From 46284cd6bfc99a38165c41651477ec6497aa38ec Mon Sep 17 00:00:00 2001 From: Sonic Zhang Date: Mon, 20 Sep 2010 11:06:18 +0000 Subject: [PATCH] Blackfin: merge kernel init memory back into main memory region If the kernel's init section is merged back into the main memory region during boot (which it should since that is how we've laid out the kernel linker map), we want to make sure that these aren't counted as independent regions. Otherwise, if a large mapping is attempted which starts in the init region and extends into the main memory region, the access_ok func will deny it. This leads to weird messages during runtime like "unable to map xxx library" from the ldso but upon running the application again, everything works fine. So if the address of the end of the init region is the same as the start of the main memory region, simply enlarge the memory region to include the init region. Signed-off-by: Sonic Zhang Signed-off-by: Mike Frysinger --- arch/blackfin/mm/init.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/arch/blackfin/mm/init.c b/arch/blackfin/mm/init.c index bb4e8ff..f8435cd 100644 --- a/arch/blackfin/mm/init.c +++ b/arch/blackfin/mm/init.c @@ -158,5 +158,8 @@ void __init_refok free_initmem(void) free_init_pages("unused kernel memory", (unsigned long)(&__init_begin), (unsigned long)(&__init_end)); + + if (memory_start == (unsigned long)(&__init_end)) + memory_start = (unsigned long)(&__init_begin); #endif } -- 2.7.4