linux-kernel - Re: [RFC PATCH 1/4] KVM: selftests: Add support for creating non-default type VMs

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Date:   Wed, 4 Aug 2021 13:29:54 -0700
From:   Erdem Aktas <erdemaktas@...gle.com>
To:     Maxim Levitsky <mlevitsk@...hat.com>
Cc:     Xiaoyao Li <xiaoyao.li@...el.com>, linux-kselftest@...r.kernel.org,
        Sean Christopherson <seanjc@...gle.com>,
        Peter Gonda <pgonda@...gle.com>, Marc Orr <marcorr@...gle.com>,
        Sagi Shahar <sagis@...gle.com>,
        Paolo Bonzini <pbonzini@...hat.com>,
        Shuah Khan <shuah@...nel.org>,
        Andrew Jones <drjones@...hat.com>,
        Ben Gardon <bgardon@...gle.com>, Peter Xu <peterx@...hat.com>,
        David Matlack <dmatlack@...gle.com>,
        Emanuele Giuseppe Esposito <eesposit@...hat.com>,
        Christian Borntraeger <borntraeger@...ibm.com>,
        Ricardo Koller <ricarkol@...gle.com>,
        Eric Auger <eric.auger@...hat.com>,
        Yanan Wang <wangyanan55@...wei.com>,
        Aaron Lewis <aaronlewis@...gle.com>,
        Jim Mattson <jmattson@...gle.com>,
        Oliver Upton <oupton@...gle.com>,
        Vitaly Kuznetsov <vkuznets@...hat.com>,
        Peter Shier <pshier@...gle.com>,
        Axel Rasmussen <axelrasmussen@...gle.com>,
        Zhenzhong Duan <zhenzhong.duan@...el.com>,
        "Maciej S. Szmigiero" <maciej.szmigiero@...cle.com>,
        Like Xu <like.xu@...ux.intel.com>,
        open list <linux-kernel@...r.kernel.org>,
        "open list:KERNEL VIRTUAL MACHINE (KVM)" <kvm@...r.kernel.org>
Subject: Re: [RFC PATCH 1/4] KVM: selftests: Add support for creating
 non-default type VMs

Thank you all for all that great feedback! I will include them in my v2.

On Wed, Aug 4, 2021 at 7:46 AM Maxim Levitsky <mlevitsk@...hat.com> wrote:
>
> > > > Can we pass KVM_X86_LEGACY_VM (whatever name when it's upstreamed)
> > > > instead of 0?
> > >
I was originally thinking of doing this but Sean has suggested that we
should use 0 to make it  arch-agnostic for creating default VMs.
+Sean Christopherson : What do you think?

>
> KVM_X86_NORMAL_VM is a very good name IMHO as well.
> Thanks!

Sounds good to me.

> For example:
>
> struct vm_options {
>         enum vm_guest_mode mode;
>         uint64_t phy_pages;
>         int perm;
>         int type;
> };
>
> struct kvm_vm *vm_create(const struct vm_options *options)
> {
>         ...
> }
>

I liked this idea, I will see if I can include it in my v2.

Thank you so much again.
-Erdem