From: "Michael Brown" <mcb30@ipxe.org>
To: devel@edk2.groups.io
Cc: Michael Brown <mcb30@ipxe.org>, Laszlo Ersek <lersek@redhat.com>,
Paolo Bonzini <pbonzini@redhat.com>
Subject: [PATCH 3/3] OvmfPkg: Use NestedInterruptTplLib in nested interrupt handlers
Date: Fri, 9 Dec 2022 10:20:27 +0000 [thread overview]
Message-ID: <01020184f6668e77-e04c6ec0-66ec-4118-85a1-2da9c260bf95-000000@eu-west-1.amazonses.com> (raw)
In-Reply-To: <cover.1670328507.git.mcb30@ipxe.org>
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: Laszlo Ersek <lersek@redhat.com>
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>
---
OvmfPkg/8254TimerDxe/8254Timer.inf | 1 +
OvmfPkg/8254TimerDxe/Timer.c | 9 ++++++---
OvmfPkg/AmdSev/AmdSevX64.dsc | 1 +
OvmfPkg/CloudHv/CloudHvX64.dsc | 1 +
OvmfPkg/IntelTdx/IntelTdxX64.dsc | 1 +
OvmfPkg/LocalApicTimerDxe/LocalApicTimerDxe.c | 9 ++++++---
OvmfPkg/LocalApicTimerDxe/LocalApicTimerDxe.inf | 1 +
OvmfPkg/Microvm/MicrovmX64.dsc | 1 +
OvmfPkg/OvmfPkgIa32.dsc | 1 +
OvmfPkg/OvmfPkgIa32X64.dsc | 1 +
OvmfPkg/OvmfPkgX64.dsc | 1 +
OvmfPkg/OvmfXen.dsc | 1 +
12 files changed, 22 insertions(+), 6 deletions(-)
diff --git a/OvmfPkg/8254TimerDxe/8254Timer.inf b/OvmfPkg/8254TimerDxe/8254Timer.inf
index 8a07c8247e..8fbab896f0 100644
--- a/OvmfPkg/8254TimerDxe/8254Timer.inf
+++ b/OvmfPkg/8254TimerDxe/8254Timer.inf
@@ -24,6 +24,7 @@
UefiBootServicesTableLib
BaseLib
DebugLib
+ NestedInterruptTplLib
UefiDriverEntryPoint
IoLib
diff --git a/OvmfPkg/8254TimerDxe/Timer.c b/OvmfPkg/8254TimerDxe/Timer.c
index 7feaaaba2b..5382b01615 100644
--- a/OvmfPkg/8254TimerDxe/Timer.c
+++ b/OvmfPkg/8254TimerDxe/Timer.c
@@ -6,6 +6,8 @@ SPDX-License-Identifier: BSD-2-Clause-Patent
**/
+#include <Library/NestedInterruptTplLib.h>
+
#include "Timer.h"
//
@@ -76,9 +78,10 @@ TimerInterruptHandler (
IN EFI_SYSTEM_CONTEXT SystemContext
)
{
- EFI_TPL OriginalTPL;
+ STATIC NESTED_INTERRUPT_STATE NestedInterruptState;
+ EFI_TPL OriginalTPL;
- OriginalTPL = gBS->RaiseTPL (TPL_HIGH_LEVEL);
+ OriginalTPL = NestedInterruptRaiseTPL ();
mLegacy8259->EndOfInterrupt (mLegacy8259, Efi8259Irq0);
@@ -89,7 +92,7 @@ TimerInterruptHandler (
mTimerNotifyFunction (mTimerPeriod);
}
- gBS->RestoreTPL (OriginalTPL);
+ NestedInterruptRestoreTPL (OriginalTPL, SystemContext, &NestedInterruptState);
}
/**
diff --git a/OvmfPkg/AmdSev/AmdSevX64.dsc b/OvmfPkg/AmdSev/AmdSevX64.dsc
index 8f7cae787e..3433725697 100644
--- a/OvmfPkg/AmdSev/AmdSevX64.dsc
+++ b/OvmfPkg/AmdSev/AmdSevX64.dsc
@@ -353,6 +353,7 @@
!endif
PciLib|OvmfPkg/Library/DxePciLibI440FxQ35/DxePciLibI440FxQ35.inf
MpInitLib|UefiCpuPkg/Library/MpInitLib/DxeMpInitLib.inf
+ NestedInterruptTplLib|OvmfPkg/Library/NestedInterruptTplLib/NestedInterruptTplLib.inf
QemuFwCfgS3Lib|OvmfPkg/Library/QemuFwCfgS3Lib/DxeQemuFwCfgS3LibFwCfg.inf
QemuLoadImageLib|OvmfPkg/Library/GenericQemuLoadImageLib/GenericQemuLoadImageLib.inf
diff --git a/OvmfPkg/CloudHv/CloudHvX64.dsc b/OvmfPkg/CloudHv/CloudHvX64.dsc
