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SubjectRe: [GIT PULL] RISC-V changes for 4.16
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Adding linux-kernel, which I forgot.  Sorry!

On Wed, 07 Feb 2018 09:58:15 PST (-0800), Palmer Dabbelt wrote:
> The following changes since commit d8a5b80568a9cb66810e75b182018e9edb68e8ff:
>
> Linux 4.15 (2018-01-28 13:20:33 -0800)
>
> are available in the git repository at:
>
> ssh://git@gitolite.kernel.org/pub/scm/linux/kernel/git/palmer/riscv-linux.git tags/riscv-for-linus-4.16-merge_window
> gpg: Signature made Tue 30 Jan 2018 07:16:17 PM PST
> gpg: using RSA key 00CE76D1834960DFCE886DF8EF4CA1502CCBAB41
> gpg: issuer "palmer@dabbelt.com"
> gpg: Good signature from "Palmer Dabbelt <palmer@dabbelt.com>" [ultimate]
> gpg: aka "Palmer Dabbelt <palmer@sifive.com>" [ultimate]
>
> for you to fetch changes up to 4889dec6c87d90619cc1e8436327b91f4bb0e467:
>
> riscv: inline set_pgdir into its only caller (2018-01-30 19:16:17 -0800)
>
> ----------------------------------------------------------------
> RISC-V changes for 4.16
>
> This tag contains the fixes we'd like to target for the 4.16 merge
> window. It's not as much as I was originally hoping to do but between
> glibc, the chip, and FOSDEM there just wasn't enough time to get
> everything put together. As such, this merge window is essentially just
> going to be small changes. This includes mostly cleanups:
>
> * A build fix failure to the audit test cases. RISC-V doesn't have
> renameat because the generic syscall ABI moved to renameat2 by the
> time of our port. The syscall audit test cases don't understand this,
> so I added a trivial fix. This went through mailing list review
> during the 4.15 merge window, but nobody has picked it up so I think
> it's best to just do this here.
> * The removal of our command-line argument processing code. The
> "mem_end" stuff was broken and the rest duplicated generic device tree
> code. The generic code was already being called.
> * Some unused/redundant code has been removed, including
> __ARCH_HAVE_MMU, current_pgdir, and the initialization of init_mm.pgd.
> * SUM is disabled upon taking a trap, which means that user memory is
> protected during traps taking inside copy_{to,from}_user().
> * The sptbr CSR has been renamed to satp in C code. We haven't changed
> the assembly code in order to maintain compatibility with binutils
> 2.29, which doesn't understand the new name.
>
> Additionally, we're adding some new features:
>
> * Basic ftrace support, thanks to Alan Kao!
> * Support for ZONE_DMA32. This is necessary for all the normal reasons,
> but also to deal with a deficiency in the Xilinx PCIe controller we're
> using on our FPGA-based systems. While the ZONE_DMA32 addition should
> be sufficient for most uses, it doesn't complete the fix for the
> Xilinx controller.
> * TLB shootdowns now only target the harts where they're necessary,
> instead of applying to all harts in the system.
>
> These patches have all been sitting on our linux-next branch for a while
> now. Due to time constraints this is all I feel comfortable submitting
> during the 4.16 merge window, hopefully we'll do better next time!
>
> ----------------------------------------------------------------
> Alan Kao (1):
> riscv/ftrace: Add basic support
>
> Andrew Waterman (1):
> RISC-V: Limit the scope of TLB shootdowns
>
> Christoph Hellwig (6):
> riscv: disable SUM in the exception handler
> riscv: add ZONE_DMA32
> riscv: remove the unused current_pgdir function
> riscv: don't read back satp in paging_init
> riscv: rename sptbr to satp
> riscv: inline set_pgdir into its only caller
>
> Michael Clark (1):
> RISC-V: Remove duplicate command-line parsing logic
>
> Palmer Dabbelt (2):
> audit: Avoid build failures on systems without renameat
> RISC-V: Remove mem_end command line processing
>
> Tobias Klauser (2):
> riscv: remove unused __ARCH_HAVE_MMU define
> riscv: remove redundant unlikely()
>
> arch/riscv/Kconfig | 10 +++
> arch/riscv/include/asm/Kbuild | 1 -
> arch/riscv/include/asm/csr.h | 14 ++--
> arch/riscv/include/asm/ftrace.h | 10 +++
> arch/riscv/include/asm/mmu_context.h | 17 ++---
> arch/riscv/include/asm/tlbflush.h | 20 +++---
> arch/riscv/include/asm/unistd.h | 1 -
> arch/riscv/kernel/Makefile | 7 ++
> arch/riscv/kernel/entry.S | 9 ++-
> arch/riscv/kernel/ftrace.c | 41 +++++++++++
> arch/riscv/kernel/head.S | 6 +-
> arch/riscv/kernel/mcount.S | 126 ++++++++++++++++++++++++++++++++++
> arch/riscv/kernel/setup.c | 44 +++---------
> arch/riscv/kernel/vdso.c | 2 +-
> arch/riscv/mm/fault.c | 4 ++
> arch/riscv/mm/init.c | 12 ++--
> include/asm-generic/audit_dir_write.h | 2 +
> 17 files changed, 250 insertions(+), 76 deletions(-)
> create mode 100644 arch/riscv/include/asm/ftrace.h
> create mode 100644 arch/riscv/kernel/ftrace.c
> create mode 100644 arch/riscv/kernel/mcount.S

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