From mboxrd@z Thu Jan  1 00:00:00 1970
From: Paolo Bonzini <pbonzini@redhat.com>
Subject: Re: [RFC PATCH 1/7] [hyper-v] Add hyper-v parameters block.
Date: Tue, 11 Oct 2011 09:35:27 +0200
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Cc: kvm@vger.kernel.org, Avi Kivity <avi@redhat.com>
To: Vadim Rozenfeld <vrozenfe@redhat.com>
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On 10/09/2011 08:52 PM, Vadim Rozenfeld wrote:
> ---
>   qemu-options.hx |   23 +++++++++++++++++++++++
>   vl.c            |    2 ++
>   2 files changed, 25 insertions(+), 0 deletions(-)
>
> diff --git a/qemu-options.hx b/qemu-options.hx
> index 3a13533..9f60059 100644
> --- a/qemu-options.hx
> +++ b/qemu-options.hx
> @@ -2483,6 +2483,29 @@ DEF("kvm-shadow-memory", HAS_ARG, QEMU_OPTION_kvm_shadow_memory,
>       "                allocate MEGABYTES for kvm mmu shadowing\n",
>       QEMU_ARCH_I386)
>
> +DEF("hyperv", HAS_ARG, QEMU_OPTION_hyperv,
> +    "-hyperv [vapic=on|off][,spinlock=retries][,wd=on|off]\n"
> +    "                enable Hyper-V Enlightenment\n",
> +        QEMU_ARCH_ALL)
> +STEXI
> +@item -hyperv
> +@findex -hyperv
> +@item vapic=@var{vapic}
> +@var{vapic} is "on" or "off" and allows for using virtual APIC.
> +Default is "off".
> +@findex vapic
> +@item spinlock=@var{spinlock}
> +@var{spinlock} is a recommended number of attempts to retry
> +a spinlock failure befor notifying the hypervisor.
> +Default is 0xFFFFFFFF (never to retry).
> +@findex spinlock
> +:@item wd=@var{wd}
> +@var{wd} is "on" or "off" and recommends using relaxed timing.
> +Default is "off"
> +@findex wd
> +Simulate Hyper-V Enlightenment. Disable by default.
> +ETEXI
> +
>   HXCOMM This is the last statement. Insert new options before this line!
>   STEXI
>   @end table
> diff --git a/vl.c b/vl.c
> index b0358e9..a6d1fc0 100644
> --- a/vl.c
> +++ b/vl.c
> @@ -3185,6 +3185,8 @@ int main(int argc, char **argv, char **envp)
>                       fclose(fp);
>                       break;
>                   }
> +            case QEMU_OPTION_hyperv:
> +                break;
>               default:
>                   os_parse_cmd_args(popt->index, optarg);
>               }

I think these could be sub-options of -machine.

Paolo