kvm tools: Split x86 arch-specific bits into x86/

Create a new arch-specific subdirectory to contain architecture-specific code
and includes.

The Makefile now adds various arch-specific objects bas

kvm tools: Split x86 arch-specific bits into x86/

Create a new arch-specific subdirectory to contain architecture-specific code
and includes.

The Makefile now adds various arch-specific objects based on detected
architecture. That aside, this patch should only contain code moves. These
include:

- x86-specific kvm_cpu setup, kernel loading, memory setup etc. now in
x86/kvm{-cpu}.c
- BIOS now lives in x86/bios/
- ioport setup
- KVM extensions are asserted in arch-specific kvm.c now, so each architecture
can manage its own dependencies.
- Various architecture-specific #defines are moved into $(ARCH)/include/kvm{-cpu}.h
such as struct kvm_cpu, KVM_NR_CPUS, KVM_32BIT_GAP_SIZE.

Signed-off-by: Matt Evans <matt@ozlabs.org>
Signed-off-by: Pekka Enberg <penberg@kernel.org>

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kvm tools: Remove double 'init=' kernel param

Signed-off-by: Sasha Levin <levinsasha928@gmail.com>
Signed-off-by: Pekka Enberg <penberg@kernel.org>

kvm tools: Add '--no-dhcp' to disable kernel DHCP

This new option disables the kernel DHCP which runs when starting
a custom rootfs.

This is useful when we want to start a rootfs but are using a ne

kvm tools: Add '--no-dhcp' to disable kernel DHCP

This new option disables the kernel DHCP which runs when starting
a custom rootfs.

This is useful when we want to start a rootfs but are using a network
other than the usermode IP proxy (a network which doesn't provide DHCP).

Signed-off-by: Sasha Levin <levinsasha928@gmail.com>
Signed-off-by: Pekka Enberg <penberg@kernel.org>

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kvm tools: Add vhost-net support

This patch adds support to using the vhost-net device when using a tap backed
virtio-net device.

Activating vhost-net is done by appending a 'vhost=1' flag to the n

kvm tools: Add vhost-net support

This patch adds support to using the vhost-net device when using a tap backed
virtio-net device.

Activating vhost-net is done by appending a 'vhost=1' flag to the net device
configuration. For example:

'kvm run -n mode=tap,vhost=1'

This improves performance as follows:

Short version
------------------

TCP Throughput: +29%
UDP Throughput: +10%
TCP Latency: -15%
UDP Latency: -12%

Long version
------------------

MIGRATED TCP STREAM TEST from 0.0.0.0 (0.0.0.0) port 0 AF_INET to
192.168.33.4 (192.168.33.4) port 0 AF_INET
Recv Send Send
Socket Socket Message Elapsed
Size Size Size Time Throughput
bytes bytes bytes secs. 10^6bits/sec

87380 16384 16384 10.00 4895.04

MIGRATED UDP STREAM TEST from 0.0.0.0 (0.0.0.0) port 0 AF_INET to
192.168.33.4 (192.168.33.4) port 0 AF_INET
Socket Message Elapsed Messages
Size Size Time Okay Errors Throughput
bytes bytes secs # # 10^6bits/sec

229376 65507 10.00 125287 0 6565.60
229376 10.00 106910 5602.57

MIGRATED TCP REQUEST/RESPONSE TEST from 0.0.0.0 (0.0.0.0) port 0 AF_INET
to 192.168.33.4 (192.168.33.4) port 0 AF_INET : first burst 0
Local /Remote
Socket Size Request Resp. Elapsed Trans.
Send Recv Size Size Time Rate
bytes Bytes bytes bytes secs. per sec

16384 87380 1 1 10.00 14811.55

MIGRATED UDP REQUEST/RESPONSE TEST from 0.0.0.0 (0.0.0.0) port 0 AF_INET
to 192.168.33.4 (192.168.33.4) port 0 AF_INET : first burst 0
Local /Remote
Socket Size Request Resp. Elapsed Trans.
Send Recv Size Size Time Rate
bytes Bytes bytes bytes secs. per sec

229376 229376 1 1 10.00 16000.44
229376 229376

After:

MIGRATED TCP STREAM TEST from 0.0.0.0 (0.0.0.0) port 0 AF_INET to
192.168.33.4 (192.168.33.4) port 0 AF_INET
Recv Send Send
Socket Socket Message Elapsed
Size Size Size Time Throughput
bytes bytes bytes secs. 10^6bits/sec

