diff options
Diffstat (limited to 'arch/powerpc/kernel/iommu.c')
| -rw-r--r-- | arch/powerpc/kernel/iommu.c | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/arch/powerpc/kernel/iommu.c b/arch/powerpc/kernel/iommu.c index 0cfcf98aafc..359f078571c 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; |