On Tue, Jan 11, 2011 at 02:20:38PM -0200, Marcelo Tosatti wrote: > Document how QEMU communicates with ACPI BIOS for PCI hotplug. > > Signed-off-by: Marcelo Tosatti <mtosa...@redhat.com>
This one seems to add whitespae errors: /scm/qemu/.git/rebase-apply/patch:5: new blank line at EOF. + warning: 1 line adds whitespace errors. > Index: qemu/docs/specs/acpi_pci_hotplug.txt > =================================================================== > --- /dev/null > +++ qemu/docs/specs/acpi_pci_hotplug.txt > @@ -0,0 +1,39 @@ > +QEMU<->ACPI BIOS PCI hotplug interface > +-------------------------------------- > + > +QEMU supports PCI hotplug via ACPI, for PCI bus 0. This document > +describes the interface between QEMU and the ACPI BIOS. > + > +ACPI GPE block (IO ports 0xafe0-0xafe3, byte access): > +----------------------------------------- > + > +Generic ACPI GPE block. Bit 1 (GPE.1) used to notify PCI hotplug/eject > +event to ACPI BIOS, via SCI interrupt. > + > +PCI slot injection notification pending (IO port 0xae00-0xae03, 4-byte > access): > +--------------------------------------------------------------- > +Slot injection notification pending. One bit per slot. > + > +Read by ACPI BIOS GPE.1 handler to notify OS of injection > +events. > + > +PCI slot removal notification (IO port 0xae04-0xae07, 4-byte access): > +----------------------------------------------------- > +Slot removal notification pending. One bit per slot. > + > +Read by ACPI BIOS GPE.1 handler to notify OS of removal > +events. > + > +PCI device eject (IO port 0xae08-0xae0b, 4-byte access): > +---------------------------------------- > + > +Used by ACPI BIOS _EJ0 method to request device removal. One bit per slot. > +Reads return 0. > + > +PCI removability status (IO port 0xae0c-0xae0f, 4-byte access): > +----------------------------------------------- > + > +Used by ACPI BIOS _RMV method to indicate removability status to OS. One > +bit per slot. > + > + >