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parisc: Use num_present_cpus() in alternative patching code

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commit b6405f0829d7b1dd926ba3ca5f691cab835abfaa upstream.

When patching the kernel code some alternatives depend on SMP vs. !SMP.
Use the value of num_present_cpus() instead of num_online_cpus() to
decide, otherwise we may run into issues if and additional CPU is
enabled after having loaded a module while only one CPU was enabled.

Signed-off-by: Helge Deller <deller@gmx.de>
Cc: <stable@vger.kernel.org> # v6.1+
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Helge Deller 2023-05-19 12:12:06 +02:00 committed by Greg Kroah-Hartman
parent bd90ac0002
commit e1f14a4071
1 changed files with 1 additions and 1 deletions
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arch/parisc/kernel/alternative.c
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@ -25,7 +25,7 @@ void __init_or_module apply_alternatives(struct alt_instr *start,
{
struct alt_instr *entry;
int index = 0, applied = 0;
int num_cpus = num_online_cpus();
int num_cpus = num_present_cpus();
u16 cond_check;
cond_check = ALT_COND_ALWAYS |