[PATCH 3/6] Convert QEMU command line builder to virArch APIs

["Daniel P. Berrange" <berrange@xxxxxxxxxx>]

From: "Daniel P. Berrange" <berrange@xxxxxxxxxx>

Use virArch APIs to determine host architecture when launching
QEMU.

Signed-off-by: Daniel P. Berrange <berrange@xxxxxxxxxx>
---
 src/qemu/qemu_command.c | 25 +++++--------------------
 1 file changed, 5 insertions(+), 20 deletions(-)

diff --git a/src/qemu/qemu_command.c b/src/qemu/qemu_command.c
index 9009bd2..6968f74 100644
--- a/src/qemu/qemu_command.c
+++ b/src/qemu/qemu_command.c
@@ -32,6 +32,7 @@
 #include "logging.h"
 #include "virterror_internal.h"
 #include "util.h"
+#include "virarch.h"
 #include "virfile.h"
 #include "uuid.h"
 #include "c-ctype.h"
@@ -121,21 +122,6 @@ VIR_ENUM_IMPL(qemuDomainFSDriver, VIR_DOMAIN_FS_DRIVER_TYPE_LAST,
               "handle");
 
 
-static void
-uname_normalize(struct utsname *ut)
-{
-    uname(ut);
-
-    /* Map i386, i486, i586 to i686.  */
-    if (ut->machine[0] == 'i' &&
-        ut->machine[1] != '\0' &&
-        ut->machine[2] == '8' &&
-        ut->machine[3] == '6' &&
-        ut->machine[4] == '\0')
-        ut->machine[1] = '6';
-}
-
-
 /**
  * qemuPhysIfaceConnect:
  * @def: the definition of the VM (needed by 802.1Qbh and audit)
@@ -4281,7 +4267,7 @@ qemuBuildCpuArgStr(const virQEMUDriverPtr driver,
                    const virDomainDefPtr def,
                    const char *emulator,
                    qemuCapsPtr caps,
-                   const struct utsname *ut,
+                   virArch hostarch,
                    char **opt,
                    bool *hasHwVirt,
                    bool migrating)
@@ -4414,7 +4400,7 @@ qemuBuildCpuArgStr(const virQEMUDriverPtr driver,
          *  2. emulator is qemu-system-x86_64
          */
         if (STREQ(def->os.arch, "i686") &&
-            ((STREQ(ut->machine, "x86_64") &&
+            (((hostarch == VIR_ARCH_X86_64) &&
               strstr(emulator, "kvm")) ||
              strstr(emulator, "x86_64"))) {
             virBufferAdd(&buf, default_model, -1);
@@ -4959,7 +4945,6 @@ qemuBuildCommandLine(virConnectPtr conn,
                      enum virNetDevVPortProfileOp vmop)
 {
     int i, j;
-    struct utsname ut;
     int disableKQEMU = 0;
     int enableKQEMU = 0;
     int disableKVM = 0;
@@ -4977,7 +4962,6 @@ qemuBuildCommandLine(virConnectPtr conn,
     int spice = 0;
     int usbcontroller = 0;
     bool usblegacy = false;
-    uname_normalize(&ut);
     int contOrder[] = {
         /* We don't add an explicit IDE or FD controller because the
          * provided PIIX4 device already includes one. It isn't possible to
@@ -4988,6 +4972,7 @@ qemuBuildCommandLine(virConnectPtr conn,
         VIR_DOMAIN_CONTROLLER_TYPE_VIRTIO_SERIAL,
         VIR_DOMAIN_CONTROLLER_TYPE_CCID,
     };
+    virArch hostarch = virArchFromHost();
 
     VIR_DEBUG("conn=%p driver=%p def=%p mon=%p json=%d "
               "caps=%p migrateFrom=%s migrateFD=%d "
@@ -5074,7 +5059,7 @@ qemuBuildCommandLine(virConnectPtr conn,
         goto error;
 
     if (qemuBuildCpuArgStr(driver, def, emulator, caps,
-                           &ut, &cpu, &hasHwVirt, !!migrateFrom) < 0)
+                           hostarch, &cpu, &hasHwVirt, !!migrateFrom) < 0)
         goto error;
 
     if (cpu) {
-- 
1.7.11.7

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