On Sat, Mar 26, 2005 at 12:46:19PM +0100, Arjan van de Ven wrote: > On Sat, 2005-03-26 at 12:34 +0100, Willy Tarreau wrote: > > Marcelo, > > > > just another one and that's all. Zachary Amsden found an unconditional > > write to a debug register in the signal delivery path which is only > > needed when we use a breakpoint. This is a very expensive operation on > > x86, and doing it conditionnaly enhanced signal delivery speed by 33% > > for him. > > this sounds rather risky for this late in the game; heck it sounds risky > in 2.4 period. This code changed a lot in 2.6 so just a plain backport > is by no means risk free, while the effect of a wrong debug register can > even have security impact.
ok, that's a good reason. Willy - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/