Merge tag 'riscv-for-linus-6.8-mw4' of git://git.kernel.org/pub/scm/linux/kernel...

Pull more RISC-V updates from Palmer Dabbelt:

 - 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.

 - The build is no longer broken under NET=n, KUNIT=y for ports that
   don't define their own ipv6 checksum.

* tag 'riscv-for-linus-6.8-mw4' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux: (56 commits)
  lib: checksum: Fix build with CONFIG_NET=n
  riscv: lib: Check if output in asm goto supported
  riscv: Fix build error on rv32 + XIP
  riscv: optimize ELF relocation function in riscv
  RISC-V: Implement archrandom when Zkr is available
  riscv: Optimize hweight API with Zbb extension
  riscv: add dependency among Image(.gz), loader(.bin), and vmlinuz.efi
  samples: ftrace: Add RISC-V support for SAMPLE_FTRACE_DIRECT[_MULTI]
  riscv: ftrace: Add DYNAMIC_FTRACE_WITH_DIRECT_CALLS support
  riscv: ftrace: Make function graph use ftrace directly
  riscv: select FTRACE_MCOUNT_USE_PATCHABLE_FUNCTION_ENTRY
  lib/Kconfig.debug: Update AS_HAS_NON_CONST_LEB128 comment and name
  riscv: Restrict DWARF5 when building with LLVM to known working versions
  riscv: Hoist linker relaxation disabling logic into Kconfig
  kunit: Add tests for csum_ipv6_magic and ip_fast_csum
  riscv: Add checksum library
  riscv: Add checksum header
  riscv: Add static key for misaligned accesses
  asm-generic: Improve csum_fold
  RISC-V: selftests: cbo: Ensure asm operands match constraints
  ...

diff --cc arch/riscv/Kconfig
Simple merge

diff --cc arch/riscv/Kconfig.errata
Simple merge

diff --cc arch/riscv/include/asm/pgtable.h
Simple merge

diff --cc arch/riscv/include/asm/sbi.h
index b6f898c56940a2d3626d90436185279d01f288b8,6dd41ff3c66e2502ce68dd9369dc87b9573f2b04..6e68f8dff76bc6d09f7a5e555e54474587021ed9
--- 1/arch/riscv/include/asm/sbi.h
--- 2/arch/riscv/include/asm/sbi.h
+++ b/arch/riscv/include/asm/sbi.h
@@@ -29,9 -29,9 +29,10 @@@ enum sbi_ext_id 
        SBI_EXT_RFENCE = 0x52464E43,
        SBI_EXT_HSM = 0x48534D,
        SBI_EXT_SRST = 0x53525354,
+       SBI_EXT_SUSP = 0x53555350,
        SBI_EXT_PMU = 0x504D55,
        SBI_EXT_DBCN = 0x4442434E,
 +      SBI_EXT_STA = 0x535441,
  
        /* Experimentals extensions must lie within this range */
        SBI_EXT_EXPERIMENTAL_START = 0x08000000,

diff --cc arch/riscv/include/asm/tlbflush.h
Simple merge

diff --cc arch/riscv/kernel/Makefile
Simple merge

diff --cc arch/riscv/mm/tlbflush.c
Simple merge

diff --cc drivers/tty/hvc/hvc_riscv_sbi.c
index a72591279f865845b6508db585b72880ff578e6d,2f3571f17ecd466cee0346f28c5dd53103287864..cede8a57259492bfc15fa8ff36286371c8c6139d
--- 1/drivers/tty/hvc/hvc_riscv_sbi.c
--- 2/drivers/tty/hvc/hvc_riscv_sbi.c
+++ b/drivers/tty/hvc/hvc_riscv_sbi.c
@@@ -45,15 -44,38 +45,38 @@@ static const struct hv_ops hvc_sbi_v01_
        .put_chars = hvc_sbi_tty_put,
  };
  
- static int __init hvc_sbi_init(void)
 -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 PTR_ERR_OR_ZERO(hvc_alloc(0, 0, &hvc_sbi_ops, 16));
+       return sbi_debug_console_write(buf, count);
  }
- device_initcall(hvc_sbi_init);
  
- static int __init hvc_sbi_console_init(void)
 -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)
  {
-       hvc_instantiate(0, 0, &hvc_sbi_ops);
+       return sbi_debug_console_read(buf, count);
+ }
+ 
+ static const struct hv_ops hvc_sbi_dbcn_ops = {
+       .put_chars = hvc_sbi_dbcn_tty_put,
+       .get_chars = hvc_sbi_dbcn_tty_get,
+ };
+ 
+ static int __init hvc_sbi_init(void)
+ {
+       int err;
+ 
+       if (sbi_debug_console_available) {
+               err = PTR_ERR_OR_ZERO(hvc_alloc(0, 0, &hvc_sbi_dbcn_ops, 256));
+               if (err)
+                       return err;
+               hvc_instantiate(0, 0, &hvc_sbi_dbcn_ops);
+       } else if (IS_ENABLED(CONFIG_RISCV_SBI_V01)) {
+               err = PTR_ERR_OR_ZERO(hvc_alloc(0, 0, &hvc_sbi_v01_ops, 256));
+               if (err)
+                       return err;
+               hvc_instantiate(0, 0, &hvc_sbi_v01_ops);
+       } else {
+               return -ENODEV;
+       }
  
        return 0;
  }

diff --cc drivers/tty/serial/Kconfig
Simple merge

diff --cc lib/Kconfig.debug
Simple merge