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Commit 49a84965 authored by Becky Bruce's avatar Becky Bruce Committed by Benjamin Herrenschmidt
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powerpc: Allow mem=x cmdline to work with 4G+ 



We're currently choking on mem=4g (and above) due to memory_limit
being specified as an unsigned long. Make memory_limit
phys_addr_t to fix this.

Signed-off-by: default avatarBecky Bruce <beckyb@kernel.crashing.org>
Signed-off-by: default avatarBenjamin Herrenschmidt <benh@kernel.crashing.org>
parent 31207dab

arch/powerpc/include/asm/system.h

+1 −1
Original line number Diff line number Diff line
@@ -212,7 +212,7 @@ extern struct task_struct *_switch(struct thread_struct *prev, 
extern unsigned int rtas_data;

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

extern int init_bootmem_done;	/* set on !NUMA once bootmem is available */

extern unsigned long memory_limit;

extern phys_addr_t memory_limit;

extern unsigned long klimit;



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

arch/powerpc/kernel/machine_kexec.c

+2 −2
Original line number Diff line number Diff line
@@ -125,8 +125,8 @@ void __init reserve_crashkernel(void) 
	/* Crash kernel trumps memory limit */

	if (memory_limit && memory_limit <= crashk_res.end) {

		memory_limit = crashk_res.end + 1;

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

				memory_limit);

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

		       (unsigned long long)memory_limit);

	}



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

arch/powerpc/kernel/prom.c

+4 −4
Original line number Diff line number Diff line
@@ -426,7 +426,7 @@ static int __init early_parse_mem(char *p) 
		return 1;



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

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

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



	return 0;

}
@@ -1160,7 +1160,7 @@ static inline void __init phyp_dump_reserve_mem(void) {} 


void __init early_init_devtree(void *params)

{

	unsigned long limit;

	phys_addr_t limit;



	DBG(" -> early_init_devtree(%p)\n", params);
@@ -1204,7 +1204,7 @@ void __init early_init_devtree(void *params) 


	limit = memory_limit;

	if (! limit) {

		unsigned long memsize;

		phys_addr_t memsize;



		/* Ensure that total memory size is page-aligned, because

		 * otherwise mark_bootmem() gets upset. */
@@ -1218,7 +1218,7 @@ void __init early_init_devtree(void *params) 
	lmb_analyze();

	lmb_dump_all();



	DBG("Phys. mem: %lx\n", lmb_phys_mem_size());

	DBG("Phys. mem: %llx\n", lmb_phys_mem_size());



	/* We may need to relocate the flat tree, do it now.

	 * FIXME .. and the initrd too? */

arch/powerpc/mm/mem.c

+1 −1
Original line number Diff line number Diff line
@@ -57,7 +57,7 @@ 


int init_bootmem_done;

int mem_init_done;

unsigned long memory_limit;

phys_addr_t memory_limit;



#ifdef CONFIG_HIGHMEM

pte_t *kmap_pte;