[PATCH 1/1] OvmfPkg/NestedInterruptTplLib: replace ASSERT() with a warning logged.

["Gerd Hoffmann" <kraxel@redhat.com>]

OVMF can't guarantee that the ASSERT() doesn't happen.  Misbehaving
EFI applications can trigger this.  So log a warning instead and try
to continue.

Reproducer: Fetch windows 11 22H2 iso image, boot it in qemu with OVMF.

Traced to BootServices->Stall() being called with IPL=TPL_HIGH_LEVEL
and Interrupts /enabled/ while windows is booting.

Cc: Michael Brown <mcb30@ipxe.org>
Cc: Laszlo Ersek <lersek@redhat.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
---
 OvmfPkg/Library/NestedInterruptTplLib/Tpl.c | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/OvmfPkg/Library/NestedInterruptTplLib/Tpl.c b/OvmfPkg/Library/NestedInterruptTplLib/Tpl.c
index e19d98878eb7..cd65a5c995a0 100644
--- a/OvmfPkg/Library/NestedInterruptTplLib/Tpl.c
+++ b/OvmfPkg/Library/NestedInterruptTplLib/Tpl.c
@@ -39,7 +39,15 @@ NestedInterruptRaiseTPL (
   //
   ASSERT (GetInterruptState () == FALSE);
   InterruptedTPL = gBS->RaiseTPL (TPL_HIGH_LEVEL);
-  ASSERT (InterruptedTPL < TPL_HIGH_LEVEL);
+  if (InterruptedTPL >= TPL_HIGH_LEVEL) {
+    DEBUG ((
+      DEBUG_WARN,
+      "%a: Called at IPL %d, trying to fixup and continue...\n",
+      __func__,
+      InterruptedTPL
+      ));
+    InterruptedTPL = TPL_HIGH_LEVEL - 1;
+  }
 
   return InterruptedTPL;
 }
-- 
2.40.0