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Date: Thu, 3 Mar 2022 12:51:20 +0100
From: Borislav Petkov <bp@...en8.de>
To: Brijesh Singh <brijesh.singh@....com>
Cc: x86@...nel.org, linux-kernel@...r.kernel.org, kvm@...r.kernel.org,
linux-efi@...r.kernel.org, platform-driver-x86@...r.kernel.org,
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Thomas Gleixner <tglx@...utronix.de>,
Ingo Molnar <mingo@...hat.com>, Joerg Roedel <jroedel@...e.de>,
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"H. Peter Anvin" <hpa@...or.com>, Ard Biesheuvel <ardb@...nel.org>,
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Sean Christopherson <seanjc@...gle.com>,
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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>,
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brijesh.ksingh@...il.com, tony.luck@...el.com, marcorr@...gle.com,
sathyanarayanan.kuppuswamy@...ux.intel.com
Subject: Re: [PATCH v11 39/45] x86/sev: Use firmware-validated CPUID for
SEV-SNP guests
On Thu, Feb 24, 2022 at 10:56:19AM -0600, Brijesh Singh wrote:
> Also add an "sev_debug" kernel command-line parameter that will be used
> (initially) to dump the CPUID table for debugging/analysis.
No, not "sev_debug" - "sev=debug".
I'm pretty sure there will be need for other SEV-specific cmdline
options so this thing should be a set, i.e.,
"sev=(option1,option2?,option3?,...)"
etc.
See mcheck_enable() and the comment above it for an example.
--
Regards/Gruss,
Boris.
https://people.kernel.org/tglx/notes-about-netiquette
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