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Message-ID: <mhng-d12081f2-1ff7-4f68-b320-f3aa5c458365@palmer-ri-x1c9>
Date: Fri, 01 Sep 2023 07:41:21 -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 Patches for the 6.6 Merge Window, Part 1
The following changes since commit 06c2afb862f9da8dc5efa4b6076a0e48c3fbaaa5:
Linux 6.5-rc1 (2023-07-09 13:53:13 -0700)
are available in the Git repository at:
git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux.git tags/riscv-for-linus-6.6-mw1
for you to fetch changes up to 89775a27ff6d0396b44de0d6f44dcbc25221fdda:
lib/Kconfig.debug: Restrict DEBUG_INFO_SPLIT for RISC-V (2023-08-31 00:18:37 -0700)
----------------------------------------------------------------
RISC-V Patches for the 6.6 Merge Window, Part 1
* Support for the new "riscv,isa-extensions" and "riscv,isa-base" device
tree interfaces for probing extensions.
* Support for userspace access to the performance counters.
* Support for more instructions in kprobes.
* Crash kernels can be allocated above 4GiB.
* Support for KCFI.
* Support for ELFs in !MMU configurations.
* ARCH_KMALLOC_MINALIGN has been reduced to 8.
* mmap() defaults to sv48-sized addresses, with longer addresses hidden
behind a hint (similar to Arm and Intel).
* Also various fixes and cleanups.
----------------------------------------------------------------
I'll all but certainly have a second pull request, there's already some stuff
stacking up on for-next and there's a few stragglers on the lists -- mostly
stuff with dependencies on other trees, but this cycle has been a bit clunkier
than usual on my end so there's a little more floating around that usual.
I had to fix up two merge conflicts manually, only one managed to show up in
git. There's some more --cc diff in cpufeature.c, I remember having fixed that
all up on the merge side but apologies if something ended up in rerere and I
forgot about it.
Here's the one that showed up in git:
diff --cc arch/riscv/mm/init.cindex c07ff3e2c90a,156e09a1ceee..8f47a6ee353e---
a/arch/riscv/mm/init.c+++ b/arch/riscv/mm/init.c@@@ -1347,12 -1393,37 +1395,38
@@@ static void __init reserve_crashkernel( * swiotlb can work on the
crash kernel. */ crash_base =
memblock_phys_alloc_range(crash_size, PMD_SIZE, -
search_start, search_end); +
search_start, +
min(search_end, (unsigned long)(SZ_4G - 1)));
for the other the result I ended up with was
extern pgd_t early_pg_dir[PTRS_PER_PGD];
static pgd_t tmp_pg_dir[PTRS_PER_PGD] __page_aligned_bss;
static p4d_t tmp_p4d[PTRS_PER_P4D] __page_aligned_bss;
static pud_t tmp_pud[PTRS_PER_PUD] __page_aligned_bss;
though that's not showing up in the git diff, so I may have something odd going
on here.
----------------------------------------------------------------
Alexandre Ghiti (12):
perf: Fix wrong comment about default event_idx
include: riscv: Fix wrong include guard in riscv_pmu.h
riscv: Make legacy counter enum match the HW numbering
drivers: perf: Rename riscv pmu sbi driver
riscv: Prepare for user-space perf event mmap support
drivers: perf: Implement perf event mmap support in the legacy backend
drivers: perf: Implement perf event mmap support in the SBI backend
Documentation: admin-guide: Add riscv sysctl_perf_user_access
tools: lib: perf: Implement riscv mmap support
perf: tests: Adapt mmap-basic.c for riscv
riscv: Mark KASAN tmp* page tables variables as static
riscv: Move create_tmp_mapping() to init sections
Björn Töpel (1):
riscv: Require FRAME_POINTER for some configurations
Charlie Jenkins (4):
RISC-V: mm: Restrict address space for sv39,sv48,sv57
RISC-V: mm: Add tests for RISC-V mm
RISC-V: mm: Update pgtable comment documentation
RISC-V: mm: Document mmap changes
Chen Jiahao (2):
riscv: kdump: Implement crashkernel=X,[high,low]
docs: kdump: Update the crashkernel description for riscv
Conor Dooley (9):
RISC-V: drop a needless check in print_isa_ext()
RISC-V: shunt isa_ext_arr to cpufeature.c
RISC-V: repurpose riscv_isa_ext array in riscv_fill_hwcap()
RISC-V: add missing single letter extension definitions
RISC-V: add single letter extensions to riscv_isa_ext
RISC-V: split riscv_fill_hwcap() in 3
RISC-V: enable extension detection from dedicated properties
RISC-V: try new extension properties in of_early_processor_hartid()
RISC-V: provide Kconfig & commandline options to control parsing "riscv,isa"
Greg Ungerer (2):
binfmt_elf_fdpic: support 64-bit systems
riscv: support the elf-fdpic binfmt loader
Guo Ren (1):
riscv: sigcontext: Correct the comment of sigreturn
Heiko Stuebner (1):
RISC-V: don't parse dt/acpi isa string to get rv32/rv64
Jisheng Zhang (4):
