[GIT PULL] RISC-V Patches for the 6.8 Merge Window, Part 4
Palmer Dabbelt
palmer at rivosinc.com
Sat Jan 20 10:17:18 PST 2024
The following changes since commit cb51bfee7f62a8e26b694f9d84c0041b3e3ccc71:
Merge patch series "riscv: hwprobe: add Zicond, Zacas and Ztso support" (2024-01-09 20:14:51 -0800)
are available in the Git repository at:
git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux.git tags/riscv-for-linus-6.8-mw4
for you to fetch changes up to f24a70106dc1ad2a755b2d42f47cf1dcf24f0b27:
lib: checksum: Fix build with CONFIG_NET=n (2024-01-19 08:12:38 -0800)
----------------------------------------------------------------
RISC-V Patches for the 6.8 Merge Window, Part 4
This includes everything from part 2:
* Support for tuning for systems with fast misaligned accesses.
* Support for SBI-based suspend.
* Support for the new SBI debug console extension.
* The T-Head CMOs now use PA-based flushes.
* Support for enabling the V extension in kernel code.
* Optimized IP checksum routines.
* Various ftrace improvements.
* Support for archrandom, which depends on the Zkr extension.
and then also a fix for those:
* The build is no longer broken under NET=n, KUNIT=y for ports that
don't define their own ipv6 checksum.
----------------------------------------------------------------
This is essentially the same as part 3, except it doesn't have the back merge.
Thus there's a semantic merge conflict: the refactoring from f32fcbedbe92
("tty: hvc: convert to u8 and size_t") requires a change to 88ead68e764c ("tty:
Add SBI debug console support to HVC SBI driver") as we added another set of
HVC routines.
I used the following locally
diff --git a/drivers/tty/hvc/hvc_riscv_sbi.c b/drivers/tty/hvc/hvc_riscv_sbi.c
index 0abd964d380b..cede8a572594 100644
--- a/drivers/tty/hvc/hvc_riscv_sbi.c
+++ b/drivers/tty/hvc/hvc_riscv_sbi.c
@@ -45,12 +45,12 @@ static const struct hv_ops hvc_sbi_v01_ops = {
.put_chars = hvc_sbi_tty_put,
};
-static int hvc_sbi_dbcn_tty_put(uint32_t vtermno, const char *buf, int count)
+static ssize_t hvc_sbi_dbcn_tty_put(uint32_t vtermno, const u8 *buf, size_t count)
{
return sbi_debug_console_write(buf, count);
}
-static int hvc_sbi_dbcn_tty_get(uint32_t vtermno, char *buf, int count)
+static ssize_t hvc_sbi_dbcn_tty_get(uint32_t vtermno, u8 *buf, size_t count)
{
return sbi_debug_console_read(buf, count);
}
to avoid a local build failure along the lines of
CC drivers/tty/hvc/hvc_riscv_sbi.o
drivers/tty/hvc/hvc_riscv_sbi.c:59:22: error: initialization of ‘ssize_t (*)(uint32_t, const u8 *, size_t)’ {aka ‘long int (*)(unsigned int, const unsigned char *, long unsigned int)’} from incompatible pointer type ‘int (*)(uint32_t, const char *, int)’ {aka ‘int (*)(unsigned int, const char *, int)’} [-Werror=incompatible-pointer-types]
59 | .put_chars = hvc_sbi_dbcn_tty_put,
| ^~~~~~~~~~~~~~~~~~~~
drivers/tty/hvc/hvc_riscv_sbi.c:59:22: note: (near initialization for ‘hvc_sbi_dbcn_ops.put_chars’)
drivers/tty/hvc/hvc_riscv_sbi.c:60:22: error: initialization of ‘ssize_t (*)(uint32_t, u8 *, size_t)’ {aka ‘long int (*)(unsigned int, unsigned char *, long unsigned int)’} from incompatible pointer type ‘int (*)(uint32_t, char *, int)’ {aka ‘int (*)(unsigned int, char *, int)’} [-Werror=incompatible-pointer-types]
60 | .get_chars = hvc_sbi_dbcn_tty_get,
| ^~~~~~~~~~~~~~~~~~~~
drivers/tty/hvc/hvc_riscv_sbi.c:60:22: note: (near initialization for ‘hvc_sbi_dbcn_ops.get_chars’)
----------------------------------------------------------------
Alexandre Ghiti (3):
riscv: Use hugepage mappings for vmemmap
riscv: Add support for BATCHED_UNMAP_TLB_FLUSH
riscv: Fix build error on rv32 + XIP
Andrew Jones (2):
riscv: sbi: Introduce system suspend support
