[GIT PULL] RISC-V Patches for the 5.17 Merge Window, Part 2

[Palmer Dabbelt]

The following changes since commit f1b744f65e2f9682347c5faf6377e61e2ab19a67:

  Merge tag 'riscv-for-linus-5.17-mw0' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux (2022-01-19 11:38:21 +0200)

are available in the Git repository at:

  git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux.git tags/riscv-for-linus-5.17-mw1

for you to fetch changes up to c59cd507fb640c2acc6b07cb60d7f765839e18c7:

  RISC-V: nommu_virt: Drop unused SLAB_MERGE_DEFAULT (2022-01-20 12:48:14 -0800)

----------------------------------------------------------------
RISC-V Patches for the 5.17 Merge Window, Part 2

* Support for sv48 paging.
* Hart ID mappings are now sparse, which enables more CPUs to come up on
  systems with sparse hart IDs.
* A handful of cleanups and fixes.

---
The sv48 patch set is a bit intrusive for something this late, but given that
it's being shown to fix some hangs it's seems better to take it now rather than
waiting.

I had no merge conflicts.

I'm not planning on submitting another PR for the merge window.

----------------------------------------------------------------
Alexandre Ghiti (9):
      riscv: Get rid of MAXPHYSMEM configs
      riscv: Move KASAN mapping next to the kernel mapping
      riscv: Split early kasan mapping to prepare sv48 introduction
      riscv: Introduce functions to switch pt_ops
      riscv: Allow to dynamically define VA_BITS
      asm-generic: Prepare for riscv use of pud_alloc_one and pud_free
      riscv: Implement sv48 support
      riscv: Use pgtable_l4_enabled to output mmu_type in cpuinfo
      riscv: Explicit comment about user virtual address space size

Atish Patra (6):
      RISC-V: Avoid using per cpu array for ordered booting
      RISC-V: Do not print the SBI version during HSM extension boot print
      RISC-V: Use __cpu_up_stack/task_pointer only for spinwait method
      RISC-V: Move the entire hart selection via lottery to SMP
      RISC-V: Move spinwait booting method to its own config
      RISC-V: Do not use cpumask data structure for hartid bitmap

Heinrich Schuchardt (1):
      riscv: default to CONFIG_RISCV_SBI_V01=n

Jisheng Zhang (6):
      riscv: mm: init: remove unnecessary "#ifdef CONFIG_CRASH_DUMP"
      riscv: mm: init: try best to use IS_ENABLED(CONFIG_64BIT) instead of #ifdef
      riscv: mm: init: remove _pt_ops and use pt_ops directly
      riscv: mm: init: try IS_ENABLED(CONFIG_XIP_KERNEL) instead of #ifdef
      riscv: mm: init: try best to remove #ifdef CONFIG_XIP_KERNEL usage
      riscv: bpf: Fix eBPF's exception tables

Lukas Bulwahn (1):
      riscv: canaan: remove useless select of non-existing config SYSCON

Minghao Chi (1):
      RISC-V: Remove redundant err variable

Palmer Dabbelt (2):
      RISC-V: Introduce sv48 support without relocatable kernel
      RISC-V: nommu_virt: Drop unused SLAB_MERGE_DEFAULT

Ron Economos (1):
      riscv: dts: sifive unmatched: Add gpio poweroff

kernel test robot (1):
      riscv: fix boolconv.cocci warnings

 Documentation/riscv/vm-layout.rst                  |  12 +-
 arch/riscv/Kconfig                                 |  52 +--
 .../riscv/boot/dts/sifive/hifive-unmatched-a00.dts |   5 +
 arch/riscv/configs/nommu_k210_defconfig            |   1 -
 arch/riscv/configs/nommu_k210_sdcard_defconfig     |   1 -
 arch/riscv/configs/nommu_virt_defconfig            |   2 -
 arch/riscv/include/asm/cpu_ops.h                   |   2 -
 arch/riscv/include/asm/cpu_ops_sbi.h               |  25 ++
 arch/riscv/include/asm/csr.h                       |   3 +-
 arch/riscv/include/asm/fixmap.h                    |   1 +
 arch/riscv/include/asm/kasan.h                     |  11 +-
 arch/riscv/include/asm/page.h                      |  16 +-
 arch/riscv/include/asm/pgalloc.h                   |  40 +++
 arch/riscv/include/asm/pgtable-64.h                | 108 +++++-
 arch/riscv/include/asm/pgtable.h                   |  65 +++-
 arch/riscv/include/asm/sbi.h                       |  19 +-
 arch/riscv/include/asm/smp.h                       |   2 -
 arch/riscv/include/asm/sparsemem.h                 |   6 +-
 arch/riscv/kernel/Makefile                         |   3 +-
 arch/riscv/kernel/asm-offsets.c                    |   3 +
 arch/riscv/kernel/cpu.c                            |  23 +-
 arch/riscv/kernel/cpu_ops.c                        |  26 +-
 arch/riscv/kernel/cpu_ops_sbi.c                    |  26 +-
 arch/riscv/kernel/cpu_ops_spinwait.c               |  27 +-
 arch/riscv/kernel/head.S                           |  38 ++-
 arch/riscv/kernel/head.h                           |   6 +-
 arch/riscv/kernel/ptrace.c                         |   4 +-
 arch/riscv/kernel/sbi.c                            | 189 ++++++-----
 arch/riscv/kernel/setup.c                          |  10 -
 arch/riscv/kernel/smpboot.c                        |   2 +-
 arch/riscv/kvm/mmu.c                               |   4 +-
 arch/riscv/kvm/vcpu_sbi_replace.c                  |  11 +-
 arch/riscv/kvm/vcpu_sbi_v01.c                      |  11 +-
 arch/riscv/kvm/vmid.c                              |   4 +-
 arch/riscv/mm/cacheflush.c                         |   5 +-
 arch/riscv/mm/context.c                            |   4 +-
 arch/riscv/mm/init.c                               | 378 +++++++++++++++------
 arch/riscv/mm/kasan_init.c                         | 248 ++++++++++----
 arch/riscv/mm/tlbflush.c                           |   9 +-
 arch/riscv/net/bpf_jit_comp64.c                    |   2 +-
 drivers/firmware/efi/libstub/efi-stub.c            |   2 +
 drivers/soc/canaan/Kconfig                         |   1 -
 include/asm-generic/pgalloc.h                      |  24 +-
 43 files changed, 1006 insertions(+), 425 deletions(-)
 create mode 100644 arch/riscv/include/asm/cpu_ops_sbi.h