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-rw-r--r--arch/arm64/kvm/hyp.S13
1 files changed, 10 insertions, 3 deletions
diff --git a/arch/arm64/kvm/hyp.S b/arch/arm64/kvm/hyp.S
index 0ccdcbbef..48f19a37b 100644
--- a/arch/arm64/kvm/hyp.S
+++ b/arch/arm64/kvm/hyp.S
@@ -17,10 +17,12 @@
#include <linux/linkage.h>
+#include <asm/alternative.h>
#include <asm/assembler.h>
+#include <asm/cpufeature.h>
/*
- * u64 kvm_call_hyp(void *hypfn, ...);
+ * u64 __kvm_call_hyp(void *hypfn, ...);
*
* This is not really a variadic function in the classic C-way and care must
* be taken when calling this to ensure parameters are passed in registers
@@ -37,7 +39,12 @@
* used to implement __hyp_get_vectors in the same way as in
* arch/arm64/kernel/hyp_stub.S.
*/
-ENTRY(kvm_call_hyp)
+ENTRY(__kvm_call_hyp)
+alternative_if_not ARM64_HAS_VIRT_HOST_EXTN
hvc #0
ret
-ENDPROC(kvm_call_hyp)
+alternative_else
+ b __vhe_hyp_call
+ nop
+alternative_endif
+ENDPROC(__kvm_call_hyp)