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From: "Marvin Häuser" <mhaeuser@posteo.de>
To: Ard Biesheuvel <ardb@kernel.org>,devel@edk2.groups.io
Subject: Re: [edk2-devel] [RFC PATCH 2/3] MdeModulePkg: Enable forward edge CFI in mem attributes table
Date: Fri, 03 Feb 2023 00:25:38 -0800	[thread overview]
Message-ID: <20118.1675412738875218763@groups.io> (raw)
In-Reply-To: <CAMj1kXGBh6ka9mSYtfkCbz1wScLaZdwP7gDF6Lewk9=4jr=xFQ@mail.gmail.com>

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Hi Ard,

Short story: No, TE is not a concern for RT drivers, at least not upstream [1].

Long story: Even if a downstream added support for RT relocation itself, TE images are loaded misaligned by DxeCore, because it lacks a (terrible) workaround as done in PeiCore [2]. It doesn’t look like anyone tried to use them in DXE at all.

Best regards,
Marvin

[1] https://github.com/tianocore/edk2/blob/11f0014c0e3046e3762eac420b760091d0cdc063/MdePkg/Library/BasePeCoffLib/BasePeCoff.c#L1759

[2] https://github.com/tianocore/edk2/blob/11f0014c0e3046e3762eac420b760091d0cdc063/MdeModulePkg/Core/Pei/Image/Image.c#L412

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  parent reply	other threads:[~2023-02-03  8:25 UTC|newest]

Thread overview: 17+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2023-02-02 18:03 [RFC PATCH 0/3] enable IBT/BTI codegen and reporting to the OS Ard Biesheuvel
2023-02-02 18:03 ` [RFC PATCH 1/3] MdePkg: Update MemoryAttributesTable to v2.10 Ard Biesheuvel
2023-02-02 18:44   ` [edk2-devel] " Michael D Kinney
2023-02-03  0:26   ` Michael Kubacki
2023-02-02 18:03 ` [RFC PATCH 2/3] MdeModulePkg: Enable forward edge CFI in mem attributes table Ard Biesheuvel
2023-02-02 18:48   ` Michael D Kinney
2023-02-02 19:00     ` Ard Biesheuvel
2023-02-03  0:24       ` [edk2-devel] " Michael Kubacki
2023-02-03  1:16         ` Yao, Jiewen
2023-02-03  8:26           ` Ard Biesheuvel
2023-02-03  9:52             ` Marvin Häuser
2023-02-03 10:10               ` Yao, Jiewen
2023-03-24 21:48         ` Michael Kubacki
2023-02-03  8:25       ` Marvin Häuser [this message]
2023-02-03  8:28         ` Ard Biesheuvel
2023-02-03  8:34           ` Marvin Häuser
2023-02-02 18:03 ` [RFC PATCH 3/3] ArmVirtPkg/ArmVirtQemu: Implement BTI for runtime regions Ard Biesheuvel

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