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| author | Tony Luck <tony.luck@intel.com> | 2008-07-01 02:03:14 +0400 |
|---|---|---|
| committer | Tony Luck <tony.luck@intel.com> | 2008-07-01 02:03:14 +0400 |
| commit | dd4f0888f8b42a97c93a66617a4f9acaff3089d6 (patch) | |
| tree | f0442424a2b73f01a4ff198e943d08a4df4d0d23 | |
| parent | 543cf4cb3fe6f6cae3651ba918b9c56200b257d0 (diff) | |
| download | linux-dd4f0888f8b42a97c93a66617a4f9acaff3089d6.tar.xz | |
[IA64] Bugfix for system with 32 cpus
On a system where there are no hot pluggable cpus "additional_cpus"
is still set to -1 at the point where we call per_cpu_scan_finalize().
If we didn't find an SRAT table and so pick the default "32" for the
number of cpus, when we get to:
high_cpu = min(high_cpu + reserve_cpus, NR_CPUS);
we will end up initializing for just 31 cpus ... and so we will
die horribly when bringing up cpu#32.
Problem introduced by: 2c6e6db41f01b6b4eb98809350827c9678996698
"Minimize per_cpu reservations."
Acked-by: Robin Holt <holt@sgi.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
| -rw-r--r-- | arch/ia64/kernel/setup.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/arch/ia64/kernel/setup.c b/arch/ia64/kernel/setup.c index 4ae15c8c2488..632cda8f2e76 100644 --- a/arch/ia64/kernel/setup.c +++ b/arch/ia64/kernel/setup.c @@ -547,7 +547,8 @@ setup_arch (char **cmdline_p) # ifdef CONFIG_ACPI_NUMA acpi_numa_init(); per_cpu_scan_finalize((cpus_weight(early_cpu_possible_map) == 0 ? - 32 : cpus_weight(early_cpu_possible_map)), additional_cpus); + 32 : cpus_weight(early_cpu_possible_map)), + additional_cpus > 0 ? additional_cpus : 0); # endif #else # ifdef CONFIG_SMP |