riscv: allow kmalloc() caches aligned to the smallest value
riscv: enable DMA_BOUNCE_UNALIGNED_KMALLOC for !dma_coherent
riscv: enable DEBUG_FORCE_FUNCTION_ALIGN_64B
riscv: support PREEMPT_DYNAMIC with static keys
Justin Stitt (1):
RISC-V: cpu: refactor deprecated strncpy
Nam Cao (4):
riscv: kprobes: simulate c.j instruction
riscv: kprobes: simulate c.jr and c.jalr instructions
riscv: kprobes: simulate c.beqz and c.bnez
riscv: remove redundant mv instructions
Nathan Chancellor (1):
lib/Kconfig.debug: Restrict DEBUG_INFO_SPLIT for RISC-V
Palmer Dabbelt (9):
RISC-V: Provide a more helpful error message on invalid ISA strings
Merge patch series "RISC-V: Probe DT extension support using riscv,isa-extensions & riscv,isa-base"
Merge patch series "riscv: Allow userspace to directly access perf counters"
Merge patch series "riscv: kprobes: simulate some instructions"
Merge patch series "support allocating crashkernel above 4G explicitly on riscv"
Merge patch series "riscv: KCFI support"
Merge patch series "riscv: support ELF format binaries in nommu mode"
Merge patch series "riscv: Reduce ARCH_KMALLOC_MINALIGN to 8"
Merge patch series "RISC-V: mm: Make SV48 the default address space"
Sami Tolvanen (6):
riscv: Implement syscall wrappers
riscv: Add types to indirectly called assembly functions
riscv: Add ftrace_stub_graph
riscv: Add CFI error handling
riscv/purgatory: Disable CFI
riscv: Allow CONFIG_CFI_CLANG to be selected
Ye Xingchen (1):
riscv: mm: use bitmap_zero() API
Yuan Tan (1):
riscv: alternatives: fix a typo in comment
Documentation/admin-guide/kernel-parameters.txt | 22 +-
Documentation/admin-guide/sysctl/kernel.rst | 27 +-
Documentation/riscv/vm-layout.rst | 22 +
arch/riscv/Kconfig | 24 +
arch/riscv/Makefile | 3 -
arch/riscv/include/asm/alternative-macros.h | 2 +-
arch/riscv/include/asm/cache.h | 14 +
arch/riscv/include/asm/cacheflush.h | 2 +
arch/riscv/include/asm/cfi.h | 22 +
arch/riscv/include/asm/elf.h | 13 +-
arch/riscv/include/asm/hwcap.h | 17 +-
arch/riscv/include/asm/insn.h | 10 +
arch/riscv/include/asm/mmu.h | 4 +
arch/riscv/include/asm/pgtable.h | 33 +-
arch/riscv/include/asm/processor.h | 52 +-
arch/riscv/include/asm/syscall.h | 5 +-
arch/riscv/include/asm/syscall_wrapper.h | 87 ++++
arch/riscv/include/uapi/asm/ptrace.h | 5 +
arch/riscv/include/uapi/asm/sigcontext.h | 2 +-
arch/riscv/kernel/Makefile | 2 +
arch/riscv/kernel/cfi.c | 77 +++
arch/riscv/kernel/compat_syscall_table.c | 8 +-
arch/riscv/kernel/cpu.c | 181 +++----
arch/riscv/kernel/cpufeature.c | 521 ++++++++++++++-------
arch/riscv/kernel/head.S | 6 +-
arch/riscv/kernel/mcount.S | 9 +-
arch/riscv/kernel/probes/decode-insn.c | 11 +-
arch/riscv/kernel/probes/simulate-insn.c | 105 +++++
arch/riscv/kernel/probes/simulate-insn.h | 5 +
arch/riscv/kernel/setup.c | 6 +
arch/riscv/kernel/suspend_entry.S | 5 +-
arch/riscv/kernel/sys_riscv.c | 6 +
arch/riscv/kernel/syscall_table.c | 8 +-
arch/riscv/kernel/traps.c | 4 +-
arch/riscv/mm/context.c | 2 +-
arch/riscv/mm/dma-noncoherent.c | 8 +
arch/riscv/mm/init.c | 93 +++-
arch/riscv/mm/kasan_init.c | 8 +-
arch/riscv/purgatory/Makefile | 4 +
drivers/perf/riscv_pmu.c | 113 +++++
drivers/perf/riscv_pmu_legacy.c | 28 +-
drivers/perf/riscv_pmu_sbi.c | 196 +++++++-
fs/Kconfig.binfmt | 2 +-
fs/binfmt_elf_fdpic.c | 38 +-
include/asm-generic/preempt.h | 14 +-
include/linux/elf-fdpic.h | 14 +-
include/linux/perf/riscv_pmu.h | 12 +-
include/linux/perf_event.h | 3 +-
include/uapi/linux/elf-fdpic.h | 15 +
lib/Kconfig.debug | 7 +-
tools/lib/perf/mmap.c | 66 +++
tools/perf/tests/mmap-basic.c | 6 +-
tools/testing/selftests/riscv/Makefile | 2 +-
tools/testing/selftests/riscv/mm/.gitignore | 2 +
tools/testing/selftests/riscv/mm/Makefile | 15 +
.../selftests/riscv/mm/testcases/mmap_bottomup.c | 35 ++
.../selftests/riscv/mm/testcases/mmap_default.c | 35 ++
.../selftests/riscv/mm/testcases/mmap_test.h | 64 +++
.../selftests/riscv/mm/testcases/run_mmap.sh | 12 +
59 files changed, 1707 insertions(+), 407 deletions(-)
create mode 100644 arch/riscv/include/asm/cfi.h
create mode 100644 arch/riscv/include/asm/syscall_wrapper.h
create mode 100644 arch/riscv/kernel/cfi.c
create mode 100644 tools/testing/selftests/riscv/mm/.gitignore
create mode 100644 tools/testing/selftests/riscv/mm/Makefile
create mode 100644 tools/testing/selftests/riscv/mm/testcases/mmap_bottomup.c
create mode 100644 tools/testing/selftests/riscv/mm/testcases/mmap_default.c
create mode 100644 tools/testing/selftests/riscv/mm/testcases/mmap_test.h
create mode 100755 tools/testing/selftests/riscv/mm/testcases/run_mmap.sh
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