Merge tag 'pull-riscv-to-apply-20231012-1' of https://github.com/alistair23/qemu into staging

Second RISC-V PR for 8.2

 * Add support for the max CPU
 * Detect user choice in TCG
 * Clear CSR values at reset and sync MPSTATE with host
 * Fix the typo of inverted order of pmpaddr13 and pmpaddr14
 * Split TCG/KVM accelerators from cpu.c
 * Add extension properties for all cpus
 * Replace GDB exit calls with proper shutdown
 * Support KVM_GET_REG_LIST
 * Remove RVG warning
 * Use env_archcpu for better performance
 * Deprecate capital 'Z' CPU properties
 * Fix vfwmaccbf16.vf

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* tag 'pull-riscv-to-apply-20231012-1' of https://github.com/alistair23/qemu: (54 commits)
  target/riscv: Fix vfwmaccbf16.vf
  target/riscv: deprecate capital 'Z' CPU properties
  target/riscv: Use env_archcpu for better performance
  target/riscv/tcg: remove RVG warning
  target/riscv/kvm: support KVM_GET_REG_LIST
  target/riscv/kvm: improve 'init_multiext_cfg' error msg
  gdbstub: replace exit calls with proper shutdown for softmmu
  hw/char: riscv_htif: replace exit calls with proper shutdown
  hw/misc/sifive_test.c: replace exit calls with proper shutdown
  softmmu: pass the main loop status to gdb "Wxx" packet
  softmmu: add means to pass an exit code when requesting a shutdown
  target/riscv/tcg-cpu.c: add extension properties for all cpus
  target/riscv: add riscv_cpu_get_name()
  target/riscv/cpu: move priv spec functions to tcg-cpu.c
  target/riscv/cpu.c: export isa_edata_arr[]
  target/riscv/tcg: move riscv_cpu_add_misa_properties() to tcg-cpu.c
  target/riscv/cpu.c: make misa_ext_cfgs[] 'const'
  target/riscv/tcg: introduce tcg_cpu_instance_init()
  target/riscv/cpu.c: export set_misa()
  target/riscv/kvm: do not use riscv_cpu_add_misa_properties()
  ...

Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
This commit is contained in:
Stefan Hajnoczi
2023-10-12 10:24:44 -04:00
29 changed files with 1606 additions and 893 deletions

View File

@ -327,6 +327,41 @@ QEMU's ``vhost`` feature, which would eliminate the high latency costs under
which the 9p ``proxy`` backend currently suffers. However as of to date nobody
has indicated plans for such kind of reimplementation unfortunately.
RISC-V 'any' CPU type ``-cpu any`` (since 8.2)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
The 'any' CPU type was introduced back in 2018 and has been around since the
initial RISC-V QEMU port. Its usage has always been unclear: users don't know
what to expect from a CPU called 'any', and in fact the CPU does not do anything
special that isn't already done by the default CPUs rv32/rv64.
After the introduction of the 'max' CPU type, RISC-V now has a good coverage
of generic CPUs: rv32 and rv64 as default CPUs and 'max' as a feature complete
CPU for both 32 and 64 bit builds. Users are then discouraged to use the 'any'
CPU type starting in 8.2.
RISC-V CPU properties which start with capital 'Z' (since 8.2)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
All RISC-V CPU properties which start with capital 'Z' are being deprecated
starting in 8.2. The reason is that they were wrongly added with capital 'Z'
in the past. CPU properties were later added with lower-case names, which
is the format we want to use from now on.
Users which try to use these deprecated properties will receive a warning
recommending to switch to their stable counterparts:
- "Zifencei" should be replaced with "zifencei"
- "Zicsr" should be replaced with "zicsr"
- "Zihintntl" should be replaced with "zihintntl"
- "Zihintpause" should be replaced with "zihintpause"
- "Zawrs" should be replaced with "zawrs"
- "Zfa" should be replaced with "zfa"
- "Zfh" should be replaced with "zfh"
- "Zfhmin" should be replaced with "zfhmin"
- "Zve32f" should be replaced with "zve32f"
- "Zve64f" should be replaced with "zve64f"
- "Zve64d" should be replaced with "zve64d"
Block device options
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