Re: [PATCH?] uprobes: change uprobe_write_opcode() to modify the page directly

H. Peter Anvin
2013-12-04T16:03:04Z

On 12/04/2013 03:11 AM, Oleg Nesterov wrote:
>
> It is still not clear to me if we can simply change a single byte on
> x86 or not, but at least on powerpc we need to update 4 bytes. Perhaps
> we can conditionalize these pte games later.
>

But 4 aligned bytes can be written as a single transaction.

-hpa