2.6.38-stable review patch. If anyone has any objections, please let us know.
------------------ From: Ryan Grimm <[email protected]> commit c1854e00727f50f7ac99e98d26ece04c087ef785 upstream. Without this, "holes" in the CPU numbering can cause us to free too many PACAs Signed-off-by: Benjamin Herrenschmidt <[email protected]> Signed-off-by: Greg Kroah-Hartman <[email protected]> --- arch/powerpc/kernel/paca.c | 2 +- arch/powerpc/kernel/setup-common.c | 3 +++ 2 files changed, 4 insertions(+), 1 deletion(-) --- a/arch/powerpc/kernel/paca.c +++ b/arch/powerpc/kernel/paca.c @@ -203,7 +203,7 @@ void __init free_unused_pacas(void) { int new_size; - new_size = PAGE_ALIGN(sizeof(struct paca_struct) * num_possible_cpus()); + new_size = PAGE_ALIGN(sizeof(struct paca_struct) * nr_cpu_ids); if (new_size >= paca_size) return; --- a/arch/powerpc/kernel/setup-common.c +++ b/arch/powerpc/kernel/setup-common.c @@ -509,6 +509,9 @@ void __init smp_setup_cpu_maps(void) */ cpu_init_thread_core_maps(nthreads); + /* Now that possible cpus are set, set nr_cpu_ids for later use */ + nr_cpu_ids = find_last_bit(cpumask_bits(cpu_possible_mask),NR_CPUS) + 1; + free_unused_pacas(); } #endif /* CONFIG_SMP */ _______________________________________________ stable mailing list [email protected] http://linux.kernel.org/mailman/listinfo/stable
