[incubator-nuttx] branch master updated (2b63b81 -> 0a1a1e9)

[xi...@apache.org]

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xiaoxiang pushed a change to branch master
in repository https://gitbox.apache.org/repos/asf/incubator-nuttx.git.


    from 2b63b81  libs/libc/misc/lib_execinfo.c: fix bad memory access
     add 926a192  Add simple MMU driver for RISC-V (Sv39)
     add 33435e7  Changes to Sv39 MMU driver public header
     add e676d29  Present common MMU flags in common MMU driver header
     add c4b3672  RISC-V MMU driver: fix region setting for L1/L2 page tables
     add 56ade25  Add pte getter to RISC-V MMU driver
     add 0a1a1e9  Fix user PGT flags (don't map them globally)

No new revisions were added by this update.

Summary of changes:
 arch/risc-v/Kconfig                                |   6 +
 .../qemu_rv_irq_dispatch.c => common/riscv_mmu.c}  | 119 ++++----
 arch/risc-v/src/common/riscv_mmu.h                 | 301 +++++++++++++++++++++
 arch/risc-v/src/mpfs/Make.defs                     |  14 +-
 arch/risc-v/src/mpfs/mpfs_head.S                   |   5 +
 5 files changed, 381 insertions(+), 64 deletions(-)
 copy arch/risc-v/src/{qemu-rv/qemu_rv_irq_dispatch.c => common/riscv_mmu.c} (53%)
 create mode 100644 arch/risc-v/src/common/riscv_mmu.h