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Commit 0d0109a4 authored by Catalin Marinas's avatar Catalin Marinas
Browse files

arm64: Do not set the SMP/nAMP processor bit 



If such bit exists on a given CPU, it must be set by the firmware or
boot-loader prior to starting the kernel (see
Documentation/arm64/booting.txt).

Signed-off-by: default avatarCatalin Marinas <catalin.marinas@arm.com>
parent 38074229

arch/arm64/mm/proc.S

+0 −11
Original line number Original line Diff line number Diff line
@@ -108,17 +108,6 @@ cpu_name: 
 *	value of the SCTLR_EL1 register.

 *	value of the SCTLR_EL1 register.

 */

 */

ENTRY(__cpu_setup)

ENTRY(__cpu_setup)

#ifdef CONFIG_SMP

	/* TODO: only do this for certain CPUs */

	/*

	 * Enable SMP/nAMP mode.

	 */

	mrs	x0, actlr_el1

	tbnz	x0, #6, 1f			// already enabled?

	orr	x0, x0, #1 << 6

	msr	actlr_el1, x0

1:

#endif

	/*

	/*

	 * Preserve the link register across the function call.

	 * Preserve the link register across the function call.

	 */

	 */