On Fri, 2013-11-29 at 15:12 +0100, Aurelien Jarno wrote: > On Fri, Nov 29, 2013 at 01:57:39PM +0000, Ben Hutchings wrote: > > On Fri, 2013-11-29 at 09:22 +0100, Aurelien Jarno wrote: > > > Some precision about the MIPS machines: > > > > > > On Thu, Nov 28, 2013 at 09:04:56PM +0100, Niels Thykier wrote: > > > > * [mips, mipsel] buildds/porterboxes run on hardware which is very old or has known defects: > > > > - mips octeon is unstable > > > > > > Better me more precise there, Octeon machines in general are very > > > stable. That said out of the three machines we have in Debian, two are > > > unstable, the other one is very stable. We never really understood why, > > > we only have remarked they have different CPU revision number. > > > > Whatever, mips has one reliable buildd which is not enough. > > Two actually with ball.d.o which is not an octeon. > > My point is to say that Octeon boxes are not unstable, but the Octeon > boxes *we have* as part of the Debian infrastructure are unstable. This > of course has to be fixed. Yes. > > > > - mipsel loongson have CPU bugs > > > > > > I see on http://release.debian.org/jessie/arch_qualify.html that it > > > concerns the "NOP implementation error" from Loongson 2F. Debian is > > > using Loongson 2E for buildds and porters machines, which are not > > > affected by this issue. > > > > They are affected by that or a very similar issue, as demonstrated by Jo > > Shields recently: http://apebox.org/wordpress/rants/545/ > > > > MUL is a MIPS32 instruction, which is not present on MIPS3 CPUs like the > Loongson 2, MULT + MFLO should be used instead. There is no CPU bug > there, it's like trying to build x86 code with SSE4 instructions, and > then saying that all x86 CPUs which do not support the SSE4 instructions > are buggy. That was only the first problem; read the whole entry. Ben. -- Ben Hutchings Usenet is essentially a HUGE group of people passing notes in class. - Rachel Kadel, `A Quick Guide to Newsgroup Etiquette'
Description: This is a digitally signed message part