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swsuspend: possible with VIA Eden processor? Or alternatives?

DISCUSSION Wolfgang Fritz 3 participants 5 messages Jan 18, 2003 – Jan 21, 2003

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Wolfgang Fritz

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#0 lore raw

Hi,

the swsuspend mini howto says that a processor with pse/pse36 feature is required for swsupend in 2.4.

The VIA Eden processor on my EPIA ME6000 board gives:

vdr:~ # cat /proc/cpuinfo
processor : 0
vendor_id : CentaurHauls
cpu family : 6
model : 7
model name : VIA Samuel 2
stepping : 3
cpu MHz : 599.731
cache size : 64 KB
fdiv_bug : no
hlt_bug : no
f00f_bug : no
coma_bug : no
fpu : yes
fpu_exception : yes
cpuid level : 1
wp : yes
flags : fpu de tsc msr cx8 mtrr pge mmx 3dnow
bogomips : 1196.03

So I am obviously out of luck with 2.4 kernels, but what about 2.5 (the mini-howto is silent here)?

Or are there alternatives to sw suspend for fast boot in this case (preferred for 2.4 kernels as I do not have a 2.5 kernel tree and the required infrastructure up to now)

Wolfgang

#1 lore raw
Quoted 9 lines · Wolfgang Fritz

Hi,

the swsuspend mini howto says that a processor with pse/pse36 feature is required for swsupend in 2.4.

So I am obviously out of luck with 2.4 kernels, but what about 2.5 (the mini-howto is silent here)?

From include/asm-i386/suspend.h

static inline void
arch_prepare_suspend(void)

{
    if (!cpu_has_pse)
        panic("pse required");
}

There's really no requirement that you *need* PSE to be able to do suspend, but it seems no-one has stepped forward to write the necessary code to support non-PSE afaics.

Dave

Signature · 2 lines
| Dave Jones.        http://www.codemonkey.org.uk
| SuSE Labs
author
#2 lore raw
Quoted 9 lines · Dave Jones
Quoted 7 lines · Wolfgang Fritz

Hi,

the swsuspend mini howto says that a processor with pse/pse36 feature is required for swsupend in 2.4.

So I am obviously out of luck with 2.4 kernels, but what about 2.5 (the mini-howto is silent here)?

Quoted 9 lines
Quoted 1 line

From include/asm-i386/suspend.h

static inline void
arch_prepare_suspend(void)

{
    if (!cpu_has_pse)
        panic("pse required");
}

I assume this is from a 2.5 kernel (I have no source tree available here). I'll check that tomorrow in the office.

Quoted 4 lines

There's really no requirement that you *need* PSE to be able to do suspend, but it seems no-one has stepped forward to write the necessary code to support non-PSE afaics.

I don't even know what pse means :-(

Thank you

Wolfgang

Quoted 2 lines

Dave

#3 lore raw

Hi!

Quoted 15 lines
Quoted 6 lines
Quoted 1 line

the swsuspend mini howto says that a processor with pse/pse36 feature

is > required for swsupend in 2.4.

Quoted 3 lines

So I am obviously out of luck with 2.4 kernels, but what about 2.5 (the mini-howto is silent here)?

Quoted 9 lines
Quoted 1 line

From include/asm-i386/suspend.h

static inline void
arch_prepare_suspend(void)

{
   if (!cpu_has_pse)
       panic("pse required");
}
Quoted 2 lines

I assume this is from a 2.5 kernel (I have no source tree available here). I'll check that tomorrow in the office.

If it is not in 2.4.X it only means 2.4.X will randomly flip bits in memory during resume.

Quoted 5 lines
Quoted 4 lines

There's really no requirement that you *need* PSE to be able to do suspend, but it seems no-one has stepped forward to write the necessary code to support non-PSE afaics.

I don't even know what pse means :-(

4MB pages, basically.

[Hey, this is great time to learn something new!]
Pavel

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#4 lore raw
In reply to Wolfgang Fritz

Hi!

Quoted 25 lines

the swsuspend mini howto says that a processor with pse/pse36 feature is required for swsupend in 2.4.

The VIA Eden processor on my EPIA ME6000 board gives:

vdr:~ # cat /proc/cpuinfo
processor : 0
vendor_id : CentaurHauls
cpu family : 6
model : 7
model name : VIA Samuel 2
stepping : 3
cpu MHz : 599.731
cache size : 64 KB
fdiv_bug : no
hlt_bug : no
f00f_bug : no
coma_bug : no
fpu : yes
fpu_exception : yes
cpuid level : 1
wp : yes
flags : fpu de tsc msr cx8 mtrr pge mmx 3dnow
bogomips : 1196.03

Quoted 2 lines

So I am obviously out of luck with 2.4 kernels, but what about 2.5 (the mini-howto is silent here)?

Same there. With some hacking, it may be possile to fix it.
Pavel

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