vgic
code uses the pending bitmap for optimized operations to figure out, at
the end of the day, if an interrupt is pending or not on the distributor
side.  Refactoring the code to consider the two state variables all the
places where we currently access the precomputed pending value, did not
look pretty.

Signed-off-by: Christoffer Dall <christoffer.dall@linaro.org>
2014-09-18 18:44:31 -07:00
..
acpi ACPI and power management updates for 3.17-rc1 2014-08-06 20:34:19 -07:00
asm-generic This is the bulk of GPIO changes for the v3.17 development 2014-08-08 18:00:35 -07:00
clocksource ARM: pxa: Add non device-tree timer link to clocksource 2014-07-23 12:02:39 +02:00
crypto Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security 2014-08-06 08:06:39 -07:00
drm Merge branch 'linux-3.17' of git://anongit.freedesktop.org/git/nouveau/linux-2.6 2014-08-09 17:46:39 -07:00
dt-bindings Merge branch 'for-linus' of git://git.infradead.org/users/vkoul/slave-dma 2014-08-11 07:14:01 -07:00
keys
kvm arm/arm64: KVM: vgic: Improve handling of GICD_I{CS}PENDRn 2014-09-18 18:44:31 -07:00
linux Merge remote-tracking branch 'kvm/next' into queue 2014-09-18 18:15:32 -07:00
math-emu
media [media] media: atmel-isi: add v4l2 async probe support 2014-07-30 19:35:06 -03:00
memory
misc
net tcp: don't allow syn packets without timestamps to pass tcp_tw_recycle logic 2014-08-14 14:38:54 -07:00
pcmcia
ras
rdma Merge branches 'core', 'cxgb4', 'ipoib', 'iser', 'iwcm', 'mad', 'misc', 'mlx4', 'mlx5', 'ocrdma' and 'srp' into for-next 2014-08-14 08:58:04 -07:00
rxrpc
scsi SCSI misc on 20140815 2014-08-15 18:28:58 -06:00
soc/tegra
sound ASoC: Updates for v3.17 2014-08-04 18:28:21 +02:00
target
trace kvm: ioapic: conditionally delay irq delivery duringeoi broadcast 2014-09-16 14:44:48 +02:00
uapi KVM: device: add simple registration mechanism for kvm_device_ops 2014-09-17 13:10:08 +02:00
video fbdev changes for 3.17 2014-08-08 18:09:33 -07:00
xen - Remove unused V2 grant table support. 2014-08-07 11:33:15 -07:00
Kbuild