[GIT PULL] RISC-V Patches for the 6.16 Merge Window, Part 1
Alexandre Ghiti
alex at ghiti.fr
Thu May 29 22:48:20 PDT 2025
On 5/29/25 17:26, Palmer Dabbelt wrote:
> On Tue, 13 May 2025 12:49:26 PDT (-0700), alex at ghiti.fr wrote:
>> Hi Palmer,
>>
>> On 09/05/2025 10:28, Alexandre Ghiti wrote:
>>> The following changes since commit
>>> 9c32cda43eb78f78c73aee4aa344b777714e259b:
>>>
>>> Linux 6.15-rc3 (2025-04-20 13:43:47 -0700)
>>>
>>> are available in the Git repository at:
>>>
>>> git://git.kernel.org/pub/scm/linux/kernel/git/alexghiti/linux
>>> tags/riscv-mw1-6.16-rc1
>>>
>>> for you to fetch changes up to
>>> 135452d0c6114619fb954eaf9496210b5be0701d:
>>>
>>> riscv: Improve Kconfig help for RISCV_ISA_V_PREEMPTIVE (2025-05-09
>>> 06:35:10 +0000)
>>>
>>> ----------------------------------------------------------------
>>> riscv patches for 6.16-rc1
>>>
>>> * Implement atomic patching support for ftrace which finally allows
>>> to get rid of stop_machine()
>>> * Support for user_access_begin() to avoid toggling the SUM bit at
>>> each userspace access, improving the performance of our user copies
>>> * Support for kexec_file_load() syscall
>>> * Improve module loading time by changing the algorithm that counts
>>> the number of plt/got entries in a module
>>> * Zicbop is now used in the kernel to prefetch instructions
>>>
>>> ----------------------------------------------------------------
>>> Alexandre Ghiti (8):
>>> riscv: Add support for PUD THP
>>> Merge patch series "riscv: uaccess: optimisations"
>>> riscv: Introduce Zicbop instructions
>>> riscv: Add support for Zicbop
>>> Merge patch series "riscv: ftrace: atmoic patching and preempt
>>> improvements"
>>> Merge patch series "riscv: kexec_file: Support loading Image
>>> binary file"
>>> riscv: hwprobe: export Zabha extension
>>> Merge patch series "riscv: Add Zicbop & prefetchw support"
>>>
>>> Andy Chiu (11):
>>> riscv: ftrace: support fastcc in Clang for WITH_ARGS
>>> riscv: ftrace factor out code defined by !WITH_ARG
>>> riscv: ftrace: align patchable functions to 4 Byte boundary
>>> kernel: ftrace: export ftrace_sync_ipi
>>> riscv: ftrace: prepare ftrace for atomic code patching
>>> riscv: ftrace: do not use stop_machine to update code
>>> riscv: vector: Support calling schedule() for preemptible Vector
>>> riscv: add a data fence for CMODX in the kernel mode
>>> riscv: ftrace: support PREEMPT
>>> riscv: ftrace: support direct call using call_ops
>>> riscv: Documentation: add a description about dynamic ftrace
>>>
>>> Atish Patra (1):
>>> MAINTAINERS: Update Atish's email address
>>>
>>> Ben Dooks (1):
>>> riscv: save the SR_SUM status over switches
>>>
>>> Guo Ren (2):
>>> riscv: Add ARCH_HAS_PREFETCH[W] support with Zicbop
>>> riscv: xchg: Prefetch the destination word for sc.w
>>>
>>> Haibo Xu (1):
>>> perf symbols: Ignore mapping symbols on riscv
>>>
>>> Jisheng Zhang (4):
>>> riscv: implement user_access_begin() and families
>>> riscv: uaccess: use input constraints for ptr of __put_user()
>>> riscv: uaccess: use 'asm goto' for put_user()
>>> riscv: uaccess: use 'asm_goto_output' for get_user()
>>>
>>> Miquel Sabaté Solà (1):
>>> riscv: Improve Kconfig help for RISCV_ISA_V_PREEMPTIVE
>>>
>>> Puranjay Mohan (1):
>>> riscv: Implement HAVE_DYNAMIC_FTRACE_WITH_CALL_OPS
>>>
>>> Samuel Holland (1):
>>> riscv: module: Optimize PLT/GOT entry counting
>>>
>>> Song Shuai (2):
>>> riscv: kexec_file: Split the loading of kernel and others
>>> riscv: kexec_file: Support loading Image binary file
>>>
>>> Tiezhu Yang (1):
>>> riscv: Make regs_irqs_disabled() more clear
>>>
>>> Yao Zi (1):
>>> riscv/kexec_file: Fix comment in purgatory relocator
>>>
>>> 谢致邦 (XIE Zhibang) (1):
>>> RISC-V: Kconfig: Fix help text of CMDLINE_EXTEND
>>>
