edk2/0026-OvmfPkg-QemuKernelLoaderFsDxe-suppress-error-on-no-k.patch

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From 29be717a1ae0a2617a7ae95698940286201d1612 Mon Sep 17 00:00:00 2001
From: Laszlo Ersek <lersek@redhat.com>
Date: Wed, 24 Jun 2020 11:31:36 +0200
Subject: OvmfPkg/QemuKernelLoaderFsDxe: suppress error on no "-kernel" in
silent aa64 build (RH)
Notes about the RHEL-8.3/20200603-ca407c7246bf [edk2-stable202005] ->
RHEL-8.5/20210520-e1999b264f1f [edk2-stable202105] rebase:
- Remove obsolete commit message tags related to downstream patch
management: Message-id, Patchwork-id, O-Subject, Acked-by, From,
RH-Acked-by, RH-Author (RHBZ#1846481).
Bugzilla: 1844682
If the "-kernel" QEMU option is not used, then QemuKernelLoaderFsDxe
should return EFI_NOT_FOUND, so that the DXE Core can unload it. However,
the associated error message, logged by the DXE Core to the serial
console, is not desired in the silent edk2-aarch64 build, given that the
absence of "-kernel" is nothing out of the ordinary. Therefore, return
success and stay resident. The wasted guest RAM still gets freed after
ExitBootServices().
(Inspired by RHEL-8.1.0 commit aaaedc1e2cfd.)
Signed-off-by: Laszlo Ersek <lersek@redhat.com>
Signed-off-by: Miroslav Rezanina <mrezanin@redhat.com>
(cherry picked from commit 9adcdf493ebbd11efb74e2905ab5f6c8996e096d)
---
.../QemuKernelLoaderFsDxe.c | 17 +++++++++++++++++
.../QemuKernelLoaderFsDxe.inf | 1 +
2 files changed, 18 insertions(+)
diff --git a/OvmfPkg/QemuKernelLoaderFsDxe/QemuKernelLoaderFsDxe.c b/OvmfPkg/QemuKernelLoaderFsDxe/QemuKernelLoaderFsDxe.c
index b09ff6a359..ec0244d61b 100644
--- a/OvmfPkg/QemuKernelLoaderFsDxe/QemuKernelLoaderFsDxe.c
+++ b/OvmfPkg/QemuKernelLoaderFsDxe/QemuKernelLoaderFsDxe.c
@@ -18,6 +18,7 @@
#include <Library/BaseLib.h>
#include <Library/BaseMemoryLib.h>
#include <Library/DebugLib.h>
+#include <Library/DebugPrintErrorLevelLib.h>
#include <Library/DevicePathLib.h>
#include <Library/MemoryAllocationLib.h>
#include <Library/QemuFwCfgLib.h>
@@ -1039,6 +1040,22 @@ QemuKernelLoaderFsDxeEntrypoint (
if (KernelBlob->Data == NULL) {
Status = EFI_NOT_FOUND;
+#if defined (MDE_CPU_AARCH64)
+ //
+ // RHBZ#1844682
+ //
+ // If the "-kernel" QEMU option is not being used, this platform DXE driver
+ // should return EFI_NOT_FOUND, so that the DXE Core can unload it.
+ // However, the associated error message, logged by the DXE Core to the
+ // serial console, is not desired in the silent edk2-aarch64 build, given
+ // that the absence of "-kernel" is nothing out of the ordinary. Therefore,
+ // return success and stay resident. The wasted guest RAM still gets freed
+ // after ExitBootServices().
+ //
+ if (GetDebugPrintErrorLevel () == DEBUG_ERROR) {
+ Status = EFI_SUCCESS;
+ }
+#endif
goto FreeBlobs;
}
diff --git a/OvmfPkg/QemuKernelLoaderFsDxe/QemuKernelLoaderFsDxe.inf b/OvmfPkg/QemuKernelLoaderFsDxe/QemuKernelLoaderFsDxe.inf
index 7b35adb8e0..e0331c6e2c 100644
--- a/OvmfPkg/QemuKernelLoaderFsDxe/QemuKernelLoaderFsDxe.inf
+++ b/OvmfPkg/QemuKernelLoaderFsDxe/QemuKernelLoaderFsDxe.inf
@@ -28,6 +28,7 @@
BaseLib
BaseMemoryLib
DebugLib
+ DebugPrintErrorLevelLib
DevicePathLib
MemoryAllocationLib
QemuFwCfgLib
--
2.27.0