On 4-Oct-12, at 10:07 AM, Al Viro wrote:
On Thu, Oct 04, 2012 at 09:30:16AM -0400, Carlos O'Donell wrote:
On Thu, Oct 4, 2012 at 8:57 AM, James Bottomley
<James.Bottomley@xxxxxxxxxxxxxxxxxxxxx> wrote:
Unless I'm missing something really subtle, it looks like HPUX
compat had
been very noticably broken since at least 2002. Comments?
I think it probably has. I don't believe there's anyone left with
hpux
binaries actually checking it.
Was the HPUX support ever completed?
I had HPUX/Linux dual-boot on one of my systems and I was never able
to run an HPUX binary correctly.
Someone with the time and inclination is all that is missing to
cleanup the rotten HPUX bits.
There is no need to keep any of it around, that's what version
control is for.
FWIW, parisc seems to be the last architecture to keep such thing -
sparc
and mips had dropped SunOS/Solaris/IRIX compat, iBCS* is long-dead
(and hadn't
been in mainline kernel anyway). Alpha might still be able to run
some OSF
binaries, but there the situation is different - no alternative
syscall
entry codepath, Linux just uses the same ABI and shares syscall
numbers
where possible...
I believe the HP-UX support should be removed.
I think it unlikely that anyone will complete the HP-UX
implementation. For example,
HP-UX has a 64-bit context for 32-bit applications when running a wide
PA2.0
kernel. Linux only has a 32-bit context. As a result, it's not
possible to exploit the 64-bit
registers and instructions in Linux. We also don't have a 64-bit
linux port, so 64-bit HP-UX
support is impossible. There are quite a few other issues.
Dave
--
John David Anglin dave.anglin@xxxxxxxx
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