Robert Watson wrote:
On Tue, 9 Mar 2010, John Baldwin wrote:
Log:
MFC 183525: Bump MAXCPU to 32 now that 32 CPU x86 systems exist.
So in two months or so (according to the trade rags)
intel brings out a system with 1024 'cpus'
(8 cpu chips, x 8 cpus per chip x 16 threads per cpu).
We need to do a bit of quick thinking to work out how we handle this..
I think the only systems that can run on this well are Virtualization
micro kernels (e.g. ESX) with the idea of running multiple kernels on
different cpu chips.
Hmmm. I'd be a bit surprised if this doesn't cause ABI issues for
management/crashdump analysis tools, and KBI problems for kernel
modules, although it being 12:30am I'm having trouble thinking of
specific instances currently.
Robert N M Watson
Computer Laboratory
University of Cambridge
Modified:
stable/7/sys/amd64/include/param.h
stable/7/sys/i386/include/param.h
Directory Properties:
stable/7/sys/ (props changed)
stable/7/sys/cddl/contrib/opensolaris/ (props changed)
stable/7/sys/contrib/dev/acpica/ (props changed)
stable/7/sys/contrib/pf/ (props changed)
Modified: stable/7/sys/amd64/include/param.h
==============================================================================
--- stable/7/sys/amd64/include/param.h Tue Mar 9 21:16:36 2010
(r204930)
+++ stable/7/sys/amd64/include/param.h Tue Mar 9 22:10:11 2010
(r204931)
@@ -71,7 +71,7 @@
#endif
#if defined(SMP) || defined(KLD_MODULE)
-#define MAXCPU 16
+#define MAXCPU 32
#else
#define MAXCPU 1
#endif
Modified: stable/7/sys/i386/include/param.h
==============================================================================
--- stable/7/sys/i386/include/param.h Tue Mar 9 21:16:36 2010
(r204930)
+++ stable/7/sys/i386/include/param.h Tue Mar 9 22:10:11 2010
(r204931)
@@ -66,7 +66,7 @@
#define MID_MACHINE MID_I386
#if defined(SMP) || defined(KLD_MODULE)
-#define MAXCPU 16
+#define MAXCPU 32
#else
#define MAXCPU 1
#endif /* SMP */
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