libxl: Recognise ARM architectures

Only tested on v7 but the v8 equivalent seems pretty obvious.

XEN_CAP_REGEX already accepts more than it should (e.g. x86_64p or x86_32be)
but I have stuck with the existing pattern.

With this I can create a guest from:
  <domain type='xen'>
    <name>libvirt-test</name>
    <uuid>6343998e-9eda-11e3-98f6-77252a7d02f3</uuid>
    <memory>393216</memory>
    <currentMemory>393216</currentMemory>
    <vcpu>1</vcpu>
    <os>
      <type arch='armv7l' machine='xenpv'>linux</type>
      <kernel>/boot/vmlinuz-arm-native</kernel>
      <cmdline>console=hvc0 earlyprintk debug root=/dev/xvda1</cmdline>
    </os>
    <clock offset='utc'/>
    <on_poweroff>destroy</on_poweroff>
    <on_reboot>restart</on_reboot>
    <on_crash>destroy</on_crash>
    <devices>
      <disk type='block' device='disk'>
        <source dev='/dev/marilith-n0/debian-disk'/>
        <target dev='xvda1'/>
      </disk>
      <interface type='bridge'>
        <mac address='8e:a7:8e:3c:f4:f6'/>
        <source bridge='xenbr0'/>
      </interface>
    </devices>
  </domain>

Using virsh create and I can destroy it too.

Currently virsh console fails with:
  Connected to domain libvirt-test
  Escape character is ^]
  error: internal error: cannot find character device <null>

I haven't investigated yet.

Signed-off-by: Ian Campbell <ian.campbell@citrix.com>
Signed-off-by: Eric Blake <eblake@redhat.com>

diff --git a/src/libxl/libxl_conf.c b/src/libxl/libxl_conf.c
index 13eddd11fd8d369c8353601c2fd9180d5cbeed83..ade0a0800feaf5d96a95a1ef19eb1beb96e76ab0 100644 (file)
--- a/src/libxl/libxl_conf.c
+++ b/src/libxl/libxl_conf.c
@@ -61,7 +61,7 @@ struct guest_arch {
     int ia64_be;
 };
 
-#define XEN_CAP_REGEX "(xen|hvm)-[[:digit:]]+\\.[[:digit:]]+-(x86_32|x86_64|ia64|powerpc64)(p|be)?"
+#define XEN_CAP_REGEX "(xen|hvm)-[[:digit:]]+\\.[[:digit:]]+-(aarch64|armv7l|x86_32|x86_64|ia64|powerpc64)(p|be)?"
 
 
 static virClassPtr libxlDriverConfigClass;
@@ -320,8 +320,11 @@ libxlCapsInitGuests(libxl_ctx *ctx, virCapsPtr caps)
             }
             else if (STRPREFIX(&token[subs[2].rm_so], "powerpc64")) {
                 arch = VIR_ARCH_PPC64;
+            } else if (STRPREFIX(&token[subs[2].rm_so], "armv7l")) {
+                arch = VIR_ARCH_ARMV7L;
+            } else if (STRPREFIX(&token[subs[2].rm_so], "aarch64")) {
+                arch = VIR_ARCH_AARCH64;
             } else {
-                /* XXX arm ? */
                 continue;
             }