On Wed, Jul 18, 2012 at 04:07:33PM +0100, Stefan Hajnoczi wrote:
> Support >4 GB physical memory accesses.
>
> Signed-off-by: Stefan Hajnoczi <stefanha@xxxxxxxxxxxxxxxxxx>
Need some sane APIs, this is just too scary.
> ---
> 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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