From: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
To: Joerg Roedel <joro@8bytes.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>,
daniel.kiper@oracle.com, x86@kernel.org,
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>, Andy Lutomirski <luto@kernel.org>,
Dan Williams <dan.j.williams@intel.com>,
Juergen Gross <jgross@suse.com>, Mike Stunes <mstunes@vmware.com>,
linux-kernel@vger.kernel.org,
Sean Christopherson <sean.j.christopherson@intel.com>,
Masami Hiramatsu <mhiramat@kernel.org>,
Erdem Aktas <erdemaktas@google.com>
Subject: Re: [PATCH 0/7] x86/seves: Support 32-bit boot path and other updates
Date: Wed, 10 Feb 2021 10:19:38 -0500 [thread overview]
Message-ID: <20210210151938.GH358613@fedora> (raw)
In-Reply-To: <20210210151224.GC7302@8bytes.org>
On Wed, Feb 10, 2021 at 04:12:25PM +0100, Joerg Roedel wrote:
> Hi Konrad,
>
> On Wed, Feb 10, 2021 at 09:58:35AM -0500, Konrad Rzeszutek Wilk wrote:
> > What GRUB versions are we talking about (CC-ing Daniel Kiper, who owns
> > GRUB).
>
> I think this was about 32-bit GRUB builds used by distributions. I
> personally tested it with a kernel which has EFI support disabled, in
> this case the OVMF firmware will also boot into the startup_32 boot
> path.
I think I am missing something obvious here - but why would you want
EFI support disabled?
Or is the idea that "legacy" OSes can nicely run under AMD SEV?
But since you are having a kernel patch that is not "legacy OS" anymore.
>
> > By 'some firmware' we talking SeaBIOS?
>
> No, SeaBIOS is not supported for SEV-ES, only OVMF has handling for #VC
> so far.
>
> Regards,
>
> Joerg
_______________________________________________
Virtualization mailing list
Virtualization@lists.linux-foundation.org
https://lists.linuxfoundation.org/mailman/listinfo/virtualization
WARNING: multiple messages have this Message-ID (diff)
From: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
To: Joerg Roedel <joro@8bytes.org>
Cc: daniel.kiper@oracle.com, x86@kernel.org,
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 <sean.j.christopherson@intel.com>,
Martin Radev <martin.b.radev@gmail.com>,
Arvind Sankar <nivedita@alum.mit.edu>,
linux-kernel@vger.kernel.org, kvm@vger.kernel.org,
virtualization@lists.linux-foundation.org
Subject: Re: [PATCH 0/7] x86/seves: Support 32-bit boot path and other updates
Date: Wed, 10 Feb 2021 10:19:38 -0500 [thread overview]
Message-ID: <20210210151938.GH358613@fedora> (raw)
In-Reply-To: <20210210151224.GC7302@8bytes.org>
On Wed, Feb 10, 2021 at 04:12:25PM +0100, Joerg Roedel wrote:
> Hi Konrad,
>
> On Wed, Feb 10, 2021 at 09:58:35AM -0500, Konrad Rzeszutek Wilk wrote:
> > What GRUB versions are we talking about (CC-ing Daniel Kiper, who owns
> > GRUB).
>
> I think this was about 32-bit GRUB builds used by distributions. I
> personally tested it with a kernel which has EFI support disabled, in
> this case the OVMF firmware will also boot into the startup_32 boot
> path.
I think I am missing something obvious here - but why would you want
EFI support disabled?
Or is the idea that "legacy" OSes can nicely run under AMD SEV?
But since you are having a kernel patch that is not "legacy OS" anymore.
>
> > By 'some firmware' we talking SeaBIOS?
>
> No, SeaBIOS is not supported for SEV-ES, only OVMF has handling for #VC
> so far.
