On Monday, March 07, 2005 3:12 PM Jesse Barnes wrote: >On Monday, March 7, 2005 3:03 pm, Nguyen, Tom L wrote: >> On Monday, March 07, 2005 12:41 PM Colin Ngam wrote: >> > I looked at Documentation/MSI-HOWTO.txt(linux-ia64-release-2.6.11) and >> > >> > it mentioned that CONFIG_X86_LOCAL_APIC has to be configured. I did >> >> not >> >> > find this configured on in any sample ia64 config files, but it does >> > exist in defconfig for i386. Is this just an ia32 config option? >> >> IA64 uses SAPIC instead of IOxAPIC. SAPIC, which is somewhat similar to >> IOxAPIC, is included in IA64 kernel. MSI/MSI-X support configuration >> option therefore is always available in IA64.
>So the MSIs are programmed to point at the processor SAPIC block? I think >that'll work for us on Altix, but if they're pointed at an external Intel >(or >compatible) interrupt controller, we'll have to write new code for Altix. MSI/MSI-X message address is programmed to point at specific processor, not an external Intel interrupt controller, as a target. Thanks, Long - To unsubscribe from this list: send the line "unsubscribe linux-ia64" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html
