Re: [PATCH v4 21/28] rust: alloc: remove `GlobalAlloc` and `krealloc_aligned`

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On 05.08.24 17:19, Danilo Krummrich wrote:
> Now that we have all the `Allocator`s and the kernel `Box` and `Vec`
> implementations in place, remove `GlobalAlloc` and `krealloc_aligned`.

When I try to compile this patch, then I get this error:

      UPD     include/generated/utsversion.h
      CC      init/version-timestamp.o
      KSYMS   .tmp_vmlinux0.kallsyms.S
      AS      .tmp_vmlinux0.kallsyms.o
      LD      .tmp_vmlinux1
    ld.lld: error: undefined symbol: __rust_realloc
    >>> referenced by usercopy_64.c
    >>>               vmlinux.o:(alloc::raw_vec::finish_grow::<alloc::alloc::Global>)
    
    ld.lld: error: undefined symbol: __rust_alloc
    >>> referenced by usercopy_64.c
    >>>               vmlinux.o:(alloc::raw_vec::finish_grow::<alloc::alloc::Global>)
    make[2]: *** [scripts/Makefile.vmlinux:34: vmlinux] Error 1

So maybe the `#[global_allocator]` needs to stay until we remove the
`alloc` dependency?

---
Cheers,
Benno

> Signed-off-by: Danilo Krummrich <dakr@xxxxxxxxxx>
> ---
>  rust/kernel/alloc/allocator.rs | 63 ++--------------------------------
>  1 file changed, 2 insertions(+), 61 deletions(-)






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