>
> Regards,
>
> Joerg
next prev parent reply other threads:[~2021-02-10 15:20 UTC|newest]
Thread overview: 40+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-02-10 10:21 [PATCH 0/7] x86/seves: Support 32-bit boot path and other updates Joerg Roedel
2021-02-10 10:21 ` Joerg Roedel
2021-02-10 10:21 ` [PATCH 1/7] x86/boot/compressed/64: Cleanup exception handling before booting kernel Joerg Roedel
2021-02-10 10:21 ` Joerg Roedel
2021-02-10 10:21 ` [PATCH 2/7] x86/boot/compressed/64: Reload CS in startup_32 Joerg Roedel
2021-02-10 10:21 ` Joerg Roedel
2021-02-10 10:21 ` [PATCH 3/7] x86/boot/compressed/64: Setup IDT in startup_32 boot path Joerg Roedel
2021-02-10 10:21 ` Joerg Roedel
2021-02-24 10:49 ` Borislav Petkov
2021-02-24 10:49 ` Borislav Petkov
2021-02-10 10:21 ` [PATCH 4/7] x86/boot/compressed/64: Add 32-bit boot #VC handler Joerg Roedel
2021-02-10 10:21 ` Joerg Roedel
2021-02-25 12:13 ` Borislav Petkov
2021-02-25 12:13 ` Borislav Petkov
2021-02-10 10:21 ` [PATCH 5/7] x86/boot/compressed/64: Add CPUID sanity check to 32-bit boot-path Joerg Roedel
2021-02-10 10:21 ` Joerg Roedel
2021-02-10 10:21 ` [PATCH 6/7] x86/boot/compressed/64: Check SEV encryption in " Joerg Roedel
2021-02-10 10:21 ` Joerg Roedel
2021-02-10 16:25 ` Dave Hansen
2021-02-10 16:25 ` Dave Hansen
2021-02-10 16:46 ` Joerg Roedel
2021-02-10 16:46 ` Joerg Roedel
2021-02-10 16:47 ` Dave Hansen
2021-02-10 16:47 ` Dave Hansen
2021-02-10 20:44 ` Tom Lendacky
2021-02-10 20:44 ` Tom Lendacky
2021-03-02 19:43 ` Borislav Petkov
2021-03-02 19:43 ` Borislav Petkov
2021-03-09 10:02 ` Joerg Roedel
2021-03-09 10:02 ` Joerg Roedel
2021-02-10 10:21 ` [PATCH 7/7] x86/sev-es: Replace open-coded hlt-loops with sev_es_terminate() Joerg Roedel
2021-02-10 10:21 ` Joerg Roedel
2021-02-10 14:58 ` [PATCH 0/7] x86/seves: Support 32-bit boot path and other updates Konrad Rzeszutek Wilk
2021-02-10 14:58 ` Konrad Rzeszutek Wilk
2021-02-10 15:12 ` Joerg Roedel
2021-02-10 15:12 ` Joerg Roedel
2021-02-10 15:19 ` Konrad Rzeszutek Wilk [this message]
2021-02-10 15:19 ` Konrad Rzeszutek Wilk
2021-02-10 15:27 ` Joerg Roedel
2021-02-10 15:27 ` Joerg Roedel
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20210210151938.GH358613@fedora \
--to=konrad.wilk@oracle.com \
--cc=cfir@google.com \
--cc=dan.j.williams@intel.com \
--cc=daniel.kiper@oracle.com \
--cc=dave.hansen@linux.intel.com \
--cc=erdemaktas@google.com \
--cc=hpa@zytor.com \
--cc=jgross@suse.com \
--cc=joro@8bytes.org \
--cc=jroedel@suse.de \
--cc=jslaby@suse.cz \
--cc=keescook@chromium.org \
--cc=kvm@vger.kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=luto@kernel.org \
--cc=martin.b.radev@gmail.com \
--cc=mhiramat@kernel.org \
--cc=mstunes@vmware.com \
--cc=nivedita@alum.mit.edu \
--cc=peterz@infradead.org \
--cc=rientjes@google.com \
--cc=sean.j.christopherson@intel.com \
--cc=thomas.lendacky@amd.com \
--cc=virtualization@lists.linux-foundation.org \
--cc=x86@kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.