Date: Fri, 10 Mar 2006 13:20:01 +0300 From: Yar Tikhiy <yar@comp.chem.msu.su> To: John Baldwin <jhb@FreeBSD.org> Cc: cvs-src@FreeBSD.org, src-committers@FreeBSD.org, cvs-all@FreeBSD.org Subject: Re: cvs commit: src/sys/i386/i386 mpapic.c Message-ID: <20060310102001.GX4474@comp.chem.msu.su> In-Reply-To: <200603091623.k29GNFf9003993@repoman.freebsd.org> References: <200603091623.k29GNFf9003993@repoman.freebsd.org>
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On Thu, Mar 09, 2006 at 04:23:15PM +0000, John Baldwin wrote: > jhb 2006-03-09 16:23:15 UTC > > FreeBSD src repository > > Modified files: (Branch: RELENG_4) > sys/i386/i386 mpapic.c > Log: > Revert the previous change. Even though Intel insists that the behavior > this change restores is wrong, it turns out the "proper" method is worse > in practice for existing machines. This is probably due to the fact that > using fixed priority with a physical broadcast destination effectively > broadcasts interrupts to all CPUs. Fixing that would require a lot more > work than just restoring the previous "incorrect" behavior and would > probably be riskier as well. > > PR: kern/94160 > Reported by: Richard Wiwatowski rjwiwat at internode dot on dot net > > Revision Changes Path > 1.37.2.9 +3 -3 src/sys/i386/i386/mpapic.c This problem cannot affect a kernel unless it has been built with "options SMP", can it? Thanks! -- Yar
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