Commit a84fcd46 authored by Suzuki Poulose's avatar Suzuki Poulose Committed by Benjamin Herrenschmidt
Browse files

powerpc: Change memory_limit from phys_addr_t to unsigned long long 



There are some device-tree nodes, whose values are of type phys_addr_t.
The phys_addr_t is variable sized based on the CONFIG_PHSY_T_64BIT.

Change these to a fixed unsigned long long for consistency.

This patch does the change only for memory_limit.

The following is a list of such variables which need the change:

 1) kernel_end, crashk_size - in arch/powerpc/kernel/machine_kexec.c

 2) (struct resource *)crashk_res.start - We could export a local static
    variable from machine_kexec.c.

Changing the above values might break the kexec-tools. So, I will
fix kexec-tools first to handle the different sized values and then change
 the above.

Suggested-by: default avatarBenjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: default avatarSuzuki K. Poulose <suzuki@in.ibm.com>
Signed-off-by: default avatarBenjamin Herrenschmidt <benh@kernel.crashing.org>
parent 0090e02b

arch/powerpc/include/asm/setup.h

+1 −1
Original line number Diff line number Diff line
@@ -9,7 +9,7 @@ extern void ppc_printk_progress(char *s, unsigned short hex); 
extern unsigned int rtas_data;

extern int mem_init_done;	/* set on boot once kmalloc can be called */

extern int init_bootmem_done;	/* set once bootmem is available */

extern phys_addr_t memory_limit;

extern unsigned long long memory_limit;

extern unsigned long klimit;

extern void *zalloc_maybe_bootmem(size_t size, gfp_t mask);

arch/powerpc/kernel/fadump.c

+1 −2
Original line number Diff line number Diff line
@@ -289,8 +289,7 @@ int __init fadump_reserve_mem(void) 
		else

			memory_limit = memblock_end_of_DRAM();

		printk(KERN_INFO "Adjusted memory_limit for firmware-assisted"

				" dump, now %#016llx\n",

				(unsigned long long)memory_limit);

				" dump, now %#016llx\n", memory_limit);

	}

	if (memory_limit)

		memory_boundary = memory_limit;

arch/powerpc/kernel/machine_kexec.c

+1 −1
Original line number Diff line number Diff line
@@ -165,7 +165,7 @@ void __init reserve_crashkernel(void) 
	if (memory_limit && memory_limit <= crashk_res.end) {

		memory_limit = crashk_res.end + 1;

		printk("Adjusted memory limit for crashkernel, now 0x%llx\n",

		       (unsigned long long)memory_limit);

		       memory_limit);

	}



	printk(KERN_INFO "Reserving %ldMB of memory at %ldMB "

arch/powerpc/kernel/prom.c

+2 −2
Original line number Diff line number Diff line
@@ -78,7 +78,7 @@ static int __init early_parse_mem(char *p) 
		return 1;



	memory_limit = PAGE_ALIGN(memparse(p, &p));

	DBG("memory limit = 0x%llx\n", (unsigned long long)memory_limit);

	DBG("memory limit = 0x%llx\n", memory_limit);



	return 0;

}
@@ -661,7 +661,7 @@ void __init early_init_devtree(void *params) 


	/* make sure we've parsed cmdline for mem= before this */

	if (memory_limit)

		first_memblock_size = min(first_memblock_size, memory_limit);

		first_memblock_size = min_t(u64, first_memblock_size, memory_limit);

	setup_initial_memory_limit(memstart_addr, first_memblock_size);

	/* Reserve MEMBLOCK regions used by kernel, initrd, dt, etc... */

	memblock_reserve(PHYSICAL_START, __pa(klimit) - PHYSICAL_START);

arch/powerpc/mm/mem.c

+1 −1
Original line number Diff line number Diff line
@@ -62,7 +62,7 @@ 


int init_bootmem_done;

int mem_init_done;

phys_addr_t memory_limit;

unsigned long long memory_limit;



#ifdef CONFIG_HIGHMEM

pte_t *kmap_pte;

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