[PATCH v5 17/17] powerpc/32s: Enable CONFIG_VMAP_STACK

[Michael Ellerman]

Christophe Leroy <christophe.leroy at c-s.fr> writes:
> diff --git a/arch/powerpc/kernel/head_32.S b/arch/powerpc/kernel/head_32.S
> index 90ef355e958b..3be041166db4 100644
> --- a/arch/powerpc/kernel/head_32.S
> +++ b/arch/powerpc/kernel/head_32.S
> @@ -272,14 +272,20 @@ __secondary_hold_acknowledge:
>   */
>  	. = 0x200
>  	DO_KVM  0x200
> +MachineCheck:
>  	EXCEPTION_PROLOG_0
> +#ifdef CONFIG_VMAP_STACK
> +	li	r11, MSR_KERNEL & ~(MSR_IR | MSR_RI) /* can take DTLB miss */
> +	mtmsr	r11
> +#endif
>  #ifdef CONFIG_PPC_CHRP
>  	mfspr	r11, SPRN_SPRG_THREAD
> +	tovirt_vmstack(r11, r11)

This didn't build:

    arch/powerpc/kernel/head_32.S:283: Error: syntax error; found `r', expected `,'
    arch/powerpc/kernel/head_32.S:283: Error: found 'r', expected: ')'
    arch/powerpc/kernel/head_32.S:283: Error: bad expression
    arch/powerpc/kernel/head_32.S:283: Error: junk at end of line: `r11,%r11),0xc0000000 at h'


I fixed it by dropping the brackets.

cheers