[PATCH v12 09/12] arm64: disable SCS for hypervisor code

[Sami Tolvanen]

Disable SCS for code that runs at a different exception level by
adding __noscs to __hyp_text.

Suggested-by: James Morse <james.morse@xxxxxxx>
Signed-off-by: Sami Tolvanen <samitolvanen@xxxxxxxxxx>
Reviewed-by: Kees Cook <keescook@xxxxxxxxxxxx>
Acked-by: Marc Zyngier <maz@xxxxxxxxxx>
---
 arch/arm64/include/asm/kvm_hyp.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/arm64/include/asm/kvm_hyp.h b/arch/arm64/include/asm/kvm_hyp.h
index fe57f60f06a8..875b106c5d98 100644
--- a/arch/arm64/include/asm/kvm_hyp.h
+++ b/arch/arm64/include/asm/kvm_hyp.h
@@ -13,7 +13,7 @@
 #include <asm/kvm_mmu.h>
 #include <asm/sysreg.h>
 
-#define __hyp_text __section(.hyp.text) notrace
+#define __hyp_text __section(.hyp.text) notrace __noscs
 
 #define read_sysreg_elx(r,nvh,vh)					\
 	({								\
-- 
2.26.1.301.g55bc3eb7cb9-goog