In some cases, shutdown through the test device and Bochs might fail.
Just hang in a loop that executes halt in such cases. Remove the
__builtin_unreachable() as it is not needed anymore.
Signed-off-by: Nadav Amit <nadav.amit@xxxxxxxxx>
---
lib/x86/io.c | 6 +++++-
1 file changed, 5 insertions(+), 1 deletion(-)
diff --git a/lib/x86/io.c b/lib/x86/io.c
index f3e01f7..f4ffb44 100644
--- a/lib/x86/io.c
+++ b/lib/x86/io.c
@@ -99,7 +99,11 @@ void exit(int code)
#else
asm volatile("out %0, %1" : : "a"(code), "d"((short)0xf4));
#endif
- __builtin_unreachable();
+
+ /* Fallback */
+ while (1) {
+ asm volatile("hlt" ::: "memory");
+ }
}
void __iomem *ioremap(phys_addr_t phys_addr, size_t size)
--
2.17.1
