[v3 1/5] arm64: kvm: add a cpu tear-down function

Mark Rutland mark.rutland at arm.com
Wed Apr 8 06:02:21 PDT 2015


> +	/* We're now in idmap, disable MMU */
> +1:	mrs	x0, sctlr_el2
> +	and	x1, x0, #SCTLR_EL2_EE
> +	orr	x0, x0, x1		// preserve endianness of EL2
> +	ldr	x1, =SCTLR_EL2_FLAGS
> +	eor	x1, x1, xzr
> +	bic	x0, x0, x1		// Clear SCTL_M and etc
> +	msr	sctlr_el2, x0
> +	isb

This can instead be:

1:	mrs	x0, sctlr_el2
	ldr	x1, =SCTLR_EL2_FLAGS
	bic	x0, x0, x1
	msr	sctlr_el2, x0
	isb

As SCTLR_EL2_FLAGS doesn't contain the EE bit.

Mark.



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