Re: [Xen-ia64-devel] PATCH: increase MAX_VIRT_CPUS to 64

[Masaki Kanno <kanno.masaki@xxxxxxxxxxxxxx>]

Hi Tristan,

Good work. I applied your patch and my following patch and tested the 
xen/ia64. As a result, the xen/ia64 ran on 16 cpus.

Best regards,
 Kan

diff -r 2133fb78dba3 xen/include/asm-ia64/config.h
--- a/xen/include/asm-ia64/config.h     Wed Apr  5 12:19:52 2006 -0600
+++ b/xen/include/asm-ia64/config.h     Fri Apr  7 00:46:58 2006 +0900
@@ -25,8 +25,8 @@
 
 #ifdef CONFIG_XEN_SMP
 #define CONFIG_SMP 1
-#define NR_CPUS 8
-#define CONFIG_NR_CPUS 8
+#define NR_CPUS 64
+#define CONFIG_NR_CPUS 64
 #else
 #undef CONFIG_SMP
 #define NR_CPUS 1

# xm info
host                   : tiger156
release                : 2.6.16-xen
version                : #1 SMP Fri Apr 7 00:34:47 JST 2006
machine                : ia64
nr_cpus                : 16
nr_nodes               : 1
sockets_per_node       : 8
cores_per_socket       : 1
threads_per_core       : 2
cpu_mhz                : 0
hw_caps                : 
00000000:00000000:00000000:00000000:00000000:00000000:00000000:00000000:
total_memory           : 2
free_memory            : 1164
xen_major              : 3
xen_minor              : 0
xen_extra              : -unstable
xen_caps               : xen-3.0-ia64 hvm-3.0-ia64
platform_params        : virt_start=0xf000000000000000
xen_changeset          : Wed Apr  5 12:19:52 2006 -0600 9492:2133fb78dba3
cc_compiler            : gcc バージョン 3.4.4 20050721 (Red Hat 3.4.4-2)
cc_compile_by          : root
cc_compile_domain      : 
cc_compile_date        : 2006年  4月  7日 金曜日 0

Tristan Gingold wrote:
>Hi,
>
>this patch increases MAX_VIRT_CPUS limit and adds checks.
>This is required to run Xen on more than 4 cpus.
>
>Tested by boot+halt of dom0+domU.
>
>Tristan.
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>
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