diff mbox series

[v5,06/10] powerpc/64: Setup KUP on secondary CPUs

Message ID 20190308011619.22402-6-mpe@ellerman.id.au (mailing list archive)
State Superseded
Headers show
Series [v5,01/10] powerpc/powernv/idle: Restore IAMR after idle | expand

Checks

Context Check Description
snowpatch_ozlabs/apply_patch success Successfully applied on branch next (9580b71b5a7863c24a9bd18bcd2ad759b86b1eff)
snowpatch_ozlabs/checkpatch success total: 0 errors, 0 warnings, 0 checks, 9 lines checked

Commit Message

Michael Ellerman March 8, 2019, 1:16 a.m. UTC 
From: Russell Currey <ruscur@russell.cc>

Some platforms (i.e. Radix MMU) need per-CPU initialisation for KUP.

Any platforms that only want to do KUP initialisation once
globally can just check to see if they're running on the boot CPU, or
check if whatever setup they need has already been performed.

Note that this is only for 64-bit.

Signed-off-by: Russell Currey <ruscur@russell.cc>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
---
v5: Unchanged.

 arch/powerpc/kernel/setup_64.c | 3 +++
 1 file changed, 3 insertions(+)
diff mbox series

Patch

diff --git a/arch/powerpc/kernel/setup_64.c b/arch/powerpc/kernel/setup_64.c
index 47ffa0885081..72358a5022fe 100644
--- a/arch/powerpc/kernel/setup_64.c
+++ b/arch/powerpc/kernel/setup_64.c
@@ -390,6 +390,9 @@  void early_setup_secondary(void)
 	/* Initialize the hash table or TLB handling */
 	early_init_mmu_secondary();
 
+	/* Perform any KUP setup that is per-cpu */
+	setup_kup();
+
 	/*
 	 * At this point, we can let interrupts switch to virtual mode
 	 * (the MMU has been setup), so adjust the MSR in the PACA to