linux-kernel - Re: [PATCH v6 1/5] x86/kvm: Add AMD SEV specific Hypercall3

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Message-ID: <CABayD+dM8OafXkw6_Af17uvthnNG+k3majitc3uGwsm+Lr8DAQ@mail.gmail.com>
Date:   Wed, 10 Nov 2021 11:38:39 -0800
From:   Steve Rutherford <srutherford@...gle.com>
To:     Borislav Petkov <bp@...en8.de>
Cc:     "Kalra, Ashish" <Ashish.Kalra@....com>,
        Sean Christopherson <seanjc@...gle.com>,
        "pbonzini@...hat.com" <pbonzini@...hat.com>,
        "tglx@...utronix.de" <tglx@...utronix.de>,
        "mingo@...hat.com" <mingo@...hat.com>,
        "hpa@...or.com" <hpa@...or.com>,
        "joro@...tes.org" <joro@...tes.org>,
        "Lendacky, Thomas" <thomas.lendacky@....com>,
        "x86@...nel.org" <x86@...nel.org>,
        "kvm@...r.kernel.org" <kvm@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "Singh, Brijesh" <brijesh.singh@....com>,
        "dovmurik@...ux.ibm.com" <dovmurik@...ux.ibm.com>,
        "tobin@...ux.ibm.com" <tobin@...ux.ibm.com>,
        "jejb@...ux.ibm.com" <jejb@...ux.ibm.com>,
        "dgilbert@...hat.com" <dgilbert@...hat.com>
Subject: Re: [PATCH v6 1/5] x86/kvm: Add AMD SEV specific Hypercall3

On Wed, Sep 29, 2021 at 4:44 AM Borislav Petkov <bp@...en8.de> wrote:
>
> On Tue, Sep 28, 2021 at 07:26:32PM +0000, Kalra, Ashish wrote:
> > Yes that’s what I mentioned to Boris.
>
> Right, and as far as I'm concerned, the x86 bits look ok to me and I'm
> fine with this going through the kvm tree.
>
> There will be a conflict with this:
>
> https://lkml.kernel.org/r/20210928191009.32551-1-bp@alien8.de
>
> resulting in:
>
> arch/x86/kernel/kvm.c: In function ‘setup_efi_kvm_sev_migration’:
> arch/x86/kernel/kvm.c:563:7: error: implicit declaration of function ‘sev_active’; did you mean ‘cpu_active’? [-Werror=implicit-function-declaration]
>   563 |  if (!sev_active() ||
>       |       ^~~~~~~~~~
>       |       cpu_active
> cc1: some warnings being treated as errors
> make[2]: *** [scripts/Makefile.build:277: arch/x86/kernel/kvm.o] Error 1
> make[2]: *** Waiting for unfinished jobs....
> make[1]: *** [scripts/Makefile.build:540: arch/x86/kernel] Error 2
> make: *** [Makefile:1868: arch/x86] Error 2
> make: *** Waiting for unfinished jobs....
>
> but Paolo and I will figure out what to do - I'll likely have a separate
> branch out which he can merge and that sev_active() will need to be
> converted to
>
>         if (!cc_platform_has(CC_ATTR_GUEST_MEM_ENCRYPT))
>
> which is trivial.
>
> Thx.
>
> --
> Regards/Gruss,
>     Boris.
>
> https://people.kernel.org/tglx/notes-about-netiquette

Hey All,

Bumping this thread again, since I believe these patches are good to go.

Let me know if there is anything I can do to help here,
Thanks,
Steve