The file arch/arm/mm/proc-v7-3level.S is only used by the #include directive in arch/arm/mm/proc-v7.S:23. This #include is conditional and depends on CONFIG_ARM_LPAE (otherwise proc-v7-2level.S is used). CONFIG_ARM_LPAE has a dependency on CONFIG_MMU defined in Kconfig. Consequently, checks for CONFIG_MMU in proc-v7-3level.S are superfluous.
Signed-off-by: Jonas Rabenstein <jonas.rabenst...@studium.uni-erlangen.de> --- I detected the issue with chimaera, a tool I currently develop for my bachelor thesis extending the undertaker tool suite (https://undertaker.cs.fau.de). arch/arm/mm/proc-v7-3level.S | 4 ---- 1 file changed, 4 deletions(-) diff --git a/arch/arm/mm/proc-v7-3level.S b/arch/arm/mm/proc-v7-3level.S index 5e5720e..6903f34 100644 --- a/arch/arm/mm/proc-v7-3level.S +++ b/arch/arm/mm/proc-v7-3level.S @@ -55,13 +55,11 @@ * the new TTB). */ ENTRY(cpu_v7_switch_mm) -#ifdef CONFIG_MMU mmid r2, r2 asid r2, r2 orr rpgdh, rpgdh, r2, lsl #(48 - 32) @ upper 32-bits of pgd mcrr p15, 0, rpgdl, rpgdh, c2 @ set TTB 0 isb -#endif ret lr ENDPROC(cpu_v7_switch_mm) @@ -81,7 +79,6 @@ ENDPROC(cpu_v7_switch_mm) * - pte - PTE value to store (64-bit in r2 and r3) */ ENTRY(cpu_v7_set_pte_ext) -#ifdef CONFIG_MMU tst rl, #L_PTE_VALID beq 1f tst rh, #1 << (57 - 32) @ L_PTE_NONE @@ -97,7 +94,6 @@ ENTRY(cpu_v7_set_pte_ext) 1: strd r2, r3, [r0] ALT_SMP(W(nop)) ALT_UP (mcr p15, 0, r0, c7, c10, 1) @ flush_pte -#endif ret lr ENDPROC(cpu_v7_set_pte_ext) -- 2.7.3
