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Old 07-05-2012, 03:00 PM
Daniel Kiper
 
Default xen: Always calculate max_cpus value

max_cpus is not available since 20374 changeset (Miscellaneous data
placement adjustments). It was moved to __initdata section. This section
is freed after Xen initialization. Assume that max_cpus is always
equal to XEN_HYPER_SIZE(cpumask_t) * 8.

Signed-off-by: Daniel Kiper <daniel.kiper@oracle.com>

diff -Npru crash-6.0.8.orig/xen_hyper.c crash-6.0.8/xen_hyper.c
--- crash-6.0.8.orig/xen_hyper.c 2012-06-29 16:59:18.000000000 +0200
+++ crash-6.0.8/xen_hyper.c 2012-07-05 14:52:59.000000000 +0200
@@ -1879,11 +1879,9 @@ xen_hyper_get_cpu_info(void)
uint *cpu_idx;
int i, j, cpus;

- get_symbol_data("max_cpus", sizeof(xht->max_cpus), &xht->max_cpus);
XEN_HYPER_STRUCT_SIZE_INIT(cpumask_t, "cpumask_t");
- if (XEN_HYPER_SIZE(cpumask_t) * 8 > xht->max_cpus) {
- xht->max_cpus = XEN_HYPER_SIZE(cpumask_t) * 8;
- }
+ xht->max_cpus = XEN_HYPER_SIZE(cpumask_t) * 8;
+
if (xht->cpumask) {
free(xht->cpumask);
}

--
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