Re: [GIT PULL] RISC-V Patches for the 5.2 Merge Window, Part 1

From: Palmer Dabbelt
Date: Wed May 15 2019 - 21:52:36 EST

On Wed, 15 May 2019 12:08:36 PDT (-0700), atish.patra@xxxxxxx wrote:
On 5/15/19 10:40 AM, Palmer Dabbelt wrote:
The following changes since commit 085b7755808aa11f78ab9377257e1dad2e6fa4bb:

Linux 5.1-rc6 (2019-04-21 10:45:57 -0700)

are available in the Git repository at:

git://git.kernel.org/pub/scm/linux/kernel/git/palmer/riscv-linux.git tags/riscv-for-linus-5.2-mw0

for you to fetch changes up to e23fc917f04ffac8c156fdb4ee8b56f3867fa50b:

RISC-V: Avoid using invalid intermediate translations (2019-05-08 15:06:18 -0700)

----------------------------------------------------------------
RISC-V Patches for the 5.2 Merge Window, Part 1

This patch set contains an assortment of RISC-V related patches that I'd
like to target for the 5.2 merge window. Most of the patches are
cleanups, but there are a handful of user-visible changes:

* The nosmp and nr_cpus command-line arguments are now supported, which
work like normal.
* The SBI console no longer installs itself as a preferred console, we
rely on standard mechanisms (/chosen, command-line, hueristics)
instead.
* sfence_remove_sfence_vma{,_asid} now pass their arguments along to the
SBI call.
* Modules now support BUG().
* A missing sfence.vma during boot has been added. This bug only
manifests during boot.

I've only tested this on QEMU again, as I didn't have time to get things
running on the Unleashed. The latest master from this morning merges in
cleanly and passes the tests as well.

----------------------------------------------------------------
Anup Patel (4):
RISC-V: Use tabs to align macro values in asm/csr.h
RISC-V: Add interrupt related SCAUSE defines in asm/csr.h
RISC-V: Access CSRs using CSR numbers
tty: Don't force RISCV SBI console as preferred console

Atish Patra (4):
RISC-V: Add RISC-V specific arch_match_cpu_phys_id
RISC-V: Implement nosmp commandline option.
RISC-V: Support nr_cpus command line option.
RISC-V: Fix minor checkpatch issues.

Christoph Hellwig (11):
riscv: use asm-generic/extable.h
riscv: turn mm_segment_t into a struct
riscv: remove unreachable big endian code
riscv: remove CONFIG_RISCV_ISA_A
riscv: clear all pending interrupts when booting
riscv: simplify the stack pointer setup in head.S
riscv: cleanup the parse_dtb calling conventions
riscv: remove unreachable !HAVE_FUNCTION_GRAPH_RET_ADDR_PTR code
riscv: remove duplicate macros from ptrace.h
riscv: print the unexpected interrupt cause
riscv: call pm_power_off from machine_halt / machine_power_off

Gary Guo (3):
riscv: move flush_icache_{all,mm} to cacheflush.c
riscv: move switch_mm to its own file
riscv: fix sbi_remote_sfence_vma{,_asid}.

Guo Ren (1):
riscv/signal: Fixup additional syscall restarting

Nick Desaulniers (1):
riscv: vdso: drop unnecessary cc-ldoption

Palmer Dabbelt (1):
RISC-V: Avoid using invalid intermediate translations

Vincent Chen (3):
riscv: support trap-based WARN()
riscv: Add the support for c.ebreak check in is_valid_bugaddr()
riscv: Support BUG() in kernel module

arch/riscv/Kconfig | 6 +-
arch/riscv/Makefile | 5 +-
arch/riscv/include/asm/Kbuild | 1 +
arch/riscv/include/asm/bug.h | 35 ++++++----
arch/riscv/include/asm/cacheflush.h | 2 +-
arch/riscv/include/asm/csr.h | 123 ++++++++++++++++++++++-------------
arch/riscv/include/asm/elf.h | 6 --
arch/riscv/include/asm/futex.h | 13 ----
arch/riscv/include/asm/irqflags.h | 10 +--
arch/riscv/include/asm/mmu_context.h | 59 +----------------
arch/riscv/include/asm/ptrace.h | 21 ++----
arch/riscv/include/asm/sbi.h | 19 ++++--
arch/riscv/include/asm/thread_info.h | 4 +-
arch/riscv/include/asm/uaccess.h | 28 +++-----
arch/riscv/kernel/asm-offsets.c | 3 -
arch/riscv/kernel/cpu.c | 3 +-
arch/riscv/kernel/entry.S | 22 +++----
arch/riscv/kernel/head.S | 33 ++++++----
arch/riscv/kernel/irq.c | 19 ++----
arch/riscv/kernel/perf_event.c | 4 +-
arch/riscv/kernel/reset.c | 15 +++--
arch/riscv/kernel/setup.c | 6 +-
arch/riscv/kernel/signal.c | 6 ++
arch/riscv/kernel/smp.c | 61 +++--------------
arch/riscv/kernel/smpboot. | 0
arch/riscv/kernel/smpboot.c | 22 ++++++-
arch/riscv/kernel/stacktrace.c | 14 ++--
arch/riscv/kernel/traps.c | 30 ++++++---
arch/riscv/kernel/vdso/Makefile | 2 +-
arch/riscv/mm/Makefile | 1 +
arch/riscv/mm/cacheflush.c | 61 +++++++++++++++++
arch/riscv/mm/context.c | 69 ++++++++++++++++++++
arch/riscv/mm/fault.c | 6 +-
drivers/tty/hvc/hvc_riscv_sbi.c | 1 -
34 files changed, 390 insertions(+), 320 deletions(-)
create mode 100644 arch/riscv/kernel/smpboot.

I think "smpboot." got added as a typo because of commit (RISC-V:
Support nr_cpus command line option.).

Can you please update the PR directly or should I send a fixup patch?

OK. It looks like I dropped the L2 patches, which I was going to submit as
another PR. Since I have to do that anyway, I think it's best to just drop
this one.

Linus: I'm not sure how to tag this PR as a mistake, so I'm going to just send
another one. If this gets merged then I'll handle the follow-on.


Regards,
Atish
create mode 100644 arch/riscv/mm/context.c

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