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| author | Rusty Russell <rusty@rustcorp.com.au> | 2007-10-22 03:24:21 +0200 |
|---|---|---|
| committer | Rusty Russell <rusty@rustcorp.com.au> | 2007-10-23 07:49:56 +0200 |
| commit | 19f1537b7b8a9a82665db3ad8210a9d954d13acd (patch) | |
| tree | 793c1f8763350012caa521a55c5778b1c633b7e5 /arch/x86/lguest/Kconfig | |
| parent | Remove old lguest I/O infrrasructure. (diff) | |
| download | linux-19f1537b7b8a9a82665db3ad8210a9d954d13acd.tar.xz linux-19f1537b7b8a9a82665db3ad8210a9d954d13acd.zip | |
Lguest support for Virtio
This makes lguest able to use the virtio devices.
We change the device descriptor page from a simple array to a variable
length "type, config_len, status, config data..." format, and
implement virtio_config_ops to read from that config data.
We use the virtio ring implementation for an efficient Guest <-> Host
virtqueue mechanism, and the new LHCALL_NOTIFY hypercall to kick the
host when it changes.
We also use LHCALL_NOTIFY on kernel addresses for very very early
console output. We could have another hypercall, but this hack works
quite well.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Diffstat (limited to 'arch/x86/lguest/Kconfig')
| -rw-r--r-- | arch/x86/lguest/Kconfig | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/arch/x86/lguest/Kconfig b/arch/x86/lguest/Kconfig index 44dccfd845f8..c4dffbeea5e1 100644 --- a/arch/x86/lguest/Kconfig +++ b/arch/x86/lguest/Kconfig @@ -2,8 +2,13 @@ config LGUEST_GUEST bool "Lguest guest support" select PARAVIRT depends on !X86_PAE + select VIRTIO select VIRTIO_RING + select VIRTIO_CONSOLE help Lguest is a tiny in-kernel hypervisor. Selecting this will allow your kernel to boot under lguest. This option will increase your kernel size by about 6k. If in doubt, say N. + + If you say Y here, make sure you say Y (or M) to the virtio block + and net drivers which lguest needs. |