Messages in this thread | | | Date | Tue, 18 Feb 2020 16:58:25 -0800 | From | Kees Cook <> | Subject | Re: [PATCH v8 09/12] arm64: disable SCS for hypervisor code |
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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 <keescook@chromium.org>
-Kees
> --- > 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 >
-- Kees Cook
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