RISC-V: selftests: cbo: Ensure asm operands match constraints
Andy Chiu (8):
riscv: vector: make Vector always available for softirq context
riscv: sched: defer restoring Vector context for user
riscv: lib: vectorize copy_to_user/copy_from_user
riscv: fpu: drop SR_SD bit checking
riscv: vector: do not pass task_struct into riscv_v_vstate_{save,restore}()
riscv: vector: use a mask to write vstate_ctrl
riscv: vector: use kmem_cache to manage vector context
riscv: vector: allow kernel-mode Vector with preemption
Anup Patel (4):
RISC-V: Add stubs for sbi_console_putchar/getchar()
RISC-V: Add SBI debug console helper routines
tty/serial: Add RISC-V SBI debug console based earlycon
RISC-V: Enable SBI based earlycon support
Atish Patra (1):
tty: Add SBI debug console support to HVC SBI driver
Charlie Jenkins (9):
riscv: Fix module loading free order
riscv: Correctly free relocation hashtable on error
riscv: Fix relocation_hashtable size
asm-generic: Improve csum_fold
riscv: Add static key for misaligned accesses
riscv: Add checksum header
riscv: Add checksum library
kunit: Add tests for csum_ipv6_magic and ip_fast_csum
riscv: lib: Check if output in asm goto supported
Christoph Müllner (5):
tools: selftests: riscv: Fix compile warnings in hwprobe
tools: selftests: riscv: Fix compile warnings in cbo
tools: selftests: riscv: Add missing include for vector test
tools: selftests: riscv: Fix compile warnings in vector tests
tools: selftests: riscv: Fix compile warnings in mm tests
Christophe JAILLET (1):
riscv: Fix an off-by-one in get_early_cmdline()
Conor Dooley (1):
dt-bindings: riscv: permit numbers in "riscv,isa"
Daniel Henrique Barboza (1):
dt-bindings: riscv: Document cbop-block-size
Greentime Hu (2):
riscv: Add support for kernel mode vector
riscv: Add vector extension XOR implementation
Guo Ren (2):
riscv: mm: Fixup compat mode boot failure
riscv: mm: Fixup compat arch_get_mmap_end
Jisheng Zhang (4):
riscv: introduce RISCV_EFFICIENT_UNALIGNED_ACCESS
riscv: select DCACHE_WORD_ACCESS for efficient unaligned access HW
riscv: errata: thead: use riscv_nonstd_cache_ops for CMO
riscv: errata: thead: use pa based instructions for CMO
Masahiro Yamada (1):
riscv: add dependency among Image(.gz), loader(.bin), and vmlinuz.efi
Maxim Kochetkov (1):
riscv: optimize ELF relocation function in riscv
Nathan Chancellor (3):
riscv: Hoist linker relaxation disabling logic into Kconfig
riscv: Restrict DWARF5 when building with LLVM to known working versions
lib/Kconfig.debug: Update AS_HAS_NON_CONST_LEB128 comment and name
Palmer Dabbelt (11):
Merge patch series "riscv: enable EFFICIENT_UNALIGNED_ACCESS and DCACHE_WORD_ACCESS"
Merge patch series "riscv: modules: Fix module loading error handling"
Merge patch series "RISC-V SBI debug console extension support"
Merge patch series "riscv: errata: thead: use riscv_nonstd_cache_ops for CMO"
Merge patch series "tools: selftests: riscv: Fix compiler warnings"
Merge patch series "riscv: mm: Fixup & Optimize COMPAT code"
Merge patch series "riscv: support kernel-mode Vector"
Merge patch series "riscv: Add fine-tuned checksum functions"
Merge patch series "RISC-V: Disable DWARF5 with known broken LLVM versions"
Merge patch series "riscv: ftrace: Miscellaneous ftrace improvements"
lib: checksum: Fix build with CONFIG_NET=n
Samuel Holland (1):
dt-bindings: riscv: cpus: Clarify mmu-type interpretation
Samuel Ortiz (1):
RISC-V: Implement archrandom when Zkr is available
Song Shuai (4):
riscv: select FTRACE_MCOUNT_USE_PATCHABLE_FUNCTION_ENTRY
riscv: ftrace: Make function graph use ftrace directly
riscv: ftrace: Add DYNAMIC_FTRACE_WITH_DIRECT_CALLS support
samples: ftrace: Add RISC-V support for SAMPLE_FTRACE_DIRECT[_MULTI]
