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| author | Nadav Amit <namit@vmware.com> | 2020-06-26 02:23:32 -0700 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2020-06-26 06:42:05 -0400 |
| commit | 3b9b2d554aeed680ac44daaf13c04a6cdb19c6a8 (patch) | |
| tree | 4fcce0cff78d6c577df5f505391becf53614137a | |
| parent | a529af7c46ad7705663b281b07c6e80a290b0e55 (diff) | |
| download | kvm-unit-tests-3b9b2d554aeed680ac44daaf13c04a6cdb19c6a8.tar.gz | |
x86: realmode: hlt loop as fallback on exit
For systems without emulated devices (e.g., bare-metal), use halt-loop
when exiting the realmode test.
Signed-off-by: Nadav Amit <namit@vmware.com>
Message-Id: <20200626092333.2830-3-namit@vmware.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
| -rw-r--r-- | x86/realmode.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/x86/realmode.c b/x86/realmode.c index ef79f7e..301b013 100644 --- a/x86/realmode.c +++ b/x86/realmode.c @@ -115,6 +115,10 @@ static int failed; static void exit(int code) { outb(code, 0xf4); + + while (1) { + asm volatile("hlt" ::: "memory"); + } } struct regs { |