Piteball/android_kernel_samsung_msm8226
1
0
Fork 0
mirror of https://github.com/S3NEO/android_kernel_samsung_msm8226.git synced 2024-09-22 12:31:33 +00:00
Code Issues Projects Releases Packages Wiki Activity

MIPS: Calculate proper ebase value for 64-bit kernels

Browse source 
The ebase is relative to CKSEG0 not CAC_BASE.  On a 32-bit kernel they
are the same thing, for a 64-bit kernel they are not.

It happens to kind of work on a 64-bit kernel as they both reference
the same physical memory.  However since the CPU uses the CKSEG0 base,
determining if a J instruction will reach always gives the wrong result
unless we use the same number the CPU uses.

Signed-off-by: David Daney <ddaney@caviumnetworks.com>
To: linux-mips@linux-mips.org
Patchwork: http://patchwork.linux-mips.org/patch/1093/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
This commit is contained in:
David Daney 2010-04-06 13:29:50 -07:00 committed by Ralf Baechle
parent d8000beef2
commit f6be75d03c
1 changed files with 1 additions and 1 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

2
arch/mips/kernel/traps.c
View file

@ -1599,7 +1599,7 @@ void __init trap_init(void)
ebase = (unsigned long)
__alloc_bootmem(size, 1 << fls(size), 0);
} else {
ebase = CAC_BASE;
ebase = CKSEG0;
if (cpu_has_mips_r2)
ebase += (read_c0_ebase() & 0x3ffff000);
}