From mboxrd@z Thu Jan 1 00:00:00 1970 From: dhanhurley@rocketmail.com (DHAN HURLEY) Date: Thu, 11 Oct 2018 14:21:35 +0000 Subject: [9fans] ..... UNSUBSCRIBE_HELP NEEDED In-Reply-To: References: <3C62CE67D1FF8260C5450B3D0AE7AA1A@felloff.net> <20181011023054.2E6AC156E40C@mail.bitblocks.com> Message-ID: <1527683720.8686236.1539267695077@mail.yahoo.com> Topicbox-Message-UUID: ec099cd6-ead9-11e9-9d60-3106f5b1d025 Hi Steven, Could you please tell me how to subscribe from this EMAIL LIST. I don't have the time,or my own computer,to find the Webpage. Today i have nearly 20 messages from the PLAN 9 LIST. I am also getting a lot from the HAIKU LIST. Many thanks, Dhan Hurley DIASPORA COMMUNITY,MY PROFILE PAGE :- IRISH, MUSICIAN, POET, PHYSICS, "FREE-ENERGY", LINUX PROFI, ALTERNATIVE SYSTEMS, GEOPOLYMERS, ALTERNATIVE HEALTH-FARMING-MATERIALS, MYSTIC, etc. https://despora.de/people/6d39a7e04a610132027a42cdb1fcde73 From: Steven Stallion To: Fans of the OS Plan 9 from Bell Labs <9fans at 9fans.net> Sent: Thursday, October 11, 2018 5:21 AM Subject: Re: [9fans] zero copy & 9p (was Re: PDP11 (Was: Re: what heavy negativity!) On Wed, Oct 10, 2018 at 9:32 PM Bakul Shah wrote: > Steve wrote "1:1 mapping of the virtual kernel address space such > that something like zero-copy could be possible" > > Not sure what he meant. For zero copy you need to *directly* > write to the memory allocated to a process. 1:1 mapping is > really not needed. Ugh. I could have worded that better. That was a (very) clumsy attempt at stating that the kernel would have to support remapping the user buffer to virtual kernel space. Fortunately Plan 9 doesn't page out kernel memory, so pinning wouldn't be required. Cheers, Steve -------------- next part -------------- An HTML attachment was scrubbed... URL: