[oe-commits] [openembedded-core] 08/09: runqemu: Add support for kvm on aarch64

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rpurdie pushed a commit to branch master-next
in repository openembedded-core.

commit 36d2598f3ecdcd8e0c41f8d26f69443af00ffe50
Author: Richard Purdie <richard.purdie at linuxfoundation.org>
AuthorDate: Thu May 30 23:08:16 2019 +0100

    runqemu: Add support for kvm on aarch64
    
    The main issue is to make the x86 checks apply to x86 targets only. We may
    end up with better checks on other architectures but this adapts the code to
    allow for that and its still controlled by whether QB_CPU_KVM is set.
    
    The code needed minor refactoring so the qemu-system-XXX name is set
    earlier so the kvm code can use it.
    
    Signed-off-by: Richard Purdie <richard.purdie at linuxfoundation.org>
---
 scripts/runqemu | 22 +++++++++++++---------
 1 file changed, 13 insertions(+), 9 deletions(-)

diff --git a/scripts/runqemu b/scripts/runqemu
index 39bed03..5752ecd 100755
--- a/scripts/runqemu
+++ b/scripts/runqemu
@@ -491,12 +491,13 @@ class BaseConfig(object):
         yocto_paravirt_kvm_wiki = "https://wiki.yoctoproject.org/wiki/Running_an_x86_Yocto_Linux_image_under_QEMU_KVM"
         dev_kvm = '/dev/kvm'
         dev_vhost = '/dev/vhost-net'
-        with open('/proc/cpuinfo', 'r') as f:
-            kvm_cap = re.search('vmx|svm', "".join(f.readlines()))
-        if not kvm_cap:
-            logger.error("You are trying to enable KVM on a cpu without VT support.")
-            logger.error("Remove kvm from the command-line, or refer:")
-            raise RunQemuError(yocto_kvm_wiki)
+        if self.qemu_system.endswith(('i386', 'x86_64')):
+            with open('/proc/cpuinfo', 'r') as f:
+                kvm_cap = re.search('vmx|svm', "".join(f.readlines()))
+            if not kvm_cap:
+                logger.error("You are trying to enable KVM on a cpu without VT support.")
+                logger.error("Remove kvm from the command-line, or refer:")
+                raise RunQemuError(yocto_kvm_wiki)
 
         if not os.path.exists(dev_kvm):
             logger.error("Missing KVM device. Have you inserted kvm modules?")
@@ -703,6 +704,7 @@ class BaseConfig(object):
         else:
             os.putenv('QEMU_AUDIO_DRV', 'none')
 
+        self.check_qemu_system()
         self.check_kvm()
         self.check_fstype()
         self.check_rootfs()
@@ -1128,21 +1130,23 @@ class BaseConfig(object):
 
         return 'qemu-system-%s' % qbsys
 
-    def setup_final(self):
+    def check_qemu_system(self):
         qemu_system = self.get('QB_SYSTEM_NAME')
         if not qemu_system:
             qemu_system = self.guess_qb_system()
         if not qemu_system:
             raise RunQemuError("Failed to boot, QB_SYSTEM_NAME is NULL!")
+        self.qemu_system = qemu_system
 
-        qemu_bin = os.path.join(self.bindir_native, qemu_system)
+    def setup_final(self):
+        qemu_bin = os.path.join(self.bindir_native, self.qemu_system)
 
         # It is possible to have qemu-native in ASSUME_PROVIDED, and it won't
         # find QEMU in sysroot, it needs to use host's qemu.
         if not os.path.exists(qemu_bin):
             logger.info("QEMU binary not found in %s, trying host's QEMU" % qemu_bin)
             for path in (os.environ['PATH'] or '').split(':'):
-                qemu_bin_tmp = os.path.join(path, qemu_system)
+                qemu_bin_tmp = os.path.join(path, self.qemu_system)
                 logger.info("Trying: %s" % qemu_bin_tmp)
                 if os.path.exists(qemu_bin_tmp):
                     qemu_bin = qemu_bin_tmp

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