qemu-patch-raspberry4/hw
Andrew Jones a43e68a08b virt-acpi-build: add always-on property for timer
This patch is the ACPI equivalent of "hw/arm/virt: Add always-on
property to the virt board timer". The timer is always on, and
thus setting this informs Linux that it may switch off the periodic
timer. Switching off the periodic timer substantially reduces the
number of interrupts the host needs to inject.

Testing note: AArch64 guests (the only ones currently booting with
ACPI) do not actually need this patch to determine it can turn the
periodic timer off. I therefore used a hacked guest kernel to ensure
this patch works as the equivalent DT patch does.

Signed-off-by: Andrew Jones <drjones@redhat.com>
Reviewed-by: Shannon Zhao <shannon.zhao@linaro.org>
Message-id: 1453380893-26174-1-git-send-email-drjones@redhat.com
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2016-02-03 13:46:32 +00:00
..
9pfs 9pfs: Clean up includes 2016-01-29 15:07:23 +00:00
acpi x86: Clean up includes 2016-01-29 15:07:22 +00:00
alpha alpha: Clean up includes 2016-01-29 15:07:23 +00:00
arm virt-acpi-build: add always-on property for timer 2016-02-03 13:46:32 +00:00
audio audio: Clean up includes 2016-02-02 13:57:31 +01:00
block virtio-blk: Functions for op blocker management 2016-02-02 17:50:46 +01:00
bt hw: Clean up includes 2016-01-29 15:07:25 +00:00
char hw: Clean up includes 2016-01-29 15:07:25 +00:00
core hw/core: Clean up includes 2016-01-29 15:07:25 +00:00
cpu hw: Clean up includes 2016-01-29 15:07:25 +00:00
cris cris: Clean up includes 2016-01-29 15:07:24 +00:00
display virtio-gpu: block any rendering until client (ui) is done 2016-02-03 10:41:36 +01:00
dma hw: Clean up includes 2016-01-29 15:07:25 +00:00
gpio hw: Clean up includes 2016-01-29 15:07:25 +00:00
i2c hw: Clean up includes 2016-01-29 15:07:25 +00:00
i386 x86: Clean up includes 2016-01-29 15:07:22 +00:00
ide macio: add dma_active to VMStateDescription 2016-01-30 23:37:36 +11:00
input hw: Clean up includes 2016-01-29 15:07:25 +00:00
intc hw/intc: Clean up includes 2016-01-29 15:07:24 +00:00
ipack hw: Clean up includes 2016-01-29 15:07:25 +00:00
ipmi hw: Clean up includes 2016-01-29 15:07:25 +00:00
isa hw: Clean up includes 2016-01-29 15:07:25 +00:00
lm32 lm32: Clean up includes 2016-01-29 15:07:22 +00:00
m68k m68k: Clean up includes 2016-01-29 15:07:24 +00:00
mem hw: Clean up includes 2016-01-29 15:07:25 +00:00
microblaze microblaze: Clean up includes 2016-01-28 11:13:13 +00:00
mips mips: Clean up includes 2016-01-23 14:30:04 +00:00
misc ivshmem: use a single eventfd callback, get rid of CharDriver 2016-02-02 13:28:58 +01:00
moxie moxie: Clean up includes 2016-01-29 15:07:25 +00:00
net hw/net: Clean up includes 2016-01-29 15:07:23 +00:00
nvram hw: Clean up includes 2016-01-29 15:07:25 +00:00
openrisc openrisc: Clean up includes 2016-01-29 15:07:24 +00:00
pci pci: Clean up includes 2016-01-29 15:07:24 +00:00
pci-bridge pci: Clean up includes 2016-01-29 15:07:24 +00:00
pci-host uninorth.c: add support for UniNorth kMacRISCPCIAddressSelect (0x48) register 2016-01-30 23:37:38 +11:00
pcmcia hw: Clean up includes 2016-01-29 15:07:25 +00:00
ppc target-ppc: Helper to determine page size information from hpte alone 2016-01-30 23:49:27 +11:00
s390x s390: Clean up includes 2016-01-29 15:07:22 +00:00
scsi virtio-scsi: Catch BDS-BB removal/insertion 2016-02-02 17:50:46 +01:00
sd hw: Clean up includes 2016-01-29 15:07:25 +00:00
sh4 sh4: Clean up includes 2016-01-29 15:07:24 +00:00
smbios hw: Clean up includes 2016-01-29 15:07:25 +00:00
sparc sparc: Clean up includes 2016-01-29 15:07:22 +00:00
sparc64 sparc: Clean up includes 2016-01-29 15:07:22 +00:00
ssi hw: Clean up includes 2016-01-29 15:07:25 +00:00
timer hw/timer: Clean up includes 2016-01-29 15:07:24 +00:00
tpm hw: Clean up includes 2016-01-29 15:07:25 +00:00
tricore tricore: Clean up includes 2016-01-29 15:07:25 +00:00
unicore32 unicore: Clean up includes 2016-01-29 15:07:22 +00:00
usb ehci: update irq on reset 2016-02-02 14:11:01 +01:00
vfio hw/vfio: Clean up includes 2016-01-29 15:07:24 +00:00
virtio virtio: Clean up includes 2016-01-29 15:07:23 +00:00
watchdog hw: Clean up includes 2016-01-29 15:07:25 +00:00
xen xen: Clean up includes 2016-01-29 15:07:23 +00:00
xenpv xen: Clean up includes 2016-01-29 15:07:23 +00:00
xtensa xtensa: Clean up includes 2016-01-29 15:07:24 +00:00
Makefile.objs Add a base IPMI interface 2015-12-22 18:39:19 +02:00