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Message-Id: <200706010014.l510ErWa022252@harpo.it.uu.se> Date: Fri, 1 Jun 2007 02:14:53 +0200 (MEST) From: Mikael Pettersson <mikpe@...uu.se> To: akpm@...ux-foundation.org, mathieu.desnoyers@...ymtl.ca Cc: linux-kernel@...r.kernel.org Subject: Re: [patch 8/9] F00F bug fixup for i386 - use conditional calls Andrew Morton wrote: > Mathieu Desnoyers <mathieu.desnoyers@...ymtl.ca> wrote: > > > * Andrew Morton (akpm@...ux-foundation.org) wrote: > > > > > > Use the faster conditional calls for F00F bug handling in do_page_fault. > > > > > > > > > > I guess this means that CONDCALL will be enabled on pretty much all i386, > > > in which case making the whole feature Kconfigurable is starting to look > > > marginal. > > > > > > Perhaps a better approach would have to made this change dependent upon > > > CONDCALL, rather than forcing it on. > > > > > > > Do you mean making X86_F00F_BUG depend on COND_CALL instead of selecting > > it ? > > yup X86_F00F_BUG needs to be enabled in all kernels capable of booting on P5 class machines, whether or not some obscure CONFIG_COND_CALL thingy is enabled or not. X86_F00F_BUG is not some optional optimisation, it's an essential workaround for a serious hardware bug. Therefore it seems select rather than depend is called for. - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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