linux-kernel - Re: [PATCH v2 2/2] xen/pvh: correctly setup the PV EFI interface for dom0

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Message-ID: <2359c97c-1125-cfd2-44c2-7e9ce7972558@oracle.com>
Date:   Wed, 24 Apr 2019 11:36:41 -0400
From:   Boris Ostrovsky <boris.ostrovsky@...cle.com>
To:     Roger Pau Monne <roger.pau@...rix.com>,
        linux-kernel@...r.kernel.org
Cc:     Juergen Gross <jgross@...e.com>,
        Stefano Stabellini <sstabellini@...nel.org>,
        Darren Hart <dvhart@...radead.org>,
        Andy Shevchenko <andy@...radead.org>,
        Thomas Gleixner <tglx@...utronix.de>,
        Ingo Molnar <mingo@...hat.com>, Borislav Petkov <bp@...en8.de>,
        "H. Peter Anvin" <hpa@...or.com>, x86@...nel.org,
        xen-devel@...ts.xenproject.org, platform-driver-x86@...r.kernel.org
Subject: Re: [PATCH v2 2/2] xen/pvh: correctly setup the PV EFI interface for
 dom0

On 4/23/19 9:04 AM, Roger Pau Monne wrote:
> This involves initializing the boot params EFI related fields and the
> efi global variable.
>
> Without this fix a PVH dom0 doesn't detect when booted from EFI, and
> thus doesn't support accessing any of the EFI related data.
>
> Reported-by: PGNet Dev <pgnet.dev@...il.com>
> Signed-off-by: Roger Pau Monné <roger.pau@...rix.com>

Hmm.. This seems to be breaking save/restore for me (for domU), and I
can't see any obvious reasons.

Can you try it?

-boris