Merge branch 'linus' into perf/urgent

Merge reason: we need to fix a non-trivial merge conflict.

Signed-off-by: Ingo Molnar <mingo@elte.hu>

1 files changed, 7 insertions, 1 deletions

diff --git a/arch/powerpc/kernel/iommu.c b/arch/powerpc/kernel/iommu.c
index 0cfcf98aafca..359f078571c7 100644
--- a/arch/powerpc/kernel/iommu.c
+++ b/arch/powerpc/kernel/iommu.c
@@ -39,6 +39,7 @@
 #include <asm/pci-bridge.h>
 #include <asm/machdep.h>
 #include <asm/kdump.h>
+#include <asm/fadump.h>
 
 #define DBG(...)
 
@@ -445,7 +446,12 @@ void iommu_unmap_sg(struct iommu_table *tbl, struct scatterlist *sglist,
 
 static void iommu_table_clear(struct iommu_table *tbl)
 {
-        if (!is_kdump_kernel()) {
+        /*
+         * In case of firmware assisted dump system goes through clean
+         * reboot process at the time of system crash. Hence it's safe to
+         * clear the TCE entries if firmware assisted dump is active.
+         */
+        if (!is_kdump_kernel() || is_fadump_active()) {
                 /* Clear the table in case firmware left allocations in it */
                 ppc_md.tce_free(tbl, tbl->it_offset, tbl->it_size);
                 return;