[GIT PULL] RISC-V Patches for the 6.4 Merge Window, Part 1

From: Palmer Dabbelt
Date: Fri Apr 28 2023 - 12:09:28 EST

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The following changes since commit 1ee7fc3f4d0a93831a20d5566f203d5ad6d44de8:

RISC-V: always select RISCV_ALTERNATIVE for non-xip kernels (2023-03-29 11:48:39 -0700)

are available in the Git repository at:

git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux.git tags/riscv-for-linus-6.4-mw1

for you to fetch changes up to b09313dd2e726fe5e1fa574cd73f5e326c6030a4:

RISC-V: hwprobe: Explicity check for -1 in vdso init (2023-04-26 08:58:34 -0700)

----------------------------------------------------------------
RISC-V Patches for the 6.4 Merge Window, Part 1

* Support for runtime detection of the Svnapot extension.
* Support for Zicboz when clearing pages.
* We've moved to GENERIC_ENTRY.
* Support for !MMU on rv32 systems.
* The linear region is now mapped via huge pages.
* Support for building relocatable kernels.
* Support for the hwprobe interface.
* Various fixes and cleanups throughout the tree.

----------------------------------------------------------------
I'm definately going to have a second PR for the merge window, there's already
some fixes on the lists and there's some stragglers that I'm hoping can get
cleaned up in time.

I have two minor build issues, but otherwise this is clean. The fixes are on
the lists
<https://lore.kernel.org/all/20230428152156.22840-1-palmer@xxxxxxxxxxxx/>, but
I don't think they're directly relevant to this (and they're only manifesting
post-merge).

----------------------------------------------------------------
Alexandre Ghiti (16):
riscv: Get rid of riscv_pfn_base variable
riscv: Move the linear mapping creation in its own function
riscv: Use PUD/P4D/PGD pages for the linear mapping
riscv: Split early and final KASAN population functions
riscv: Rework kasan population functions
riscv: Move DTB_EARLY_BASE_VA to the kernel address space
riscv: Fix EFI stub usage of KASAN instrumented strcmp function
riscv: Fix ptdump when KASAN is enabled
riscv: Unconditionnally select KASAN_VMALLOC if KASAN
riscv: Prepare EFI header for relocatable kernels
riscv: Move .rela.dyn outside of init to avoid empty relocations
riscv: Introduce CONFIG_RELOCATABLE
powerpc: Move script to check relocations at compile time in scripts/
riscv: Check relocations at compile time
riscv: Use --emit-relocs in order to move .rela.dyn in init
riscv: Allow to downgrade paging mode from the command line

Andrew Jones (16):
riscv: Clarify RISCV_ALTERNATIVE help text
riscv: Rename Kconfig.erratas to Kconfig.errata
riscv: alternatives: Remove unnecessary define and unused struct
riscv: alternatives: Rename errata_id to patch_id
riscv: lib: Include hwcap.h directly
riscv: cpufeature: Drop errata_list.h and other unused includes
RISC-V: alternatives: Support patching multiple insns in assembly
RISC-V: Factor out body of riscv_init_cbom_blocksize loop
dt-bindings: riscv: Document cboz-block-size
RISC-V: Add Zicboz detection and block size parsing
RISC-V: cpufeatures: Put the upper 16 bits of patch ID to work
RISC-V: Use Zicboz in clear_page when available
RISC-V: KVM: Provide UAPI for Zicboz block size
RISC-V: KVM: Expose Zicboz to the guest
RISC-V: hwprobe: There can only be one first
RISC-V: hwprobe: Explicity check for -1 in vdso init

BjÃ¶rn TÃ¶pel (1):
riscv: entry: Save a0 prior syscall_enter_from_user_mode()

Conor Dooley (3):
RISC-V: convert new selectors of RISCV_ALTERNATIVE to dependencies
RISC-V: align ISA extension Kconfig help text with each other
dt-bindings: riscv: add sv57 mmu-type

Evan Green (7):
RISC-V: Move struct riscv_cpuinfo to new header
RISC-V: Add a syscall for HW probing
RISC-V: hwprobe: Add support for RISCV_HWPROBE_BASE_BEHAVIOR_IMA
RISC-V: hwprobe: Support probing of misaligned access performance
selftests: Test the new RISC-V hwprobe interface
RISC-V: Add hwprobe vDSO function and data
RISC-V: hwprobe: Remove __init on probe_vendor_features()

Guo Ren (3):
riscv: ptrace: Remove duplicate operation
riscv: entry: Add noinstr to prevent instrumentation inserted
riscv: entry: Convert to generic entry

