diff options
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/powerpc/include/asm/exception-64s.h | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/arch/powerpc/include/asm/exception-64s.h b/arch/powerpc/include/asm/exception-64s.h index bed66e5743b3..1a9afded909f 100644 --- a/arch/powerpc/include/asm/exception-64s.h +++ b/arch/powerpc/include/asm/exception-64s.h @@ -84,12 +84,12 @@ /* * We're short on space and time in the exception prolog, so we can't - * use the normal SET_REG_IMMEDIATE macro. Normally we just need the - * low halfword of the address, but for Kdump we need the whole low - * word. + * use the normal LOAD_REG_IMMEDIATE macro to load the address of label. + * Instead we get the base of the kernel from paca->kernelbase and or in the low + * part of label. This requires that the label be within 64KB of kernelbase, and + * that kernelbase be 64K aligned. */ #define LOAD_HANDLER(reg, label) \ - /* Handlers must be within 64K of kbase, which must be 64k aligned */ \ ori reg,reg,(label)-_stext; /* virt addr of handler ... */ /* Exception register prefixes */ |