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| author | Matt Evans <matt@ozlabs.org> | 2010-06-07 21:38:18 +0000 |
|---|---|---|
| committer | Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2010-06-15 15:02:33 +1000 |
| commit | b636f1379eefe6eba931deaa386605bc7ac623e7 (patch) | |
| tree | 482289c45853b5f86f264dd8f98b0f70c94fa4d5 /arch/powerpc | |
| parent | 65cf840ff4b63852d34d577d559978ccfc554a6c (diff) | |
| download | blackbird-op-linux-b636f1379eefe6eba931deaa386605bc7ac623e7.tar.gz blackbird-op-linux-b636f1379eefe6eba931deaa386605bc7ac623e7.zip | |
powerpc/kexec: Wait for online/possible CPUs only.
kexec_perpare_cpus_wait() iterates i through NR_CPUS to check
paca[i].kexec_state of each to make sure they have quiesced.
However now we have dynamic PACA allocation, paca[NR_CPUS] is not necessarily
valid and we overrun the array; spurious "cpu is not possible, ignoring"
errors result. This patch iterates for_each_online_cpu so stays
within the bounds of paca[] -- and every CPU is now 'possible'.
Signed-off-by: Matt Evans <matt@ozlabs.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Diffstat (limited to 'arch/powerpc')
| -rw-r--r-- | arch/powerpc/kernel/machine_kexec_64.c | 18 |
1 files changed, 1 insertions, 17 deletions
diff --git a/arch/powerpc/kernel/machine_kexec_64.c b/arch/powerpc/kernel/machine_kexec_64.c index 26f9900f773c..ed31a29c4ff7 100644 --- a/arch/powerpc/kernel/machine_kexec_64.c +++ b/arch/powerpc/kernel/machine_kexec_64.c @@ -182,28 +182,12 @@ static void kexec_prepare_cpus_wait(int wait_state) my_cpu = get_cpu(); /* Make sure each CPU has atleast made it to the state we need */ - for (i=0; i < NR_CPUS; i++) { + for_each_online_cpu(i) { if (i == my_cpu) continue; while (paca[i].kexec_state < wait_state) { barrier(); - if (!cpu_possible(i)) { - printk("kexec: cpu %d hw_cpu_id %d is not" - " possible, ignoring\n", - i, paca[i].hw_cpu_id); - break; - } - if (!cpu_online(i)) { - /* Fixme: this can be spinning in - * pSeries_secondary_wait with a paca - * waiting for it to go online. - */ - printk("kexec: cpu %d hw_cpu_id %d is not" - " online, ignoring\n", - i, paca[i].hw_cpu_id); - break; - } if (i != notified) { printk( "kexec: waiting for cpu %d (physical" " %d) to enter %i state\n", |
