#11137 closed bug (invalid)
Bad GTT initilization in agp_gart driver
| Reported by: | Eddy | Owned by: | nobody |
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| Priority: | normal | Milestone: | |
| Component: | Drivers/Graphics/intel_extreme | Version: | R1/Development |
| Keywords: | Cc: | ||
| Blocked By: | Blocking: | ||
| Platform: | All |
Description (last modified by )
In the file intel_gart.cpp, the initialisation of the info.gtt_entries is using a Page size as a divider while a gtt entry (PTE) is a DWORD. As a consequence the gtt is not initialised with the scratch_page.
Change History (5)
comment:1 by , 10 years ago
| Component: | Drivers/Graphics → Drivers/Graphics/intel_extreme |
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| Owner: | changed from to |
comment:2 by , 10 years ago
| Description: | modified (diff) |
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comment:3 by , 8 years ago
| Owner: | changed from to |
|---|---|
| Status: | new → assigned |
comment:4 by , 5 years ago
| Resolution: | → invalid |
|---|---|
| Status: | assigned → closed |
Each entry in the GTT is itself a DWORD, but configures the mapping for one page of memory. gtt_entries is the correct number of entries needed to fill the table and make sure all unmapped access land into the scratch page.
comment:5 by , 5 years ago
| Milestone: | R1 |
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Remove milestone for tickets with status = closed and resolution != fixed
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Note that Linux has now moved that code into the graphics driver. This would also probably simplify things for us.