From cc87bf46c13560dc106ce334f21957b8d951ab8c Mon Sep 17 00:00:00 2001
From: Gunnar Beutner <gunnar@beutner.name>
Date: Sat, 10 Jul 2021 14:12:40 +0200
Subject: [PATCH] Documentation+Meta: Automatically set vmx=off on Windows

---
 Documentation/BuildInstructionsWindows.md | 3 ---
 Meta/run.sh                               | 7 +++++++
 2 files changed, 7 insertions(+), 3 deletions(-)

diff --git a/Documentation/BuildInstructionsWindows.md b/Documentation/BuildInstructionsWindows.md
index 38225a9ea8..812ff9f73d 100644
--- a/Documentation/BuildInstructionsWindows.md
+++ b/Documentation/BuildInstructionsWindows.md
@@ -51,9 +51,6 @@ To run SerenityOS in a WHPX-enabled QEMU VM:
 - Specify QEMU acceleration option: \
 `export SERENITY_VIRT_TECH_ARG="-accel whpx,kernel-irqchip=off"`
 
-- Disable Virtual Machine eXtensions on the vCPU, otherwise some versions of QEMU will crash out with a "WHPX: Unexpected VP exit code 4" error: \
-`export SERENITY_QEMU_CPU="max,vmx=off"`
-
 - Start the VM with `Meta/serenity.sh run` as usual.
 
 ### Known issues with WHPX
diff --git a/Meta/run.sh b/Meta/run.sh
index 371b707498..3f1696eea9 100755
--- a/Meta/run.sh
+++ b/Meta/run.sh
@@ -49,6 +49,13 @@ fi
 
 [ -z "$SERENITY_RAM_SIZE" ] && SERENITY_RAM_SIZE=512M
 
+if command -v wslpath >/dev/null; then
+    case "$SERENITY_QEMU_BIN" in
+        /mnt/c/*)
+            [ -z "$SERENITY_QEMU_CPU" ] && SERENITY_QEMU_CPU="max,vmx=off"
+    esac
+fi
+
 [ -z "$SERENITY_QEMU_CPU" ] && SERENITY_QEMU_CPU="max"
 
 [ -z "$SERENITY_DISK_IMAGE" ] && {