On Tue, 04 Dec 2012 08:40:27 +0100 Gerd Hoffmann wrote: >On Mon, 3 Dec 2012 13:47:04 -0500, Jason Baron wrote: >> 2) HPET ACPI error >> >> This line: 'IRQNoFlags () {2, 8}' in the HPET acpi table is causing the >> folloing ACPI message (removing it makes it go away): > > Hmm. That was added to make macos x happy and is also present on real > hardware, so I'm wondering what is going on here.
Without that line, OS X only works as a single-core, non-SMP guest. This is the "legacy replacement irq mapping" option for HPET (section 2.4.2, page 24 of the IA-PC HPET Specification). The options are 'IRQNoFlags () {2, 8}' for "APIC mapping" or 'IRQNoFlags () {0, 8}' for "8259 mapping". Either one works for SMP + OS X. I don't have an XP install image anymore, but does replacing 2,8 with 0,8 help ? On a few of my machines, this is actually coded as IRQNoFlags () {0} /* or 2 */ IRQNoFlags () {8} Based on my reading of the ACPI manual, this should be syntactically equivalent to the the comma-separated single-line format we're currently using, but could it be that WinXP is picky about the specifics ? Also, as far as I can tell, this change never made it into the "q35-acpi-dsdt.dsl" file, just the "classic" acpi-dsdt.dsl (or, lately, acpi-dsdt-hpet.dsl). I was about to submit another patch for that, but now I guess I won't press it until we sort this out :) --Gabriel