Bug 7519 - Suspicious code in xf86ExtendedInitInt10
Summary: Suspicious code in xf86ExtendedInitInt10
Alias: None
Product: xorg
Classification: Unclassified
Component: Server/General (show other bugs)
Version: git
Hardware: x86 (IA32) Linux (All)
: high minor
Assignee: Xorg Project Team
QA Contact: Xorg Project Team
Depends on:
Blocks: xorg-7.4
  Show dependency treegraph
Reported: 2006-07-13 16:17 UTC by Ian Romanick
Modified: 2008-02-29 12:28 UTC (History)
0 users

See Also:
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i915 features:


Description Ian Romanick 2006-07-13 16:17:16 UTC
The BUS_ISA case in xf86ExtendedInitInt10 (hw/xfree86/int10/generic.c, line 220)
seems suspicious.  bios_location gets set to bios.location.legacy regardless of
the value of bios.location.legacy.  However, a different message is printed if
bios.location.legacy is zero.

In addition, in the case where _PC is not defined (line 315), bios_location is
only over-ridden when bios.location.legacy is non-zero.

This is suspicious, and I suspect that the code at line 220 is wrong.  If it is
correct, can anybody explain why?
Comment 1 Daniel Stone 2007-02-27 01:32:55 UTC
Sorry about the phenomenal bug spam, guys.  Adding xorg-team@ to the QA contact so bugs don't get lost in future.
Comment 2 Adam Jackson 2008-02-29 12:28:50 UTC
The BiosLocation option is gone now, so I think this is moot.  ISA devices had better have their ROM at 0xc0000 or else.

ISA support is effectively dead in 1.5 anyway.

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