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KVM: MIPS/VZ: Handle Octeon III guest.PRid register

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Octeon III implements a read-only guest CP0_PRid register, so add cases
to the KVM register access API for Octeon to ensure the correct value is
read and writes are ignored.

Signed-off-by: James Hogan <james.hogan@imgtec.com>
Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: "Radim Krčmář" <rkrcmar@redhat.com>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: David Daney <david.daney@cavium.com>
Cc: Andreas Herrmann <andreas.herrmann@caviumnetworks.com>
Cc: linux-mips@linux-mips.org
Cc: kvm@vger.kernel.org
This commit is contained in:
James Hogan
2017-03-14 10:25:50 +00:00
parent 3ba731daf0
commit 1f48f9be4d
2 changed files with 19 additions and 2 deletions
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2
arch/mips/include/asm/mipsregs.h
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@@ -2025,6 +2025,8 @@ do { \
#define read_gc0_epc() __read_ulong_gc0_register(14, 0)
#define write_gc0_epc(val) __write_ulong_gc0_register(14, 0, val)
#define read_gc0_prid() __read_32bit_gc0_register(15, 0)
#define read_gc0_ebase() __read_32bit_gc0_register(15, 1)
#define write_gc0_ebase(val) __write_32bit_gc0_register(15, 1, val)