Re: [PATCH v2 2/3] softmmu/physmem: Remove the ifdef __linux__ around the pagesize functions

[Claudio Imbrenda]

On Wed, 10 Aug 2022 14:57:19 +0200
Thomas Huth <thuth@redhat.com> wrote:

> Now that host_memory_backend_pagesize() is not depending on the hugetlb
> memory path handling anymore, we can also remove the #ifdef and the
> TOCTTOU comment from the calling functions - the code should now work
> equally well on all host architectures.
> 
> Signed-off-by: Thomas Huth <thuth@redhat.com>

Reviewed-by: Claudio Imbrenda <imbrenda@linux.ibm.com>

> ---
>  softmmu/physmem.c | 17 -----------------
>  1 file changed, 17 deletions(-)
> 
> diff --git a/softmmu/physmem.c b/softmmu/physmem.c
> index dc3c3e5f2e..50231bab30 100644
> --- a/softmmu/physmem.c
> +++ b/softmmu/physmem.c
> @@ -1331,13 +1331,6 @@ GString *ram_block_format(void)
>      return buf;
>  }
>  
> -#ifdef __linux__
> -/*
> - * FIXME TOCTTOU: this iterates over memory backends' mem-path, which
> - * may or may not name the same files / on the same filesystem now as
> - * when we actually open and map them.  Iterate over the file
> - * descriptors instead, and use qemu_fd_getpagesize().
> - */
>  static int find_min_backend_pagesize(Object *obj, void *opaque)
>  {
>      long *hpsize_min = opaque;
> @@ -1391,16 +1384,6 @@ long qemu_maxrampagesize(void)
>      object_child_foreach(memdev_root, find_max_backend_pagesize, &pagesize);
>      return pagesize;
>  }
> -#else
> -long qemu_minrampagesize(void)
> -{
> -    return qemu_real_host_page_size();
> -}
> -long qemu_maxrampagesize(void)
> -{
> -    return qemu_real_host_page_size();
> -}
> -#endif
>  
>  #ifdef CONFIG_POSIX
>  static int64_t get_file_size(int fd)