Date: Sat, 4 Mar 2017 07:53:40 -0800 (PST) From: "Rodney W. Grimes" <freebsd@pdx.rh.CN85.dnsmgr.net> To: Slawa Olhovchenkov <slw@zxy.spb.ru> Cc: "Pedro F. Giffuni" <pfg@freebsd.org>, src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: Re: svn commit: r314669 - head/sys/i386/conf Message-ID: <201703041553.v24Freaq077437@pdx.rh.CN85.dnsmgr.net> In-Reply-To: <20170304153228.GM15630@zxy.spb.ru>
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> On Sat, Mar 04, 2017 at 03:04:17PM +0000, Pedro F. Giffuni wrote: > > > Author: pfg > > Date: Sat Mar 4 15:04:17 2017 > > New Revision: 314669 > > URL: https://svnweb.freebsd.org/changeset/base/314669 > > > > Log: > > Drop i486 from the default i386 GENERIC kernel configuration. > > > > 80486 production was stopped by Intel on September 2007. Dropping the 486 > > configuration option from the GENERIC kernel improves performance > > slightly. > > > > Removing I486_CPU is consistent at this time: we don't support any > > processor without a FPU and the PC-98 arch, which frequently involved i486 > > CPUs, is also gone so we don't test such platforms anymore. > > What is realy mean? > Some Via CPU is like i486 (by instruction set). > > CPU: VIA Ezra (800.04-MHz 686-class CPU) > Origin="CentaurHauls" Id=0x678 Family=0x6 Model=0x7 Stepping=8 > Features=0x803035<FPU,DE,TSC,MSR,MTRR,PGE,MMX> > AMD Features=0x80000000<3DNow!> There is also the whole 486sx family that is 486 die that they turned the FPU feature off in cause it failed functional test at die sort. -- Rod Grimes rgrimes@freebsd.org
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