From: Gerd Hoffmann <kraxel@redhat.com>
To: Dov Murik <dovmurik@linux.ibm.com>
Cc: linux-efi@vger.kernel.org, Borislav Petkov <bp@suse.de>,
Ashish Kalra <ashish.kalra@amd.com>,
Brijesh Singh <brijesh.singh@amd.com>,
Tom Lendacky <thomas.lendacky@amd.com>,
Ard Biesheuvel <ardb@kernel.org>,
James Morris <jmorris@namei.org>,
"Serge E. Hallyn" <serge@hallyn.com>,
Andi Kleen <ak@linux.intel.com>,
Greg KH <gregkh@linuxfoundation.org>,
Andrew Scull <ascull@google.com>,
Dave Hansen <dave.hansen@intel.com>,
"Dr. David Alan Gilbert" <dgilbert@redhat.com>,
Lenny Szubowicz <lszubowi@redhat.com>,
Peter Gonda <pgonda@google.com>,
Matthew Garrett <mjg59@srcf.ucam.org>,
James Bottomley <jejb@linux.ibm.com>,
Tobin Feldman-Fitzthum <tobin@linux.ibm.com>,
Jim Cadden <jcadden@ibm.com>,
Daniele Buono <dbuono@linux.vnet.ibm.com>,
linux-coco@lists.linux.dev,
linux-security-module@vger.kernel.org,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH v8 2/4] virt: Add efi_secret module to expose confidential computing secrets
Date: Tue, 1 Mar 2022 13:24:31 +0100 [thread overview]
Message-ID: <20220301122431.xcsuneftshiibvst@sirius.home.kraxel.org> (raw)
In-Reply-To: <20220228114254.1099945-3-dovmurik@linux.ibm.com>
On Mon, Feb 28, 2022 at 11:42:52AM +0000, Dov Murik wrote:
> The new efi_secret module exposes the confidential computing (coco)
> EFI secret area via securityfs interface.
>
> When the module is loaded (and securityfs is mounted, typically under
> /sys/kernel/security), a "secrets/coco" directory is created in
> securityfs. In it, a file is created for each secret entry. The name
> of each such file is the GUID of the secret entry, and its content is
> the secret data.
>
> This allows applications running in a confidential computing setting to
> read secrets provided by the guest owner via a secure secret injection
> mechanism (such as AMD SEV's LAUNCH_SECRET command).
>
> Removing (unlinking) files in the "secrets/coco" directory will zero out
> the secret in memory, and remove the filesystem entry. If the module is
> removed and loaded again, that secret will not appear in the filesystem.
>
> Signed-off-by: Dov Murik <dovmurik@linux.ibm.com>
Reviewed-by: Gerd Hoffmann <kraxel@redhat.com>
next prev parent reply other threads:[~2022-03-01 12:24 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-02-28 11:42 [PATCH v8 0/4] Allow guest access to EFI confidential computing secret area Dov Murik
2022-02-28 11:42 ` [PATCH v8 1/4] efi: Save location of EFI confidential computing area Dov Murik
2022-02-28 11:42 ` [PATCH v8 2/4] virt: Add efi_secret module to expose confidential computing secrets Dov Murik
2022-03-01 12:24 ` Gerd Hoffmann [this message]
2022-02-28 11:42 ` [PATCH v8 3/4] efi: Load efi_secret module if EFI secret area is populated Dov Murik
2022-02-28 12:49 ` Ard Biesheuvel
2022-02-28 13:06 ` Dov Murik
2022-02-28 13:15 ` Ard Biesheuvel
2022-03-31 9:04 ` Dov Murik
2022-04-12 13:08 ` Ard Biesheuvel
2022-04-12 13:18 ` Dov Murik
2022-02-28 11:42 ` [PATCH v8 4/4] docs: security: Add secrets/coco documentation Dov Murik
2022-03-24 16:33 ` [PATCH v8 0/4] Allow guest access to EFI confidential computing secret area Borislav Petkov
2022-03-29 12:55 ` Dov Murik
2022-03-29 18:30 ` Borislav Petkov
2022-03-29 20:28 ` Dov Murik
2022-03-30 6:11 ` Dov Murik
2022-03-31 9:19 ` Borislav Petkov
2022-03-31 21:05 ` Dov Murik
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=20220301122431.xcsuneftshiibvst@sirius.home.kraxel.org \
--to=kraxel@redhat.com \
--cc=ak@linux.intel.com \
--cc=ardb@kernel.org \
--cc=ascull@google.com \
--cc=ashish.kalra@amd.com \
--cc=bp@suse.de \
--cc=brijesh.singh@amd.com \
--cc=dave.hansen@intel.com \
--cc=dbuono@linux.vnet.ibm.com \
--cc=dgilbert@redhat.com \
--cc=dovmurik@linux.ibm.com \
--cc=gregkh@linuxfoundation.org \
--cc=jcadden@ibm.com \
--cc=jejb@linux.ibm.com \
--cc=jmorris@namei.org \
--cc=linux-coco@lists.linux.dev \
--cc=linux-efi@vger.kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-security-module@vger.kernel.org \
--cc=lszubowi@redhat.com \
--cc=mjg59@srcf.ucam.org \
--cc=pgonda@google.com \
--cc=serge@hallyn.com \
--cc=thomas.lendacky@amd.com \
--cc=tobin@linux.ibm.com \
/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 a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).