87380 16384 16384 10.00 6340.74

MIGRATED UDP STREAM TEST from 0.0.0.0 (0.0.0.0) port 0 AF_INET to
192.168.33.4 (192.168.33.4) port 0 AF_INET
Socket Message Elapsed Messages
Size Size Time Okay Errors Throughput
bytes bytes secs # # 10^6bits/sec

229376 65507 10.00 131478 0 6890.09
229376 10.00 118136 6190.90

MIGRATED TCP REQUEST/RESPONSE TEST from 0.0.0.0 (0.0.0.0) port 0 AF_INET
to 192.168.33.4 (192.168.33.4) port 0 AF_INET : first burst 0
Local /Remote
Socket Size Request Resp. Elapsed Trans.
Send Recv Size Size Time Rate
bytes Bytes bytes bytes secs. per sec

16384 87380 1 1 10.00 17126.10

MIGRATED UDP REQUEST/RESPONSE TEST from 0.0.0.0 (0.0.0.0) port 0 AF_INET
to 192.168.33.4 (192.168.33.4) port 0 AF_INET : first burst 0
Local /Remote
Socket Size Request Resp. Elapsed Trans.
Send Recv Size Size Time Rate
bytes Bytes bytes bytes secs. per sec

229376 229376 1 1 10.00 17944.51
Cc: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Sasha Levin <levinsasha928@gmail.com>
Signed-off-by: Pekka Enberg <penberg@kernel.org>

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kvm tools: Drop "notsc" no longer needed kernel option

"notsc" option has been used to avoid APIC calibration
problem at early days when we didn't support APIC at all.

Now with KVM APIC emulation u

kvm tools: Drop "notsc" no longer needed kernel option

"notsc" option has been used to avoid APIC calibration
problem at early days when we didn't support APIC at all.

Now with KVM APIC emulation used there is no longer need
for this option. Drop it.

Reported-by: Richard Weinberger <richard@nod.at>
Tested-by: Richard Weinberger <richard@nod.at>
Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
Signed-off-by: Pekka Enberg <penberg@kernel.org>

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kvm tools: Allow piping debug output to file descriptor

This patch makes debug output go to a 'debug_fd' instead of stdout.

Doing so allows us to send the output to a different console when
require

kvm tools: Allow piping debug output to file descriptor

This patch makes debug output go to a 'debug_fd' instead of stdout.

Doing so allows us to send the output to a different console when
required.

This patch also changes the behaviour of 'kvm debug' to show the debug
output in the console that executed the debug command instead of in the
console of the guest.

Signed-off-by: Sasha Levin <levinsasha928@gmail.com>
Signed-off-by: Pekka Enberg <penberg@kernel.org>

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kvm tools: Switch to using UNIX sockets instead of signals

This patch changes the IPC method to use UNIX sockets instead of
signals.

This allows for more flexibility in moving data between processe

kvm tools: Switch to using UNIX sockets instead of signals

This patch changes the IPC method to use UNIX sockets instead of
signals.

This allows for more flexibility in moving data between processes, for example
it would allow avoid printing output in the terminal of the guest.

Signed-off-by: Sasha Levin <levinsasha928@gmail.com>
Signed-off-by: Pekka Enberg <penberg@kernel.org>

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kvm tools: Use kvm__get_dir() helper function

This patch adds a kvm__get_dir() helper function that replaces open-coded uses
of HOME_DIR and KVM_PID_FILE_PATH.

Cc: Asias He <asias.hejun@gmail.com>

kvm tools: Use kvm__get_dir() helper function

This patch adds a kvm__get_dir() helper function that replaces open-coded uses
of HOME_DIR and KVM_PID_FILE_PATH.

Cc: Asias He <asias.hejun@gmail.com>
Cc: Cyrill Gorcunov <gorcunov@gmail.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Sasha Levin <levinsasha928@gmail.com>
Signed-off-by: Pekka Enberg <penberg@kernel.org>

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kvm tools: Support multiple net devices

This patch adds support for multiple network devices. The command line syntax
changes to the following:

--network/-n [mode=tap/user/none][,guest_ip=ip][,hos

kvm tools: Support multiple net devices

This patch adds support for multiple network devices. The command line syntax
changes to the following:

--network/-n [mode=tap/user/none][,guest_ip=ip][,host_ip=
ip][,guest_mac=mac][,script=file]

Each of the parameters is optional, and the config defaults to a TAP based
networking with a sequential MAC.

