Date: Mon, 05 Feb 1996 07:22:49 -0800 From: David Greenman <davidg@Root.COM> To: A JOSEPH KOSHY <koshy@india.hp.com> Cc: gjennejohn@frt.dec.com, hackers@FreeBSD.ORG Subject: Re: Willows Message-ID: <199602051522.HAA02821@Root.COM> In-Reply-To: Your message of "Mon, 05 Feb 1996 18:15:02 %2B0530." <199602051245.AA155974303@fakir.india.hp.com>
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>On this topic; do we support the P5's 1MB page size? This could reduce No, we don't support variable page sizes and we're not likely ever going to support them due to architectural constraints in the VM system (and I'm not interested in changing this because of performance considerations). >by tlb stepping). Even the accelarators which use sparse addressing >of their registers (Mach64, P9000, P9100 etc) this could be a win. Perhaps. The general decrease in performance and overall munging of the VM code to handle variable page sizes would negate any benefit, IMO. -DG David Greenman Core Team/Principal Architect, The FreeBSD Project
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