linux.git/arch/mips/include/uapi/asm/inst.h, branch v4.12

KVM: MIPS: Implement HYPCALL emulation

2017-03-28T13:53:33+00:00

Emulate the HYPCALL instruction added in the VZ ASE and used by the MIPS
paravirtualised guest support that is already merged. The new hypcall.c
handles arguments and the return value. No actual hypercalls are yet
supported, but this still allows us to safely step over hypercalls and
set an error code in the return value for forward compatibility.

Non-zero HYPCALL codes are not handled.

We also document the hypercall ABI which asm/kvm_para.h uses.

Signed-off-by: James Hogan 
Acked-by: Ralf Baechle 
Cc: Paolo Bonzini 
Cc: "Radim Krčmář" 
Cc: Andreas Herrmann 
Cc: David Daney 
Cc: Jonathan Corbet 
Cc: linux-mips@linux-mips.org
Cc: kvm@vger.kernel.org
Cc: linux-doc@vger.kernel.org

MIPS: inst.h: Rename cbcond{0,1}_op to pop{1,3}0_op

2016-07-05T14:09:07+00:00

The opcodes currently defined in inst.h as cbcond0_op & cbcond1_op are
actually defined in the MIPS base instruction set manuals as pop10 &
pop30 respectively. Rename them as such, for consistency with the
documentation.

Signed-off-by: Paul Burton 
Signed-off-by: James Hogan 
Acked-by: Ralf Baechle 
Cc: linux-mips@linux-mips.org
Signed-off-by: Paolo Bonzini

MIPS: inst.h: Rename b{eq,ne}zcji[al]c_op to pop{6,7}6_op

2016-07-05T14:08:59+00:00

The opcodes currently defined in inst.h as beqzcjic_op & bnezcjialc_op
are actually defined in the MIPS base instruction set manuals as pop66 &
pop76 respectively. Rename them as such, for consistency with the
documentation.

Signed-off-by: Paul Burton 
Signed-off-by: James Hogan 
Acked-by: Ralf Baechle 
Cc: linux-mips@linux-mips.org
Signed-off-by: Paolo Bonzini

MIPS: uasm: Add r6 MUL encoding

2016-07-05T14:08:40+00:00

Add the R6 MUL instruction encoding for 3 operand signed multiply to
uasm so that KVM can use uasm for generating its entry point code at
runtime on R6.

Signed-off-by: James Hogan 
Acked-by: Ralf Baechle 
Cc: linux-mips@linux-mips.org
Signed-off-by: Paolo Bonzini

MIPS: uasm: Add MTHI/MTLO instructions

2016-07-05T14:08:35+00:00

Add MTHI/MTLO instructions for writing to the hi & lo registers to uasm
so that KVM can use uasm for generating its entry point code at runtime.

Signed-off-by: James Hogan 
Acked-by: Ralf Baechle 
Cc: linux-mips@linux-mips.org
Signed-off-by: Paolo Bonzini

MIPS: uasm: Add DI instruction

2016-07-05T14:08:29+00:00

Add DI instruction for disabling interrupts to uasm so that KVM can use
uasm for generating its entry point code at runtime.

Signed-off-by: James Hogan 
Acked-by: Ralf Baechle 
Cc: linux-mips@linux-mips.org
Signed-off-by: Paolo Bonzini

MIPS: uasm: Add CFCMSA/CTCMSA instructions

2016-07-05T14:08:20+00:00

Add CFCMSA/CTCMSA instructions for accessing MSA control registers to
uasm so that KVM can use uasm for generating its entry point code at
runtime.

Signed-off-by: James Hogan 
Acked-by: Ralf Baechle 
Cc: linux-mips@linux-mips.org
Signed-off-by: Paolo Bonzini

MIPS: KVM: Convert emulation to use asm/inst.h

2016-06-15T21:58:17+00:00

Convert various MIPS KVM guest instruction emulation functions to decode
instructions (and encode translations) using the union mips_instruction
and related enumerations in asm/inst.h rather than #defines and
hardcoded values.

Signed-off-by: James Hogan 
Acked-by: Ralf Baechle 
Cc: Paolo Bonzini 
Cc: Radim Krčmář 
Cc: linux-mips@linux-mips.org
Cc: kvm@vger.kernel.org
Signed-off-by: Paolo Bonzini

MIPS: inst: Declare fsel_op for sel.fmt instruction

2016-05-13T12:02:21+00:00

Declare the opcode for the MIPSr6 sel.fmt instruction, as fsel_op in
order to match other FP op names.

Signed-off-by: Paul Burton 
Cc: Maciej W. Rozycki 
Cc: Leonid Yegoshin 
Cc: James Hogan 
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/13152/
Signed-off-by: Ralf Baechle

MIPS: Loongson-3: Fast TLB refill handler

2016-05-13T12:02:15+00:00

Loongson-3A R2 has pwbase/pwfield/pwsize/pwctl registers in CP0 (this
is very similar to HTW) and lwdir/lwpte/lddir/ldpte instructions which
can be used for fast TLB refill.

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

Signed-off-by: Huacai Chen 
Cc: Aurelien Jarno 
Cc: Steven J . Hill 
Cc: Fuxin Zhang 
Cc: Zhangjin Wu 
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/12754/
Signed-off-by: Ralf Baechle