Re: Problems with xwindows and avanti

[Philip Kendall <pak@ast.cam.ac.uk>]

On Thu, Mar 15, 2001 at 12:01:33PM +0100, Sebastian Moeller wrote:
> Hello Jean-Paul
> 
> On Thu, 15 Mar 2001, Jean-Paul Blaquiere wrote:
> 
> > I haven't applied any of these patches the other guys have mentioned either.
> > What do they do our of interest?
> 
> If I was one of the other guys, than you refer to the traps.c issue. 
> Here you see what i was talking about:

[snip patch]

> Well as you see EV4 does not have precise trapping. Without this patch
> applied any programm producing a trap will hang (while eating all
> processor time it can get). The patch is necessary to make floor() and
> ciel() work as they should (tested on jensen) with vanilla 2.2.16 to
> 2.2.18 sources.

FWIW, I just applied this patch on my AlphaStation 255/233, which has
been giving me random hangs under X. It certainly breaks xdm (it barfs
with lots of entries of

X Error of failed request:  BadAlloc (insufficient resources for operation)
  Major opcode of failed request:  45 (X_OpenFont)
  Serial number of failed request:  29
  Current serial number in output stream:  30

in /var/log/xdm.log) and some other X apps aren't looking right either.

/proc/cpuinfo for reference:

cpu                     : Alpha
cpu model               : EV45
cpu variation           : 7
cpu revision            : 0
cpu serial number       : 
system type             : Avanti
system variation        : 0
system revision         : 0
system serial number    : 
cycle frequency [Hz]    : 232018561 
timer frequency [Hz]    : 1024.00
page size [bytes]       : 8192
phys. address bits      : 34
max. addr. space #      : 63
BogoMIPS                : 456.80
kernel unaligned acc    : 0 (pc=0,va=0)
user unaligned acc      : 4 (pc=1200030f0,va=120026b0c)
platform string         : AlphaStation 255/233
cpus detected           : 1

Phil

-- 
  Philip Kendall <pak@ast.cam.ac.uk>
  http://www.srcf.ucam.org/~pak21/