Reviewed-by: Jiewen Yao <Jiewen.yao@intel.com>
Merged https://github.com/tianocore/edk2/pull/3813
> -----Original Message-----
> From: Xu, Min M <min.m.xu@intel.com>
> Sent: Tuesday, December 20, 2022 4:43 PM
> To: devel@edk2.groups.io
> Cc: Xu, Min M <min.m.xu@intel.com>; Aktas, Erdem
> <erdemaktas@google.com>; Gerd Hoffmann <kraxel@redhat.com>; James
> Bottomley <jejb@linux.ibm.com>; Yao, Jiewen <jiewen.yao@intel.com>; Tom
> Lendacky <thomas.lendacky@amd.com>
> Subject: [PATCH V2 0/6] Enable Multi-core based lazy-accept for TDVF
>
> BZ: https://bugzilla.tianocore.org/show_bug.cgi?id=4172
>
> TDVF once accepts memory only by BSP. To improve the boot performance
> this patch-set introduce the multi-core accpet memory. Multi-core means
> BSP and APs work together to accept memory.
>
> TDVF leverages mailbox to wake up APs. It is not enabled in MpInitLib
> (Which requires SIPI). So multi-core accept memory cannot leverages
> MpInitLib to coordinate BSP and APs to work together.
>
> So TDVF split the accept memory into 2 phases.
> - AcceptMemoryForAPsStack:
> BSP accepts a small piece of memory which is then used by APs to setup
> stack. We assign a 16KB stack for each AP. So a td-guest with 256 vCPU
> requires 255*16KB = 4080KB.
> - AcceptMemory:
> After above small piece of memory is accepted, BSP commands APs to
> accept memory by sending AcceptPages command in td-mailbox. Together
> with the command and accpet-function, the APsStack address is send
> as well. APs then set the stack and jump to accept-function to accept
> memory.
>
> Patch 1-3:
> TdxMailboxLib is refactored to help multi-core lazy accept.
> Patch 4-5:
> Refactor APs' logical to support accpet page.
> Patch 6:
> Implement multi-core accept in TDVF.
>
> Code: https://github.com/mxu9/edk2/tree/Multi-Core-Lazy-Accept.v2
>
> v2 changes:
> - Fix an override error when vCPU number is larger than 64.
>
> Cc: Erdem Aktas <erdemaktas@google.com>
> Cc: Gerd Hoffmann <kraxel@redhat.com>
> Cc: James Bottomley <jejb@linux.ibm.com>
> Cc: Jiewen Yao <jiewen.yao@intel.com>
> Cc: Tom Lendacky <thomas.lendacky@amd.com>
> Signed-off-by: Min Xu <min.m.xu@intel.com>
>
> Min M Xu (6):
> OvmfPkg/TdxMailboxLib: Delete global variables
> OvmfPkg/TdxMailboxLib: Add NULL instance of TdxMailboxLib
> OvmfPkg: Add TdxMailboxLibNull in some platform dsc
> OvmfPkg/Sec: Move TDX APs related nasm code to IntelTdxAPs.nasm
> OvmfPkg: Enable APs to accept memory for TDVF
> OvmfPkg/PlatformInitLib: Implement multi-core accept memory for TDVF
>
> OvmfPkg/AmdSev/AmdSevX64.dsc | 1 +
> OvmfPkg/CloudHv/CloudHvX64.dsc | 1 +
> OvmfPkg/Include/TdxCommondefs.inc | 4 +-
> OvmfPkg/IntelTdx/Sec/X64/IntelTdxAPs.nasm | 119 +++++
> OvmfPkg/IntelTdx/Sec/X64/SecEntry.nasm | 58 +--
> OvmfPkg/Library/PlatformInitLib/IntelTdx.c | 411 +++++++++++++++---
> .../PlatformInitLib/PlatformInitLib.inf | 1 +
> OvmfPkg/Library/TdxMailboxLib/TdxMailbox.c | 22 +-
> .../Library/TdxMailboxLib/TdxMailboxLib.inf | 7 +-
> .../TdxMailboxLib/TdxMailboxLibNull.inf | 34 ++
> OvmfPkg/Microvm/MicrovmX64.dsc | 1 +
> OvmfPkg/OvmfPkgIa32.dsc | 1 +
> OvmfPkg/OvmfPkgIa32X64.dsc | 2 +-
> OvmfPkg/Sec/X64/SecEntry.nasm | 58 +--
> 14 files changed, 545 insertions(+), 175 deletions(-)
> create mode 100644 OvmfPkg/IntelTdx/Sec/X64/IntelTdxAPs.nasm
> create mode 100644 OvmfPkg/Library/TdxMailboxLib/TdxMailboxLibNull.inf
>
> --
> 2.29.2.windows.2
-=-=-=-=-=-=-=-=-=-=-=-
Groups.io Links: You receive all messages sent to this group.
View/Reply Online (#97680): https://edk2.groups.io/g/devel/message/97680
Mute This Topic: https://groups.io/mt/95782426/1787277
Group Owner: devel+owner@edk2.groups.io
Unsubscribe: https://edk2.groups.io/g/devel/unsub [importer@patchew.org]
-=-=-=-=-=-=-=-=-=-=-=-