Re: [patch 07/13] Initialize per cpu lowcores on cpu hotplug.

[Heiko Carstens]

On Wed, Feb 20, 2008 at 11:09:33AM +0100, Bastian Blank wrote:
> On Wed, Feb 20, 2008 at 10:45:52AM +0100, Heiko Carstens wrote:
> > -	copy_page(lowcore, &S390_lowcore);
> > +	memcpy(lowcore, &S390_lowcore, 512);
> 
> Okay
> 
> >  	memset((void *)lowcore + 512, 0, sizeof(*lowcore) - 512);
> 
> Not completely okay. void pointer are not allowed in arithmetic. gcc
> handles void * as char * in this case, but I think it should usualy be
> avoided.

There are many places all over the kernel that assume sizeof(void) == 1.
That's yet another gcc extension we use... but I'm going to change that
to a char * cast anyway.

Thanks for commenting!
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/