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Commit e5a1c749 authored by Zhen Kong's avatar Zhen Kong
Browse files

shmbridge: make memory allocation to be page aligned 



Make memory allocation to be page aligned from bridge pool as some
clients need to send page aligned buffer to trustzone.

Change-Id: Ia69d31b66683e1156f34aa621fe10c206101423d
Signed-off-by: default avatarZhen Kong <zkong@codeaurora.org>
parent 6b3ddc57

drivers/soc/qcom/qtee_shmbridge.c

+5 −4
Original line number Diff line number Diff line
@@ -343,15 +343,16 @@ static int __init qtee_shmbridge_init(void) 
		return 0;

	}



	/* allocate a contiguous buffer */

	/* allocate a contiguous page aligned buffer */

	default_bridge.size = DEFAULT_BRIDGE_SIZE;

	default_bridge.vaddr = kzalloc(default_bridge.size, GFP_KERNEL);

	default_bridge.vaddr = (void *)__get_free_pages(GFP_KERNEL|__GFP_COMP,

				get_order(default_bridge.size));

	if (!default_bridge.vaddr)

		return -ENOMEM;

	default_bridge.paddr = virt_to_phys(default_bridge.vaddr);



	/* create a general mem pool */

	default_bridge.min_alloc_order = 3; /* 8 byte aligned */

	default_bridge.min_alloc_order = PAGE_SHIFT; /* 4K page size aligned */

	default_bridge.genpool = gen_pool_create(

					default_bridge.min_alloc_order, -1);

	if (!default_bridge.genpool) {
@@ -402,7 +403,7 @@ static int __init qtee_shmbridge_init(void) 
exit_destroy_pool:

	gen_pool_destroy(default_bridge.genpool);

exit_freebuf:

	kfree(default_bridge.vaddr);

	free_pages((long)default_bridge.vaddr, get_order(default_bridge.size));

exit:

	return ret;

}