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Re: [Qemu-trivial] [Qemu-devel][PATCH v2] hw/i386/pc: reject to boot a w
From: |
Stefan Hajnoczi |
Subject: |
Re: [Qemu-trivial] [Qemu-devel][PATCH v2] hw/i386/pc: reject to boot a wrong header magic kernel |
Date: |
Fri, 5 Apr 2013 14:59:41 +0200 |
User-agent: |
Mutt/1.5.21 (2010-09-15) |
On Mon, Apr 01, 2013 at 09:21:57AM +0800, liguang wrote:
> if head magic is missing or wrong unexpectedly, we'd
> better to reject booting.
> e.g.
> I make a mistake to boot a vmlinuz for MIPS(which
> I think it's for x86) like this:
> qemu-system-x86_64 -kernel vmlinuz -initrd demord
> then qemu report:
> "qemu: linux kernel too old to load a ram disk"
> that's misleading.
>
> Signed-off-by: liguang <address@hidden>
> ---
> hw/i386/pc.c | 3 +++
> 1 files changed, 3 insertions(+), 0 deletions(-)
>
> diff --git a/hw/i386/pc.c b/hw/i386/pc.c
> index b1e06fa..bfbb5fe 100644
> --- a/hw/i386/pc.c
> +++ b/hw/i386/pc.c
> @@ -683,6 +683,9 @@ static void load_linux(void *fw_cfg,
> if (load_multiboot(fw_cfg, f, kernel_filename, initrd_filename,
> kernel_cmdline, kernel_size, header)) {
> return;
> + } else {
> + fprintf(stderr, "not a valid multiboot image!\n");
> + exit(1);
> }
> protocol = 0;
The point of protocol = 0 is to support old Linux kernels. If we exit
when probing load_multiboot() fails then QEMU will no longer load old
Linux kernels!
I suggest just:
fprintf(stderr, "warning: not a valid multiboot or modern kernel image\n");
Stefan
- Re: [Qemu-trivial] [Qemu-devel][PATCH v2] hw/i386/pc: reject to boot a wrong header magic kernel,
Stefan Hajnoczi <=