[Bug 110602] i965 miptree MCS aux_buf allocation failure with old kernels

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=110602

--- Comment #8 from Anssi Hannula <anssi.hannula at bitwise.fi> ---
Created attachment 144171
  --> https://bugs.freedesktop.org/attachment.cgi?id=144171&action=edit
Fallback to non-raw mapping

Indeed, the attached patch that simply fallbacks to non-MAP_RAW seems to also
work, at least with my testcase.

The patch fallbacks to non-raw in all cases, no idea if that is wanted or just
for MCS.

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