Re: memory problem for s5pv210 porting
Adam Lackorzynski <[email protected]>
| Newsgroups | gmane.comp.micro-kernel.l4.devel |
|---|---|
| Message-ID | <[email protected]> |
On Thu Feb 28, 2013 at 21:33:53 +0800, meng-qy wrote: > Thank you for your suggestion! Following your guidance, I log the PF info when system dead like this: > > test 1: > pf: 000a pfa=2016a8f8 ip=2016a8f8 (r-) spc=0xf12e475c 144 > pf: 000a pfa=2016a8f8 ip=2016a8f8 (r-) spc=0xf12e475c 143 > pf: 000a pfa=2016a8f8 ip=2016a8f8 (r-) spc=0xf12e475c 142 > pf: 000a pfa=2016a8f8 ip=2016a8f8 (r-) spc=0xf12e475c 141 > pf: 000a pfa=2016a8f8 ip=2016a8f8 (r-) spc=0xf12e475c 140 > test 2: > pf: 000a pfa=20144128 ip=20144128 (r-) spc=0xf12e475c 105 > pf: 000a pfa=20144128 ip=20144128 (r-) spc=0xf12e475c 104 > pf: 000a pfa=20144128 ip=20144128 (r-) spc=0xf12e475c 103 > pf: 000a pfa=20144128 ip=20144128 (r-) spc=0xf12e475c 102 > test 3: > pf: 000a pfa=2016a8f8 ip=2016a8f8 (r-) spc=0xf12e475c 116 > pf: 000a pfa=2016a8f8 ip=2016a8f8 (r-) spc=0xf12e475c 115 > pf: 000a pfa=2016a8f8 ip=2016a8f8 (r-) spc=0xf12e475c 114 > pf: 000a pfa=2016a8f8 ip=2016a8f8 (r-) spc=0xf12e475c 113 > pf: 000a pfa=2016a8f8 ip=2016a8f8 (r-) spc=0xf12e475c 112 > > What is spc? pc or sp ? I objdump the image, and did not found that address. pc is the program counter, sp is the stack pointer, spc is a kernel internal data structure (Space). So this is a code pagefault, likely in the roottask/moe. > However, we can't get more info in dump file because the file didn't include any symbol table(Can we > dump the symbol table by adding some compile option? ). Use fiasco.image file for the kernel. > At last, different from other chip, we found that address > e0000000-fb000000 in s5pv210 is some important register, and the > kernel seem to map that address, it doesn't matter? What you describe are physical addresses, the kernel uses virtual ones, i.e. the virtual address does not point to the physical address. So yes, it does not matter. Adam -- Adam [email protected] Lackorzynski http://os.inf.tu-dresden.de/~adam/