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    SubjectRe: [PATCH v41 19/24] x86/vdso: Implement a vDSO for Intel SGX enclave call
    On Tue, Nov 17, 2020 at 02:14:02PM +0100, Borislav Petkov wrote:
    > 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.

    Agreed.

    > --
    > Regards/Gruss,
    > Boris.
    >
    > https://people.kernel.org/tglx/notes-about-netiquette

    /Jarkko

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