linux-kernel - Re: [PATCH v14 1/3] virt/coco/sev-guest: Add throttling awareness

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Date:   Mon, 13 Feb 2023 14:28:13 -0800
From:   Dionna Amalie Glaze <dionnaglaze@...gle.com>
To:     Tom Lendacky <thomas.lendacky@....com>
Cc:     linux-kernel@...r.kernel.org, x86@...nel.org,
        Paolo Bonzini <pbonzini@...hat.com>,
        Joerg Roedel <jroedel@...e.de>,
        Peter Gonda <pgonda@...gle.com>,
        Thomas Gleixner <tglx@...utronix.de>,
        Dave Hansen <dave.hansen@...ux.intel.com>,
        Ingo Molnar <mingo@...hat.com>,
        Borislav Petkov <Borislav.Petkov@....com>,
        "H. Peter Anvin" <hpa@...or.com>,
        Venu Busireddy <venu.busireddy@...cle.com>,
        Michael Roth <michael.roth@....com>,
        "Kirill A. Shutemov" <kirill@...temov.name>,
        Michael Sterritt <sterritt@...gle.com>
Subject: Re: [PATCH v14 1/3] virt/coco/sev-guest: Add throttling awareness

>
> This should really be a new, separate patch.
>

I had it as a separate patch and squashed since I felt it necessary to
be considered still a "Fixes" patch. Should both claim to fix the same
patch?

>
> It looks like you will ensure throttling by continually calling the
> hypervisor for 60 seconds, shouldn't there be a delay here?
>

I can change cond_resched() to sleep_timeout_killable(some_constant)

> > -             rc = snp_issue_guest_request(exit_code, &snp_dev->input, &err);
> > +             cond_resched();
> > +             goto retry;
> >
> > +     }
>
> Nit, add a blank line here.
>

Will do.

> Thanks,
> Tom
>


-- 
-Dionna Glaze, PhD (she/her)