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authorDavid Gibson <david@gibson.dropbear.id.au>2012-01-11 19:46:26 +0000
committerAlexander Graf <agraf@suse.de>2012-01-21 05:17:02 +0100
commitc9c3c80af71dd2b7813d1ada9b14cb51df584221 (patch)
treec44c4eb2f0bc79d92142dd93ca2347bfa5fe7096 /hw/milkymist-hw.h
parent3f7565c957c14e4600d471791fca8e534c1ad0b7 (diff)
pseries: Use correct dispatcher for PCI config space accesses
The pseries machine expects a para-virtualized guest and so supplies RTAS functions (via a hypercall) for performing PCI config space access. Currently the implementation of these calls into pci_default_{read,write}_config(). However this would be incorrect for any PCI device which overrides the default config read/write functions. AFAICT there's only one such device today, but we should still get it right. In addition the pci_host_config_{read,write}_common() functions which do correctly do this dispatch, perform bounds checking on the config space address, lack of which currently leads to an exploitable bug. This patch corrects the problem. Signed-off-by: David Gibson <david@gibson.dropbear.id.au> Signed-off-by: Alexander Graf <agraf@suse.de>
Diffstat (limited to 'hw/milkymist-hw.h')
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