Acked-by: Asias He <asias.hejun@gmail.com>
Signed-off-by: Sasha Levin <levinsasha928@gmail.com>
Signed-off-by: Pekka Enberg <penberg@kernel.org>

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kvm tools: Use host's resolv.conf within the guest

Since kernel IP autoconfiguration doesn't set up /etc/resolv.conf, we'll
use the one located within the host, since this was anyway what we simulat

kvm tools: Use host's resolv.conf within the guest

Since kernel IP autoconfiguration doesn't set up /etc/resolv.conf, we'll
use the one located within the host, since this was anyway what we simulated
within the DHCP offer packets.

Signed-off-by: Sasha Levin <levinsasha928@gmail.com>

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kvm tools: Allow remapping guest TTY into host PTS

This patch adds the '-tty' option to 'kvm run' which allows the user to
remap a guest TTY into a PTS on the host.

Usage:
'kvm run --tty [i

kvm tools: Allow remapping guest TTY into host PTS

This patch adds the '-tty' option to 'kvm run' which allows the user to
remap a guest TTY into a PTS on the host.

Usage:
'kvm run --tty [id]'

The tty will be mapped to a pts and will be printed on the screen:
' Info: Assigned terminal 1 to pty /dev/pts/X'

At this point, it is possible to communicate with the guest using that pty.

This is useful for debugging guest kernel using KGDB:

1. Run the guest:
'kvm run -k [vmlinuz] -p "kgdboc=ttyS1 kgdbwait" --tty 1'

And see which PTY got assigned to ttyS1.

2. Run GDB on the host:
'gdb [vmlinuz]'

3. Connect to the guest (from within GDB):
'target remote /dev/pty/X'

4. Start debugging! (enter 'continue' to continue boot).

Cc: David Evensky <evensky@dancer.ca.sandia.gov>
Signed-off-by: Sasha Levin <levinsasha928@gmail.com>

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kvm tools: Don't use i8042 AUX port

We are enabling i8042 even without VNC or SDL so that we could use it's
reset method to reboot the guest.

AUX port might cause delays during boot. Disable it if

kvm tools: Don't use i8042 AUX port

We are enabling i8042 even without VNC or SDL so that we could use it's
reset method to reboot the guest.

AUX port might cause delays during boot. Disable it if the user didn't ask
for VNC or SDL.

Signed-off-by: Sasha Levin <levinsasha928@gmail.com>
Signed-off-by: Pekka Enberg <penberg@kernel.org>

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kvm tools: Use kernel dhcp for network autoconfiguration

This patch removes the manual/usermode dhcp client configuration and instead
uses the DHCP client built within the kernel.

Since this client

kvm tools: Use kernel dhcp for network autoconfiguration

This patch removes the manual/usermode dhcp client configuration and instead
uses the DHCP client built within the kernel.

Since this client is tightly integrated with NFS (if NFS config is set), we
will add a specific NFS root addr in our DHCP offer to point it to a non
existent address so that we won't hang trying to poke it for our root.

Acked-by: Asias He <asias.hejun@gmail.com>
Signed-off-by: Sasha Levin <levinsasha928@gmail.com>
Signed-off-by: Pekka Enberg <penberg@kernel.org>

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kvm tools: Fix 32bit build errors

Signed-off-by: Sasha Levin <levinsasha928@gmail.com>
Signed-off-by: Pekka Enberg <penberg@kernel.org>

kvm tools: remove addr_type - unused but set variable

Signed-off-by: Hagen Paul Pfeifer <hagen@jauu.net>
Cc: Sasha Levin <levinsasha928@gmail.com>
Signed-off-by: Pekka Enberg <penberg@kernel.org>

kvm tools: Modify 'kvm run' to use virt fs

'kvm run' will now create a 'default' profile and boot into it.

Currently we boot into rw rootfs of the host, which is risky. Instead,
we can boot in a 's

kvm tools: Modify 'kvm run' to use virt fs

'kvm run' will now create a 'default' profile and boot into it.

Currently we boot into rw rootfs of the host, which is risky. Instead,
we can boot in a 'safe' enviroment with networking.

Signed-off-by: Sasha Levin <levinsasha928@gmail.com>
Signed-off-by: Pekka Enberg <penberg@kernel.org>

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kvm tools: Teach 'run' to handle guestfs

This patch allows to run previously created guestfs by simply specifying it
with the '-d' parameter.

This allows running guestfs which were created before u

kvm tools: Teach 'run' to handle guestfs

This patch allows to run previously created guestfs by simply specifying it
with the '-d' parameter.

This allows running guestfs which were created before using:

kvm setup -n [name]

Signed-off-by: Sasha Levin <levinsasha928@gmail.com>
Signed-off-by: Pekka Enberg <penberg@kernel.org>

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kvm tools: Attach default 'root=' only if required

This patch fixes a case where the 'root=' parameter was passed twice
when using virtio-9p root mode.

