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Commit 40fd3533 authored by David S. Miller's avatar David S. Miller
Browse files

[SPARC64]: Kill readjust_prom_translations() 



Testing shows that the prom_unmap() calls do absolutely
nothing.

Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 2bdb3cb2

arch/sparc64/mm/init.c

+0 −35
Original line number Diff line number Diff line
@@ -619,39 +619,6 @@ static void remap_kernel(void) 
	}

}



static void readjust_prom_translations(void)

{

	int nents, i;



	nents = read_obp_translations();

	for (i = 0; i < nents; i++) {

		unsigned long vaddr = prom_trans[i].virt;

		unsigned long size = prom_trans[i].size;



		if (vaddr < 0xf0000000UL) {

			unsigned long avoid_start = (unsigned long) KERNBASE;

			unsigned long avoid_end = avoid_start + (4 * 1024 * 1024);



			if (bigkernel)

				avoid_end += (4 * 1024 * 1024);

			if (vaddr < avoid_start) {

				unsigned long top = vaddr + size;



				if (top > avoid_start)

					top = avoid_start;

				prom_unmap(top - vaddr, vaddr);

			}

			if ((vaddr + size) > avoid_end) {

				unsigned long bottom = vaddr;



				if (bottom < avoid_end)

					bottom = avoid_end;

				prom_unmap((vaddr + size) - bottom, bottom);

			}

		}

	}

}



static void inherit_prom_mappings(void)

{

	int n;
@@ -663,8 +630,6 @@ static void inherit_prom_mappings(void) 
	prom_printf("Remapping the kernel... ");

	remap_kernel();



	readjust_prom_translations();



	prom_printf("done.\n");



	register_prom_callbacks();