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Re: [PATCH v4 8/47] x86/tsc: Add dedicated hypervisor hooks for getting known TSC/CPU frequencies
- To: seanjc@xxxxxxxxxx
- From: David Woodhouse <dwmw2@xxxxxxxxxxxxx>
- Date: Mon, 01 Jun 2026 22:49:02 +0100
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- Delivery-date: Mon, 01 Jun 2026 21:49:20 +0000
- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
On Fri, 29 May 2026 07:43:55 -0700, Sean Christopherson wrote:
> Add dedicated hypervisor hooks for getting known TSC/CPU frequencies
> instead of overriding seemingly generic platform hooks, and explicitly
> priotize hypervisor-provided frequencies over native methods, but do NOT
> clobber the frequency obtained from trusted firmware. While shuffling the
> hooks around is arguably "six of one, half dozen of the other", scoping
> them to x86_hyper_init makes their purpose more obvious, and allows for
> explicitly defining the priority of sources (as is done here).
>
> Cc: David Woodhouse <dwmw2@xxxxxxxxxxxxx>
> Signed-off-by: Sean Christopherson <seanjc@xxxxxxxxxx>
Reviewed-by: David Woodhouse <dwmw@xxxxxxxxxxxx>
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