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

Oleg Nesterov
2013-12-04T16:49:16Z

On 12/04, H. Peter Anvin wrote:
>
> 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.

Ah yes, this is true.

Oleg.