diff mbox series

[3/3] rfi-flush: Call setup_rfi_flush() after LPM migration

Message ID 1518644021-17037-4-git-send-email-mauricfo@linux.vnet.ibm.com
State New
Headers show
Series Setup RFI flush after PowerVM LPM migration | expand

Commit Message

Mauricio Faria de Oliveira Feb. 14, 2018, 9:33 p.m. UTC
From: Michael Ellerman <mpe@ellerman.id.au>

We might have migrated to a machine that uses a different flush type,
or doesn't need flushing at all.

If we migrate to a machine with no flush support, ie. that would use
fallback, we just print an error and switch flushing off. We could
support that, but it would complicate the implementation of the
fallback flush, and we don't expect anyone will ever do it.

Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Signed-off-by: Mauricio Faria de Oliveira <mauricfo@linux.vnet.ibm.com>
---
 arch/powerpc/platforms/pseries/mobility.c | 3 +++
 arch/powerpc/platforms/pseries/pseries.h  | 2 ++
 arch/powerpc/platforms/pseries/setup.c    | 2 +-
 3 files changed, 6 insertions(+), 1 deletion(-)
diff mbox series

Patch

diff --git a/arch/powerpc/platforms/pseries/mobility.c b/arch/powerpc/platforms/pseries/mobility.c
index 0f7fb71..8a8033a 100644
--- a/arch/powerpc/platforms/pseries/mobility.c
+++ b/arch/powerpc/platforms/pseries/mobility.c
@@ -348,6 +348,9 @@  void post_mobility_fixup(void)
 		printk(KERN_ERR "Post-mobility device tree update "
 			"failed: %d\n", rc);
 
+	/* Possibly switch to a new RFI flush type */
+	pseries_setup_rfi_flush();
+
 	return;
 }
 
diff --git a/arch/powerpc/platforms/pseries/pseries.h b/arch/powerpc/platforms/pseries/pseries.h
index 1ae1d9f..27cdcb6 100644
--- a/arch/powerpc/platforms/pseries/pseries.h
+++ b/arch/powerpc/platforms/pseries/pseries.h
@@ -100,4 +100,6 @@  static inline unsigned long cmo_get_page_size(void)
 
 int dlpar_workqueue_init(void);
 
+void pseries_setup_rfi_flush(void);
+
 #endif /* _PSERIES_PSERIES_H */
diff --git a/arch/powerpc/platforms/pseries/setup.c b/arch/powerpc/platforms/pseries/setup.c
index 372d7ad..dad8197 100644
--- a/arch/powerpc/platforms/pseries/setup.c
+++ b/arch/powerpc/platforms/pseries/setup.c
@@ -459,7 +459,7 @@  static void __init find_and_init_phbs(void)
 	of_pci_check_probe_only();
 }
 
-static void pseries_setup_rfi_flush(void)
+void pseries_setup_rfi_flush(void)
 {
 	struct h_cpu_char_result result;
 	enum l1d_flush_type types;