Re: [Xen-devel] [PATCH for v1.6] pc: Fix initialization of the ram_memory variable.

[Paolo Bonzini <pbonzini@xxxxxxxxxx>]

Il 16/08/2013 16:46, Anthony PERARD ha scritto:
> In some cases (Xen), it will not be initialized before to be used. This
> leads to segv.
> 
> Signed-off-by: Anthony PERARD <anthony.perard@xxxxxxxxxx>
> 
> ---
> 
> It works with this simple initialization to NULL, but would it be
> necessary (or better) to assign a proper value to this variables ?

Yeah, the right value of this variable comes from xen_ram_init (called
by xen_hvm_init).

Paolo

> ---
>  hw/i386/pc_piix.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/hw/i386/pc_piix.c b/hw/i386/pc_piix.c
> index 6e1e654..596d433 100644
> --- a/hw/i386/pc_piix.c
> +++ b/hw/i386/pc_piix.c
> @@ -86,7 +86,7 @@ static void pc_init1(MemoryRegion *system_memory,
>      BusState *idebus[MAX_IDE_BUS];
>      ISADevice *rtc_state;
>      ISADevice *floppy;
> -    MemoryRegion *ram_memory;
> +    MemoryRegion *ram_memory = NULL;
>      MemoryRegion *pci_memory;
>      MemoryRegion *rom_memory;
>      DeviceState *icc_bridge;
> 


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