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Re: [Xen-devel] [PATCH 2/3] x86/EFI: be cautious about being handed control with CR4.PGE enabled

To: Jan Beulich <JBeulich@xxxxxxxx>, xen-devel <xen-devel@xxxxxxxxxxxxxxxxxxxx>
From: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
Date: Fri, 19 Aug 2016 13:26:24 +0100
Delivery-date: Fri, 19 Aug 2016 12:26:40 +0000
List-id: Xen developer discussion <xen-devel.lists.xen.org>

On 19/08/16 08:51, Jan Beulich wrote:

To effect proper TLB flushing in that case we should clear CR4.PGE
before loading the new page tables.

Signed-off-by: Jan Beulich <jbeulich@xxxxxxxx>

Reviewed-by: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>

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References:
- [Xen-devel] [PATCH 0/3] x86/EFI: boot adjustments
  - From: Jan Beulich
- [Xen-devel] [PATCH 2/3] x86/EFI: be cautious about being handed control with CR4.PGE enabled
  - From: Jan Beulich

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