kvm tools: Check the state before pause/resume

Let the user know what happened

Signed-off-by: Lai Jiangshan <laijs@cn.fujitsu.com>
Signed-off-by: Pekka Enberg <penberg@kernel.org>

kvm tools: Improve 'lkvm {pause,resume}'s output

lkvm {pause,resume} do not give any feedback to user who uses these
commands in the console where the command run.

This patch makes the command outp

kvm tools: Improve 'lkvm {pause,resume}'s output

lkvm {pause,resume} do not give any feedback to user who uses these
commands in the console where the command run.

This patch makes the command output in the command console instead of
guest console.

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

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kvm tools: carefully send and handle pause/resume ipc

Remove struct pause_cmd/resume_cmd and use kvm_ipc__send().

Signed-off-by: Lai Jiangshan <laijs@cn.fujitsu.com>
Signed-off-by: Pekka Enberg <pe

kvm tools: carefully send and handle pause/resume ipc

Remove struct pause_cmd/resume_cmd and use kvm_ipc__send().

Signed-off-by: Lai Jiangshan <laijs@cn.fujitsu.com>
Signed-off-by: Pekka Enberg <penberg@kernel.org>

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kvm tools: cleanup kvm_cmd_pause()

Use stack variable.
Remove unneeded branch.
Close opened file.

Signed-off-by: Lai Jiangshan <laijs@cn.fujitsu.com>
Signed-off-by: Pekka Enberg <penberg@kernel.org>

kvm tools: change the binary name from kvm to lkvm for commands' usage

Commands' usage : Change the binary name from *kvm* to *lkvm*,
since commit ad3efb18 has done it.

Signed-off-by: Wanlong Gao <

kvm tools: change the binary name from kvm to lkvm for commands' usage

Commands' usage : Change the binary name from *kvm* to *lkvm*,
since commit ad3efb18 has done it.

Signed-off-by: Wanlong Gao <gaowanlong@cn.fujitsu.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 correct data type for pid

This patch fixes an error where pids used u64 instead of pid_t, causing them
to never be negative.

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

kvm tools: Use correct data type for pid

This patch fixes an error where pids used u64 instead of pid_t, causing them
to never be negative.

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

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kvm tools: Fix wrong kill() PID in commands

There was a mixup in the balloon usage string and some of the commands were
retrieving the instance name from the wrong place. This will cause the command

kvm tools: Fix wrong kill() PID in commands

There was a mixup in the balloon usage string and some of the commands were
retrieving the instance name from the wrong place. This will cause the commands
to issue kill() with negative PIDs (which sends the signal to every process in
the system). Without this patch, 'kvm command instance' will do crazy things
like restart whole Gnome session.

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: Improve 'kvm pause' parameters

kvm pause now uses the git option parser to parse parameters.

Added option to pause instance by PID and pause all instances.

Improved usage message.

Sign

kvm tools: Improve 'kvm pause' parameters

kvm pause now uses the git option parser to parse parameters.

Added option to pause instance by PID and pause all instances.

Improved usage message.

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

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kvm tools: Connect existing command helpers to 'kvm help'

This patch connects usage helpers to 'kvm help' callbacks, allowing
to see help about a command by doing 'kvm help [command]'.

Signed-off-b

kvm tools: Connect existing command helpers to 'kvm help'

This patch connects usage helpers to 'kvm help' callbacks, allowing
to see help about a command by doing 'kvm help [command]'.

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

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kvm tool: Fix builtin command usage printouts

This patch fixes builtin commands to use usage_with_options() instead of die().
The latter prefixes messages with "Fatal" which makes the usage text ugl

kvm tool: Fix builtin command usage printouts

This patch fixes builtin commands to use usage_with_options() instead of die().
The latter prefixes messages with "Fatal" which makes the usage text ugly.

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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kvm tools: convert callback to int and deal with the return value

callback function maybe fail, so we should deal with the return value.

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

kvm tools: convert callback to int and deal with the return value

callback function maybe fail, so we should deal with the return value.

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

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kvm tools: Split 'kvm pause' and add 'kvm resume'

This patch seperates 'kvm pause' into 'kvm pause' and 'kvm resume',
'kvm pause' no longer acts as a switch between running and paused state but
inst

kvm tools: Split 'kvm pause' and add 'kvm resume'

This patch seperates 'kvm pause' into 'kvm pause' and 'kvm resume',
'kvm pause' no longer acts as a switch between running and paused state but
instead just switches the instance into paused and reume is handled by
the new 'kvm resume'.

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

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kvm tools: Rename command source files

Rename kvm-[command] into builtin-[command] to prevent
clashes with non-command files such as kvm-cpu.h

Suggested-by: Pekka Enberg <penberg@kernel.org>
Signed

kvm tools: Rename command source files

Rename kvm-[command] into builtin-[command] to prevent
clashes with non-command files such as kvm-cpu.h

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

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kvm tools: Allow pausing and debugging all running instances

Add a 'kvm [debug,pause] all' command to allow pausing or debugging
all running guests on a host.

Signed-off-by: Sasha Levin <levinsasha

kvm tools: Allow pausing and debugging all running instances

Add a 'kvm [debug,pause] all' command to allow pausing or debugging
all running guests on a host.

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

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kvm tools: Provide instance name when running 'kvm pause'

Instead of sending a signal to the first instance found, send it
to a specific instance.

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

kvm tools: Provide instance name when running 'kvm pause'

Instead of sending a signal to the first instance found, send it
to a specific instance.

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

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kvm tools: Add 'kvm pause' command

This patch adds a 'kvm debug' command that's currently an alias for

kill -USR2 `pidof kvm`

Which pauses a guest (freezes all VCPU threads) or resumes a paused

kvm tools: Add 'kvm pause' command

This patch adds a 'kvm debug' command that's currently an alias for

kill -USR2 `pidof kvm`

Which pauses a guest (freezes all VCPU threads) or resumes a paused
guest.

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

show more ...