Path: csiph.com!eternal-september.org!feeder.eternal-september.org!nntp.eternal-september.org!.POSTED!not-for-mail From: Tim Rentsch Newsgroups: comp.arch Subject: Re: 370 address sizes, Styles of addressing Date: Tue, 15 Sep 2026 08:46:55 -0700 Organization: A noiseless patient Spider Lines: 19 Message-ID: <86pkyev7o0.fsf@linuxsc.com> References: <1174ve6$1aljd$3@dont-email.me> <1788221556-5857@newsgrouper.org> <6a96605c.5295125@news.eternal-september.org> <178828243428.4937.12466578110806999872@media.vsta.org> <1177fdi$26ea4$1@dont-email.me> <117a9ph$37j48$1@dont-email.me> <1788400223-5857@newsgrouper.org> <117sfmo$1f6ka$2@dont-email.me> <1788996341-5857@newsgrouper.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Injection-Date: Tue, 15 Sep 2026 15:46:58 +0000 (UTC) Injection-Info: dont-email.me; logging-data="2707097"; mail-complaints-to="abuse@eternal-september.org"; posting-account="U2FsdGVkX18V7SWsw5nGs/58Twc9bUOnqgtMXJsNVh8="; posting-host="d22a44f9db2d80b4aae7023976fc11e4" User-Agent: Gnus/5.11 (Gnus v5.11) Emacs/22.4 (gnu/linux) Cancel-Lock: sha1:ztM47zbBDn/yy7Whkg1DHRPf81g= sha1:W3bx0Cbt0cJxn4ZZcelqVh+N3E8= sha256:e6lcvrmulxheO4CF7QLVU8IxNytXksbe/W4UJ33HAgA= sha1:51pgkYYR0uOpmtuZNpR5Oj1u5K0= sha256:RRZk3koB2zo5gCWcRK3P9Hc19aUucpM9/XWsCMdXUgA= Xref: csiph.com comp.arch:118040 scott@slp53.sl.home (Scott Lurndal) writes: > MitchAlsup writes: > >> Paul Clayton posted: [...] >>> I do not understand how allowing software to limit its future >>> capabilities is an architectural flaw. >> >> When SW has used TBI often enough AND those same applications >> need 63-bit (or 64-bit) virtual addresses. > > Which will likely be _NEVER_. 2^64 is a, pardon my french, > shitload of virtual memory. [...] 64 bits is a fair amount of virtual address space. That is, until it starts being cut up into lots of pieces whose sizes are not known a priori, and moreso if (some or all of) the pieces are immovable.