Commit a623bb58 authored by Christophe Leroy's avatar Christophe Leroy Committed by Michael Ellerman
Browse files

powerpc/8xx: Map IMMR with a huge page 



Map the IMMR area with a single 512k huge page.

Signed-off-by: default avatarChristophe Leroy <christophe.leroy@csgroup.eu>
Signed-off-by: default avatarMichael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/9495dba06669da40e133f24607758fa6dcc65f66.1589866984.git.christophe.leroy@csgroup.eu
parent 34536d78

arch/powerpc/mm/nohash/8xx.c

+2 −6
Original line number Diff line number Diff line
@@ -118,17 +118,13 @@ static bool immr_is_mapped __initdata; 


void __init mmu_mapin_immr(void)

{

	unsigned long p = PHYS_IMMR_BASE;

	unsigned long v = VIRT_IMMR_BASE;

	int offset;



	if (immr_is_mapped)

		return;



	immr_is_mapped = true;



	for (offset = 0; offset < IMMR_SIZE; offset += PAGE_SIZE)

		map_kernel_page(v + offset, p + offset, PAGE_KERNEL_NCG);

	__early_map_kernel_hugepage(VIRT_IMMR_BASE, PHYS_IMMR_BASE,

				    PAGE_KERNEL_NCG, MMU_PAGE_512K, true);

}



unsigned long __init mmu_mapin_ram(unsigned long base, unsigned long top)