[PATCH stable v4.4 10/52] powerpc/rfi-flush: Call setup_rfi_flush() after LPM migration

[Michael Ellerman]

commit 921bc6cf807ceb2ab8005319cf39f33494d6b100 upstream.

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

Signed-off-by: Michael Ellerman <m...@ellerman.id.au>
Signed-off-by: Mauricio Faria de Oliveira <mauri...@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <m...@ellerman.id.au>
---
 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 --git a/arch/powerpc/platforms/pseries/mobility.c 
b/arch/powerpc/platforms/pseries/mobility.c
index 8dd0c8edefd6..c773396d0969 100644
--- a/arch/powerpc/platforms/pseries/mobility.c
+++ b/arch/powerpc/platforms/pseries/mobility.c
@@ -314,6 +314,9 @@ 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 8411c27293e4..e7d80797384d 100644
--- a/arch/powerpc/platforms/pseries/pseries.h
+++ b/arch/powerpc/platforms/pseries/pseries.h
@@ -81,4 +81,6 @@ extern struct pci_controller_ops pseries_pci_controller_ops;
 
 unsigned long pseries_memory_block_size(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 b831044d3b7d..ab8c4c8b46bd 100644
--- a/arch/powerpc/platforms/pseries/setup.c
+++ b/arch/powerpc/platforms/pseries/setup.c
@@ -499,7 +499,7 @@ 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;
-- 
2.20.1