[PATCH 0/9] MIPS: General EVA fixes & cleanups

[James Hogan <james.hogan@imgtec.com>]

These patches fix some general MIPS Enhanced Virtual Addressing (EVA)
issues, with the aim of allowing KVM to be fixed to work on EVA host
kernels.

Patches 1-3 improve the CP0_EBase handling, particularly in relation to
the Write Gate (WG) bit which allows the upper bits (63:30 on MIPS64,
31:30 on MIPS32) to be modified. This allows CP0_EBase to be set
correctly with EVA, even when the boot time allocated exception vector
is not in KSeg0. They will also help with Matt's upcoming rproc patches.

Patch 4 then drops the EVA specific L2 cache flushing from
flush_icache_range(), which appeared to work around the partial
CP0_EBase assignment fixed by patch 3.

Patches 5-9 fix the semantics of flush_icache_range(), which only works
on user pointers with EVA. We add a new __flush_icache_user_range() API
in patch 5, fix users of flush_icache_range() with user pointers in
patches 6-8, and finally separate the implementations so that
flush_icache_range() works with kernel addresses in patch 9.

Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: Matt Redfearn <matt.redfearn@imgtec.com>
Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: "Radim Krčmář" <rkrcmar@redhat.com>
Cc: Leonid Yegoshin <leonid.yegoshin@imgtec.com>
Cc: linux-mips@linux-mips.org
Cc: kvm@vger.kernel.org

James Hogan (8):
  MIPS: traps: 64bit kernels should read CP0_EBase 64bit
  MIPS: traps: Convert ebase to KSeg0
  MIPS: c-r4k: Drop bc_wback_inv() from icache flush
  MIPS: c-r4k: Split user/kernel flush_icache_range()
  MIPS: cacheflush: Use __flush_icache_user_range()
  MIPS: uprobes: Flush icache via kernel address
  MIPS: KVM: Use __local_flush_icache_user_range()
  MIPS: c-r4k: Fix flush_icache_range() for EVA

Matt Redfearn (1):
  MIPS: traps: Ensure full EBase is written

 arch/mips/include/asm/cacheflush.h |  5 +++-
 arch/mips/kernel/traps.c           | 49 +++++++++++++++++++++++++++--
 arch/mips/kernel/uprobes.c         | 13 ++------
 arch/mips/kvm/dyntrans.c           |  4 +-
 arch/mips/mm/c-octeon.c            |  2 +-
 arch/mips/mm/c-r3k.c               |  2 +-
 arch/mips/mm/c-r4k.c               | 52 ++++++++++++++++++++-----------
 arch/mips/mm/c-tx39.c              |  3 ++-
 arch/mips/mm/cache.c               |  6 +++-
 9 files changed, 104 insertions(+), 32 deletions(-)

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