[PATCH] to fix slow gen2 Intel video (i830, i845, i85x, i865) with KMS

From: Taku YAMAMOTO <taku_at_tackymt.homeip.net> Date: Sat, 26 Jan 2013 05:06:54 +0900 · This archive was generated by hypermail 2.4.0 : Wed May 19 2021 - 11:40:34 UTC

Hi all,

A good news to owners of i830, i845, i852, i855 and i865 (a.k.a. gen2),
who've got frustrated with the bad performance with KMS.

I managed to track down the root cause of the slowness of gen2 with KMS and
finally fixed it.
The attached one-liner patch is the fix.
(It was my surprise that the actual problem lied in agp rather than i915kms.)

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