a086f4a63b
Prevent stack underrun in the event of a timer interrupt storm in
LocalApicTimerDxe and 8254TimerDxe interrupt handlers by using the
helper functions provided by NestedInterruptTplLib.
This fixes the same problem as addressed in commit 239b50a86
("OvmfPkg: End timer interrupt later to avoid stack overflow under
load"), but does so without breaking nested timer interrupts.
Cc: Paolo Bonzini <pbonzini@redhat.com>
Ref: https://bugzilla.tianocore.org/show_bug.cgi?id=2815
Ref: https://bugzilla.tianocore.org/show_bug.cgi?id=4162
Signed-off-by: Michael Brown <mcb30@ipxe.org>
Acked-by: Laszlo Ersek <lersek@redhat.com>
44 lines
1.0 KiB
INI
44 lines
1.0 KiB
INI
## @file
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# 8254 timer driver that provides Timer Arch protocol.
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#
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# Copyright (c) 2005 - 2019, Intel Corporation. All rights reserved.<BR>
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# SPDX-License-Identifier: BSD-2-Clause-Patent
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#
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##
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[Defines]
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INF_VERSION = 0x00010005
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BASE_NAME = Timer
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MODULE_UNI_FILE = Timer.uni
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FILE_GUID = C190FE35-44AA-41A1-8AEA-4947BC60E09D
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MODULE_TYPE = DXE_DRIVER
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VERSION_STRING = 1.0
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ENTRY_POINT = TimerDriverInitialize
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[Packages]
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MdePkg/MdePkg.dec
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OvmfPkg/OvmfPkg.dec
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[LibraryClasses]
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UefiBootServicesTableLib
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BaseLib
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DebugLib
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NestedInterruptTplLib
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UefiDriverEntryPoint
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IoLib
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[Sources]
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Timer.h
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Timer.c
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[Protocols]
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gEfiCpuArchProtocolGuid ## CONSUMES
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gEfiLegacy8259ProtocolGuid ## CONSUMES
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gEfiTimerArchProtocolGuid ## PRODUCES
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[Depex]
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gEfiCpuArchProtocolGuid AND gEfiLegacy8259ProtocolGuid
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[UserExtensions.TianoCore."ExtraFiles"]
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TimerExtra.uni
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