From 32cf7a1e79db11b3ae87d0fa1b4cc8884d709263 Mon Sep 17 00:00:00 2001
From: Shaowei Song <songshaowei.ssw@antgroup.com>
Date: Tue, 5 Nov 2024 12:11:31 +0000
Subject: [PATCH] Fix the IOMMU enabling issue in the default EFI boot mode

---
 tools/qemu_args.sh | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/tools/qemu_args.sh b/tools/qemu_args.sh
index 3edc3471d..e7595384b 100755
--- a/tools/qemu_args.sh
+++ b/tools/qemu_args.sh
@@ -58,11 +58,16 @@ COMMON_QEMU_ARGS="\
 "
 
 if [ "$1" = "iommu" ]; then
+    if [ "$OVMF" = "off" ]; then
+        echo "Warning: OVMF is off, enabling it for IOMMU support." 1>&2
+        OVMF="on"
+    fi
     IOMMU_DEV_EXTRA=",iommu_platform=on,ats=on"
     IOMMU_EXTRA_ARGS="\
         -device intel-iommu,intremap=on,device-iotlb=on \
-        -device ioh3420,id=pcie.0,chassis=1\
+        -device ioh3420,id=pcie.0,chassis=1 \
     "
+    # TODO: Add support for enabling IOMMU on AMD platforms
 fi
 
 QEMU_ARGS="\