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Re: [Xen-devel] [PATCH v2 2/2] xen/pvh: correctly setup the PV EFI interface for dom0
- To: Roger Pau Monné <roger.pau@xxxxxxxxxx>
- From: Boris Ostrovsky <boris.ostrovsky@xxxxxxxxxx>
- Date: Wed, 24 Apr 2019 11:45:43 -0400
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- Cc: Juergen Gross <jgross@xxxxxxxx>, Stefano Stabellini <sstabellini@xxxxxxxxxx>, xen-devel@xxxxxxxxxxxxxxxxxxxx, x86@xxxxxxxxxx, linux-kernel@xxxxxxxxxxxxxxx, platform-driver-x86@xxxxxxxxxxxxxxx, Ingo Molnar <mingo@xxxxxxxxxx>, Borislav Petkov <bp@xxxxxxxxx>, "H. Peter Anvin" <hpa@xxxxxxxxx>, Darren Hart <dvhart@xxxxxxxxxxxxx>, Thomas Gleixner <tglx@xxxxxxxxxxxxx>, Andy Shevchenko <andy@xxxxxxxxxxxxx>
- Delivery-date: Wed, 24 Apr 2019 15:46:33 +0000
- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
- Openpgp: preference=signencrypt
On 4/24/19 11:45 AM, Roger Pau Monné wrote:
> On Wed, Apr 24, 2019 at 11:36:41AM -0400, Boris Ostrovsky wrote:
>> 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@xxxxxxxxx>
>>> Signed-off-by: Roger Pau Monné <roger.pau@xxxxxxxxxx>
>> Hmm.. This seems to be breaking save/restore for me (for domU), and I
>> can't see any obvious reasons.
>>
>> Can you try it?
> Sure, thanks for the extra testing! I have to admit I haven't tested
> save/restore with this patch applied, it didn't come to mind it might
> affect that functionality.
>
> I assume it's save/restore of a PVH domU that's broken (HVM and PV are
> fine)?
>
PV is fine, I haven't tried HVM.
-boris
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