[Qemu-devel] [PATCH 4/7] block-vpc: Fix support for images > 4 GB

[Kevin Wolf <kwolf@suse.de>]

This patch fixes the truncation of sector offsets to 32 bits.

Signed-off-by: Kevin Wolf <kwolf@suse.de>
---
 block-vpc.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/block-vpc.c b/block-vpc.c
index 3c92bb3..51644e6 100644
--- a/block-vpc.c
+++ b/block-vpc.c
@@ -207,7 +207,7 @@ static inline int seek_to_sector(BlockDriverState *bs, int64_t sector_num)
     if (pagetable_index > s->max_table_entries || s->pagetable[pagetable_index] == 0xffffffff)
 	return -1; // not allocated
 
-    bitmap_offset = 512 * s->pagetable[pagetable_index];
+    bitmap_offset = 512 * (uint64_t) s->pagetable[pagetable_index];
     block_offset = bitmap_offset + 512 + (512 * pageentry_index);
 
 //    printf("sector: %" PRIx64 ", index: %x, offset: %x, bioff: %" PRIx64 ", bloff: %" PRIx64 "\n",
-- 
1.6.0.2