From: "Paolo Bonzini" <pbonzini@redhat.com>
To: jejb@linux.ibm.com, "Xu, Min M" <min.m.xu@intel.com>,
"devel@edk2.groups.io" <devel@edk2.groups.io>,
"Yao, Jiewen" <jiewen.yao@intel.com>,
"rfc@edk2.groups.io" <rfc@edk2.groups.io>
Cc: Laszlo Ersek <lersek@redhat.com>,
Brijesh Singh <brijesh.singh@amd.com>,
Tom Lendacky <thomas.lendacky@amd.com>,
"erdemaktas@google.com" <erdemaktas@google.com>,
"cho@microsoft.com" <cho@microsoft.com>,
"bret.barkelew@microsoft.com" <bret.barkelew@microsoft.com>,
Jon Lange <jlange@microsoft.com>, Karen Noel <knoel@redhat.com>,
Nathaniel McCallum <npmccallum@redhat.com>,
"Dr. David Alan Gilbert" <dgilbert@redhat.com>,
"Ademar de Souza Reis Jr." <areis@redhat.com>
Subject: Re: [edk2-rfc] [edk2-devel] RFC: design review for TDVF in OVMF
Date: Wed, 9 Jun 2021 17:47:58 +0200 [thread overview]
Message-ID: <b9f473da-3a93-1e97-490d-d855696366b9@redhat.com> (raw)
In-Reply-To: <d3d23deb0ba5c9bd6e89b86f1034f5c62c192ea0.camel@linux.ibm.com>
On 09/06/21 16:28, James Bottomley wrote:
> That would cut across the ApEntrypoint and the guidedStructureEnd.
> However, nothing says anything in the reset vector guided structure has
> to be data ... so it could equally well be code. That means we can do
> guid based entries that contain the 32 bit real and 64 bit entry
> points. This would also come with the added advantage that we can scan
> the OVMF binary to see what entry points it supports.
Isn't the initial state included in the save area just like for SEV-ES?
So it's not even QEMU, but rather some external tool that builds the
encrypted image, that needs to understand that GUIDed structure.
The GUIDed structure can either include the entry point code; or it
could have room for a couple 8-byte pointers since any fixed-size area
in the GUIDed structure would be just a jump anyway.
Paolo
next prev parent reply other threads:[~2021-06-09 15:48 UTC|newest]
Thread overview: 42+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-06-03 13:51 [edk2-rfc] [edk2-devel] RFC: design review for TDVF in OVMF Yao, Jiewen
2021-06-03 16:11 ` Laszlo Ersek
2021-06-03 23:19 ` Yao, Jiewen
2021-06-04 10:11 ` Laszlo Ersek
2021-06-04 10:24 ` Yao, Jiewen
2021-06-04 10:43 ` Michael Brown
2021-06-04 14:52 ` Michael Brown
2021-06-04 15:04 ` James Bottomley
2021-06-04 7:33 ` Min Xu
2021-06-06 2:03 ` Min Xu
2021-06-06 11:29 ` Michael Brown
2021-06-06 12:49 ` Min Xu
2021-06-07 13:52 ` Laszlo Ersek
2021-06-06 8:52 ` Min Xu
2021-06-06 11:39 ` Michael Brown
2021-06-08 12:27 ` Min Xu
2021-06-08 15:36 ` Laszlo Ersek
2021-06-08 16:01 ` James Bottomley
2021-06-08 19:33 ` Laszlo Ersek
2021-06-09 0:58 ` Min Xu
2021-06-09 11:00 ` Laszlo Ersek
2021-06-09 14:36 ` James Bottomley
2021-06-09 2:01 ` Min Xu
2021-06-09 14:28 ` James Bottomley
2021-06-09 15:47 ` Paolo Bonzini [this message]
2021-06-09 15:59 ` James Bottomley
2021-06-10 21:01 ` Erdem Aktas
2021-06-10 22:30 ` Min Xu
2021-06-11 1:33 ` James Bottomley
2021-06-11 1:36 ` Yao, Jiewen
2021-06-11 1:38 ` James Bottomley
2021-06-11 1:55 ` James Bottomley
[not found] ` <168759329436FBCF.5845@groups.io>
2021-06-11 6:37 ` Min Xu
2021-06-22 13:34 ` Laszlo Ersek
2021-06-22 13:38 ` Laszlo Ersek
2021-06-24 0:24 ` Min Xu
2021-06-24 0:35 ` James Bottomley
2021-06-24 0:55 ` Min Xu
[not found] ` <168B5EA81BA66FAC.7570@groups.io>
2021-07-01 5:00 ` Min Xu
2021-06-23 2:44 ` Min Xu
2021-06-23 17:47 ` Laszlo Ersek
2021-06-23 11:56 ` Min Xu
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