Enable QEMU debug exit

hermit-os · Mar 14, 2022 · 30e6a07 · 30e6a07
1 parent 38218c8
commit 30e6a07
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Showing 2 changed files with 13 additions and 3 deletions.
diff --git a/.github/workflows/x86_64.yml b/.github/workflows/x86_64.yml
@@ -83,5 +83,10 @@ jobs:
           Invoke-Expression "$LLVM_OBJCOPY --strip-debug -O elf32-i386 target/x86_64-unknown-hermit-loader/debug/rusty-loader"
       if: ${{ matrix.os == 'windows-latest' }}
     - name: Test loader
-      run:
-        qemu-system-x86_64 -display none -smp 1 -m 64M -serial stdio -kernel target/x86_64-unknown-hermit-loader/debug/rusty-loader -initrd data/x86_64/hello_world -cpu qemu64,apic,fsgsbase,rdtscp,xsave,xsaveopt,fxsr,rdrand
+      run: |
+        qemu-system-x86_64 -smp 1 \
+          -cpu qemu64,apic,fsgsbase,rdtscp,xsave,xsaveopt,fxsr,rdrand \
+          -device isa-debug-exit,iobase=0xf4,iosize=0x04 \
+          -display none -m 64M -serial stdio \
+          -kernel target/x86_64-unknown-hermit-loader/debug/rusty-loader \
+          -initrd data/x86_64/hello_world
diff --git a/README.md b/README.md
@@ -20,7 +20,12 @@ Afterwards, the loader is stored in `target/x86_64-unknown-hermit-loader/debug/`
 As final step the unikernel application `app` can be booted with following command:
 
 ```bash
-$ qemu-system-x86_64 -display none -smp 1 -m 64M -serial stdio -kernel path_to_loader/rusty-loader -initrd path_to_app/app -cpu qemu64,apic,fsgsbase,rdtscp,xsave,xsaveopt,fxsr
+qemu-system-x86_64 -smp 1 \
+    -cpu qemu64,apic,fsgsbase,rdtscp,xsave,xsaveopt,fxsr \
+    -device isa-debug-exit,iobase=0xf4,iosize=0x04 \
+    -display none -m 64M -serial stdio -enable-kvm \
+    -kernel path_to_loader/rusty-loader \
+    -initrd path_to_app/app
 ```
 
 It is important to enable the processor features _fsgsbase_ and _rdtscp_ because it is a prerequisite to boot RustyHermit.