kexec: proc/device-tree/chosen/linux,kernel-end: No such file or directory

kexec: proc/device-tree/chosen/linux,kernel-end: No such file or directory

[Geert Uytterhoeven]

With today's kernel, I can no longer kexec any kernel on PS3:

| /proc/device-tree/chosen/linux,kernel-end: No such file or directory
| Could not get memory layout

Today's bad version: 15f7176eb1cccec0a332541285ee752b935c1c85
Yesterday's good version: 0d34fb8e93ceba7b6dad0062dbb4a0813bacd75b

Before I start bisecting (tomorrow or the day thereafter), anyone with an idea?
Thanks!

With kind regards,

Geert Uytterhoeven
Software Architect

Sony Techsoft Centre Europe
The Corporate Village · Da Vincilaan 7-D1 · B-1935 Zaventem · Belgium

Phone:    +32 (0)2 700 8453
Fax:      +32 (0)2 700 8622
E-mail:   Geert.Uytterhoeven@sonycom.com
Internet: http://www.sony-europe.com/

A division of Sony Europe (Belgium) N.V.
VAT BE 0413.825.160 · RPR Brussels
Fortis · BIC GEBABEBB · IBAN BE41293037680010

Re: kexec: proc/device-tree/chosen/linux,kernel-end: No such file or directory

[Michael Ellerman]

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On Tue, 2009-03-31 at 18:25 +0200, Geert Uytterhoeven wrote:
> With today's kernel, I can no longer kexec any kernel on PS3:
> 
> | /proc/device-tree/chosen/linux,kernel-end: No such file or directory
> | Could not get memory layout
> 
> Today's bad version: 15f7176eb1cccec0a332541285ee752b935c1c85
> Yesterday's good version: 0d34fb8e93ceba7b6dad0062dbb4a0813bacd75b
> 
> Before I start bisecting (tomorrow or the day thereafter), anyone with an idea?

Hmm, not really.

Looking at the code the only obvious way you could end up without that
property is if you didn't have a /chosen?

cheers

-- 
Michael Ellerman
OzLabs, IBM Australia Development Lab

wwweb: http://michael.ellerman.id.au
phone: +61 2 6212 1183 (tie line 70 21183)

We do not inherit the earth from our ancestors,
we borrow it from our children. - S.M.A.R.T Person

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Re: kexec: proc/device-tree/chosen/linux,kernel-end: No such file or directory

[Geoff Levand]

On 03/31/2009 04:52 PM, Michael Ellerman wrote:
> On Tue, 2009-03-31 at 18:25 +0200, Geert Uytterhoeven wrote:
>> With today's kernel, I can no longer kexec any kernel on PS3:
>> 
>> | /proc/device-tree/chosen/linux,kernel-end: No such file or directory
>> | Could not get memory layout
>> 
>> Today's bad version: 15f7176eb1cccec0a332541285ee752b935c1c85
>> Yesterday's good version: 0d34fb8e93ceba7b6dad0062dbb4a0813bacd75b
>> 
>> Before I start bisecting (tomorrow or the day thereafter), anyone with an idea?
> 
> Hmm, not really.
> 
> Looking at the code the only obvious way you could end up without that
> property is if you didn't have a /chosen?

We got one, but linux,kernel-end isn't there anymore.  Was before.

# ls /proc/device-tree/chosen/
name
# 

[PATCH] powerpc: Correct dependency of KEXEC (was: Re: kexec: proc/device-tree/chosen/linux,kernel-end: No such file or directory)

[Geert Uytterhoeven]

On Tue, 31 Mar 2009, Geert Uytterhoeven wrote:
> With today's kernel, I can no longer kexec any kernel on PS3:
> 
> | /proc/device-tree/chosen/linux,kernel-end: No such file or directory
> | Could not get memory layout
> 
> Today's bad version: 15f7176eb1cccec0a332541285ee752b935c1c85
> Yesterday's good version: 0d34fb8e93ceba7b6dad0062dbb4a0813bacd75b
> 
> Before I start bisecting (tomorrow or the day thereafter), anyone with an idea?

Subject: powerpc: Correct dependency of KEXEC

commit 28794d34ecb6815a3fa0a4256027c9b081a17c5f ("powerpc/kconfig: Kill
PPC_MULTIPLATFORM") broke KEXEC, by making it dependant on BOOK3S, while it
should be PPC_BOOK3S.

Signed-off-by: Geert Uytterhoeven <Geert.Uytterhoeven@sonycom.com>

--- a/arch/powerpc/Kconfig
+++ b/arch/powerpc/Kconfig
@@ -313,7 +313,7 @@ config ARCH_ENABLE_MEMORY_HOTREMOVE
 
 config KEXEC
 	bool "kexec system call (EXPERIMENTAL)"
-	depends on BOOK3S && EXPERIMENTAL
+	depends on PPC_BOOK3S && EXPERIMENTAL
 	help
 	  kexec is a system call that implements the ability to shutdown your
 	  current kernel, and to start another kernel.  It is like a reboot

With kind regards,

Geert Uytterhoeven
Software Architect

Sony Techsoft Centre Europe
The Corporate Village · Da Vincilaan 7-D1 · B-1935 Zaventem · Belgium

Phone:    +32 (0)2 700 8453
Fax:      +32 (0)2 700 8622
E-mail:   Geert.Uytterhoeven@sonycom.com
Internet: http://www.sony-europe.com/

A division of Sony Europe (Belgium) N.V.
VAT BE 0413.825.160 · RPR Brussels
Fortis · BIC GEBABEBB · IBAN BE41293037680010