linux-kernel - Re: [PATCH 1/1] efi/libstub: function description efi_allocate

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Date:   Sun, 16 Feb 2020 18:33:03 +0100
From:   Ard Biesheuvel <ardb@...nel.org>
To:     Heinrich Schuchardt <xypron.glpk@....de>
Cc:     linux-efi <linux-efi@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 1/1] efi/libstub: function description efi_allocate_pages()

On Sun, 16 Feb 2020 at 18:13, Heinrich Schuchardt <xypron.glpk@....de> wrote:
>
> Provide a Sphinx style function description for efi_allocate_pages().
>
> Signed-off-by: Heinrich Schuchardt <xypron.glpk@....de>

Thanks Heinrich. I will put this on the pile.

> ---
>  drivers/firmware/efi/libstub/mem.c | 16 ++++++++++++++--
>  1 file changed, 14 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/firmware/efi/libstub/mem.c b/drivers/firmware/efi/libstub/mem.c
> index 5808c8764e64..c6a784ed640f 100644
> --- a/drivers/firmware/efi/libstub/mem.c
> +++ b/drivers/firmware/efi/libstub/mem.c
> @@ -65,8 +65,20 @@ efi_status_t efi_get_memory_map(struct efi_boot_memmap *map)
>         return status;
>  }
>
> -/*
> - * Allocate at the highest possible address that is not above 'max'.
> +/**
> + * efi_allocate_pages() - Allocate memory pages
> + * @size:      minimum number of bytes to allocate
> + * @addr:      On return the address of the first allocated page. The first
> + *             allocated page has alignment EFI_ALLOC_ALIGN which is an
> + *             architecture dependent multiple of the page size.
> + * @max:       the address that the last allocated memory page shall not
> + *             exceed
> + *
> + * Allocate pages as EFI_LOADER_DATA. The allocated pages are aligned according
> + * to EFI_ALLOC_ALIGN. The last allocated page will not exceed the address
> + * given by 'max'.
> + *
> + * Return:     status code
>   */
>  efi_status_t efi_allocate_pages(unsigned long size, unsigned long *addr,
>                                 unsigned long max)
> --
> 2.25.0
>