[RFC][PATCH v4] MPC5121 TLB errata workaround

[David Jander]

Ooops, ok I think I just missed your proposal, Kumar.

Anyway, I'll post my benchmark results to this here:

1.- mplayer -nosound -benchmark testfile.mpeg (a DVD-mpeg2 file):

No fix at all:
VC: 30.5s VO: 53.4s Sys:1.95s Total: 85.8s

First fix (force writes to way 0):
VC: 24.3s VO: 40.6s Sys:1.95s Total: 66.9s

Second fix (implementing lrw):
VC: 23.1s VO: 31.5s Sys:1.03s Total: 55.6s

Third fix (patch v4, lrw in SPRG6):
VC: 21.055s VO: 28.289s Sys:0.972s Total: 50.316s



2.- prboom -timedemo doombench1 (where doombench1.lmp is prerecorded demo):

No fix at all: 14.1 fps
First fix (force writes to way 0): 16.7 fps
Second fix (implementing lrw): 18.1 fps
Third fix (patch v4, lrw in SPRG6): 19.9 fps



3.- Synthetic and pathologic memcpy() benchmark:
No fix at all: 26 Mbyte/s
First fix (force writes to way 0): 160 MByte/s
Second fix (implementing lrw): 163 MByte/s
Third fix (patch v4, lrw in SPRG6): 180 MByte/s


Best regards,

-- 
David Jander
Protonic Holland.