linux-kernel - [GIT PULL] RISC-V Fixes for 6.11-rc7

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Message-ID: <mhng-43509d97-4d3a-449f-b4d7-74f1041daefc@palmer-ri-x1c9>
Date: Fri, 06 Sep 2024 09:21:30 -0700 (PDT)
From: Palmer Dabbelt <palmer@...osinc.com>
To: Linus Torvalds <torvalds@...ux-foundation.org>
CC:         linux-riscv@...ts.infradead.org,        linux-kernel@...r.kernel.org
Subject: [GIT PULL] RISC-V Fixes for 6.11-rc7

The following changes since commit 32d5f7add080a936e28ab4142bfeea6b06999789:

  Merge patch series "RISC-V: hwprobe: Misaligned scalar perf fix and rename" (2024-08-15 13:12:21 -0700)

are available in the Git repository at:

  git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux.git tags/riscv-for-linus-6.11-rc7

for you to fetch changes up to 1ff95eb2bebda50c4c5406caaf201e0fcb24cc8f:

  riscv: Fix RISCV_ALTERNATIVE_EARLY (2024-09-03 07:57:55 -0700)

----------------------------------------------------------------
RISC-V Fixes for 6.11-rc7

* A revert for the mmap() change that ties the allocation range to the
  hint adress, as what we tried to do ended up regressing on other
  userspace workloads.
* A fix to avoid a kernel memory leak when emulating misaligned accesses
  from userspace.
* A Kconfig fix for toolchain vector detection, which now correctly
  detects vector support on toolchains where the V extension depends on
  the M extension.
* A fix to avoid failing the linear mapping bootmem bounds check on
  NOMMU systems.
* A fix for early alternatives on relocatable kernels.

----------------------------------------------------------------
That mmap() one is particuarly embarassing, as it didn't even fix the sv39
compatibility issue we set out to fix in the first place.  We'll have a better
fix for this, but I figured it would be best to get the revert out as it'll
need to be backported and it breaks real workloads.

----------------------------------------------------------------
Alexandre Ghiti (2):
      riscv: Do not restrict memory size because of linear mapping on nommu
      riscv: Fix RISCV_ALTERNATIVE_EARLY

Anton Blanchard (1):
      riscv: Fix toolchain vector detection

Charlie Jenkins (3):
      Revert "RISC-V: mm: Document mmap changes"
      riscv: selftests: Remove mmap hint address checks
      riscv: mm: Do not restrict mmap address based on hint

Palmer Dabbelt (1):
      Merge patch series "riscv: mm: Do not restrict mmap address based on hint"

Samuel Holland (1):
      riscv: misaligned: Restrict user access to kernel memory

 Documentation/arch/riscv/vm-layout.rst           | 16 ------
 arch/riscv/Kconfig                               |  4 +-
 arch/riscv/include/asm/processor.h               | 26 +--------
 arch/riscv/include/asm/sbi.h                     | 20 ++++++-
 arch/riscv/kernel/Makefile                       |  6 ++-
 arch/riscv/kernel/sbi.c                          | 63 ----------------------
 arch/riscv/kernel/sbi_ecall.c                    | 48 +++++++++++++++++
 arch/riscv/kernel/traps_misaligned.c             |  4 +-
 arch/riscv/mm/init.c                             |  2 +-
 tools/testing/selftests/riscv/mm/mmap_bottomup.c |  2 -
 tools/testing/selftests/riscv/mm/mmap_default.c  |  2 -
 tools/testing/selftests/riscv/mm/mmap_test.h     | 67 ------------------------
 12 files changed, 79 insertions(+), 181 deletions(-)
 create mode 100644 arch/riscv/kernel/sbi_ecall.c