linux-kernel - Re: linux-next: manual merge of the cgroup tree with the kvm tree

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite for Android: free password hash cracker in your pocket

[<prev] [next>] [<thread-prev] [day] [month] [year] [list]

Message-ID: <CAHVum0e25jKjUPiQR5+QR4x9_4CzBWNzv3=95=PyZ75Y=JMYHw@mail.gmail.com>
Date:   Thu, 22 Apr 2021 10:30:12 -0700
From:   Vipin Sharma <vipinsh@...gle.com>
To:     Paolo Bonzini <pbonzini@...hat.com>
Cc:     Stephen Rothwell <sfr@...b.auug.org.au>, Tejun Heo <tj@...nel.org>,
        KVM <kvm@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Linux Next Mailing List <linux-next@...r.kernel.org>,
        Sean Christopherson <seanjc@...gle.com>,
        David Rientjes <rientjes@...gle.com>
Subject: Re: linux-next: manual merge of the cgroup tree with the kvm tree

On Thu, Apr 22, 2021 at 10:19 AM Paolo Bonzini <pbonzini@...hat.com> wrote:
>
> On 22/04/21 19:09, Vipin Sharma wrote:
> > On Thu, Apr 22, 2021 at 12:47 AM Paolo Bonzini <pbonzini@...hat.com> wrote:
> >> You can check the current state of the merge in the queue branch of the
> >> KVM tree.  This is what I plan to merge if Tejun agrees.  That would be
> >> helpful indeed!
> >
> > Merge looks fine from my patch perspective. However, one thing is missing:
> >
> > In sev_guest_init() after sev_asid_free() call we should also write
> > set sev->es_false = false.
> >
> > Without this the main intent of Sean's patch will be missing in the merge.
>
> So this:
>
> diff --git a/arch/x86/kvm/svm/sev.c b/arch/x86/kvm/svm/sev.c
> index 3539201278bd..2632852be856 100644
> --- a/arch/x86/kvm/svm/sev.c
> +++ b/arch/x86/kvm/svm/sev.c
> @@ -224,7 +224,7 @@ static int sev_guest_init(struct kvm *kvm, struct
> kvm_sev_cmd *argp)
>         sev->es_active = es_active;
>         asid = sev_asid_new(sev);
>         if (asid < 0)
> -               return ret;
> +               goto e_no_asid;
>         sev->asid = asid;
>
>         ret = sev_platform_init(&argp->error);
> @@ -240,6 +240,8 @@ static int sev_guest_init(struct kvm *kvm, struct
> kvm_sev_cmd *argp)
>   e_free:
>         sev_asid_free(sev);
>         sev->asid = 0;
> +e_no_asid:
> +       sev->es_active = false;
>         return ret;
>   }
>
>
> Sounds good, I'll squash it and push to kvm.git.
>
> Paolo

Thanks. This looks good.