On 12/2/20 1:19 PM, Enrico Weigelt, metux IT consult wrote:
> Make it possible to opt-out from Hyper-V support, for minimized kernels
> that never will by run under Hyper-V. (eg. high-density virtualization
> or embedded systems)
>
> Average distro kernel will leave it on, therefore default to y.
>
> Signed-off-by: Enrico Weigelt <i...@metux.net>
> ---
> arch/x86/Kconfig | 11 +++++++++++
> arch/x86/kernel/cpu/Makefile | 4 ++--
> arch/x86/kernel/cpu/hypervisor.c | 2 ++
> drivers/hv/Kconfig | 2 +-
> 4 files changed, 16 insertions(+), 3 deletions(-)
>
> diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
> index eff12460cb3c..57d20591d6ee 100644
> --- a/arch/x86/Kconfig
> +++ b/arch/x86/Kconfig
> @@ -812,6 +812,17 @@ config VMWARE_GUEST
> density virtualization or embedded systems running (para)virtualized
> workloads.
>
> +config HYPERV_GUEST
> + bool "Hyper-V Guest support"
> + default y
> + help
> + This option enables several optimizations for running under the
> + Hyper-V hypervisor.
> +
> + Disabling it saves a few kb, for stripped down kernels eg. in high
kB, e.g.
> + density virtualization or embedded systems running (para)virtualized
> + workloads.
> +
> config KVM_GUEST
> bool "KVM Guest support (including kvmclock)"
> depends on PARAVIRT
--
~Randy
