kernel-ark/drivers
Christian Borntraeger e976a2b997 s390: KVM guest: virtio device support, and kvm hypercalls
This patch implements kvm guest kernel support for paravirtualized devices
and contains two parts:
o a basic virtio stub using virtio_ring and external interrupts and hypercalls
o full hypercall implementation in kvm_para.h

Currently we dont have PCI on s390. Making virtio_pci usable for s390 seems
more complicated that providing an own stub. This virtio stub is similar to
the lguest one, the memory for the descriptors and the device detection is made
via additional mapped memory on top of the guest storage. We use an external
interrupt with extint code 0x2603 for host->guest notification.

The hypercall definition uses the diag instruction for issuing a hypercall. The
parameters are written in R2-R7, the hypercall number is written in R1. This is
similar to the system call ABI (svc) which can use R1 for the number and R2-R6
for the parameters.

Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Acked-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Carsten Otte <cotte@de.ibm.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-04-27 12:00:51 +03:00
..
acorn/char
acpi
amba
ata
atm
auxdisplay
base
block
bluetooth
cdrom
char Merge branch 'agp-patches' of git://git.kernel.org/pub/scm/linux/kernel/git/airlied/agp-2.6 2008-04-26 09:29:36 -07:00
clocksource
connector
cpufreq
cpuidle
crypto
dca
dio
dma
edac
eisa
firewire
firmware
gpio
hid
hwmon
i2c
ide ide: constify struct ide_dma_ops 2008-04-26 22:25:24 +02:00
ieee1394
infiniband IB/ipath: Correct capitalization "IntX" -> "INTx" 2008-04-21 18:19:15 -07:00
input
isdn
leds
lguest
macintosh
mca
md
media
memstick
message
mfd
misc
mmc
mtd
net
nubus
of
oprofile
parisc
parport
pci
pcmcia
pnp
power
ps3
rapidio
rtc
s390 s390: KVM guest: virtio device support, and kvm hypercalls 2008-04-27 12:00:51 +03:00
sbus
scsi ide: add struct ide_dma_ops (take 3) 2008-04-26 22:25:24 +02:00
serial Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc 2008-04-25 12:52:16 -07:00
sh
sn
spi
ssb
tc
telephony
thermal
uio
usb
video
virtio
w1
watchdog
xen
zorro
Kconfig xen: add balloon driver 2008-04-24 23:57:33 +02:00
Makefile