From: "Ni, Ray" <ray.ni@intel.com>
To: Gerd Hoffmann <kraxel@redhat.com>
Cc: "devel@edk2.groups.io" <devel@edk2.groups.io>,
Oliver Steffen <osteffen@redhat.com>,
Laszlo Ersek <lersek@redhat.com>,
"Kumar, Rahul R" <rahul.r.kumar@intel.com>
Subject: Re: [edk2-devel] [PATCH 1/5] UefiCpuPkg/MpInitLib: Add ProcessorIndex argument to GetMpHandOffHob()
Date: Tue, 20 Feb 2024 03:42:08 +0000 [thread overview]
Message-ID: <MN6PR11MB8244D124FE775F8A6426105B8C502@MN6PR11MB8244.namprd11.prod.outlook.com> (raw)
In-Reply-To: <ugyfrwr75cux4rtfjkpmq2bsnzayoy2k3mli76yb6fja4k7ns7@obkywj3wnknv>
>
> That will only work if the HOBs are returned in ProcessorIndex order.
>
> That happens to be the case in my testing; the HOBs are returned in the
> same order they are created by patch #5 of this series.
>
> Is that behavior guaranteed? MdePkg/Include/Library/HobLib.h doesn't
> say anything about the ordering.
The HOB item order follows when it's created.
The HOB structure implicitly guarantees it.
I am aware that in a production server UEFI firmware, the number of HOB items is huge.
Enumerating the HOB list multiple times is a big cost.
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next prev parent reply other threads:[~2024-02-20 3:42 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-02-15 9:31 [edk2-devel] [PATCH 0/5] UefiCpuPkg/MpInitLib: Add support for multiple MP_HAND_OFF HOBs Gerd Hoffmann
2024-02-15 9:31 ` [edk2-devel] [PATCH 1/5] UefiCpuPkg/MpInitLib: Add ProcessorIndex argument to GetMpHandOffHob() Gerd Hoffmann
2024-02-19 2:34 ` Ni, Ray
2024-02-19 9:51 ` Gerd Hoffmann
2024-02-20 3:42 ` Ni, Ray [this message]
2024-02-19 11:18 ` Laszlo Ersek
2024-02-15 9:31 ` [edk2-devel] [PATCH 2/5] UefiCpuPkg/MpInitLib: Add support for multiple HOBs to GetBspNumber() Gerd Hoffmann
2024-02-19 2:41 ` Ni, Ray
2024-02-19 11:18 ` Laszlo Ersek
2024-02-19 11:37 ` Gerd Hoffmann
2024-02-19 20:02 ` Laszlo Ersek
2024-02-15 9:31 ` [edk2-devel] [PATCH 3/5] UefiCpuPkg/MpInitLib: Add support for multiple HOBs to SwitchApContext() Gerd Hoffmann
2024-02-19 2:43 ` Ni, Ray
2024-02-19 11:25 ` Laszlo Ersek
2024-02-15 9:31 ` [edk2-devel] [PATCH 4/5] UefiCpuPkg/MpInitLib: Add support for multiple HOBs to MpInitLibInitialize Gerd Hoffmann
2024-02-19 2:57 ` Ni, Ray
2024-02-19 11:56 ` Laszlo Ersek
2024-02-15 9:31 ` [edk2-devel] [PATCH 5/5] UefiCpuPkg/MpInitLib: Add support for multiple HOBs to SaveCpuMpData() Gerd Hoffmann
2024-02-19 3:02 ` Ni, Ray
2024-02-19 12:50 ` Laszlo Ersek
2024-02-20 7:35 ` Ni, Ray
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