Re: [GIT PULL] RISC-V Patches for the 5.8 Merge Window, Part 1

[Palmer Dabbelt]

On Thu, 04 Jun 2020 12:50:13 PDT (-0700), atishp@xxxxxxxxxxxxxx wrote:
> On Thu, Jun 4, 2020 at 11:57 AM Palmer Dabbelt <palmer@xxxxxxxxxxx> wrote:
> > The following changes since commit b9bbe6ed63b2b9f2c9ee5cbd0f2c946a2723f4ce:
> >
> >   Linux 5.7-rc6 (2020-05-17 16:48:37 -0700)
> >
> > are available in the Git repository at:
> >
> >   git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux.git tags/riscv-for-linus-5.8-mw0
> >
> > for you to fetch changes up to 09c0533d129ce460e6214c14f744ddbac3733889:
> >
> >   soc: sifive: l2 cache: Mark l2_get_priv_group as static (2020-05-28 15:57:49 -0700)
> >
> > ----------------------------------------------------------------
> > RISC-V Patches for the 5.8 Merge Window, Part 1
> >
> > * The remainder of the code necessary to support the Kendryte K210.
> >     * Support for building device trees into the kernel, as the K210 doesn't
> >       have a bootloader that provides one.
> >     * A K210 device tree and the associated defconfig update.
> >     * Support for skipping PMP initialization on systems that trap on PMP
> >       accesses rather than treating them as WARL.
> > * Support for KGDB.
> > * Improvements to text patching.
> > * Some cleanups to the SiFive L2 cache driver.
> >
> > I may have a second part, but I wanted to get this out earlier rather than
> > later as they've been ready to go for a while now.
> Hi Palmer,
> Can you also add the run time cpu hotplug fix patch if it is not too late?
>
> https://patchwork.kernel.org/patch/11581221/
>
> Without the patch, cpu hotplug will broken for 5.8-rc1 too.

It looks like there's enough to warrant a part 2 (that fix, the vDSO stuff,
some Kconfig stuff, and the interrupt stuff).  Some of that was held back to
avoid conflicts, so it'd be easier for me if this just goes in as-is and I can
start putting together another PR based on the post-merge commit.

> > ----------------------------------------------------------------
> > Damien Le Moal (1):
> >       riscv: K210: Update defconfig
> >
> > Palmer Dabbelt (5):
> >       riscv: Allow device trees to be built into the kernel
> >       riscv: K210: Add a built-in device tree
> >       RISC-V: Skip setting up PMPs on traps
> >       soc: sifive: l2 cache: Eliminate an unsigned zero compare warning
> >       soc: sifive: l2 cache: Mark l2_get_priv_group as static
> >
> > Vincent Chen (4):
> >       kgdb: Add kgdb_has_hit_break function
> >       riscv: Add KGDB support
> >       riscv: Use the XML target descriptions to report 3 system registers
> >       riscv: Add SW single-step support for KDB
> >
> > Yash Shah (2):
> >       riscv: cacheinfo: Implement cache_get_priv_group with a generic ops structure
> >       riscv: Add support to determine no. of L2 cache way enabled
> >
> > Zong Li (3):
> >       riscv: Remove the 'riscv_' prefix of function name
> >       riscv: Use NOKPROBE_SYMBOL() instead of __krpobes annotation
> >       riscv: Use text_mutex instead of patch_lock
> >
> >  arch/riscv/Kbuild                       |   1 +
> >  arch/riscv/Kconfig                      |   7 +
> >  arch/riscv/Kconfig.socs                 |  17 +-
> >  arch/riscv/boot/dts/Makefile            |   2 +
> >  arch/riscv/boot/dts/kendryte/Makefile   |   4 +-
> >  arch/riscv/configs/nommu_k210_defconfig |   7 +-
> >  arch/riscv/include/asm/cacheinfo.h      |  15 ++
> >  arch/riscv/include/asm/gdb_xml.h        | 117 ++++++++++
> >  arch/riscv/include/asm/kdebug.h         |  12 +
> >  arch/riscv/include/asm/kgdb.h           | 112 +++++++++
> >  arch/riscv/include/asm/parse_asm.h      | 219 ++++++++++++++++++
> >  arch/riscv/include/asm/patch.h          |   4 +-
> >  arch/riscv/include/asm/soc.h            |  39 ++++
> >  arch/riscv/kernel/Makefile              |   1 +
> >  arch/riscv/kernel/cacheinfo.c           |  17 ++
> >  arch/riscv/kernel/ftrace.c              |  15 +-
> >  arch/riscv/kernel/head.S                |  11 +-
> >  arch/riscv/kernel/kgdb.c                | 390 ++++++++++++++++++++++++++++++++
> >  arch/riscv/kernel/patch.c               |  46 ++--
> >  arch/riscv/kernel/setup.c               |   4 +
> >  arch/riscv/kernel/soc.c                 |  27 +++
> >  arch/riscv/kernel/traps.c               |   5 +
> >  arch/riscv/kernel/vmlinux.lds.S         |   5 +
> >  arch/riscv/mm/init.c                    |   9 +
> >  drivers/soc/kendryte/k210-sysctl.c      |  12 +
> >  drivers/soc/sifive/sifive_l2_cache.c    |  40 +++-
> >  kernel/debug/debug_core.c               |  12 +
> >  27 files changed, 1119 insertions(+), 31 deletions(-)
> >  create mode 100644 arch/riscv/include/asm/cacheinfo.h
> >  create mode 100644 arch/riscv/include/asm/gdb_xml.h
> >  create mode 100644 arch/riscv/include/asm/kdebug.h
> >  create mode 100644 arch/riscv/include/asm/kgdb.h
> >  create mode 100644 arch/riscv/include/asm/parse_asm.h
> >  create mode 100644 arch/riscv/kernel/kgdb.c