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Date: Thu, 6 May 2021 20:24:01 +0200
From: Joerg Roedel <jroedel@suse.de>
Subject: Re: [PATCH 1/2] kexec: Allow architecture code to opt-out at runtime
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To: Sean Christopherson <seanjc@google.com>
Cc: Joerg Roedel <joro@8bytes.org>, Eric Biederman <ebiederm@xmission.com>, x86@kernel.org, kexec@lists.infradead.org, stable@vger.kernel.org, hpa@zytor.com, Andy Lutomirski <luto@kernel.org>, Dave Hansen <dave.hansen@linux.intel.com>, Peter Zijlstra <peterz@infradead.org>, Jiri Slaby <jslaby@suse.cz>, Dan Williams <dan.j.williams@intel.com>, Tom Lendacky <thomas.lendacky@amd.com>, Juergen Gross <jgross@suse.com>, Kees Cook <keescook@chromium.org>, David Rientjes <rientjes@google.com>, Cfir Cohen <cfir@google.com>, Erdem Aktas <erdemaktas@google.com>, Masami Hiramatsu <mhiramat@kernel.org>, Mike Stunes <mstunes@vmware.com>, Martin Radev <martin.b.radev@gmail.com>, Arvind Sankar <nivedita@alum.mit.edu>, linux-coco@lists.linux.dev, linux-kernel@vger.kernel.org, kvm@vger.kernel.org, virtualization@lists.linux-foundation.org

On Thu, May 06, 2021 at 03:43:23PM +0000, Sean Christopherson wrote:
> This misses kexec_file_load.

Right, thanks, I will fix that in the next version.

> Also, is a new hook really needed?  E.g. the SEV-ES check be shoved
> into machine_kexec_prepare().  The downside is that we'd do a fair
> amount of work before detecting failure, but that doesn't seem hugely
> problematic.

That could work, but I think its more user-friendly to just claim that
the syscalls are not supported at all.

Regards,

	Joerg

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