xtensa: SMP: mark each possible CPU as present

jcmvbkbc · gregkh · commit 19960e19a7f9 · 2019-03-23T08:44:25.000+01:00
[ Upstream commit 8b1c42c ] Otherwise it is impossible to enable CPUs after booting with 'maxcpus' parameter. Signed-off-by: Max Filippov <jcmvbkbc@gmail.com> Signed-off-by: Sasha Levin <sashal@kernel.org>
diff --git a/arch/xtensa/kernel/smp.c b/arch/xtensa/kernel/smp.c
@@ -80,7 +80,7 @@ void __init smp_prepare_cpus(unsigned int max_cpus)
 {
 	unsigned i;
 
-	for (i = 0; i < max_cpus; ++i)
+	for_each_possible_cpu(i)
 		set_cpu_present(i, true);
 }
 

Original file line number	Diff line number	Diff line change
`@@ -80,7 +80,7 @@ void __init smp_prepare_cpus(unsigned int max_cpus)`
`80`	`80`	`{`
`81`	`81`	`unsigned i;`
`82`	`82`
`83`		`- for (i = 0; i < max_cpus; ++i)`
	`83`	`+ for_each_possible_cpu(i)`
`84`	`84`	`set_cpu_present(i, true);`
`85`	`85`	`}`
`86`	`86`