MIPS: Add probing & defs for VZ & guest features
authorJames Hogan <james.hogan@imgtec.com>
Wed, 11 May 2016 14:50:30 +0000 (15:50 +0100)
committerRalf Baechle <ralf@linux-mips.org>
Fri, 13 May 2016 13:30:25 +0000 (15:30 +0200)
commit6ad816e77ed77538fe729050cf6631328c6113f7
treef04c89b18b8a90d9abc9be6e181cb247c1335d63
parent7eb91118227d71132ca2da06a9b376ba656171d9
MIPS: Add probing & defs for VZ & guest features

Add a few new cpu-features.h definitions for VZ sub-features, namely the
existence of the CP0_GuestCtl0Ext, CP0_GuestCtl1, and CP0_GuestCtl2
registers, and support for GuestID to dialias TLB entries belonging to
different guests.

Also add certain features present in the guest, with the naming scheme
cpu_guest_has_*. These are added separately to the main options bitfield
since they generally parallel similar features in the root context. A
few of these (FPU, MSA, watchpoints, perf counters, CP0_[X]ContextConfig
registers, MAAR registers, and probably others in future) can be
dynamically configured in the guest context, for which the
cpu_guest_has_dyn_* macros are added.

[ralf@linux-mips.org: Resolve merge conflict.]

Signed-off-by: James Hogan <james.hogan@imgtec.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/13231/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
arch/mips/include/asm/cpu-features.h
arch/mips/include/asm/cpu-info.h
arch/mips/include/asm/cpu.h
arch/mips/kernel/cpu-probe.c