Re: [PATCH 10/25] KVM: TDX: Initialize KVM supported capabilities when module setup

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On Tue, Sep 10, 2024 at 07:15:12PM +0200, Paolo Bonzini wrote:
> On 8/29/24 06:51, Tony Lindgren wrote:
> > > nit: Since there are other similarly named functions that come later how
> > > about rename this to init_kvm_tdx_caps, so that it's clear that the
> > > functions that are executed ones are prefixed with "init_" and those that
> > > will be executed on every TDV boot up can be named prefixed with "setup_"
> > We can call setup_kvm_tdx_caps() from from tdx_get_kvm_supported_cpuid(),
> > and drop the struct kvm_tdx_caps. So then the setup_kvm_tdx_caps() should
> > be OK.
> 
> I don't understand this suggestion since tdx_get_capabilities() also needs
> kvm_tdx_caps.  I think the code is okay as it is with just the rename that
> Nik suggested (there are already some setup_*() functions in KVM but for
> example setup_vmcs_config() is called from hardware_setup()).

Oh sorry for the confusion, looks like I pasted the function names wrong
way around above and left out where setup_kvm_tdx_caps() can be called
from.

I meant only tdx_get_capabilities() needs to call setup_kvm_tdx_caps().
And setup_kvm_tdx_caps() calls tdx_get_kvm_supported_cpuid().

The data in kvm_tdx_caps is only needed for tdx_get_capabilities(). It can
be generated from the data already in td_conf.

At least that's what it looks like to me, but maybe I'm missing something.

Regards,

Tony




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