Date: Thu, 23 Aug 2001 01:54:12 +0900 From: Mitsuru IWASAKI <iwasaki@jp.FreeBSD.org> To: bde@zeta.org.au Cc: iwasaki@jp.FreeBSD.org, peter@wemm.org, arch@FreeBSD.ORG, audit@FreeBSD.ORG, kumabu@t3.rim.or.jp Subject: Re: CFR: Timing to enable CR4.PGE bit Message-ID: <20010823015412F.iwasaki@jp.FreeBSD.org> In-Reply-To: <20010822154635.P6058-100000@besplex.bde.org> References: <20010822020634P.iwasaki@jp.FreeBSD.org> <20010822154635.P6058-100000@besplex.bde.org>
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Hi, > > 3.7. TRANSLATION LOOKASIDE BUFFERS (TLBS) > > [snip] > > When the processor loads a page-directory or page-table entry for a > > global page into a TLB, the entry will remain in the TLB indefinitely. > ^^^^^^^^^^^^ > > The only way to deterministically invalidate global page entries is to > > clear the PGE flag and then invalidate the TLBs or to use the INVLPG > > instruction to invalidate individual page-directory or page-table > > entries in the TLBs. > > ---- > > I think this just means that it is hard to say how long the entries remain > in the TLB, not thatthey remain there forever. Ah, understood. Japanese version of this document said it's something like `forever' in Japanese translation for this meaning :-) This is why I worried about this too much. Sorry about that. Thanks To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-arch" in the body of the message
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