Re: sg_set_page not usable for .bss?

From: Jan Engelhardt
Date: Mon Dec 01 2008 - 20:41:21 EST

On Tuesday 2008-12-02 01:14, David Miller wrote:
>> >>
>> >> Well, sysrq_password is in the .bss section, where as digest_password
>> >> is on the heap due to being kmalloc'ed. Maybe that makes a difference?
>> >> Someone more versed with the virtual memory layer might know.
>> >
>> >You can't use these interfaces on kernel image addresses.
>> >
>> Great :-) So what is the best way to use the SHA1 crypto algo
>> with in-kernel addresses?
>kmalloc and copy it there, or something like that, you just
>can't use in-kernel addresses, ever.
Yes, kmalloc is already used. But then, what sort of address
does kmalloc return, if not an address within kernelspace?
(usually >=0xc0000000 on standard i386)
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at
Please read the FAQ at