[PATCH 4/8] arm64: Add EL2 switch to soft_restart

[Catalin Marinas]

On Sat, Jan 17, 2015 at 12:23:34AM +0000, Geoff Levand wrote:
>  ENTRY(cpu_reset)
> -	mrs	x1, sctlr_el1
> -	bic	x1, x1, #1
> -	msr	sctlr_el1, x1			// disable the MMU
> +	mrs	x2, sctlr_el1
> +	bic	x2, x2, #1
> +	msr	sctlr_el1, x2			// disable the MMU
>  	isb
> -	ret	x0
> +
> +	cbz	x0, 1f				// el2_switch?
> +	mov	x0, x1
> +	mov	x1, xzr
> +	mov	x2, xzr
> +	mov	x3, xzr
> +	hvc	#HVC_CALL_FUNC			// no return

If that's the only user of HVC_CALL_FUNC, why do we bother with
arguments, calling convention?

-- 
Catalin