Commit adf3cc2b authored by Daniel Verkamp's avatar Daniel Verkamp
Browse files

vhost: add fallback if linux/vfio.h is missing 



On older kernels that don't have VFIO, stub out the vhost IOMMU
functions.

Fixes build on older distributions (e.g. CentOS 6).

Change-Id: Icda9998e494c24d252511a4da93ecb56502fe5a7
Signed-off-by: default avatarDaniel Verkamp <daniel.verkamp@intel.com>
Reviewed-on: https://review.gerrithub.io/363473


Tested-by: default avatarSPDK Automated Test System <sys_sgsw@intel.com>
Reviewed-by: default avatarPawel Wodkowski <pawelx.wodkowski@intel.com>
Reviewed-by: default avatarBen Walker <benjamin.walker@intel.com>
parent 1573df0f

lib/vhost/vhost_iommu.c

+22 −2
Original line number Diff line number Diff line
@@ -33,6 +33,12 @@ 


#include "spdk/stdinc.h"



#include "vhost_iommu.h"



#include <linux/version.h>



#if LINUX_VERSION_CODE >= KERNEL_VERSION(3, 6, 0)



#include <linux/vfio.h>



#include "spdk/env.h"
@@ -40,8 +46,6 @@ 


#include "spdk_internal/log.h"



#include "vhost_iommu.h"



struct vfio_map {

	uint64_t iova;

	uint64_t size;
@@ -303,3 +307,19 @@ int spdk_iommu_mem_unregister(uint64_t addr, uint64_t len) 
}



SPDK_LOG_REGISTER_TRACE_FLAG("vhost_vfio", SPDK_TRACE_VHOST_VFIO)



#else



/* linux/vfio.h not available */



int spdk_iommu_mem_register(uint64_t addr, uint64_t len)

{

	return 0;

}



int spdk_iommu_mem_unregister(uint64_t addr, uint64_t len)

{

	return 0;

}



#endif