Subject: [PATCH v13 09/12] arm64: disable SCS for hypervisor code

From: Sami Tolvanen <[email-masked]>
Date: Mon, 27 Apr 2020 09:00:15 -0700

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

Suggested-by: James Morse <[email-masked]>
Signed-off-by: Sami Tolvanen <[email-masked]>
Reviewed-by: Kees Cook <[email-masked]>
Acked-by: Marc Zyngier <[email-masked]>
---
 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)					\
 	({								\
-- 
2.26.2.303.gf8c07b1a785-goog

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