Jesse Taube (1):
riscv: configs: Add nommu PHONY defconfig for RV32

Jisheng Zhang (3):
riscv: entry: Remove extra level wrappers of trace_hardirqs_{on,off}
riscv: entry: Consolidate ret_from_kernel_thread into ret_from_fork
riscv: entry: Consolidate general regs saving/restoring

Palmer Dabbelt (10):
Merge patch series "riscv, mm: detect svnapot cpu support at runtime"
Merge patch series "riscv: alternative/cpufeature related cleanups"
Merge patch series "RISC-V: Apply Zicboz to clear_page"
Merge patch series "riscv: Add GENERIC_ENTRY support"
Merge patch series "Add RISC-V 32 NOMMU support"
Merge patch series "RISC-V: Fixes for riscv_has_extension[un]likely()'s alternative dependency"
Merge patch series "RISC-V Hardware Probing User Interface"
Merge patch series "riscv: Use PUD/P4D/PGD pages for the linear mapping"
Merge patch series "RISC-V kasan rework"
Merge patch series "Introduce 64b relocatable kernel"

Qinglin Pan (3):
riscv: mm: modify pte format for Svnapot
riscv: mm: support Svnapot in hugetlb page
riscv: mm: support Svnapot in huge vmap

Song Shuai (3):
Revert "riscv: Set more data to cacheinfo"
riscv: export cpu/freq invariant to scheduler
riscv: Kconfig: enable SCHED_MC kconfig

