Re: [PATCH] IntelSiliconPkg/VTdDxe: Change EBS Event TPL to CALLBACK.

["Zeng, Star" <star.zeng@intel.com>]

Some device driver may also have exit boot service event at CALLBACK, for example AtaPassThruExitBootServices() that was added by Laszlo.


Thanks,
Star
-----Original Message-----
From: Yao, Jiewen 
Sent: Thursday, October 26, 2017 10:14 AM
To: edk2-devel@lists.01.org
Cc: Zeng, Star <star.zeng@intel.com>
Subject: [PATCH] IntelSiliconPkg/VTdDxe: Change EBS Event TPL to CALLBACK.

Change ExitBootServices TPL to CALLBACK, so that a device can disable BME before IOMMU grants access right.

Cc: Star Zeng <star.zeng@intel.com>
Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Jiewen Yao <jiewen.yao@intel.com>
---
 IntelSiliconPkg/Feature/VTd/IntelVTdDxe/DmaProtection.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/IntelSiliconPkg/Feature/VTd/IntelVTdDxe/DmaProtection.c b/IntelSiliconPkg/Feature/VTd/IntelVTdDxe/DmaProtection.c
index f5de01f..4a4d82e 100644
--- a/IntelSiliconPkg/Feature/VTd/IntelVTdDxe/DmaProtection.c
+++ b/IntelSiliconPkg/Feature/VTd/IntelVTdDxe/DmaProtection.c
@@ -483,7 +483,7 @@ InitializeDmaProtection (
 
   Status = gBS->CreateEventEx (
                   EVT_NOTIFY_SIGNAL,
-                  TPL_NOTIFY,
+                  TPL_CALLBACK,
                   OnExitBootServices,
                   NULL,
                   &gEfiEventExitBootServicesGuid, @@ -492,7 +492,7 @@ InitializeDmaProtection (
   ASSERT_EFI_ERROR (Status);
 
   Status = EfiCreateEventLegacyBootEx (
-             TPL_NOTIFY,
+             TPL_CALLBACK,
              OnLegacyBoot,
              NULL,
              &LegacyBootEvent
--
2.7.4.windows.1