[GIT PULL] First set of RISC-V updates for v5.5-rc1

From: Paul Walmsley
Date: Tue Nov 26 2019 - 16:13:53 EST

Linus,

The following changes since commit a99d8080aaf358d5d23581244e5da23b35e340b9:

Linux 5.4-rc6 (2019-11-03 14:07:26 -0800)

are available in the Git repository at:

git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux.git tags/riscv/for-v5.5-rc1

for you to fetch changes up to 5ba9aa56e6d3e8fddb954c2f818d1ce0525235bb:

Merge branch 'next/nommu' into for-next (2019-11-22 18:59:09 -0800)

----------------------------------------------------------------
First set of RISC-V updates for v5.5-rc1

New features:

- SECCOMP support

- nommu support

- SBI-less system support

- M-Mode support

- TLB flush optimizations

Other improvements:

- Pass the complete RISC-V ISA string supported by the CPU cores to
userspace, rather than redacting parts of it in the kernel

- Add platform DMA IP block data to the HiFive Unleashed board DT file

- Add Makefile support for BZ2, LZ4, LZMA, LZO kernel image
compression formats, in line with other architectures

Cleanups:

- Remove unnecessary PTE_PARENT_SIZE macro

- Standardize include guard naming across arch/riscv

----------------------------------------------------------------
Atish Patra (5):
RISC-V: Remove unsupported isa string info print
RISC-V: Do not invoke SBI call if cpumask is empty
RISC-V: Issue a local tlbflush if possible.
RISC-V: Issue a tlb page flush if possible
RISC-V: Add multiple compression image format.

Christoph Hellwig (10):
riscv: enter WFI in default_power_off() if SBI does not shutdown
riscv: abstract out CSR names for supervisor vs machine mode
riscv: poison SBI calls for M-mode
riscv: cleanup the default power off implementation
riscv: implement remote sfence.i using IPIs
riscv: add support for MMIO access to the timer registers
riscv: provide native clint access for M-mode
riscv: clear the instruction cache and all registers when booting
riscv: add nommu support
riscv: provide a flat image loader

Damien Le Moal (2):
riscv: don't allow selecting SBI based drivers for M-mode
riscv: read the hart ID from mhartid on boot

David Abdurachmanov (1):
riscv: add support for SECCOMP and SECCOMP_FILTER

Green Wan (1):
riscv: dts: add support for PDMA device of HiFive Unleashed Rev A00

Paul Walmsley (6):
riscv: separate MMIO functions into their own header file
Merge branch 'next/seccomp' into for-next
Merge branch 'next/isa-string' into for-next
Merge branch 'next/tlb-opt' into for-next
Merge branch 'next/misc' into for-next
Merge branch 'next/nommu' into for-next

Zong Li (2):
riscv: Use PMD_SIZE to replace PTE_PARENT_SIZE
riscv: clean up the macro format in each header file

