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Re: [PATCH v2 0/3] hvm: add hvm_funcs hooks for msr intercept handling
- To: Xenia Ragiadakou <xenia.ragiadakou@xxxxxxx>
- From: Jan Beulich <jbeulich@xxxxxxxx>
- Date: Mon, 24 Apr 2023 17:11:44 +0200
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- Cc: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>, Roger Pau Monné <roger.pau@xxxxxxxxxx>, Wei Liu <wl@xxxxxxx>, Jun Nakajima <jun.nakajima@xxxxxxxxx>, Kevin Tian <kevin.tian@xxxxxxxxx>, xen-devel@xxxxxxxxxxxxxxxxxxxx
- Delivery-date: Mon, 24 Apr 2023 15:12:01 +0000
- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
On 24.04.2023 10:20, Xenia Ragiadakou wrote:
> This patch series aims to make the msr intercept handling, performed in
> vpmu code, virtualization technology agnostic.
> It creates a common interface for setting/clearing the msr intercepts and
> then add hooks to the corresponding hvm_funcs table to be able to call the
> svm/vmx specific handlers through a generic hvm wrapper function.
>
> Version 2 addresses the comments made on version 1 to ease further review.
>
> Still there is a pending question made by Jan, whether there could be other,
> than the vpmu one, use cases that would require msr intercept handling to be
> performed outside of virtualization techonology-specific code, and whether
> this abstraction is actually usefull to have.
Just for reference: The code changes look okay to me now. They could get my
ack, provided we really want to go this route (which I continue to be
unconvinced of).
Jan
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