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
WARNING: multiple messages have this Message-ID (diff)
From: Joerg Roedel <joro@8bytes.org>
To: Eric Biederman <ebiederm@xmission.com>, x86@kernel.org
Cc: kvm@vger.kernel.org, Peter Zijlstra <peterz@infradead.org>,
Dave Hansen <dave.hansen@linux.intel.com>,
virtualization@lists.linux-foundation.org,
Arvind Sankar <nivedita@alum.mit.edu>,
hpa@zytor.com, Jiri Slaby <jslaby@suse.cz>,
David Rientjes <rientjes@google.com>,
Martin Radev <martin.b.radev@gmail.com>,
Tom Lendacky <thomas.lendacky@amd.com>,
Joerg Roedel <jroedel@suse.de>, Kees Cook <keescook@chromium.org>,
Cfir Cohen <cfir@google.com>,
linux-coco@lists.linux.dev, Andy Lutomirski <luto@kernel.org>,
Dan Williams <dan.j.williams@intel.com>,
Juergen Gross <jgross@suse.com>, Mike Stunes <mstunes@vmware.com>,
Sean Christopherson <seanjc@google.com>,
linux-kernel@vger.kernel.org,
Masami Hiramatsu <mhiramat@kernel.org>,
Erdem Aktas <erdemaktas@google.com>
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
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next prev parent reply other threads:[~2021-06-14 12:33 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-06-03 13:22 [PATCH v2 0/2] x86: Disable kexec for SEV-ES guests Joerg Roedel
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 ` 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
2021-06-03 13:22 ` Joerg Roedel
2021-06-14 12:33 ` Joerg Roedel [this message]
2021-06-14 12:33 ` [PATCH v2 0/2] x86: Disable kexec for SEV-ES guests Joerg Roedel
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