linux-kernel - Re: [PATCH] efi/libstub: "Exiting bootservices" message

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Message-ID: <CAMj1kXFg30tk6pRb_QS3gNqRBsSqWAtkO=-T=7tbNVTXByrJWA@mail.gmail.com>
Date:   Sun, 29 Aug 2021 14:53:20 +0200
From:   Ard Biesheuvel <ardb@...nel.org>
To:     Heinrich Schuchardt <heinrich.schuchardt@...onical.com>
Cc:     Atish Patra <atish.patra@....com>,
        Heinrich Schuchardt <xypron.gpk@....de>,
        linux-efi <linux-efi@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] efi/libstub: "Exiting bootservices" message

On Sun, 29 Aug 2021 at 14:50, Heinrich Schuchardt
<heinrich.schuchardt@...onical.com> wrote:
>
> The message
>
>     "Exiting boot services and installing virtual address map...\n"
>
> is even shown if we have efi=novamap on the command line or the firmware
> does not provide EFI_RT_SUPPORTED_SET_VIRTUAL_ADDRESS_MAP.
>
> To avoid confusion we should print
>
>     "Exiting boot services...\n"
>
> in this case.
>
> Signed-off-by: Heinrich Schuchardt <heinrich.schuchardt@...onical.com>

Hello Heinrich,

I agree with the analysis but I'd prefer to simply go with the shorter
string in all cases.

Thanks,
Ard.

> -
>  drivers/firmware/efi/libstub/fdt.c | 5 ++++-
>  1 file changed, 4 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/firmware/efi/libstub/fdt.c b/drivers/firmware/efi/libstub/fdt.c
> index 365c3a43a198..d871b1ac4d8b 100644
> --- a/drivers/firmware/efi/libstub/fdt.c
> +++ b/drivers/firmware/efi/libstub/fdt.c
> @@ -271,7 +271,10 @@ efi_status_t allocate_new_fdt_and_exit_boot(void *handle,
>                 return status;
>         }
>
> -       efi_info("Exiting boot services and installing virtual address map...\n");
> +       if (efi_novamap)
> +               efi_info("Exiting boot services...\n");
> +       else
> +               efi_info("Exiting boot services and installing virtual address map...\n");
>
>         map.map = &memory_map;
>         status = efi_allocate_pages(MAX_FDT_SIZE, new_fdt_addr, ULONG_MAX);
> --
> 2.30.2
>