Support >4 GB physical memory accesses.
Signed-off-by: Stefan Hajnoczi <stefanha@xxxxxxxxxxxxxxxxxx>
---
hw/virtio-blk.c | 7 +++++++
1 file changed, 7 insertions(+)
diff --git a/hw/virtio-blk.c b/hw/virtio-blk.c
index abd9386..99654f1 100644
--- a/hw/virtio-blk.c
+++ b/hw/virtio-blk.c
@@ -64,6 +64,13 @@ static VirtIOBlock *to_virtio_blk(VirtIODevice *vdev)
*/
static inline void *phys_to_host(VirtIOBlock *s, target_phys_addr_t phys)
{
+ /* Adjust for 3.6-4 GB PCI memory range */
+ if (phys >= 0x100000000) {
+ phys -= 0x100000000 - 0xe0000000;
+ } else if (phys >= 0xe0000000) {
+ fprintf(stderr, "phys_to_host bad physical address in PCI range %#lx\n", phys);
+ exit(1);
+ }
return s->phys_mem_zero_host_ptr + phys;
}
--
1.7.10.4
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