From: "Michael Brown" <mcb30@ipxe.org>
To: devel@edk2.groups.io
Cc: Michael Brown <mcb30@ipxe.org>, Ray Ni <ray.ni@intel.com>,
Laszlo Ersek <lersek@redhat.com>,
Gerd Hoffmann <kraxel@redhat.com>,
Michael D Kinney <michael.d.kinney@intel.com>
Subject: [edk2-devel] [PATCH v2 0/2] Move NestedInterruptTplLib to MdeModulePkg
Date: Sat, 20 Jan 2024 17:08:28 +0000 [thread overview]
Message-ID: <0102018d27d85f80-8a6e0198-7593-4930-86e0-efcb25e6d273-000000@eu-west-1.amazonses.com> (raw)
In-Reply-To: <17AC1CE6B1CDE741.7395@groups.io>
NestedInterruptTplLib provides a way for timer interrupt handlers
(which must support nested interrupts) to prevent unbounded stack
consumption.
The underlying issue was first observed in OvmfPkg, since interrupt
storms can arise more easily in virtual machines due to CPU
starvation. However, careful investigation shows that the unbounded
stack consumption can also occur in physical machines.
Move NestedInterruptTplLib from OvmfPkg to MdeModulePkg so that it can
more easily be consumed by drivers outside of OvmfPkg.
Changes since v1:
- Add missing Iret.h to NestedInterruptTplLib sources list
Cc: Ray Ni <ray.ni@intel.com>
Cc: Laszlo Ersek <lersek@redhat.com>
Cc: Gerd Hoffmann <kraxel@redhat.com>
Cc: Michael D Kinney <michael.d.kinney@intel.com>
Michael Brown (2):
MdeModulePkg: Move NestedInterruptTplLib to MdeModulePkg
MdeModulePkg: Add missing Iret.h to NestedInterruptTplLib sources list
MdeModulePkg/MdeModulePkg.dec | 4 ++++
OvmfPkg/OvmfPkg.dec | 4 ----
OvmfPkg/AmdSev/AmdSevX64.dsc | 2 +-
OvmfPkg/CloudHv/CloudHvX64.dsc | 2 +-
OvmfPkg/IntelTdx/IntelTdxX64.dsc | 2 +-
OvmfPkg/Microvm/MicrovmX64.dsc | 2 +-
OvmfPkg/OvmfPkgIa32.dsc | 2 +-
OvmfPkg/OvmfPkgIa32X64.dsc | 2 +-
OvmfPkg/OvmfPkgX64.dsc | 2 +-
OvmfPkg/OvmfXen.dsc | 2 +-
UefiPayloadPkg/UefiPayloadPkg.dsc | 2 +-
.../Library/NestedInterruptTplLib/NestedInterruptTplLib.inf | 3 ++-
OvmfPkg/LocalApicTimerDxe/LocalApicTimerDxe.inf | 1 +
.../Include/Library/NestedInterruptTplLib.h | 0
.../Library/NestedInterruptTplLib/Iret.h | 0
.../Library/NestedInterruptTplLib/Iret.c | 0
{OvmfPkg => MdeModulePkg}/Library/NestedInterruptTplLib/Tpl.c | 0
17 files changed, 16 insertions(+), 14 deletions(-)
rename {OvmfPkg => MdeModulePkg}/Library/NestedInterruptTplLib/NestedInterruptTplLib.inf (90%)
rename {OvmfPkg => MdeModulePkg}/Include/Library/NestedInterruptTplLib.h (100%)
rename {OvmfPkg => MdeModulePkg}/Library/NestedInterruptTplLib/Iret.h (100%)
rename {OvmfPkg => MdeModulePkg}/Library/NestedInterruptTplLib/Iret.c (100%)
rename {OvmfPkg => MdeModulePkg}/Library/NestedInterruptTplLib/Tpl.c (100%)
--
2.43.0
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next parent reply other threads:[~2024-01-20 17:08 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <17AC1CE6B1CDE741.7395@groups.io>
2024-01-20 17:08 ` Michael Brown [this message]
[not found] ` <20240120170814.1777073-1-mcb30@ipxe.org>
2024-01-20 17:08 ` [edk2-devel] [PATCH v2 1/2] MdeModulePkg: Move NestedInterruptTplLib to MdeModulePkg Michael Brown
2024-01-22 10:36 ` Laszlo Ersek
2024-01-23 14:10 ` Michael Brown
2024-01-20 17:08 ` [edk2-devel] [PATCH v2 2/2] MdeModulePkg: Add missing Iret.h to NestedInterruptTplLib sources list Michael Brown
2024-01-22 10:39 ` Laszlo Ersek
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