index ce277cb239..6d5a702b05 100644
--- a/OvmfPkg/CloudHv/CloudHvX64.dsc
+++ b/OvmfPkg/CloudHv/CloudHvX64.dsc
@@ -404,6 +404,7 @@
!endif
PciLib|OvmfPkg/Library/DxePciLibI440FxQ35/DxePciLibI440FxQ35.inf
MpInitLib|UefiCpuPkg/Library/MpInitLib/DxeMpInitLib.inf
+ NestedInterruptTplLib|OvmfPkg/Library/NestedInterruptTplLib/NestedInterruptTplLib.inf
QemuFwCfgS3Lib|OvmfPkg/Library/QemuFwCfgS3Lib/DxeQemuFwCfgS3LibFwCfg.inf
QemuLoadImageLib|OvmfPkg/Library/X86QemuLoadImageLib/X86QemuLoadImageLib.inf
diff --git a/OvmfPkg/IntelTdx/IntelTdxX64.dsc b/OvmfPkg/IntelTdx/IntelTdxX64.dsc
index 3458926515..994d09c751 100644
--- a/OvmfPkg/IntelTdx/IntelTdxX64.dsc
+++ b/OvmfPkg/IntelTdx/IntelTdxX64.dsc
@@ -314,6 +314,7 @@
LockBoxLib|OvmfPkg/Library/LockBoxLib/LockBoxDxeLib.inf
PciLib|OvmfPkg/Library/DxePciLibI440FxQ35/DxePciLibI440FxQ35.inf
MpInitLib|UefiCpuPkg/Library/MpInitLib/DxeMpInitLib.inf
+ NestedInterruptTplLib|OvmfPkg/Library/NestedInterruptTplLib/NestedInterruptTplLib.inf
QemuFwCfgS3Lib|OvmfPkg/Library/QemuFwCfgS3Lib/DxeQemuFwCfgS3LibFwCfg.inf
QemuLoadImageLib|OvmfPkg/Library/X86QemuLoadImageLib/X86QemuLoadImageLib.inf
diff --git a/OvmfPkg/LocalApicTimerDxe/LocalApicTimerDxe.c b/OvmfPkg/LocalApicTimerDxe/LocalApicTimerDxe.c
index 3e04b49d6b..67f4dcde37 100644
--- a/OvmfPkg/LocalApicTimerDxe/LocalApicTimerDxe.c
+++ b/OvmfPkg/LocalApicTimerDxe/LocalApicTimerDxe.c
@@ -8,6 +8,8 @@ SPDX-License-Identifier: BSD-2-Clause-Patent
**/
+#include <Library/NestedInterruptTplLib.h>
+
#include "LocalApicTimerDxe.h"
//
@@ -58,9 +60,10 @@ TimerInterruptHandler (
IN EFI_SYSTEM_CONTEXT SystemContext
)
{
- EFI_TPL OriginalTPL;
+ STATIC NESTED_INTERRUPT_STATE NestedInterruptState;
+ EFI_TPL OriginalTPL;
- OriginalTPL = gBS->RaiseTPL (TPL_HIGH_LEVEL);
+ OriginalTPL = NestedInterruptRaiseTPL ();
SendApicEoi ();
@@ -71,7 +74,7 @@ TimerInterruptHandler (
mTimerNotifyFunction (mTimerPeriod);
}
- gBS->RestoreTPL (OriginalTPL);
+ NestedInterruptRestoreTPL (OriginalTPL, SystemContext, &NestedInterruptState);
}
/**
diff --git a/OvmfPkg/LocalApicTimerDxe/LocalApicTimerDxe.inf b/OvmfPkg/LocalApicTimerDxe/LocalApicTimerDxe.inf
index 3ad28a148c..b85965c75e 100644
--- a/OvmfPkg/LocalApicTimerDxe/LocalApicTimerDxe.inf
+++ b/OvmfPkg/LocalApicTimerDxe/LocalApicTimerDxe.inf
@@ -27,6 +27,7 @@
UefiBootServicesTableLib
BaseLib
DebugLib
+ NestedInterruptTplLib
UefiDriverEntryPoint
LocalApicLib
diff --git a/OvmfPkg/Microvm/MicrovmX64.dsc b/OvmfPkg/Microvm/MicrovmX64.dsc
index 994a02d301..db449384c9 100644
--- a/OvmfPkg/Microvm/MicrovmX64.dsc
+++ b/OvmfPkg/Microvm/MicrovmX64.dsc
@@ -403,6 +403,7 @@
PciPcdProducerLib|OvmfPkg/Fdt/FdtPciPcdProducerLib/FdtPciPcdProducerLib.inf
PciExpressLib|OvmfPkg/Library/BaseCachingPciExpressLib/BaseCachingPciExpressLib.inf
MpInitLib|UefiCpuPkg/Library/MpInitLib/DxeMpInitLib.inf
+ NestedInterruptTplLib|OvmfPkg/Library/NestedInterruptTplLib/NestedInterruptTplLib.inf
QemuFwCfgS3Lib|OvmfPkg/Library/QemuFwCfgS3Lib/DxeQemuFwCfgS3LibFwCfg.inf
