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Re: [PATCH] x86/xstate: Rework xsetbv() to use asm goto()

To: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
From: Jan Beulich <jbeulich@xxxxxxxx>
Date: Wed, 21 May 2025 16:46:16 +0200
Cc: Roger Pau Monné <roger.pau@xxxxxxxxxx>, Xen-devel <xen-devel@xxxxxxxxxxxxxxxxxxxx>
Delivery-date: Wed, 21 May 2025 14:46:21 +0000
List-id: Xen developer discussion <xen-devel.lists.xenproject.org>

On 21.05.2025 16:36, Andrew Cooper wrote:
> Switch to using a mnemonic, and asm_inline as there's EXTABLE metadata.
> 
> Update the types, and adjust parameter names.  The name xfeatures is specific
> to xcr0, so rename to val to be more generic, even if there isn't another
> writeable xcr yet.
> 
> No functional change.
> 
> Resolves: https://gitlab.com/xen-project/xen/-/work_items/212
> Signed-off-by: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>

Reviewed-by: Jan Beulich <jbeulich@xxxxxxxx>

References:
- [PATCH] x86/xstate: Rework xsetbv() to use asm goto()
  - From: Andrew Cooper

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