Signed-off-by: Sasha Levin <levinsasha928@gma

kvm tools: Attach default 'root=' only if required

This patch fixes a case where the 'root=' parameter was passed twice
when using virtio-9p root mode.

Signed-off-by: Sasha Levin <levinsasha928@gmail.com>
Signed-off-by: Pekka Enberg <penberg@kernel.org>

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kvm tools: Add ivshmem device

The patch adds an ivshmem device which can be used to share memory between
guests on the same host.

This implementation is lacking inter-guest communication which shou

kvm tools: Add ivshmem device

The patch adds an ivshmem device which can be used to share memory between
guests on the same host.

This implementation is lacking inter-guest communication which should be
implemented later once information regarding the client-server protocol is
gathered, though infrastructure used to add and remove clients already exists
in the patch (but isn't used anywhere).

Patch is based on David Evansky's shmem device.

Original-patch-by: David Evensky <evensky@sandia.gov>
Signed-off-by: Sasha Levin <levinsasha928@gmail.com>
Signed-off-by: Pekka Enberg <penberg@kernel.org>

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kvm tools, 9p: Implement 9p2000.L extensions

This patch implement dotl protocol for the server. 9p2000.L enables better
interop with Linux client and offers larger set of features.

Acked-by: Sasha

kvm tools, 9p: Implement 9p2000.L extensions

This patch implement dotl protocol for the server. 9p2000.L enables better
interop with Linux client and offers larger set of features.

Acked-by: Sasha Levin <levinsasha928@gmail.com>
Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
Signed-off-by: Pekka Enberg <penberg@kernel.org>

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kvm tools: Separate virtio-pci layer out of virtio-9p

Signed-off-by: Sasha Levin <levinsasha928@gmail.com>
Signed-off-by: Pekka Enberg <penberg@kernel.org>

kvm tools: Guest kernel compatability

The problem of users running kernel which wasn't built for kvm tools is
somewhat common. Usualy the result is a panic during boot and a user whos'
stuck and doe

kvm tools: Guest kernel compatability

The problem of users running kernel which wasn't built for kvm tools is
somewhat common. Usualy the result is a panic during boot and a user whos'
stuck and doesn't know what to do next.

Compatability checks try to solve this issue by giving the user a meaningfull
error message which can explain whats going on and how he can fix it.

The idea is to register the device during device init and unregister the
device when the device has been 'used'. In case the kernel didn't access
the device before the guest is shut down, the host will notify the user that
something is wrong.

Signed-off-by: Sasha Levin <levinsasha928@gmail.com>
Signed-off-by: Pekka Enberg <penberg@kernel.org>

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kvm tools: change option type of RNG from increment to boolean

Becasue virtio random generator is a single device, change its option
type to boolean.

Signed-off-by: Liming Wang <walimisdev@gmail.co

kvm tools: change option type of RNG from increment to boolean

Becasue virtio random generator is a single device, change its option
type to boolean.

Signed-off-by: Liming Wang <walimisdev@gmail.com>
Signed-off-by: Pekka Enberg <penberg@kernel.org>

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kvm tools: Speed up PS/2 mouse detection

This patch speeds up PS/2 mouse detection by switching to the
fastest probing method compatible with kvm tools i8042 emulation.

The result is detection taki

kvm tools: Speed up PS/2 mouse detection

This patch speeds up PS/2 mouse detection by switching to the
fastest probing method compatible with kvm tools i8042 emulation.

The result is detection taking < 0.5 sec instead of >5 sec.

Tested-by: Asias He <asias.hejun@gmail.com>
Signed-off-by: Sasha Levin <levinsasha928@gmail.com>
Signed-off-by: Pekka Enberg <penberg@kernel.org>

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kvm tools: Organize includes in builtin-run.c

This patch organizes the includes in builtin-run.c so that KVM tool local
headers are included first, then Linux kernel headers, and finally system
head

kvm tools: Organize includes in builtin-run.c

This patch organizes the includes in builtin-run.c so that KVM tool local
headers are included first, then Linux kernel headers, and finally system
headers.

This helps in keeping headers dependencies in check so that they can be
included by themselves.

Cc: Asias He <asias.hejun@gmail.com>
Cc: Cyrill Gorcunov <gorcunov@gmail.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Prasad Joshi <prasadjoshi124@gmail.com>
Cc: Sasha Levin <levinsasha928@gmail.com>
Signed-off-by: Pekka Enberg <penberg@kernel.org>

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