linux-kernel - Re: [Xen-devel] [PATCH 3/3] x86/xen: supply rsdp address in boot params for pvh guests

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Date:   Tue, 28 Nov 2017 10:17:24 +0000
From:   Roger Pau Monné <roger.pau@...rix.com>
To:     Juergen Gross <jgross@...e.com>
CC:     <linux-kernel@...r.kernel.org>, <xen-devel@...ts.xenproject.org>,
        <x86@...nel.org>, <corbet@....net>, <rjw@...ysocki.net>,
        <linux-acpi@...r.kernel.org>, <mingo@...hat.com>, <hpa@...or.com>,
        <boris.ostrovsky@...cle.com>, <tglx@...utronix.de>,
        <lenb@...nel.org>
Subject: Re: [Xen-devel] [PATCH 3/3] x86/xen: supply rsdp address in boot
 params for pvh guests

On Tue, Nov 28, 2017 at 10:44:00AM +0100, Juergen Gross wrote:
> When booted via the special PVH entry save the RSDP address set in the
> boot information block in struct boot_params. This will enable Xen to
> locate the RSDP at an arbitrary address.
> 
> Signed-off-by: Juergen Gross <jgross@...e.com>
> ---
>  arch/x86/xen/enlighten_pvh.c | 2 ++
>  1 file changed, 2 insertions(+)
> 
> diff --git a/arch/x86/xen/enlighten_pvh.c b/arch/x86/xen/enlighten_pvh.c
> index 436c4f003e17..0175194f4236 100644
> --- a/arch/x86/xen/enlighten_pvh.c
> +++ b/arch/x86/xen/enlighten_pvh.c
> @@ -71,6 +71,8 @@ static void __init init_pvh_bootparams(void)
>  	 */
>  	pvh_bootparams.hdr.version = 0x212;

Shouldn't this be 0x20e, like it's set in patch 1?

Roger.