linux-kernel - Re: [PATCH Part2 RFC v4 15/40] crypto: ccp: Handle the legacy TMR allocation when SNP is enabled

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Message-ID: <770a9480-a18b-473e-ba50-c9978ce64317@amd.com>
Date:   Fri, 16 Jul 2021 10:47:32 -0500
From:   Brijesh Singh <brijesh.singh@....com>
To:     Sean Christopherson <seanjc@...gle.com>
Cc:     brijesh.singh@....com, x86@...nel.org,
        linux-kernel@...r.kernel.org, kvm@...r.kernel.org,
        linux-efi@...r.kernel.org, platform-driver-x86@...r.kernel.org,
        linux-coco@...ts.linux.dev, linux-mm@...ck.org,
        linux-crypto@...r.kernel.org, Thomas Gleixner <tglx@...utronix.de>,
        Ingo Molnar <mingo@...hat.com>, Joerg Roedel <jroedel@...e.de>,
        Tom Lendacky <thomas.lendacky@....com>,
        "H. Peter Anvin" <hpa@...or.com>, Ard Biesheuvel <ardb@...nel.org>,
        Paolo Bonzini <pbonzini@...hat.com>,
        Vitaly Kuznetsov <vkuznets@...hat.com>,
        Wanpeng Li <wanpengli@...cent.com>,
        Jim Mattson <jmattson@...gle.com>,
        Andy Lutomirski <luto@...nel.org>,
        Dave Hansen <dave.hansen@...ux.intel.com>,
        Sergio Lopez <slp@...hat.com>, Peter Gonda <pgonda@...gle.com>,
        Peter Zijlstra <peterz@...radead.org>,
        Srinivas Pandruvada <srinivas.pandruvada@...ux.intel.com>,
        David Rientjes <rientjes@...gle.com>,
        Dov Murik <dovmurik@...ux.ibm.com>,
        Tobin Feldman-Fitzthum <tobin@....com>,
        Borislav Petkov <bp@...en8.de>,
        Michael Roth <michael.roth@....com>,
        Vlastimil Babka <vbabka@...e.cz>, tony.luck@...el.com,
        npmccallum@...hat.com, brijesh.ksingh@...il.com
Subject: Re: [PATCH Part2 RFC v4 15/40] crypto: ccp: Handle the legacy TMR
 allocation when SNP is enabled


On 7/16/21 10:35 AM, Sean Christopherson wrote:
> It wasn't comment on the patch organization, rather that the code added in patch 14
> appears to have landed in the wrong location within the code.  The above diff shows
> that the TMR allocation is being moved around the SNP initialization code that was
> added in patch 14 (the immediately prior patch).  Presumably the required order
> doesn't magically change just because the TMR is now being allocated as a 2mb blob,
> so either the code movement is unnecessary churn or the original location was wrong.
> In either case, landing the SNP initialization code above the TMR allocation in
> patch 14 would eliminate the above code movement.

Got it, I'll rearrange things in the previous patch to avoid this hunk.

thanks