Xiao Wang (1):
riscv: Optimize hweight API with Zbb extension
Documentation/devicetree/bindings/riscv/cpus.yaml | 9 +-
.../devicetree/bindings/riscv/extensions.yaml | 2 +-
Documentation/features/vm/TLB/arch-support.txt | 2 +-
arch/riscv/Kconfig | 57 +++-
arch/riscv/Kconfig.errata | 1 +
arch/riscv/Makefile | 8 +-
arch/riscv/configs/defconfig | 1 +
arch/riscv/errata/thead/errata.c | 69 ++++-
arch/riscv/include/asm/arch_hweight.h | 78 +++++
arch/riscv/include/asm/archrandom.h | 72 +++++
arch/riscv/include/asm/asm-extable.h | 15 +
arch/riscv/include/asm/asm-prototypes.h | 27 ++
arch/riscv/include/asm/bitops.h | 4 +-
arch/riscv/include/asm/checksum.h | 93 ++++++
arch/riscv/include/asm/cpufeature.h | 2 +
arch/riscv/include/asm/csr.h | 9 +
arch/riscv/include/asm/entry-common.h | 17 ++
arch/riscv/include/asm/errata_list.h | 50 +---
arch/riscv/include/asm/ftrace.h | 18 +-
arch/riscv/include/asm/pgtable.h | 2 +-
arch/riscv/include/asm/processor.h | 43 ++-
arch/riscv/include/asm/sbi.h | 19 ++
arch/riscv/include/asm/simd.h | 64 ++++
arch/riscv/include/asm/switch_to.h | 3 +-
arch/riscv/include/asm/thread_info.h | 2 +
arch/riscv/include/asm/tlbbatch.h | 15 +
arch/riscv/include/asm/tlbflush.h | 8 +
arch/riscv/include/asm/vector.h | 90 +++++-
arch/riscv/include/asm/word-at-a-time.h | 27 ++
arch/riscv/include/asm/xor.h | 68 +++++
arch/riscv/kernel/Makefile | 1 +
arch/riscv/kernel/cpufeature.c | 90 +++++-
arch/riscv/kernel/entry.S | 8 +
arch/riscv/kernel/ftrace.c | 30 +-
arch/riscv/kernel/kernel_mode_vector.c | 247 ++++++++++++++++
arch/riscv/kernel/mcount-dyn.S | 198 ++++++++++---
arch/riscv/kernel/module.c | 34 ++-
arch/riscv/kernel/pi/cmdline_early.c | 3 +-
arch/riscv/kernel/process.c | 13 +-
arch/riscv/kernel/ptrace.c | 7 +-
arch/riscv/kernel/sbi.c | 66 +++++
arch/riscv/kernel/signal.c | 7 +-
arch/riscv/kernel/suspend.c | 44 +++
arch/riscv/kernel/vector.c | 53 +++-
arch/riscv/lib/Makefile | 6 +
arch/riscv/lib/csum.c | 328 +++++++++++++++++++++
arch/riscv/lib/riscv_v_helpers.c | 45 +++
arch/riscv/lib/uaccess.S | 10 +
arch/riscv/lib/uaccess_vector.S | 53 ++++
arch/riscv/lib/xor.S | 81 +++++
arch/riscv/mm/extable.c | 31 ++
arch/riscv/mm/init.c | 25 +-
arch/riscv/mm/tlbflush.c | 69 +++--
drivers/tty/hvc/Kconfig | 2 +-
drivers/tty/hvc/hvc_riscv_sbi.c | 37 ++-
drivers/tty/serial/Kconfig | 2 +-
drivers/tty/serial/earlycon-riscv-sbi.c | 27 +-
include/asm-generic/checksum.h | 6 +-
lib/Kconfig.debug | 12 +-
lib/checksum_kunit.c | 286 +++++++++++++++++-
samples/ftrace/ftrace-direct-modify.c | 35 +++
samples/ftrace/ftrace-direct-multi-modify.c | 41 +++
samples/ftrace/ftrace-direct-multi.c | 25 ++
samples/ftrace/ftrace-direct-too.c | 28 ++
samples/ftrace/ftrace-direct.c | 24 ++
tools/testing/selftests/riscv/hwprobe/cbo.c | 24 +-
tools/testing/selftests/riscv/hwprobe/hwprobe.c | 4 +-
tools/testing/selftests/riscv/mm/mmap_test.h | 3 +
.../selftests/riscv/vector/v_initval_nolibc.c | 2 +-
.../selftests/riscv/vector/vstate_exec_nolibc.c | 3 +
.../testing/selftests/riscv/vector/vstate_prctl.c | 4 +-
71 files changed, 2676 insertions(+), 213 deletions(-)
create mode 100644 arch/riscv/include/asm/arch_hweight.h
create mode 100644 arch/riscv/include/asm/archrandom.h
create mode 100644 arch/riscv/include/asm/checksum.h
create mode 100644 arch/riscv/include/asm/simd.h
create mode 100644 arch/riscv/include/asm/tlbbatch.h
create mode 100644 arch/riscv/include/asm/xor.h
create mode 100644 arch/riscv/kernel/kernel_mode_vector.c
create mode 100644 arch/riscv/lib/csum.c
create mode 100644 arch/riscv/lib/riscv_v_helpers.c
create mode 100644 arch/riscv/lib/uaccess_vector.S
create mode 100644 arch/riscv/lib/xor.S
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