X-Git-Url: http://git.droids-corp.org/?a=blobdiff_plain;f=lib%2Flibrte_eal%2Flinuxapp%2Feal%2Feal_xen_memory.c;h=0b612bb1f4c57b401c44f830a03d839a22e13743;hb=bd6aa172cf35046e197b3a42a79069d4da15813a;hp=7fd9e8398af6c5d6ea2b6aeb65e7f204051b0338;hpb=719dbebceb811b4fa5a4c001d89ca516e4b274c8;p=dpdk.git

diff --git a/lib/librte_eal/linuxapp/eal/eal_xen_memory.c b/lib/librte_eal/linuxapp/eal/eal_xen_memory.c
index 7fd9e8398a..0b612bb1f4 100644
--- a/lib/librte_eal/linuxapp/eal/eal_xen_memory.c
+++ b/lib/librte_eal/linuxapp/eal/eal_xen_memory.c
@@ -156,13 +156,27 @@ get_xen_memory_size(void)
  * Based on physical address to caculate MFN in Xen Dom0.
  */
 phys_addr_t
-rte_xen_mem_phy2mch(uint32_t memseg_id, const phys_addr_t phy_addr)
+rte_xen_mem_phy2mch(int32_t memseg_id, const phys_addr_t phy_addr)
 {
-	int mfn_id;
+	int mfn_id, i;
 	uint64_t mfn, mfn_offset;
 	struct rte_mem_config *mcfg = rte_eal_get_configuration()->mem_config;
 	struct rte_memseg *memseg = mcfg->memseg;
 
+	/* find the memory segment owning the physical address */
+	if (memseg_id == -1) {
+		for (i = 0; i < RTE_MAX_MEMSEG; i++) {
+			if ((phy_addr >= memseg[i].phys_addr) &&
+					(phys_addr < memseg[i].phys_addr +
+						memseg[i].size)) {
+				memseg_id = i;
+				break;
+			}
+		}
+		if (memseg_id == -1)
+			return RTE_BAD_PHYS_ADDR;
+	}
+
 	mfn_id = (phy_addr - memseg[memseg_id].phys_addr) / RTE_PGSIZE_2M;
 
 	/*the MFN is contiguous in 2M */
@@ -171,7 +185,7 @@ rte_xen_mem_phy2mch(uint32_t memseg_id, const phys_addr_t phy_addr)
 	mfn = mfn_offset + memseg[memseg_id].mfn[mfn_id];
 
 	/** return mechine address */
-	return (mfn * PAGE_SIZE + phy_addr % PAGE_SIZE);
+	return mfn * PAGE_SIZE + phy_addr % PAGE_SIZE;
 }
 
 int