diff options
| author | royger <royger@FreeBSD.org> | 2015-05-25 09:47:16 +0000 |
|---|---|---|
| committer | royger <royger@FreeBSD.org> | 2015-05-25 09:47:16 +0000 |
| commit | 8d3ecc0ad786e5f3bd56dbb341f96bf9cd825f60 (patch) | |
| tree | 76fa78dd4d38b47340bf012de0eb5055de2cbf67 /sys/x86 | |
| parent | e1f68e3cfb486ab5b85834b353842edfcbd2418e (diff) | |
| download | FreeBSD-src-8d3ecc0ad786e5f3bd56dbb341f96bf9cd825f60.zip FreeBSD-src-8d3ecc0ad786e5f3bd56dbb341f96bf9cd825f60.tar.gz | |
xen: make sure xenpv bus is the last to attach
This is needed so other buses have a chance of attaching a real ISA bus, if
none is found xenpv will attach it.
Sponsored by: Citrix Systems R&D
Diffstat (limited to 'sys/x86')
| -rw-r--r-- | sys/x86/xen/xenpv.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/sys/x86/xen/xenpv.c b/sys/x86/xen/xenpv.c index 2e4a9fe..50fd9df 100644 --- a/sys/x86/xen/xenpv.c +++ b/sys/x86/xen/xenpv.c @@ -35,6 +35,7 @@ __FBSDID("$FreeBSD$"); #include <sys/pcpu.h> #include <sys/rman.h> #include <sys/smp.h> +#include <sys/limits.h> #include <vm/vm.h> #include <vm/vm_page.h> @@ -72,7 +73,11 @@ xenpv_identify(driver_t *driver, device_t parent) if (devclass_get_device(xenpv_devclass, 0)) return; - if (BUS_ADD_CHILD(parent, 0, "xenpv", 0) == NULL) + /* + * The xenpv bus should be the last to attach in order + * to properly detect if an ISA bus has already been added. + */ + if (BUS_ADD_CHILD(parent, UINT_MAX, "xenpv", 0) == NULL) panic("Unable to attach xenpv bus."); } |
