Re: [PATCH] x86: Add a Kconfig shortcut for a kvm-bootable kernel

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On Tue, Apr 16, 2013 at 06:18:52PM +0200, Borislav Petkov wrote:
> On Sun, Apr 14, 2013 at 01:03:20PM +0200, Borislav Petkov wrote:
> > On Sun, Apr 14, 2013 at 12:31:12PM +0300, Pekka Enberg wrote:
> > > I obviously support having something like this in mainline. I wonder
> > > though if we could just call this "default standalone KVM guest
> > > config" instead of emphasizing testing angle.
> > 
> > /me nods agreeingly...
> > 
> > And it should be unter HYPERVISOR_GUEST where the rest of this stuff
> > resides. Good point.
> 
> Sanity check question:
> 
> Why not add the select stuff, i.e. this:
> 
> 	select NET
> 	select NETDEVICES
> 	select PCI
> 	select BLOCK
> 	select BLK_DEV
> 	select NETWORK_FILESYSTEMS
> 	select INET
> 	select EXPERIMENTAL
> 	select TTY
> 	select SERIAL_8250
> 	select SERIAL_8250_CONSOLE
> 	select IP_PNP
> 	select IP_PNP_DHCP
> 	select BINFMT_ELF
> 	select PCI_MSI
> 	select HAVE_ARCH_KGDB
> 	select DEBUG_KERNEL
> 	select KGDB
> 	select KGDB_SERIAL_CONSOLE
> 	select VIRTUALIZATION
> 	select VIRTIO
> 	select VIRTIO_RING
> 	select VIRTIO_PCI
> 	select VIRTIO_BLK
> 	select VIRTIO_CONSOLE
> 	select VIRTIO_NET
> 	select 9P_FS
> 	select NET_9P
> 	select NET_9P_VIRTIO
> 
> to the option below which we already have. It is in the same sense a KVM
> guest support deal.
> 
> Hmm.
> 
> KVM people, any objections?

None, but please don't mix it with 'KVM_GUEST' flag below. 

Actually, what about adding kvm variants of the two files at
arch/x86/configs/ ?

> config KVM_GUEST
>         bool "KVM Guest support (including kvmclock)"
>         depends on PARAVIRT
>         select PARAVIRT_CLOCK
>         default y
>         ---help---
>           This option enables various optimizations for running under the KVM
>           hypervisor. It includes a paravirtualized clock, so that instead
>           of relying on a PIT (or probably other) emulation by the
>           underlying device model, the host provides the guest with
>           timing infrastructure such as time of day, and system time

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