swsuspend: possible with VIA Eden processor? Or alternatives?

swsuspend: possible with VIA Eden processor? Or alternatives?

[Wolfgang Fritz]

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

Re: swsuspend: possible with VIA Eden processor? Or alternatives?

[Pavel Machek]

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)?

Same there. With some hacking, it may be possile to fix it.
								Pavel
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Re: swsuspend: possible with VIA Eden processor? Or alternatives?

[Dave Jones]

On Sat, Jan 18, 2003 at 06:14:04PM +0100, Wolfgang Fritz wrote:
 > 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

-- 
| Dave Jones.        http://www.codemonkey.org.uk
| SuSE Labs

Re: swsuspend: possible with VIA Eden processor? Or alternatives?

[Wolfgang Fritz]

Dave Jones wrote:
> On Sat, Jan 18, 2003 at 06:14:04PM +0100, Wolfgang Fritz wrote:
>  > 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");
> }
> 
I assume this is from a 2.5 kernel (I have no source tree available 
here). I'll check that tomorrow in the office.

> 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

> 		Dave
> 

Re: swsuspend: possible with VIA Eden processor? Or alternatives?

[Pavel Machek]

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");
> >}
> >
> 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.

> >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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