On 7/1/19 1:19 AM, Zhenzhong Duan wrote:
> Map 'xen_nopv' to 'nopv' and mark 'xen_nopv' obsolete in
> kernel-parameters.txt
I am not sure we want patch #3, why not do everything in a single patch?
>
> Signed-off-by: Zhenzhong Duan <zhenzhong.d...@oracle.com>
> Cc: Boris Ostrovsky <boris.ostrov...@oracle.com>
> Cc: Juergen Gross <jgr...@suse.com>
> Cc: Stefano Stabellini <sstabell...@kernel.org>
> Cc: Thomas Gleixner <t...@linutronix.de>
> Cc: Ingo Molnar <mi...@redhat.com>
> Cc: Borislav Petkov <b...@alien8.de>
> ---
> Documentation/admin-guide/kernel-parameters.txt | 6 ++++++
> arch/x86/xen/enlighten_hvm.c | 7 +++++++
> 2 files changed, 13 insertions(+)
>
> diff --git a/Documentation/admin-guide/kernel-parameters.txt
> b/Documentation/admin-guide/kernel-parameters.txt
> index d5c3dcc..34eb323 100644
> --- a/Documentation/admin-guide/kernel-parameters.txt
> +++ b/Documentation/admin-guide/kernel-parameters.txt
> @@ -5264,6 +5264,12 @@
> improve timer resolution at the expense of processing
> more timer interrupts.
>
> + xen_nopv [X86]
> + Disables the PV optimizations forcing the HVM guest to
> + run as generic HVM guest with no PV drivers.
> + This option is obsoleted by the "nopv" option, which
> + has equivalent effect for XEN platform.
> +
> nopv= [X86,XEN,KVM,HYPER_V,VMWARE]
> Disables the PV optimizations forcing the guest to run
> as generic guest with no PV drivers. Currently support
> diff --git a/arch/x86/xen/enlighten_hvm.c b/arch/x86/xen/enlighten_hvm.c
> index 340dff8..5cdd608 100644
> --- a/arch/x86/xen/enlighten_hvm.c
> +++ b/arch/x86/xen/enlighten_hvm.c
> @@ -211,6 +211,13 @@ static void __init xen_hvm_guest_init(void)
> #endif
> }
>
> +static __init int xen_parse_nopv(char *arg)
> +{
> + nopv = true;
pr_notice("\"xen_nopv\" is deprecated, please use \"nopv\" instead\n");
-boris
> + return 0;
> +}
> +early_param("xen_nopv", xen_parse_nopv);
> +
> bool __init xen_hvm_need_lapic(void)
> {
> if (xen_pv_domain())
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