From: "Gerd Hoffmann" <kraxel@redhat.com>
To: Min Xu <min.m.xu@intel.com>
Cc: devel@edk2.groups.io, Ard Biesheuvel <ardb+tianocore@kernel.org>,
Jordan Justen <jordan.l.justen@intel.com>,
Brijesh Singh <brijesh.singh@amd.com>,
Erdem Aktas <erdemaktas@google.com>,
James Bottomley <jejb@linux.ibm.com>,
Jiewen Yao <jiewen.yao@intel.com>,
Tom Lendacky <thomas.lendacky@amd.com>
Subject: Re: [PATCH V9 3/4] OvmfPkg: Add IntelTdxMetadata.asm
Date: Tue, 12 Oct 2021 09:22:28 +0200 [thread overview]
Message-ID: <20211012072228.h3meki5hmw27fn32@sirius.home.kraxel.org> (raw)
In-Reply-To: <62bb7a8bf025bce78b012c8f92d59cbd203f3674.1634005437.git.min.m.xu@intel.com>
Hi,
> +; - Type field means this section is of BFV. This field is designed for the
> +; purpose that in some case host VMM may do some additional processing based
> +; upon the section type. TdHob section is an example. Host VMM pass the
> +; physical memory information to the guest firmware by writing the data in
> +; the memory region designated by TdHob section.
Brijesh? What are your plans? Do you want use this too?
If so, then the section types need some more structure. I think best
would be reserve blocks, something like 0x00 -> 0xff common types (bfv,
cfv, temp_mem), 0x100 -> 0x1ff tdx (td_hob), 0x200 -> 0x2ff sev (cpuid,
secrets, ...).
take care,
Gerd
next prev parent reply other threads:[~2021-10-12 7:22 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-10-12 2:37 [PATCH V9 0/4] Add Intel TDX support in OvmfPkg/ResetVector Min Xu
2021-10-12 2:37 ` [PATCH V9 1/4] OvmfPkg: Copy Main.asm from UefiCpuPkg to OvmfPkg's ResetVector Min Xu
2021-10-12 7:02 ` Gerd Hoffmann
2021-10-13 0:39 ` Min Xu
2021-10-12 2:37 ` [PATCH V9 2/4] OvmfPkg: Clear WORK_AREA_GUEST_TYPE in Main.asm Min Xu
2021-10-12 7:02 ` Gerd Hoffmann
2021-10-12 13:22 ` Lendacky, Thomas
2021-10-13 0:58 ` [edk2-devel] " Min Xu
2021-10-13 15:45 ` Brijesh Singh
2021-10-14 1:50 ` Min Xu
2021-10-12 2:37 ` [PATCH V9 3/4] OvmfPkg: Add IntelTdxMetadata.asm Min Xu
2021-10-12 7:22 ` Gerd Hoffmann [this message]
2021-10-13 11:44 ` [edk2-devel] " Brijesh Singh
2021-10-13 13:07 ` Gerd Hoffmann
2021-10-12 2:37 ` [PATCH V9 4/4] OvmfPkg: Enable TDX in ResetVector Min Xu
2021-10-12 7:43 ` Gerd Hoffmann
2021-10-13 5:16 ` [edk2-devel] " Min Xu
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