linux-kernel - Re: [PATCH v2 2/2] xen: add acpi_arch_get_root

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Message-ID: <b412ae20-76bf-854c-e69c-c74e876191e0@oracle.com>
Date:   Thu, 25 Jan 2018 10:46:05 -0500
From:   Boris Ostrovsky <boris.ostrovsky@...cle.com>
To:     Juergen Gross <jgross@...e.com>, linux-kernel@...r.kernel.org,
        linux-acpi@...r.kernel.org, xen-devel@...ts.xenproject.org
Cc:     lenb@...nel.org, rafael.j.wysocki@...el.com, mingo@...hat.com,
        stable@...r.kernel.org
Subject: Re: [PATCH v2 2/2] xen: add acpi_arch_get_root_pointer() for pvh
 guests



On 01/25/2018 09:36 AM, Juergen Gross wrote:
> Add acpi_arch_get_root_pointer() for Xen PVH guests to communicate
> the address of the RSDP table given to the kernel via Xen start info.
> 
> This makes the kernel boot again in PVH mode after on recent Xen the
> RSDP was moved to higher addresses. So up to that change it was pure
> luck that the legacy method to locate the RSDP was working when
> running as PVH mode.
> 
> Cc: <stable@...r.kernel.org> # 4.11
> Signed-off-by: Juergen Gross <jgross@...e.com>


Reviewed-by: Boris Ostrovsky <boris.ostrovsky@...cle.com>