On Mon, Dec 16, 2024 at 03:10:03PM +0100, Thomas Weißschuh wrote:
> The generic storage implementation provides the same features as the
> custom one. However it can be shared between architectures, making
> maintenance easier.
> 
> Co-developed-by: Nam Cao <nam...@linutronix.de>
> Signed-off-by: Nam Cao <nam...@linutronix.de>
> Signed-off-by: Thomas Weißschuh <thomas.weisssc...@linutronix.de>
> ---
>  arch/riscv/Kconfig                                 |  3 +-
>  arch/riscv/include/asm/vdso.h                      |  2 +-
>  .../include/asm/vdso/{time_data.h => arch_data.h}  |  8 +-
>  arch/riscv/include/asm/vdso/gettimeofday.h         | 14 +---
>  arch/riscv/include/asm/vdso/vsyscall.h             |  9 ---
>  arch/riscv/kernel/sys_hwprobe.c                    |  3 +-
>  arch/riscv/kernel/vdso.c                           | 90 
> +---------------------
>  arch/riscv/kernel/vdso/hwprobe.c                   |  6 +-
>  arch/riscv/kernel/vdso/vdso.lds.S                  |  7 +-
>  9 files changed, 18 insertions(+), 124 deletions(-)

Fails to build:
Patch 7/17: Test 1/12: .github/scripts/patches/tests/build_rv32_defconfig.sh
  /build/tmp.cAQOaMfDA3/arch/riscv/kernel/vdso/hwprobe.c:11:33: warning: 
declaration of 'struct riscv_hwprobe' will not be visible outside of this 
function [-Wvisibility]
  /build/tmp.cAQOaMfDA3/arch/riscv/kernel/vdso/hwprobe.c:15:41: warning: 
declaration of 'struct riscv_hwprobe' will not be visible outside of this 
function [-Wvisibility]
  /build/tmp.cAQOaMfDA3/arch/riscv/kernel/vdso/hwprobe.c:19:37: error: call to 
undeclared function '__arch_get_vdso_u_arch_data'; ISO C99 and later do not 
support implicit function declarations [-Wimplicit-function-declaration]
  /build/tmp.cAQOaMfDA3/arch/riscv/kernel/vdso/hwprobe.c:19:31: error: 
incompatible integer to pointer conversion initializing 'const struct 
vdso_arch_data *' with an expression of type 'int' [-Wint-conversion]
  /build/tmp.cAQOaMfDA3/arch/riscv/kernel/vdso/hwprobe.c:22:36: error: 
arithmetic on a pointer to an incomplete type 'struct riscv_hwprobe'
  /build/tmp.cAQOaMfDA3/arch/riscv/kernel/vdso/hwprobe.c:30:40: error: 
incomplete definition of type 'const struct vdso_arch_data'
  /build/tmp.cAQOaMfDA3/arch/riscv/kernel/vdso/hwprobe.c:31:24: error: 
incompatible pointer types passing 'struct riscv_hwprobe *' to parameter of 
type 'struct riscv_hwprobe *' [-Werror,-Wincompatible-pointer-types]
  /build/tmp.cAQOaMfDA3/arch/riscv/kernel/vdso/hwprobe.c:35:7: error: call to 
undeclared function 'riscv_hwprobe_key_is_valid'; ISO C99 and later do not 
support implicit function declarations [-Wimplicit-function-declaration]
  /build/tmp.cAQOaMfDA3/arch/riscv/kernel/vdso/hwprobe.c:35:35: error: 
incomplete definition of type 'struct riscv_hwprobe'
  /build/tmp.cAQOaMfDA3/arch/riscv/kernel/vdso/hwprobe.c:36:5: error: 
incomplete definition of type 'struct riscv_hwprobe'
  /build/tmp.cAQOaMfDA3/arch/riscv/kernel/vdso/hwprobe.c:36:18: error: 
incomplete definition of type 'const struct vdso_arch_data'
  /build/tmp.cAQOaMfDA3/arch/riscv/kernel/vdso/hwprobe.c:36:44: error: 
incomplete definition of type 'struct riscv_hwprobe'
  /build/tmp.cAQOaMfDA3/arch/riscv/kernel/vdso/hwprobe.c:39:5: error: 
incomplete definition of type 'struct riscv_hwprobe'
  /build/tmp.cAQOaMfDA3/arch/riscv/kernel/vdso/hwprobe.c:40:5: error: 
incomplete definition of type 'struct riscv_hwprobe'
  /build/tmp.cAQOaMfDA3/arch/riscv/kernel/vdso/hwprobe.c:43:4: error: 
arithmetic on a pointer to an incomplete type 'struct riscv_hwprobe'
  /build/tmp.cAQOaMfDA3/arch/riscv/kernel/vdso/hwprobe.c:49:39: warning: 
declaration of 'struct riscv_hwprobe' will not be visible outside of this 
function [-Wvisibility]
  /build/tmp.cAQOaMfDA3/arch/riscv/kernel/vdso/hwprobe.c:53:37: error: call to 
undeclared function '__arch_get_vdso_u_arch_data'; ISO C99 and later do not 
support implicit function declarations [-Wimplicit-function-declaration]
  /build/tmp.cAQOaMfDA3/arch/riscv/kernel/vdso/hwprobe.c:53:31: error: 
incompatible integer to pointer conversion initializing 'const struct 
vdso_arch_data *' with an expression of type 'int' [-Wint-conversion]
  /build/tmp.cAQOaMfDA3/arch/riscv/kernel/vdso/hwprobe.c:55:36: error: 
arithmetic on a pointer to an incomplete type 'struct riscv_hwprobe'
  /build/tmp.cAQOaMfDA3/arch/riscv/kernel/vdso/hwprobe.c:71:61: error: 
incomplete definition of type 'const struct vdso_arch_data'
  /build/tmp.cAQOaMfDA3/arch/riscv/kernel/vdso/hwprobe.c:71:29: error: use of 
undeclared identifier 'RISCV_HWPROBE_WHICH_CPUS'
  /build/tmp.cAQOaMfDA3/arch/riscv/kernel/vdso/hwprobe.c:72:24: error: 
incompatible pointer types passing 'struct riscv_hwprobe *' to parameter of 
type 'struct riscv_hwprobe *' [-Werror,-Wincompatible-pointer-types]
  fatal error: too many errors emitted, stopping now [-ferror-limit=]

Might be a clang thing, allmodconfig with clang doesn't build either.

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