[PATCH v3 00/13] RISC-V: Update the Hypervisor spec to v0.6.1

[Alistair Francis]

This series updates the experimental QEMU RISC-V Hypervisor spec to the
v0.6.1 draft implementation.

THis includes support for the new 2-stage lookup instructions and the new
CSRs.

It also includes the new 0.6.1 support for the virtual instruction
fault.

This was tested by running 32-bit and 64-bit Xvisor on QEMU and starting
Linux guests.

v3:
 - Rebase on master
v2:
 - Update to v0.6.1



Alistair Francis (13):
  target/riscv: Allow setting a two-stage lookup in the virt status
  target/riscv: Allow generating hlv/hlvx/hsv instructions
  target/riscv: Do two-stage lookups on hlv/hlvx/hsv instructions
  target/riscv: Don't allow guest to write to htinst
  target/riscv: Convert MSTATUS MTL to GVA
  target/riscv: Fix the interrupt cause code
  target/riscv: Update the Hypervisor trap return/entry
  target/riscv: Update the CSRs to the v0.6 Hyp extension
  target/riscv: Only support a single VSXL length
  target/riscv: Only support little endian guests
  target/riscv: Support the v0.6 Hypervisor extension CRSs
  target/riscv: Return the exception from invalid CSR accesses
  target/riscv: Support the Virtual Instruction fault

 target/riscv/cpu.h                      |   2 +
 target/riscv/cpu_bits.h                 |  25 +-
 target/riscv/helper.h                   |   4 +
 target/riscv/insn32-64.decode           |   5 +
 target/riscv/insn32.decode              |  11 +
 target/riscv/cpu_helper.c               | 123 +++++----
 target/riscv/csr.c                      | 171 ++++++++++--
 target/riscv/insn_trans/trans_rvh.inc.c | 342 +++++++++++++++++++++++-
 target/riscv/op_helper.c                | 176 +++++++++++-
 target/riscv/translate.c                |  10 -
 10 files changed, 761 insertions(+), 108 deletions(-)

-- 
2.27.0