nvme: 64kB page size fixes

Initialise our maximum page size capability to 64kB and increase
the page_size variable from 16 to 32 bits.
Signed-off-by: NAnton Blanchard <anton@samba.org>
Reviewed-by: NStefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: NKevin Wolf <kwolf@redhat.com>

hw/block/nvme.c

@@ -811,6 +811,7 @@ static int nvme_init(PCIDevice *pci_dev)
     NVME_CAP_SET_AMS(n->bar.cap, 1);
     NVME_CAP_SET_TO(n->bar.cap, 0xf);
     NVME_CAP_SET_CSS(n->bar.cap, 1);
+    NVME_CAP_SET_MPSMAX(n->bar.cap, 4);
 
     n->bar.vs = 0x00010001;
     n->bar.intmc = n->bar.intms = 0;

hw/block/nvme.h

@@ -688,7 +688,7 @@ typedef struct NvmeCtrl {
     NvmeBar      bar;
     BlockConf    conf;
 
-    uint16_t    page_size;
+    uint32_t    page_size;
     uint16_t    page_bits;
     uint16_t    max_prp_ents;
     uint16_t    cqe_size;