From: "Gerd Hoffmann" <kraxel@redhat.com>
To: Laszlo Ersek <lersek@redhat.com>
Cc: devel@edk2.groups.io, taylor.d.beebe@gmail.com,
Ard Biesheuvel <ardb@kernel.org>,
Jian J Wang <jian.j.wang@intel.com>,
Liming Gao <gaoliming@byosoft.com.cn>,
Nhi Pham <nhi@os.amperecomputing.com>,
Oliver Steffen <osteffen@redhat.com>
Subject: Re: [edk2-devel] [PATCH v4 20/28] MdeModulePkg: Add Additional Profiles to SetMemoryProtectionsLib
Date: Thu, 5 Oct 2023 11:29:08 +0200 [thread overview]
Message-ID: <obmpdjppx44hg2kioq2z3tkiy5vw2cod3atguosgd6swfk655t@naw3dfztwdtj> (raw)
In-Reply-To: <8ae346cc-36c0-55da-e939-bdf22ff5b7f4@redhat.com>
Hi,
> On x86, PEI can use IO ports (no page tables), but that's not available
> on ARM. I don't recall off-hand where / when exactly page tables are set
> up during ArmVirtQemu boot.
It also changed roughly one year ago, Ard updated the arm platform setup
to turn on paging much earlier (for w^x and IIRC also fix some caching
problems). I think PEI runs with paging already enabled these days.
> > An Arm compatible PEIM instance of QemuFwCfgLib will need to be created.
> > I'm happy to look into it, but I don't want to hang up this patch series on
> > that addition. Instead, I'll set the protection policy for ArmVirtPkg to
> > the equivalent of the new GrubCompat profile in this series.
>
> Can you base the default policy (i.e., the one that takes effect in the
> absence of fw_cfg) on a PCD?
That would be nice indeed.
take care,
Gerd
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next prev parent reply other threads:[~2023-10-05 9:29 UTC|newest]
Thread overview: 38+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-09-20 0:57 [edk2-devel] [PATCH v4 00/28] Implement Dynamic Memory Protection Settings Taylor Beebe
2023-09-20 0:57 ` [edk2-devel] [PATCH v4 01/28] MdeModulePkg: Add DXE and MM Memory Protection Settings Definitions Taylor Beebe
2023-09-20 0:57 ` [edk2-devel] [PATCH v4 02/28] MdeModulePkg: Define SetMemoryProtectionsLib and GetMemoryProtectionsLib Taylor Beebe
2023-09-20 0:57 ` [edk2-devel] [PATCH v4 03/28] MdeModulePkg: Add NULL Instances for Get/SetMemoryProtectionsLib Taylor Beebe
2023-09-20 0:57 ` [edk2-devel] [PATCH v4 04/28] MdeModulePkg: Implement SetMemoryProtectionsLib and GetMemoryProtectionsLib Taylor Beebe
2023-09-20 0:57 ` [edk2-devel] [PATCH v4 05/28] MdeModulePkg: Copy PEI PCD Database Into New Buffer Taylor Beebe
2023-09-20 0:57 ` [edk2-devel] [PATCH v4 06/28] MdeModulePkg: Apply Protections to the HOB List Taylor Beebe
2023-09-20 0:57 ` [edk2-devel] [PATCH v4 07/28] MdeModulePkg: Check Print Level Before Dumping GCD Memory Map Taylor Beebe
2023-09-20 0:57 ` [edk2-devel] [PATCH v4 08/28] UefiCpuPkg: Always Set Stack Guard in MpPei Init Taylor Beebe
2023-09-20 0:57 ` [edk2-devel] [PATCH v4 09/28] ArmVirtPkg: Add Memory Protection Library Definitions to Platforms Taylor Beebe
2023-09-20 0:57 ` [edk2-devel] [PATCH v4 10/28] OvmfPkg: " Taylor Beebe
2023-09-20 0:57 ` [edk2-devel] [PATCH v4 11/28] OvmfPkg: Apply Memory Protections via SetMemoryProtectionsLib Taylor Beebe
2023-09-20 0:57 ` [edk2-devel] [PATCH v4 12/28] OvmfPkg: Update PeilessStartupLib to use SetMemoryProtectionsLib Taylor Beebe
2023-09-20 0:57 ` [edk2-devel] [PATCH v4 13/28] UefiPayloadPkg: Update DXE Handoff " Taylor Beebe
2023-09-20 0:57 ` [edk2-devel] [PATCH v4 14/28] MdeModulePkg: " Taylor Beebe
2023-09-20 0:57 ` [edk2-devel] [PATCH v4 15/28] ArmPkg: Use GetMemoryProtectionsLib instead of Memory Protection PCDs Taylor Beebe
2023-09-20 0:57 ` [edk2-devel] [PATCH v4 16/28] EmulatorPkg: " Taylor Beebe
2023-09-20 0:57 ` [edk2-devel] [PATCH v4 17/28] OvmfPkg: " Taylor Beebe
2023-09-20 0:57 ` [edk2-devel] [PATCH v4 18/28] UefiCpuPkg: " Taylor Beebe
2023-09-20 0:57 ` [edk2-devel] [PATCH v4 19/28] MdeModulePkg: " Taylor Beebe
2023-09-20 0:57 ` [edk2-devel] [PATCH v4 20/28] MdeModulePkg: Add Additional Profiles to SetMemoryProtectionsLib Taylor Beebe
2023-09-27 8:19 ` Gerd Hoffmann
2023-09-29 19:52 ` Taylor Beebe
2023-10-04 8:46 ` Gerd Hoffmann
2023-10-04 16:31 ` Taylor Beebe
2023-10-05 8:20 ` Laszlo Ersek
2023-10-05 9:29 ` Gerd Hoffmann [this message]
2023-10-05 10:23 ` Gerd Hoffmann
2023-10-05 12:57 ` Laszlo Ersek
2023-10-08 20:26 ` Taylor Beebe
2023-09-20 0:57 ` [edk2-devel] [PATCH v4 21/28] OvmfPkg: Add QemuFwCfgParseString to QemuFwCfgSimpleParserLib Taylor Beebe
2023-09-20 0:57 ` [edk2-devel] [PATCH v4 22/28] OvmfPkg: Add MemoryProtectionConfigLib Taylor Beebe
2023-09-20 0:57 ` [edk2-devel] [PATCH v4 23/28] OvmfPkg: Enable Choosing Memory Protection Profile via QemuCfg Taylor Beebe
2023-09-20 0:57 ` [edk2-devel] [PATCH v4 24/28] ArmVirtPkg: Apply Memory Protections via SetMemoryProtectionsLib Taylor Beebe
2023-09-20 0:57 ` [edk2-devel] [PATCH v4 25/28] MdeModulePkg: Delete PCD Profile from SetMemoryProtectionsLib Taylor Beebe
2023-09-20 0:57 ` [edk2-devel] [PATCH v4 26/28] OvmfPkg: Delete Memory Protection PCDs Taylor Beebe
2023-09-20 0:57 ` [edk2-devel] [PATCH v4 27/28] ArmVirtPkg: " Taylor Beebe
2023-09-20 0:57 ` [edk2-devel] [PATCH v4 28/28] MdeModulePkg: " Taylor Beebe
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