linux-kernel - Re: [PATCH] KVM: VMX: simplify vmx_prepare_switch_to

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Message-ID: <11522be0-4d38-a8e5-e4cd-274c8e309b2f@redhat.com>
Date:   Fri, 7 Jun 2019 20:13:21 +0200
From:   Paolo Bonzini <pbonzini@...hat.com>
To:     Sean Christopherson <sean.j.christopherson@...el.com>
Cc:     linux-kernel@...r.kernel.org, kvm@...r.kernel.org
Subject: Re: [PATCH] KVM: VMX: simplify vmx_prepare_switch_to_{guest,host}

On 07/06/19 19:47, Sean Christopherson wrote:
>> This is the hiccup with naming it sregs_loaded.  The split bools is also
>> kinda wonky since the 32->64 case is a one-off scenario.  I think a
>> cleaner solution would be to remove guest_msrs_dirty and refresh the MSRs
>> directly from setup_msrs().  Then loaded_cpu_state -> loaded_guest_state
>> can be a straight conversion from loaded_vmcs -> bool.  I'll send patches.
> Actually, would it be easier on your end if I do a v2 of the series that
> would introduce vmx_sync_vmcs_host_state(), and splice these patch into it?

For now I'll just rename it to guest_state_loaded, let's do further
cleanups on top.  My plan is to post my version of everything after
testing so that you can do a "git range-diff" between my patches and
yours.  (For exposure I'll probably push that to kvm/queue, but I don't
intend to merge them to kvm/next without your review).

Paolo