Re: [uml-devel] NPTL pthread_create() cannot work.

[Blaisorblade <blaisorblade@yahoo.it>]

On Friday 05 August 2005 09:34, Zhu Tom-a2289c wrote:
> 1.
> I still fail to use these patches on git3/4,

Hm, ok... there will be probably some trivial reject...I cannot update those 
patches right now since I haven't enough bandwidth.

Just to make sure: you got errors applying until TLS patches, right? Anyhow, 
to get the TLS changes only, you need to apply only the following 4 patches:

uml-clean-arch_switch
uml-tls-support-sc-tables
uml-add-tls-support
uml-add-tls-support-debug

They almost apply even on 2.6.12, so should apply for sure on 2.6.13-rc4.

And leave out uml-add-tls-support-flush-empty, it's still broken for now.

> so, I just made my local fix on 2.6.12-rc4.

> pthread_create works goods.
> and then find your fix patch include it, seems my fix
> is not wrong. :-)
Yes, I was probably missing some sleep. Only difference in my patches is that 
return value is set to set_tls_entry return value (and this matches with 
i386).

Does the system boots ok in that config, including sshd and apps like MySQL / 
Apache / Java ? With the previous version of the patches, no TLS data would 
work for sure... and sshd still doesn't work on my Sarge (which seems 
particularly picky - other people got success with other distros with much 
less changes).
> 2.
> in tls.c,
> there are some code looking up the tls_arry

> for (idx = GDT_ENTRY_TLS_MIN; idx < GDT_ENTRY_TLS_MAX; idx++) {
> shall we use "idx <= GDT_ENTRY_TLS_MAX"?
Good catch, thanks, even if this isn't going yet to be the *final* fix (since 
we aren't likely using the last slot).
> since
> #define GDT_ENTRY_TLS_MAX 	(GDT_ENTRY_TLS_MIN + GDT_ENTRY_TLS_ENTRIES - 1)

> Thanks,
> Tom
-- 
Inform me of my mistakes, so I can keep imitating Homer Simpson's "Doh!".
Paolo Giarrusso, aka Blaisorblade (Skype ID "PaoloGiarrusso", ICQ 215621894)
http://www.user-mode-linux.org/~blaisorblade

	

	
		
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