header (C) fixes
Working on tracking IRQs for tracing and logging purposes.
PCI: tweaks
one more
PCI: MSI-X work
PCI: fixed few MSI-related bugs, now SLES boots fine with MSI SATA
PDM, VMM, PCI: reworked MSI API: now MSIs delivered via IOAPIC API, not with MMIO access, LSI logic now can work in MSI mode
PCI: MSI per-vector masking, saved states
PCI, PDM: initial drop of MSI support