QemuLoadImageLib|OvmfPkg/Library/X86QemuLoadImageLib/X86QemuLoadImageLib.inf
diff --git a/OvmfPkg/OvmfPkgIa32.dsc b/OvmfPkg/OvmfPkgIa32.dsc
index 6f774baf90..15ce1261ec 100644
--- a/OvmfPkg/OvmfPkgIa32.dsc
+++ b/OvmfPkg/OvmfPkgIa32.dsc
@@ -409,6 +409,7 @@
!endif
PciLib|OvmfPkg/Library/DxePciLibI440FxQ35/DxePciLibI440FxQ35.inf
MpInitLib|UefiCpuPkg/Library/MpInitLib/DxeMpInitLib.inf
+ NestedInterruptTplLib|OvmfPkg/Library/NestedInterruptTplLib/NestedInterruptTplLib.inf
QemuFwCfgS3Lib|OvmfPkg/Library/QemuFwCfgS3Lib/DxeQemuFwCfgS3LibFwCfg.inf
QemuLoadImageLib|OvmfPkg/Library/X86QemuLoadImageLib/X86QemuLoadImageLib.inf
diff --git a/OvmfPkg/OvmfPkgIa32X64.dsc b/OvmfPkg/OvmfPkgIa32X64.dsc
index c851764dec..da8d182b54 100644
--- a/OvmfPkg/OvmfPkgIa32X64.dsc
+++ b/OvmfPkg/OvmfPkgIa32X64.dsc
@@ -415,6 +415,7 @@
!endif
PciLib|OvmfPkg/Library/DxePciLibI440FxQ35/DxePciLibI440FxQ35.inf
MpInitLib|UefiCpuPkg/Library/MpInitLib/DxeMpInitLib.inf
+ NestedInterruptTplLib|OvmfPkg/Library/NestedInterruptTplLib/NestedInterruptTplLib.inf
QemuFwCfgS3Lib|OvmfPkg/Library/QemuFwCfgS3Lib/DxeQemuFwCfgS3LibFwCfg.inf
QemuLoadImageLib|OvmfPkg/Library/X86QemuLoadImageLib/X86QemuLoadImageLib.inf
diff --git a/OvmfPkg/OvmfPkgX64.dsc b/OvmfPkg/OvmfPkgX64.dsc
index 63c3a47aea..b2d24a798b 100644
--- a/OvmfPkg/OvmfPkgX64.dsc
+++ b/OvmfPkg/OvmfPkgX64.dsc
@@ -435,6 +435,7 @@
!endif
PciLib|OvmfPkg/Library/DxePciLibI440FxQ35/DxePciLibI440FxQ35.inf
MpInitLib|UefiCpuPkg/Library/MpInitLib/DxeMpInitLib.inf
+ NestedInterruptTplLib|OvmfPkg/Library/NestedInterruptTplLib/NestedInterruptTplLib.inf
QemuFwCfgS3Lib|OvmfPkg/Library/QemuFwCfgS3Lib/DxeQemuFwCfgS3LibFwCfg.inf
QemuLoadImageLib|OvmfPkg/Library/X86QemuLoadImageLib/X86QemuLoadImageLib.inf
diff --git a/OvmfPkg/OvmfXen.dsc b/OvmfPkg/OvmfXen.dsc
index 8bb497088b..c328987e84 100644
--- a/OvmfPkg/OvmfXen.dsc
+++ b/OvmfPkg/OvmfXen.dsc
@@ -340,6 +340,7 @@
!endif
PciLib|OvmfPkg/Library/DxePciLibI440FxQ35/DxePciLibI440FxQ35.inf
MpInitLib|UefiCpuPkg/Library/MpInitLib/DxeMpInitLib.inf
+ NestedInterruptTplLib|OvmfPkg/Library/NestedInterruptTplLib/NestedInterruptTplLib.inf
QemuFwCfgS3Lib|OvmfPkg/Library/QemuFwCfgS3Lib/DxeQemuFwCfgS3LibFwCfg.inf
[LibraryClasses.common.UEFI_APPLICATION]
--
2.38.1
prev parent reply other threads:[~2022-12-09 10:20 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <cover.1670328507.git.mcb30@ipxe.org>
2022-12-09 10:20 ` [PATCH 1/3] OvmfPkg: Send EOI before RestoreTPL() in timer interrupt handlers Michael Brown
2022-12-09 10:20 ` [PATCH 2/3] OvmfPkg: Add library to handle TPL from within nested " Michael Brown
2022-12-09 15:02 ` [edk2-devel] " Gerd Hoffmann
2022-12-09 15:22 ` Michael Brown
[not found] ` <ac60f07a-df27-bcfd-4129-0d6bfcf7ac77@ipxe.org>
2022-12-20 15:02 ` Michael Brown
2022-12-21 8:06 ` Laszlo Ersek
2022-12-23 14:25 ` Ard Biesheuvel
2022-12-09 10:20 ` Michael Brown [this message]
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