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authorBenjamin Herrenschmidt <benh@kernel.crashing.org>2005-05-01 08:58:40 -0700
committerLinus Torvalds <torvalds@ppc970.osdl.org>2005-05-01 08:58:40 -0700
commitf1c55dea0bb2df94aa2b01b0871cb02f2e206676 (patch)
tree0bac72de98485c578bd0590daf4c7d9090660c6d /scripts
parentb207a290ea7dc83dba02e40b81cc8a29415a9c60 (diff)
[PATCH] ppc32: Fix errata for some G3 CPUs
Some G3 CPUs can crash in funny way if a store from an FPU register instruction is executed on a register that has never been initialized since power on. This patch fixes it by making sure all FP registers have been properly initialized at kernel boot and when waking from sleep. It also makes the code that decides wether HID0_BTIC and HID0_DPM are allowed on a given CPU smarter (it can actually _clear_ them now if they are not allowed instead of just setting them when they are allowed in case the firmware got them wrong) Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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