[PATCH 3/4] kexec/xen: switch to use xc_kexec_get_range for get_xen_vmcoreinfo.

[David Vrabel]

From: Don Slutz <d...@cloudswitch.com>

Signed-off-by: Don Slutz <d...@cloudswitch.com>
Signed-off-by: David Vrabel <david.vra...@citrix.com>
Reviewed-by: Daniel Kiper <daniel.ki...@oracle.com>
---
 kexec/crashdump-xen.c |   25 +++++++++++++++++++++++++
 kexec/crashdump.c     |    5 -----
 2 files changed, 25 insertions(+), 5 deletions(-)

diff --git a/kexec/crashdump-xen.c b/kexec/crashdump-xen.c
index 8185423..79b68e0 100644
--- a/kexec/crashdump-xen.c
+++ b/kexec/crashdump-xen.c
@@ -164,6 +164,26 @@ unsigned long xen_architecture(struct crash_elf_info 
*elf_info)
 }
 
 #ifdef HAVE_LIBXENCTRL
+int get_xen_vmcoreinfo(uint64_t *addr, uint64_t *len)
+{
+       xc_interface *xc;
+       int ret = 0;
+
+       xc = xc_interface_open(NULL, NULL, 0);
+       if (!xc) {
+               fprintf(stderr, "failed to open xen control interface.\n");
+               return -1;
+       }
+
+       ret = xc_kexec_get_range(xc, KEXEC_RANGE_MA_VMCOREINFO, 0, len, addr);
+
+       xc_interface_close(xc);
+
+       if (ret < 0)
+               return -1;
+       return 0;
+}
+
 int xen_get_nr_phys_cpus(void)
 {
        xc_interface *xc;
@@ -206,6 +226,11 @@ out:
        return cpu;
 }
 #else
+int get_xen_vmcoreinfo(uint64_t *addr, uint64_t *len)
+{
+       return -1;
+}
+
 int xen_get_nr_phys_cpus(void)
 {
        return -1;
diff --git a/kexec/crashdump.c b/kexec/crashdump.c
index 8d88fdf..131e624 100644
--- a/kexec/crashdump.c
+++ b/kexec/crashdump.c
@@ -157,8 +157,3 @@ int get_kernel_vmcoreinfo(uint64_t *addr, uint64_t *len)
 {
        return get_vmcoreinfo("/sys/kernel/vmcoreinfo", addr, len);
 }
-
-int get_xen_vmcoreinfo(uint64_t *addr, uint64_t *len)
-{
-       return get_vmcoreinfo("/sys/hypervisor/vmcoreinfo", addr, len);
-}
-- 
1.7.2.5


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