Re: [PATCH v8 09/12] arm64: disable SCS for hypervisor code
From: Kees Cook <hidden>
Date: 2020-02-19 00:58:56
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On Tue, Feb 18, 2020 at 04:08:14PM -0800, Sami Tolvanen wrote:
Disable SCS for code that runs at a different exception level by adding __noscs to __hyp_text. Suggested-by: James Morse <james.morse@arm.com> Signed-off-by: Sami Tolvanen <samitolvanen@google.com>
Reviewed-by: Kees Cook <redacted> -Kees
quoted hunk ↗ jump to hunk
--- 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 a3a6a2ba9a63..0f0603f55ea0 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) \ ({ \-- 2.25.0.265.gbab2e86ba0-goog
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