Messages in this thread | | | From | David Laight <> | Subject | RE: [PATCH 1/2] futex: mark futex_detect_cmpxchg() as 'noinline' | Date | Wed, 16 Dec 2020 10:07:17 +0000 |
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From: Sam Ravnborg > Sent: 15 December 2020 19:38 > > Hi Arnd, > > On Tue, Dec 15, 2020 at 12:26:10PM +0100, Arnd Bergmann wrote: > > On Tue, Dec 15, 2020 at 7:09 AM Guo Ren <guoren@kernel.org> wrote: ... > > - Disable SMP support for sun4m/sun4d. From the historic git > > tree, it's unclear how well this ever worked, and very few machines > > of this class ever existed > Yeah, I have collection of sparc32 machines that I played around with > once. Including one sun4d that I brought from a friendly Linux fellow in > the UK. But somehow I lost interest as this is all very nice machines > but not useful for anything real work.
ICL made a few SMP sparc32 systems. I think the first ones used the original Cypress cpu running at 25MHz. (I'm fairly sure these were SMP-capable, the later 40MHz definitely were.) These were full sized VMEbus beasts. Somewhere I've got a 32MByte memory board - over a square foot of board. The memory is all 64k by 1 with all the pins on one edge and the chips vertical. Really looks as though it should glow red and be used for cooking toast. Even with 4 of those you're not going to run anything modern!
There were also some later mbus+sbus systems with dual sbus! Designed by Fujitsu.
None of these ever ran solaris.
David
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