[9fans] ..... UNSUBSCRIBE_HELP NEEDED

[dhanhurley@rocketmail.com (DHAN HURLEY)]

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

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      From: Steven Stallion <sstallion at gmail.com>
 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 <bakul at bitblocks.com> 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



   
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