diff options
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/powerpc/include/asm/exception-64s.h | 3 | ||||
| -rw-r--r-- | arch/powerpc/kernel/exceptions-64s.S | 4 | ||||
| -rw-r--r-- | arch/powerpc/kernel/setup_64.c | 5 |
3 files changed, 9 insertions, 3 deletions
diff --git a/arch/powerpc/include/asm/exception-64s.h b/arch/powerpc/include/asm/exception-64s.h index a43c1473915f..9258daac4964 100644 --- a/arch/powerpc/include/asm/exception-64s.h +++ b/arch/powerpc/include/asm/exception-64s.h @@ -55,7 +55,8 @@ * word. */ #define LOAD_HANDLER(reg, label) \ - addi reg,reg,(label)-_stext; /* virt addr of handler ... */ + /* Handlers must be within 64K of kbase, which must be 64k aligned */ \ + ori reg,reg,(label)-_stext; /* virt addr of handler ... */ /* Exception register prefixes */ #define EXC_HV H diff --git a/arch/powerpc/kernel/exceptions-64s.S b/arch/powerpc/kernel/exceptions-64s.S index de029640ba26..0969b7ff0f87 100644 --- a/arch/powerpc/kernel/exceptions-64s.S +++ b/arch/powerpc/kernel/exceptions-64s.S @@ -585,8 +585,8 @@ __end_interrupts: * Code from here down to __end_handlers is invoked from the * exception prologs above. Because the prologs assemble the * addresses of these handlers using the LOAD_HANDLER macro, - * which uses an addi instruction, these handlers must be in - * the first 32k of the kernel image. + * which uses an ori instruction, these handlers must be in + * the first 64k of the kernel image. */ /*** Common interrupt handlers ***/ diff --git a/arch/powerpc/kernel/setup_64.c b/arch/powerpc/kernel/setup_64.c index efb6a41b3131..6da881b35dac 100644 --- a/arch/powerpc/kernel/setup_64.c +++ b/arch/powerpc/kernel/setup_64.c @@ -601,6 +601,11 @@ void __init setup_arch(char **cmdline_p) kvm_linear_init(); + /* Interrupt code needs to be 64K-aligned */ + if ((unsigned long)_stext & 0xffff) + panic("Kernelbase not 64K-aligned (0x%lx)!\n", + (unsigned long)_stext); + ppc64_boot_msg(0x15, "Setup Done"); } |