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ba737541ed
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2 Commits

Author SHA1 Message Date
Alex Williamson
ba737541ed acpi_piix4: Disallow write to up/down PCI hotplug registers 
The write side of these registers is never used and actually can't be
used as defined because any read/modify/write sequence from the guest
potentially races with qemu.  Drop the write support and define these
as read-only registers.

Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
 2012-04-15 12:17:22 +03:00
Marcelo Tosatti
9c046d96d4 document QEMU<->ACPIBIOS PCI hotplug interface 
Document how QEMU communicates with ACPI BIOS for PCI hotplug.

Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
 2011-01-17 17:29:42 +02:00