Re: [Pkg-uml-pkgs] Bug#366915: [uml-devel] Re: Bug#366915: user-mode-linux: fails when host kernel is linux-image-2.6.16-1-k7

2006-05-16 Thread Mattia Dongili
On Mon, May 15, 2006 at 09:23:19PM -0400, Jeff Dike wrote:
 On Mon, May 15, 2006 at 09:55:09PM +0200, Mattia Dongili wrote:
  Does this mean that UML will run on a non-standard-vm-split _only_ if
  the host has CONFIG_VMSPLIT_2G=y ?
 
 The question is not clear.  The host will only have a nonstandard
 split if it has CONFIG_VMSPLIT_2G or equivalent enabled.
 
 Do you instead mean whether UML will run on a nonstandard split host
 if IT (not the host) has CONFIG_HOST_2G_2G (not CONFIG_VMSPLIT_2G)
 enabled?
 
 If so, the answer for now is yes.

Aah! thanks for clarifing and sorry for the confusion on my side..

 
  If so is this considered a bug or a feature? :)
 
 More a bug.  We are considering ways of detecting the host vmsplit at
 run time and adapting to it, but added back the CONFIG_HOST_2G_2G as
 an interim measure.

Thanks, will enable it in the .17 release of the debian package.

-- 
mattia
:wq!


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Re: [Pkg-uml-pkgs] Bug#366915: [uml-devel] Re: Bug#366915: user-mode-linux: fails when host kernel is linux-image-2.6.16-1-k7

2006-05-16 Thread Jeff Dike
On Tue, May 16, 2006 at 08:09:39PM +0200, Mattia Dongili wrote:
  More a bug.  We are considering ways of detecting the host vmsplit at
  run time and adapting to it, but added back the CONFIG_HOST_2G_2G as
  an interim measure.
 
 Thanks, will enable it in the .17 release of the debian package.

The option is not without cost.  It reduces the address space
available to UML processes.  Since the B000 split seems to be
Debian-specific, you might add a corresponding Debian-specific patch
to UML which defines the top of the address space to B000, rather
than A000, which CONFIG_HOST_2G_2G does.

Jeff


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Re: [Pkg-uml-pkgs] Bug#366915: [uml-devel] Re: Bug#366915: user-mode-linux: fails when host kernel is linux-image-2.6.16-1-k7

2006-05-15 Thread Jeff Dike
On Mon, May 15, 2006 at 09:55:09PM +0200, Mattia Dongili wrote:
 Does this mean that UML will run on a non-standard-vm-split _only_ if
 the host has CONFIG_VMSPLIT_2G=y ?

The question is not clear.  The host will only have a nonstandard
split if it has CONFIG_VMSPLIT_2G or equivalent enabled.

Do you instead mean whether UML will run on a nonstandard split host
if IT (not the host) has CONFIG_HOST_2G_2G (not CONFIG_VMSPLIT_2G)
enabled?

If so, the answer for now is yes.

 If so is this considered a bug or a feature? :)

More a bug.  We are considering ways of detecting the host vmsplit at
run time and adapting to it, but added back the CONFIG_HOST_2G_2G as
an interim measure.

Jeff


---
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http://sel.as-us.falkag.net/sel?cmd=lnkkid=120709bid=263057dat=121642
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