arm64: Ensure fpsimd support is ready before userspace is active

Suzuki K Poulose · ctmarinas · commit ae2e972dae3c · 2017-10-06T16:35:25.000+01:00
We register the pm/hotplug callbacks for FPSIMD as late_initcall,
which happens after the userspace is active (from initramfs via
populate_rootfs, a rootfs_initcall). Make sure we are ready even
before the userspace could potentially use it, by promoting to
a core_initcall.

Cc: Will Deacon &lt;will.deacon@arm.com&gt;
Cc: Mark Rutland &lt;mark.rutland@arm.com&gt;
Cc: Dave Martin &lt;dave.martin@arm.com&gt;
Signed-off-by: Suzuki K Poulose &lt;suzuki.poulose@arm.com&gt;
Signed-off-by: Catalin Marinas &lt;catalin.marinas@arm.com&gt;
diff --git a/arch/arm64/kernel/fpsimd.c b/arch/arm64/kernel/fpsimd.c
@@ -444,4 +444,4 @@ static int __init fpsimd_init(void)
 
 	return 0;
 }
-late_initcall(fpsimd_init);
+core_initcall(fpsimd_init);

Original file line number	Diff line number	Diff line change
`@@ -444,4 +444,4 @@ static int __init fpsimd_init(void)`
`444`	`444`
`445`	`445`	`return 0;`
`446`	`446`	`}`
`447`		`-late_initcall(fpsimd_init);`
	`447`	`+core_initcall(fpsimd_init);`