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| author | Christophe Leroy <christophe.leroy@c-s.fr> | 2016-02-10 08:17:08 +0100 |
|---|---|---|
| committer | Scott Wood <oss@buserror.net> | 2016-03-11 20:04:32 -0600 |
| commit | 060ef9d89d18ea16f05e7c28875cee068220e248 (patch) | |
| tree | bb38234ec131b67a9ec2272325feff212ec0f20e /arch/powerpc/mm/pgtable_32.c | |
| parent | 84d3e2480564949a26870b6750a9168eb11f4c17 (diff) | |
| download | talos-obmc-linux-060ef9d89d18ea16f05e7c28875cee068220e248.tar.gz talos-obmc-linux-060ef9d89d18ea16f05e7c28875cee068220e248.zip | |
powerpc32: PAGE_EXEC required for inittext
PAGE_EXEC is required for inittext, otherwise CONFIG_DEBUG_PAGEALLOC
ends up with an Oops
[ 0.000000] Inode-cache hash table entries: 8192 (order: 1, 32768 bytes)
[ 0.000000] Sorting __ex_table...
[ 0.000000] bootmem::free_all_bootmem_core nid=0 start=0 end=2000
[ 0.000000] Unable to handle kernel paging request for instruction fetch
[ 0.000000] Faulting instruction address: 0xc045b970
[ 0.000000] Oops: Kernel access of bad area, sig: 11 [#1]
[ 0.000000] PREEMPT DEBUG_PAGEALLOC CMPC885
[ 0.000000] CPU: 0 PID: 0 Comm: swapper Not tainted 3.18.25-local-dirty #1673
[ 0.000000] task: c04d83d0 ti: c04f8000 task.ti: c04f8000
[ 0.000000] NIP: c045b970 LR: c045b970 CTR: 0000000a
[ 0.000000] REGS: c04f9ea0 TRAP: 0400 Not tainted (3.18.25-local-dirty)
[ 0.000000] MSR: 08001032 <ME,IR,DR,RI> CR: 39955d35 XER: a000ff40
[ 0.000000]
GPR00: c045b970 c04f9f50 c04d83d0 00000000 ffffffff c04dcdf4 00000048 c04f6b10
GPR08: c04f6ab0 00000001 c0563488 c04f6ab0 c04f8000 00000000 00000000 b6db6db7
GPR16: 00003474 00000180 00002000 c7fec000 00000000 000003ff 00000176 c0415014
GPR24: c0471018 c0414ee8 c05304e8 c03aeaac c0510000 c0471018 c0471010 00000000
[ 0.000000] NIP [c045b970] free_all_bootmem+0x164/0x228
[ 0.000000] LR [c045b970] free_all_bootmem+0x164/0x228
[ 0.000000] Call Trace:
[ 0.000000] [c04f9f50] [c045b970] free_all_bootmem+0x164/0x228 (unreliable)
[ 0.000000] [c04f9fa0] [c0454044] mem_init+0x3c/0xd0
[ 0.000000] [c04f9fb0] [c045080c] start_kernel+0x1f4/0x390
[ 0.000000] [c04f9ff0] [c0002214] start_here+0x38/0x98
[ 0.000000] Instruction dump:
[ 0.000000] 2f150000 7f968840 72a90001 3ad60001 56b5f87e 419a0028 419e0024 41a20018
[ 0.000000] 807cc20c 38800000 7c638214 4bffd2f5 <3a940001> 3a100024 4bffffc8 7e368b78
[ 0.000000] ---[ end trace dc8fa200cb88537f ]---
Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr>
Signed-off-by: Scott Wood <oss@buserror.net>
Diffstat (limited to 'arch/powerpc/mm/pgtable_32.c')
| -rw-r--r-- | arch/powerpc/mm/pgtable_32.c | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/arch/powerpc/mm/pgtable_32.c b/arch/powerpc/mm/pgtable_32.c index 815ccd780ac2..bf7bf32b54f8 100644 --- a/arch/powerpc/mm/pgtable_32.c +++ b/arch/powerpc/mm/pgtable_32.c @@ -40,7 +40,7 @@ unsigned long ioremap_bot; EXPORT_SYMBOL(ioremap_bot); /* aka VMALLOC_END */ -extern char etext[], _stext[]; +extern char etext[], _stext[], _sinittext[], _einittext[]; #define PGDIR_ORDER (32 + PGD_T_LOG2 - PGDIR_SHIFT) @@ -289,7 +289,8 @@ void __init __mapin_ram_chunk(unsigned long offset, unsigned long top) v = PAGE_OFFSET + s; p = memstart_addr + s; for (; s < top; s += PAGE_SIZE) { - ktext = ((char *) v >= _stext && (char *) v < etext); + ktext = ((char *)v >= _stext && (char *)v < etext) || + ((char *)v >= _sinittext && (char *)v < _einittext); f = ktext ? pgprot_val(PAGE_KERNEL_TEXT) : pgprot_val(PAGE_KERNEL); map_page(v, p, f); #ifdef CONFIG_PPC_STD_MMU_32 |
