From: "Ard Biesheuvel" <ardb@kernel.org>
To: devel@edk2.groups.io
Cc: Ard Biesheuvel <ardb@kernel.org>,
Leif Lindholm <quic_llindhol@quicinc.com>,
Alexander Graf <agraf@csgraf.de>,
Gerd Hoffmann <kraxel@redhat.com>,
Sami Mujawar <Sami.Mujawar@arm.com>
Subject: [PATCH v3 resend 09/11] ArmVirtPkg/ArmVirtQemu: avoid shadowing PEIMs unless necessary
Date: Wed, 19 Oct 2022 11:22:09 +0200 [thread overview]
Message-ID: <20221019092211.465699-10-ardb@kernel.org> (raw)
In-Reply-To: <20221019092211.465699-1-ardb@kernel.org>
Some PEIMs register for shadow execution explicitly, but others exist
that don't care and can happily execute in place. Since the emulated NOR
flash is just RAM, shadowing has no performance benefits so let's only
do this if needed.
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
---
ArmVirtPkg/ArmVirtQemu.dsc | 3 +++
1 file changed, 3 insertions(+)
diff --git a/ArmVirtPkg/ArmVirtQemu.dsc b/ArmVirtPkg/ArmVirtQemu.dsc
index de34481673ea..c3d264077bce 100644
--- a/ArmVirtPkg/ArmVirtQemu.dsc
+++ b/ArmVirtPkg/ArmVirtQemu.dsc
@@ -217,6 +217,9 @@ [PcdsFixedAtBuild.common]
gEfiMdePkgTokenSpaceGuid.PcdReportStatusCodePropertyMask|3
gEfiShellPkgTokenSpaceGuid.PcdShellFileOperationSize|0x20000
+ # Shadowing PEI modules is absolutely pointless when the NOR flash is emulated
+ gEfiMdeModulePkgTokenSpaceGuid.PcdShadowPeimOnBoot|FALSE
+
[PcdsFixedAtBuild.AARCH64]
# Clearing BIT0 in this PCD prevents installing a 32-bit SMBIOS entry point,
# if the entry point version is >= 3.0. AARCH64 OSes cannot assume the
--
2.35.1
next prev parent reply other threads:[~2022-10-19 9:22 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-10-19 9:22 [PATCH v3 resend 00/11] ArmVirtPkg/ArmVirtQemu: Performance streamlining Ard Biesheuvel
2022-10-19 9:22 ` [PATCH v3 resend 01/11] ArmVirtPkg: remove EbcDxe from all platforms Ard Biesheuvel
2022-10-20 8:58 ` [edk2-devel] " Leif Lindholm
2022-10-19 9:22 ` [PATCH v3 resend 02/11] ArmVirtPkg: do not enable iSCSI driver by default Ard Biesheuvel
2022-10-20 9:03 ` Leif Lindholm
2022-10-20 12:34 ` Ard Biesheuvel
2022-10-19 9:22 ` [PATCH v3 resend 03/11] ArmVirtPkg: make EFI_LOADER_DATA non-executable Ard Biesheuvel
2022-10-19 9:22 ` [PATCH v3 resend 04/11] ArmVirtPkg/ArmVirtQemu: wire up timeout PCD to Timeout variable Ard Biesheuvel
2022-10-19 9:22 ` [PATCH v3 resend 05/11] ArmVirtPkg/ArmVirtQemu: implement ArmPlatformLib with static ID map Ard Biesheuvel
2022-10-19 9:22 ` [PATCH v3 resend 06/11] ArmVirtPkg/ArmVirtQemu: use first 128 MiB as permanent PEI memory Ard Biesheuvel
2022-10-19 9:22 ` [PATCH v3 resend 07/11] ArmVirtPkg/ArmVirtQemu: enable initial ID map at early boot Ard Biesheuvel
2022-11-08 15:59 ` Gerd Hoffmann
2022-10-19 9:22 ` [PATCH v3 resend 08/11] ArmVirtPkg/ArmVirtQemu: Drop unused variable PEIM Ard Biesheuvel
2022-10-19 9:22 ` Ard Biesheuvel [this message]
2022-10-19 9:22 ` [PATCH v3 resend 10/11] ArmVirtPkg/QemuVirtMemInfoLib: use HOB not PCD to record the memory size Ard Biesheuvel
2022-10-19 9:22 ` [PATCH v3 resend 11/11] ArmVirtPkg/ArmVirtQemu: omit PCD PEIM unless TPM support is enabled Ard Biesheuvel
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