Message-ID: <1c64afc8769c222e27ee22a3758b6c32348949d0.camel@infradead.org>
Subject: Re: [External] [PATCH v2 0/5] x86-64: Remove global variables from
 boot
From:   David Woodhouse <dwmw2@infradead.org>
To:     Usama Arif <usama.arif@bytedance.com>,
        Brian Gerst <brgerst@gmail.com>,
        Yuan Yao <yuan.yao@linux.intel.com>
Cc:     linux-kernel@vger.kernel.org, x86@kernel.org,
        Thomas Gleixner <tglx@linutronix.de>,
        Borislav Petkov <bp@alien8.de>,
        "H . Peter Anvin" <hpa@zytor.com>,
        Peter Zijlstra <peterz@infradead.org>,
        Andy Lutomirski <luto@kernel.org>,
        Ingo Molnar <mingo@kernel.org>
Date:   Sat, 25 Feb 2023 13:52:49 +0000
In-Reply-To: <671dc8ad-2721-a3a3-7aa2-0e2558d5c953@bytedance.com>
References: <20230224154235.277350-1-brgerst@gmail.com>
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         <ca5788873c373249983ab6ac9ee173b12293641e.camel@infradead.org>
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         <E940A2E7-6FAC-4E87-96DE-596BA3F505AF@infradead.org>
         <671dc8ad-2721-a3a3-7aa2-0e2558d5c953@bytedance.com>
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On Sat, 2023-02-25 at 13:33 +0000, Usama Arif wrote:
>=20
> Yeah looks good! I am testing with the macro diff for tr_lock from=20
> https://lore.kernel.org/all/05e27a7a-1faa-944e-2764-6ab4d620fb8f@bytedanc=
e.com/.
> If it all works, happy for me to send out v12 with it?

I moved the macro definition up a little to put it between the .code16
and the .align, pushed it out as a commit on top of the above branch.

We'll collapse it into the 'Support parallel startup' patch, yes?

> > I can probably work out how to test the AMD SEV path; is there a
> > way I can test the startup_64 MADT one?
>=20
> I guess the easiest way is to create a TDX VM on Sapphire Rapids which I=
=20
> believe mostly Intel people have access to right now? Maybe we can post=
=20
> v12 and someone from Intel could just quickly verify if it boots with
> it? I have added Yuan from the other thread in here who pointed it out=
=20
> initially.

Yeah, I should also be able to rustle up both SPR and SEV-SNP if I dig
around at work a little.

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