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From: Joerg Roedel <joro@8bytes.org>
To: Eric Biederman <ebiederm@xmission.com>, x86@kernel.org
Cc: Joerg Roedel <jroedel@suse.de>,
	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>,
	Sean Christopherson <seanjc@google.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
Subject: Re: [PATCH v2 0/2] x86: Disable kexec for SEV-ES guests
Date: Mon, 14 Jun 2021 14:33:04 +0200	[thread overview]
Message-ID: <YMdMgCAIYN4zOX4N@8bytes.org> (raw)
In-Reply-To: <20210603132233.10004-1-joro@8bytes.org>

Gentle ping.

On Thu, Jun 03, 2021 at 03:22:31PM +0200, Joerg Roedel wrote:
> From: Joerg Roedel <jroedel@suse.de>
> 
> Changes v1->v2:
> 
> 	- Rebased to v5.13-rc4
> 	- Add the check also to the kexec_file_load system call
> 
> Original cover letter:
> 
> Hi,
> 
> two small patches to disable kexec on x86 when running as an SEV-ES
> guest. Trying to kexec a new kernel would fail anyway because there is
> no mechanism yet to hand over the APs from the old to the new kernel.
> Supporting this needs changes in the Hypervisor and the guest kernel
> as well.
> 
> This code is currently being work on, but disable kexec in SEV-ES
> guests until it is ready.
> 
> Please review.
> 
> Regards,
> 
> 	Joerg
> 
> Joerg Roedel (2):
>   kexec: Allow architecture code to opt-out at runtime
>   x86/kexec/64: Forbid kexec when running as an SEV-ES guest
> 
>  arch/x86/kernel/machine_kexec_64.c |  8 ++++++++
>  include/linux/kexec.h              |  1 +
>  kernel/kexec.c                     | 14 ++++++++++++++
>  kernel/kexec_file.c                |  9 +++++++++
>  4 files changed, 32 insertions(+)
> 
> -- 
> 2.31.1

      parent reply	other threads:[~2021-06-14 12:33 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-06-03 13:22 Joerg Roedel
2021-06-03 13:22 ` [PATCH v2 1/2] kexec: Allow architecture code to opt-out at runtime Joerg Roedel
2021-06-03 13:22 ` [PATCH v2 2/2] x86/kexec/64: Forbid kexec when running as an SEV-ES guest Joerg Roedel
2021-06-14 12:33 ` Joerg Roedel [this message]

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