mirror of
https://github.com/acidanthera/audk.git
synced 2025-08-23 10:38:09 +02:00
dfb941d32a
Instead of relying on raising the TPL to protect the critical sections that manipulate the global bitmask that keeps track of bounce buffer allocations, use compare-and-exchange to manage the global variable, and tweak the logic to line up with that. Given that IoMmuDxe implements a singleton protocol that is shared between multiple drivers, and considering the elaborate and confusing requirements in the UEFP spec regarding TPL levels at which protocol methods may be invoked, not relying on TPL levels at all is a more robust approach in this case. Link: https://bugzilla.redhat.com/show_bug.cgi?id=2211060 Signed-off-by: Ard Biesheuvel <ardb@kernel.org> Acked-by: Pedro Falcato <pedro.falcato@gmail.com>
51 lines
1.1 KiB
INI
51 lines
1.1 KiB
INI
#/** @file
|
|
#
|
|
# Driver provides the IOMMU protcol support for PciHostBridgeIo and others
|
|
# drivers.
|
|
#
|
|
# Copyright (c) 2017, AMD Inc. All rights reserved.<BR>
|
|
#
|
|
# SPDX-License-Identifier: BSD-2-Clause-Patent
|
|
#
|
|
#**/
|
|
|
|
[Defines]
|
|
INF_VERSION = 1.25
|
|
BASE_NAME = IoMmuDxe
|
|
FILE_GUID = 8657015b-ea43-440d-949a-af3be365c0fc
|
|
MODULE_TYPE = DXE_DRIVER
|
|
VERSION_STRING = 1.0
|
|
ENTRY_POINT = IoMmuDxeEntryPoint
|
|
|
|
[Sources]
|
|
CcIoMmu.c
|
|
CcIoMmu.h
|
|
IoMmuDxe.c
|
|
IoMmuBuffer.c
|
|
|
|
[Packages]
|
|
MdePkg/MdePkg.dec
|
|
MdeModulePkg/MdeModulePkg.dec
|
|
OvmfPkg/OvmfPkg.dec
|
|
|
|
[LibraryClasses]
|
|
BaseLib
|
|
BaseMemoryLib
|
|
DebugLib
|
|
MemEncryptSevLib
|
|
MemEncryptTdxLib
|
|
MemoryAllocationLib
|
|
SynchronizationLib
|
|
UefiBootServicesTableLib
|
|
UefiDriverEntryPoint
|
|
|
|
[Pcd]
|
|
gEfiMdePkgTokenSpaceGuid.PcdConfidentialComputingGuestAttr
|
|
|
|
[Protocols]
|
|
gEdkiiIoMmuProtocolGuid ## SOMETIME_PRODUCES
|
|
gIoMmuAbsentProtocolGuid ## SOMETIME_PRODUCES
|
|
|
|
[Depex]
|
|
TRUE
|