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Re: [Xen-devel] [PATCHv2 3/3] x86/hvm: add HVM_PARAM_X87_FIP_WIDTH

To: David Vrabel <david.vrabel@xxxxxxxxxx>, <xen-devel@xxxxxxxxxxxxxxxxxxxx>
From: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
Date: Tue, 23 Feb 2016 11:20:37 +0000
Cc: Wei Liu <wei.liu2@xxxxxxxxxx>, Ian Jackson <Ian.Jackson@xxxxxxxxxxxxx>, Ian Campbell <Ian.Campbell@xxxxxxxxxx>, Jan Beulich <jbeulich@xxxxxxxx>
Delivery-date: Tue, 23 Feb 2016 11:20:46 +0000
List-id: Xen developer discussion <xen-devel.lists.xen.org>

On 23/02/16 11:05, David Vrabel wrote:
> The HVM parameter HVM_PARAM_X87_FIP_WIDTH to allow tools and the guest
> to adjust the width of the FIP/FDP registers to be saved/restored by
> the hypervisor.  This is in case the hypervisor hueristics do not do
> the right thing.
>
> Add this parameter to the set saved during domain save/migrate.
>
> Signed-off-by: David Vrabel <david.vrabel@xxxxxxxxxx>

CC'ing toolstack.

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

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Follow-Ups:
- Re: [Xen-devel] [PATCHv2 3/3] x86/hvm: add HVM_PARAM_X87_FIP_WIDTH
  - From: Wei Liu

References:
- [Xen-devel] [PATCHv2 0/3] x86: workaround inability to fully restore FPU state
  - From: David Vrabel
- [Xen-devel] [PATCHv2 3/3] x86/hvm: add HVM_PARAM_X87_FIP_WIDTH
  - From: David Vrabel

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