Re: [Qemu-devel] [PATCH 01/12] hw: Don't use hw_error() for machine initialization errors

[Thomas Huth <thuth@redhat.com>]

On 10/12/15 11:29, Markus Armbruster wrote:
> Printing CPU registers is not helpful during machine initialization.
> Moreover, these are straightforward configuration or "can get
> resources" errors, so dumping core isn't appropriate either.  Replace
> hw_error() by error_report(); exit(1).  Matches how we report these
> errors in other machine initializations.
> 
> Cc: Richard Henderson <rth@twiddle.net>
> Cc: qemu-arm@nongnu.org
> Cc: qemu-ppc@nongnu.org
> Cc: Guan Xuetao <gxt@mprc.pku.edu.cn>
> Signed-off-by: Markus Armbruster <armbru@redhat.com>
> ---
>  hw/alpha/dp264.c          | 11 ++++++-----
>  hw/arm/highbank.c         |  6 ++++--
>  hw/char/exynos4210_uart.c |  9 ++++++---
>  hw/m68k/an5206.c          |  4 +++-
>  hw/ppc/mac_newworld.c     | 11 ++++++-----
>  hw/ppc/mac_oldworld.c     | 16 +++++++++-------
>  hw/ppc/prep.c             | 10 ++++++----
>  hw/unicore32/puv3.c       | 10 +++++++---
>  8 files changed, 47 insertions(+), 30 deletions(-)
[...]
> diff --git a/hw/ppc/prep.c b/hw/ppc/prep.c
> index 5ad28f7..8f08f07 100644
> --- a/hw/ppc/prep.c
> +++ b/hw/ppc/prep.c
> @@ -33,6 +33,7 @@
>  #include "hw/pci/pci_host.h"
>  #include "hw/ppc/ppc.h"
>  #include "hw/boards.h"
> +#include "qemu/error-report.h"
>  #include "qemu/log.h"
>  #include "hw/ide.h"
>  #include "hw/loader.h"
> @@ -532,7 +533,7 @@ static void ppc_prep_init(MachineState *machine)
>          kernel_size = load_image_targphys(kernel_filename, kernel_base,
>                                            ram_size - kernel_base);
>          if (kernel_size < 0) {
> -            hw_error("qemu: could not load kernel '%s'\n", kernel_filename);
> +            error_report("could not load kernel '%s'", kernel_filename);
>              exit(1);
>          }
>          /* load initrd */
> @@ -541,8 +542,8 @@ static void ppc_prep_init(MachineState *machine)
>              initrd_size = load_image_targphys(initrd_filename, initrd_base,
>                                                ram_size - initrd_base);
>              if (initrd_size < 0) {
> -                hw_error("qemu: could not load initial ram disk '%s'\n",
> -                          initrd_filename);
> +                error_report("could not load initial ram disk '%s'",
> +                             initrd_filename);

Shouldn't you add an "exit(1)" here, too?

>              }
>          } else {
>              initrd_base = 0;

Apart from the missing exit(), the patch looks like a good idea to me.

 Thomas