arch/riscv/Kconfig | 50 ++++++--
arch/riscv/Makefile | 13 +-
arch/riscv/boot/Makefile | 19 ++-
arch/riscv/boot/dts/sifive/fu540-c000.dtsi | 7 ++
arch/riscv/boot/loader.S | 8 ++
arch/riscv/boot/loader.lds.S | 16 +++
arch/riscv/configs/nommu_virt_defconfig | 78 ++++++++++++
arch/riscv/include/asm/asm-prototypes.h | 1 +
arch/riscv/include/asm/cache.h | 8 ++
arch/riscv/include/asm/clint.h | 39 ++++++
arch/riscv/include/asm/csr.h | 74 ++++++++++--
arch/riscv/include/asm/current.h | 6 +-
arch/riscv/include/asm/elf.h | 4 +-
arch/riscv/include/asm/fixmap.h | 2 +
arch/riscv/include/asm/ftrace.h | 5 +
arch/riscv/include/asm/futex.h | 12 +-
arch/riscv/include/asm/hwcap.h | 7 +-
arch/riscv/include/asm/image.h | 6 +-
arch/riscv/include/asm/io.h | 149 +----------------------
arch/riscv/include/asm/irqflags.h | 12 +-
arch/riscv/include/asm/kprobes.h | 6 +-
arch/riscv/include/asm/mmio.h | 168 ++++++++++++++++++++++++++
arch/riscv/include/asm/mmiowb.h | 2 +-
arch/riscv/include/asm/mmu.h | 3 +
arch/riscv/include/asm/page.h | 10 +-
arch/riscv/include/asm/pci.h | 6 +-
arch/riscv/include/asm/pgalloc.h | 2 +
arch/riscv/include/asm/pgtable.h | 94 +++++++-------
arch/riscv/include/asm/processor.h | 2 +-
arch/riscv/include/asm/ptrace.h | 16 +--
arch/riscv/include/asm/sbi.h | 11 +-
arch/riscv/include/asm/seccomp.h | 10 ++
arch/riscv/include/asm/sparsemem.h | 6 +-
arch/riscv/include/asm/spinlock_types.h | 2 +-
arch/riscv/include/asm/switch_to.h | 10 +-
arch/riscv/include/asm/thread_info.h | 5 +-
arch/riscv/include/asm/timex.h | 19 ++-
arch/riscv/include/asm/tlbflush.h | 12 +-
arch/riscv/include/asm/uaccess.h | 4 +
arch/riscv/include/uapi/asm/elf.h | 6 +-
arch/riscv/include/uapi/asm/hwcap.h | 6 +-
arch/riscv/include/uapi/asm/ucontext.h | 6 +-
arch/riscv/kernel/Makefile | 5 +-
arch/riscv/kernel/asm-offsets.c | 8 +-
arch/riscv/kernel/clint.c | 44 +++++++
arch/riscv/kernel/cpu.c | 45 +------
arch/riscv/kernel/entry.S | 112 ++++++++++++-----
arch/riscv/kernel/fpu.S | 8 +-
arch/riscv/kernel/head.S | 112 ++++++++++++++++-
arch/riscv/kernel/irq.c | 17 +--
arch/riscv/kernel/perf_callchain.c | 2 +-
arch/riscv/kernel/process.c | 17 +--
arch/riscv/kernel/ptrace.c | 10 ++
arch/riscv/kernel/reset.c | 5 +-
arch/riscv/kernel/sbi.c | 17 +++
arch/riscv/kernel/setup.c | 2 +
arch/riscv/kernel/signal.c | 38 ++++--
arch/riscv/kernel/smp.c | 16 ++-
arch/riscv/kernel/smpboot.c | 4 +
arch/riscv/kernel/traps.c | 16 +--
arch/riscv/lib/Makefile | 11 +-
arch/riscv/lib/uaccess.S | 12 +-
arch/riscv/mm/Makefile | 3 +-
arch/riscv/mm/cacheflush.c | 26 +++-
arch/riscv/mm/context.c | 2 +
arch/riscv/mm/extable.c | 4 +-
arch/riscv/mm/fault.c | 6 +-
arch/riscv/mm/init.c | 28 +++--
arch/riscv/mm/tlbflush.c | 25 +++-
drivers/clocksource/timer-riscv.c | 31 +++--
drivers/irqchip/irq-sifive-plic.c | 11 +-
drivers/tty/hvc/Kconfig | 2 +-
drivers/tty/serial/Kconfig | 2 +-
tools/testing/selftests/seccomp/seccomp_bpf.c | 8 +-
74 files changed, 1106 insertions(+), 465 deletions(-)
create mode 100644 arch/riscv/boot/loader.S
create mode 100644 arch/riscv/boot/loader.lds.S
create mode 100644 arch/riscv/configs/nommu_virt_defconfig
create mode 100644 arch/riscv/include/asm/clint.h
create mode 100644 arch/riscv/include/asm/mmio.h
create mode 100644 arch/riscv/include/asm/seccomp.h
create mode 100644 arch/riscv/kernel/clint.c
create mode 100644 arch/riscv/kernel/sbi.c

Kernel object size difference (from v5.4-rc6):
text data bss dec hex filename
6665154 2132584 312608 9110346 8b034a vmlinux.rv64.orig
6665098 2132768 312608 9110474 8b03ca vmlinux.rv64.patched
6445414 1797616 255248 8498278 81ac66 vmlinux.rv32.orig
6445448 1797776 255248 8498472 81ad28 vmlinux.rv32.patched