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author | Roger Pau Monné <royger@FreeBSD.org> | 2015-05-25 09:47:16 +0000 |
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committer | Roger Pau Monné <royger@FreeBSD.org> | 2015-05-25 09:47:16 +0000 |
commit | 02761cf314ec8e97b649f411b10b4fdb6ce3e7a4 (patch) | |
tree | 76fa78dd4d38b47340bf012de0eb5055de2cbf67 | |
parent | e61d4e626e1426e61d4ccbbddcacd9e1f1dd96df (diff) | |
download | src-02761cf314ec8e97b649f411b10b4fdb6ce3e7a4.tar.gz src-02761cf314ec8e97b649f411b10b4fdb6ce3e7a4.zip |
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
Notes
Notes:
svn path=/head/; revision=283516
-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 2e4a9fea8f9a..50fd9df14912 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."); } |