something wrong with Linux on 6.2-stable/amd64

[Alexander Leidinger]

Quoting Mikhail Teterin <mi+kde at aldan.algebra.com> (Fri, 20 Jul 2007 10:13:12 -0400):

> On п'ятниця 20 липень 2007, Alexander Leidinger wrote:
> = Do you have sound output? The mmap changes result in a problem with
> = some sound stuff.
> 
> Yes, I do.
> 
> = There's a new sysctl for this, but AFAIK there's no UPDATING entry (yet):
> = ---snip---
> = New sysctl: "hw.snd.compat_linux_mmap" to allow PROT_EXEC page
> = mapping, due to recent changes in linux compatibility layer which
> = require it. All linux applications that using sound + mmap() (mostly
> = games) require this to be enabled. Disabled by default.
> = ---snip---
> 
> There must be very good reasons for breaking compatibility so...

Is improving compatibility for other use cases a reason which is good
enough?

> = This may or may not solve your problem. I don't remember changes to
> = linux_select, so this is the only thing I can up with to help you...
> 
> No,  setting hw.snd.compat_linux_mmap did not change anything. Did I have to 
> reboot or something for it to have effect?
> 
> = If it doesn't work, you have to have a look at my linux changes in
> = stable (5 or 6 in total) and binary search between them for the
> = problematic one.
> 
> Could you identify them for me, please?

http://www.freebsd.org/cgi/cvsweb.cgi/src/sys/compat/linux/?only_with_tag=RELENG_6#dirlist
http://www.freebsd.org/cgi/cvsweb.cgi/src/sys/i386/linux/?only_with_tag=RELENG_6#dirlist
http://www.freebsd.org/cgi/cvsweb.cgi/src/sys/amd64/linux32/?only_with_tag=RELENG_6#dirlist

MFC 1 is only style. MFC 2 and 4 may be a candidate. For MFC 2 I don't
see how it can affect this. MFC 5 is the mmap stuff + errno changes
(additional errno translations). MFC 4 handles also some more socket
options.

> P.S. Frankly, should not the burden of debugging be on you, actually?

You are the one with the problem at hand, and I'm the one with not
enough time ATM...

Bye,
Alexander.

-- 
The pills to be taken with meals will be the least
appetizing ones.
http://www.Leidinger.net  Alexander @ Leidinger.net: PGP ID = B0063FE7
http://www.FreeBSD.org     netchild @ FreeBSD.org  : PGP ID = 72077137