>>> .mailmap | 3 +-
>>> Documentation/arch/riscv/cmodx.rst | 46 +++-
>>> Documentation/arch/riscv/hwprobe.rst | 4 +
>>> MAINTAINERS | 4 +-
>>> arch/riscv/Kconfig | 36 ++-
>>> arch/riscv/Makefile | 4 +-
>>> arch/riscv/include/asm/barrier.h | 5 -
>>> arch/riscv/include/asm/cacheflush.h | 1 +
>>> arch/riscv/include/asm/cmpxchg.h | 4 +-
>>> arch/riscv/include/asm/ftrace.h | 62 ++---
>>> arch/riscv/include/asm/hwcap.h | 1 +
>>> arch/riscv/include/asm/image.h | 2 +
>>> arch/riscv/include/asm/insn-def.h | 66 ++++++
>>> arch/riscv/include/asm/kexec.h | 6 +
>>> arch/riscv/include/asm/pgtable-64.h | 5 +-
>>> arch/riscv/include/asm/pgtable.h | 97 ++++++++
>>> arch/riscv/include/asm/processor.h | 31 ++-
>>> arch/riscv/include/asm/ptrace.h | 2 +-
>>> arch/riscv/include/asm/tlbflush.h | 2 +
>>> arch/riscv/include/asm/uaccess.h | 218 ++++++++++++-----
>>> arch/riscv/include/asm/vector.h | 22 +-
>>> arch/riscv/include/uapi/asm/hwprobe.h | 1 +
>>> arch/riscv/kernel/Makefile | 2 +-
>>> arch/riscv/kernel/asm-offsets.c | 18 ++
>>> arch/riscv/kernel/cpufeature.c | 21 ++
>>> arch/riscv/kernel/elf_kexec.c | 485
>>> --------------------------------------
>>> arch/riscv/kernel/entry.S | 8 +
>>> arch/riscv/kernel/ftrace.c | 242 ++++++++++---------
>>> arch/riscv/kernel/kexec_elf.c | 144 +++++++++++
>>> arch/riscv/kernel/kexec_image.c | 96 ++++++++
>>> arch/riscv/kernel/machine_kexec_file.c | 361
>>> ++++++++++++++++++++++++++++
>>> arch/riscv/kernel/mcount-dyn.S | 117 +++++----
>>> arch/riscv/kernel/module-sections.c | 81 +++++--
>>> arch/riscv/kernel/sys_hwprobe.c | 1 +
>>> arch/riscv/mm/cacheflush.c | 29 ++-
>>> arch/riscv/mm/pgtable.c | 10 +
>>> arch/riscv/mm/tlbflush.c | 7 +
>>> include/linux/ftrace.h | 2 +
>>> kernel/trace/ftrace.c | 2 +-
>>> tools/perf/util/symbol-elf.c | 6 +
>>> 40 files changed, 1470 insertions(+), 784 deletions(-)
>>> delete mode 100644 arch/riscv/kernel/elf_kexec.c
>>> create mode 100644 arch/riscv/kernel/kexec_elf.c
>>> create mode 100644 arch/riscv/kernel/kexec_image.c
>>>
>>>
>>> _______________________________________________
>>> linux-riscv mailing list
>>> linux-riscv at lists.infradead.org
>>> http://lists.infradead.org/mailman/listinfo/linux-riscv
>>
>>
>> kernel test robot reported warnings
>> (https://lore.kernel.org/oe-kbuild-all/202505122357.aPWWHCbX-lkp@intel.com/)
>> that the following diff fixes, can you squash that into commit
>> ("riscv: uaccess: use 'asm_goto_output' for get_user()")?
>>
>> diff --git a/arch/riscv/include/asm/uaccess.h
>> b/arch/riscv/include/asm/uaccess.h
>> index 87d01168f80af..76c278dd2439f 100644
>> --- a/arch/riscv/include/asm/uaccess.h
>> +++ b/arch/riscv/include/asm/uaccess.h
>> @@ -127,6 +127,7 @@ do { \
>>
>> #ifdef CONFIG_CC_HAS_ASM_GOTO_OUTPUT
>> #define __get_user_8(x, ptr, label) \
>> +do { \
>> u32 __user *__ptr = (u32 __user *)(ptr); \
>> u32 __lo, __hi; \
>> asm_goto_output( \
>> @@ -141,7 +142,7 @@ do { \
>> : : label); \
>> (x) = (__typeof__(x))((__typeof__((x) - (x)))( \
>> (((u64)__hi << 32) | __lo))); \
>> -
>> +} while (0)
>> #else /* !CONFIG_CC_HAS_ASM_GOTO_OUTPUT */
>> #define __get_user_8(x, ptr, label) \
>> do { \
>
> I did, but I'm getting a PLT in my VDSO. A rebase is pointing to my
> merge, so not sure if I just screwed something up with the "git rebase
> -ir" or if something else is broken...
That's because you somehow have this commit in your branch "RISC-V:
vDSO: Wire up getrandom() vDSO implementation". I sent a fixed version
of this patch in the second PR.
Thanks,
Alex
>>
>>
>> Thanks,
>>
>> Alex
>>
>>
>> _______________________________________________
>> linux-riscv mailing list
>> linux-riscv at lists.infradead.org
>> http://lists.infradead.org/mailman/listinfo/linux-riscv
>
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