Signed-off-by: Helge Deller <deller@xxxxxx> diff --git a/arch/parisc/kernel/traps.c b/arch/parisc/kernel/traps.c index 68e671a11987..720ea2a6c462 100644 --- a/arch/parisc/kernel/traps.c +++ b/arch/parisc/kernel/traps.c @@ -837,6 +837,17 @@ void __init initialize_ivt(const void *iva) if (pdc_instr(&instr) == PDC_OK) ivap[0] = instr; + /* + * Rules for checksum of HPMC handler: + * 1. The IVA does not point to PDC/PDH space (ie: the OS has installed + * its own IVA). + * 2. The word at IVA+32 is nonzero. + * 3. If Length (IVA+60) is not zero, then Length (IVA+60) and Address + * (IVA+56) are word-aligned. + * 4. The checksum of the 8 words starting at IVA+32 plus the sum of + * the Length/4 words starting at Address is zero. + */ + /* Compute Checksum for HPMC handler */ length = os_hpmc_size; ivap[7] = length; -- To unsubscribe from this list: send the line "unsubscribe linux-parisc" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
