Re: [PATCH] CPU hot swap for 2.4.3 + s390 support

2001-05-07 Thread Bruce Harada
> > >How far away is the capability to "teleport" processes from one machine to > > >another over the network? Think of the uptime! > > > > > > > It is here. Look at Mosix. > > No. Not for uptime. > > The "responsibility" for process completion does not get delegated. A process > will always

Re: [PATCH] CPU hot swap for 2.4.3 + s390 support

2001-05-06 Thread Jakob Østergaard
On Sun, May 06, 2001 at 10:06:42AM -0700, Ben Ford wrote: > Dwayne C. Litzenberger wrote: > > >Hey, this is cool. > > > >How far away is the capability to "teleport" processes from one machine to > >another over the network? Think of the uptime! > > > > It is here. Look at Mosix. No. Not for

Re: [PATCH] CPU hot swap for 2.4.3 + s390 support

2001-05-06 Thread Ben Ford
Dwayne C. Litzenberger wrote: >Hey, this is cool. > >How far away is the capability to "teleport" processes from one machine to >another over the network? Think of the uptime! > It is here. Look at Mosix. -- I'd rather listen to Newton than to Mundie [MS flunkie who made a speech on the evil

Re: [PATCH] CPU hot swap for 2.4.3 + s390 support

2001-05-06 Thread David Woodhouse
[EMAIL PROTECTED] said: > How do you relocate > -- pages which are mlocked without violating RT contraints? > -- pages which contain kernel pointers and might be accessed from > interrupt context? Those two are the same problem, essentially. You have to copy the page, then map it int

Re: [PATCH] CPU hot swap for 2.4.3 + s390 support

2001-05-06 Thread Stephen Beynon
On Sun, 6 May 2001, Aaron Lehmann wrote: > On Sat, May 05, 2001 at 10:43:27AM -0400, Peter Rival wrote: > > Has anyone looked into memory hot swap/hot add support? > > How do you hotswap RAM? What happens to the data that was on the > removed memory module? Dont know about the s390 - but on so

Re: [PATCH] CPU hot swap for 2.4.3 + s390 support

2001-05-06 Thread Aaron Lehmann
On Sun, May 06, 2001 at 01:15:53AM -0600, Dwayne C. Litzenberger wrote: > Hey, this is cool. > > How far away is the capability to "teleport" processes from one machine to > another over the network? Think of the uptime! http://www.mosix.org - To unsubscribe from this list: send the line "unsub

Re: [PATCH] CPU hot swap for 2.4.3 + s390 support

2001-05-06 Thread Aaron Lehmann
On Sat, May 05, 2001 at 10:43:27AM -0400, Peter Rival wrote: > Has anyone looked into memory hot swap/hot add support? How do you hotswap RAM? What happens to the data that was on the removed memory module? - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a

Re: [PATCH] CPU hot swap for 2.4.3 + s390 support

2001-05-05 Thread Dwayne C. Litzenberger
Hey, this is cool. How far away is the capability to "teleport" processes from one machine to another over the network? Think of the uptime! -- Dwayne C. Litzenberger - [EMAIL PROTECTED] PGP signature

Re: [PATCH] CPU hot swap for 2.4.3 + s390 support

2001-05-05 Thread Rik van Riel
On Sun, 6 May 2001, Chris Wedgwood wrote: > On Sat, May 05, 2001 at 11:19:09PM -0300, Rik van Riel wrote: > > This only leaves two issues, the first is device drivers and the > second is the question whether we'd want the overhead needed to > implement the (fairly easy) memory relocat

Re: [PATCH] CPU hot swap for 2.4.3 + s390 support

2001-05-05 Thread Rik van Riel
On Sun, 6 May 2001, Chris Wedgwood wrote: > On Sat, May 05, 2001 at 11:34:16AM -0500, Mitch Adair wrote: > > Wouldn't that be lot of the same issues as a "swapoff" with some > portion of that in use? (except for the kernel data case of > course...) > > No. Swapoff makes pages alloca

Re: [PATCH] CPU hot swap for 2.4.3 + s390 support

2001-05-05 Thread Rik van Riel
On Sat, 5 May 2001, Mitch Adair wrote: > Wouldn't that be lot of the same issues as a "swapoff" with some > portion of that in use? (except for the kernel data case of > course...) Basically, yes. regards, Rik -- Virtual memory is like a game you can't win; However, without VM there's truly n

Re: [PATCH] CPU hot swap for 2.4.3 + s390 support

2001-05-05 Thread Rik van Riel
On Sun, 6 May 2001, Chris Wedgwood wrote: > On Sat, May 05, 2001 at 10:43:27AM -0400, Peter Rival wrote: > > Has anyone looked into memory hot swap/hot add support? > > Adding memory probably isn't going to be too hard... but taking > existing memory off line is tricky. You have to find som

Re: [PATCH] CPU hot swap for 2.4.3 + s390 support

2001-05-05 Thread Peter Rival
Chris Wedgwood wrote: > On Sat, May 05, 2001 at 10:43:27AM -0400, Peter Rival wrote: > > Has anyone looked into memory hot swap/hot add support? > > Adding memory probably isn't going to be too hard... but taking > existing memory off line is tricky. You have to find some way of > finding all

Re: [PATCH] CPU hot swap for 2.4.3 + s390 support

2001-05-05 Thread Mitch Adair
> Adding memory probably isn't going to be too hard... but taking > existing memory off line is tricky. You have to find some way of > finding all the pages that are in use and then dealing with them > appropriately, and when some are locked or contain kernel data this > would be extremely difficu

Re: [PATCH] CPU hot swap for 2.4.3 + s390 support

2001-05-05 Thread Peter Rival
Has anyone looked into memory hot swap/hot add support? Especially with systems with Chipkill coming out, this would be great to support... - Pete Anton Blanchard wrote: > Hi, > > You can find a new version of the hot swap cpu patch at: > > http://samba.org/~anton/patches/cpu_hotswap-2.4.3-pa