[Skiboot] [PATCH] FSP/MDST: Fix TCE alignment issue

[Vasant Hegde]

We have used TCE_MASK value (4095) instead of TCE_PSIZE (4096) to align memory
source address. In some corner cases (like source memory size = 4097) we may
endup doing wrong mapping and corrupting part of SYSDUMP.

This patch uses ALIGN_UP macro with TCE_PSIZE value for alignining memory.

Signed-off-by: Vasant Hegde <hegdevasant at linux.vnet.ibm.com>
---
 hw/fsp/fsp-mdst-table.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/hw/fsp/fsp-mdst-table.c b/hw/fsp/fsp-mdst-table.c
index e6018aa..0f145ba 100644
--- a/hw/fsp/fsp-mdst-table.c
+++ b/hw/fsp/fsp-mdst-table.c
@@ -90,7 +90,7 @@ static inline uint32_t get_dump_region_map_size(uint64_t addr, uint32_t size)
 
 	start = addr & ~TCE_MASK;
 	end = addr + size;
-	end = (end + (TCE_MASK - 1)) & ~TCE_MASK;
+	end = ALIGN_UP(end, TCE_PSIZE);
 
 	return (end - start);
 }