Yimin Gu (1):
riscv: Kconfig: Allow RV32 to build with no MMU

Documentation/admin-guide/kernel-parameters.txt | 5 +-
Documentation/devicetree/bindings/riscv/cpus.yaml | 6 +
Documentation/riscv/hwprobe.rst | 86 ++++
Documentation/riscv/index.rst | 1 +
arch/powerpc/tools/relocs_check.sh | 18 +-
arch/riscv/Kconfig | 78 +++-
arch/riscv/{Kconfig.erratas => Kconfig.errata} | 0
arch/riscv/Makefile | 12 +-
arch/riscv/Makefile.postlink | 49 ++
arch/riscv/boot/Makefile | 7 +
arch/riscv/errata/sifive/errata.c | 8 +-
arch/riscv/errata/thead/errata.c | 14 +-
arch/riscv/include/asm/alternative-macros.h | 72 +--
arch/riscv/include/asm/alternative.h | 20 +-
arch/riscv/include/asm/asm-prototypes.h | 2 +
arch/riscv/include/asm/asm.h | 61 +++
arch/riscv/include/asm/cacheflush.h | 3 +-
arch/riscv/include/asm/cpufeature.h | 23 +
arch/riscv/include/asm/csr.h | 1 -
arch/riscv/include/asm/entry-common.h | 11 +
arch/riscv/include/asm/hugetlb.h | 34 +-
arch/riscv/include/asm/hwcap.h | 2 +
arch/riscv/include/asm/hwprobe.h | 13 +
arch/riscv/include/asm/insn-def.h | 4 +
arch/riscv/include/asm/page.h | 30 +-
arch/riscv/include/asm/pgtable-64.h | 34 ++
arch/riscv/include/asm/pgtable.h | 39 +-
arch/riscv/include/asm/ptrace.h | 10 +-
arch/riscv/include/asm/set_memory.h | 3 +
arch/riscv/include/asm/stacktrace.h | 5 +
arch/riscv/include/asm/syscall.h | 25 +
arch/riscv/include/asm/thread_info.h | 13 +-
arch/riscv/include/asm/topology.h | 21 +
arch/riscv/include/asm/vdso/data.h | 17 +
arch/riscv/include/asm/vdso/gettimeofday.h | 8 +
arch/riscv/include/asm/vmalloc.h | 61 ++-
arch/riscv/include/uapi/asm/hwprobe.h | 37 ++
arch/riscv/include/uapi/asm/kvm.h | 2 +
arch/riscv/include/uapi/asm/unistd.h | 9 +
arch/riscv/kernel/Makefile | 4 +-
arch/riscv/kernel/alternative.c | 21 +-
arch/riscv/kernel/cacheinfo.c | 66 +--
arch/riscv/kernel/compat_vdso/Makefile | 2 +-
arch/riscv/kernel/cpu.c | 10 +-
arch/riscv/kernel/cpufeature.c | 67 ++-
arch/riscv/kernel/efi-header.S | 19 +-
arch/riscv/kernel/entry.S | 321 ++-----------
arch/riscv/kernel/head.h | 1 -
arch/riscv/kernel/image-vars.h | 2 -
arch/riscv/kernel/mcount-dyn.S | 57 +--
arch/riscv/kernel/pi/Makefile | 39 ++
arch/riscv/kernel/pi/cmdline_early.c | 62 +++
arch/riscv/kernel/process.c | 5 +-
arch/riscv/kernel/ptrace.c | 44 --
arch/riscv/kernel/setup.c | 2 +-
arch/riscv/kernel/signal.c | 29 +-
arch/riscv/kernel/smpboot.c | 1 +
arch/riscv/kernel/sys_riscv.c | 230 ++++++++-
arch/riscv/kernel/trace_irq.c | 27 --
arch/riscv/kernel/trace_irq.h | 11 -
arch/riscv/kernel/traps.c | 144 +++++-
arch/riscv/kernel/vdso.c | 6 -
arch/riscv/kernel/vdso/Makefile | 4 +
arch/riscv/kernel/vdso/hwprobe.c | 52 +++
arch/riscv/kernel/vdso/sys_hwprobe.S | 15 +
arch/riscv/kernel/vdso/vdso.lds.S | 3 +
arch/riscv/kernel/vmlinux.lds.S | 35 +-
arch/riscv/kvm/vcpu.c | 11 +
arch/riscv/lib/Makefile | 1 +
arch/riscv/lib/clear_page.S | 74 +++
arch/riscv/lib/memcpy.S | 2 +
arch/riscv/lib/memmove.S | 2 +
arch/riscv/lib/strcmp.S | 3 +-
arch/riscv/lib/strlen.S | 4 +-
arch/riscv/lib/strncmp.S | 3 +-
arch/riscv/mm/Makefile | 4 +
arch/riscv/mm/cacheflush.c | 64 +--
arch/riscv/mm/fault.c | 6 +-
arch/riscv/mm/hugetlbpage.c | 301 ++++++++++++
arch/riscv/mm/init.c | 194 ++++++--
arch/riscv/mm/kasan_init.c | 516 ++++++++++++---------
arch/riscv/mm/physaddr.c | 16 +
arch/riscv/mm/ptdump.c | 24 +-
arch/riscv/tools/relocs_check.sh | 26 ++
drivers/of/fdt.c | 11 +-
scripts/relocs_check.sh | 20 +
tools/testing/selftests/Makefile | 1 +
tools/testing/selftests/riscv/Makefile | 58 +++
tools/testing/selftests/riscv/hwprobe/Makefile | 10 +
tools/testing/selftests/riscv/hwprobe/hwprobe.c | 90 ++++
.../testing/selftests/riscv/hwprobe/sys_hwprobe.S | 12 +
91 files changed, 2589 insertions(+), 987 deletions(-)
create mode 100644 Documentation/riscv/hwprobe.rst
rename arch/riscv/{Kconfig.erratas => Kconfig.errata} (100%)
create mode 100644 arch/riscv/Makefile.postlink
create mode 100644 arch/riscv/include/asm/cpufeature.h
create mode 100644 arch/riscv/include/asm/entry-common.h
create mode 100644 arch/riscv/include/asm/hwprobe.h
create mode 100644 arch/riscv/include/asm/topology.h
create mode 100644 arch/riscv/include/asm/vdso/data.h
create mode 100644 arch/riscv/include/uapi/asm/hwprobe.h
create mode 100644 arch/riscv/kernel/pi/Makefile
create mode 100644 arch/riscv/kernel/pi/cmdline_early.c
delete mode 100644 arch/riscv/kernel/trace_irq.c
delete mode 100644 arch/riscv/kernel/trace_irq.h
create mode 100644 arch/riscv/kernel/vdso/hwprobe.c
create mode 100644 arch/riscv/kernel/vdso/sys_hwprobe.S
create mode 100644 arch/riscv/lib/clear_page.S
create mode 100755 arch/riscv/tools/relocs_check.sh
create mode 100755 scripts/relocs_check.sh
create mode 100644 tools/testing/selftests/riscv/Makefile
create mode 100644 tools/testing/selftests/riscv/hwprobe/Makefile
create mode 100644 tools/testing/selftests/riscv/hwprobe/hwprobe.c
create mode 100644 tools/testing/selftests/riscv/hwprobe/sys_hwprobe.S

Next message: Kirill A . Shutemov: "Re: [PATCH v5] mm/gup: disallow GUP writing to file-backed mappings by default"
Previous message: Linus Torvalds: "Re: [GIT PULL] MM updates for 6.4-rc1"
Next in thread: Linus Torvalds: "Re: [GIT PULL] RISC-V Patches for the 6.4 Merge Window, Part 1"
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