Re: [PATCH v41 19/24] x86/vdso: Implement a vDSO for Intel SGX enclave call

From: Borislav Petkov
Date: Tue Nov 17 2020 - 08:14:37 EST


On Fri, Nov 13, 2020 at 12:01:30AM +0200, Jarkko Sakkinen wrote:
> diff --git a/arch/x86/entry/vdso/Makefile b/arch/x86/entry/vdso/Makefile
> index 2ad757fb3c23..9915fbd34264 100644
> --- a/arch/x86/entry/vdso/Makefile
> +++ b/arch/x86/entry/vdso/Makefile
> @@ -27,6 +27,7 @@ VDSO32-$(CONFIG_IA32_EMULATION) := y
> vobjs-y := vdso-note.o vclock_gettime.o vgetcpu.o
> vobjs32-y := vdso32/note.o vdso32/system_call.o vdso32/sigreturn.o
> vobjs32-y += vdso32/vclock_gettime.o
> +vobjs-$(VDSO64-y) += vsgx.o

Why?

This needs to be CONFIG_X86_SGX as you need this vdso functionality only
when SGX is enabled.

--
Regards/Gruss,
Boris.

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