[Qemu-devel] [PATCH 2/3] S390: Tell user why VM creation failed
The KVM kernel module on S390 refuses to create a VM when the switch_amode kernel parameter is not used. Since that is not exactly obvious, let's give the user a nice warning. Signed-off-by: Alexander Graf ag...@suse.de --- kvm-all.c |7 ++- 1 files changed, 6 insertions(+), 1 deletions(-) diff --git a/kvm-all.c b/kvm-all.c index 534ead0..acf7e31 100644 --- a/kvm-all.c +++ b/kvm-all.c @@ -609,8 +609,13 @@ int kvm_init(int smp_cpus) } s-vmfd = kvm_ioctl(s, KVM_CREATE_VM, 0); -if (s-vmfd 0) +if (s-vmfd 0) { +#ifdef TARGET_S390X +fprintf(stderr, Please add the 'switch_amode' kernel parameter to +your host kernel command line\n); +#endif goto err; +} /* initially, KVM allocated its own memory and we had to jump through * hooks to make phys_ram_base point to this. Modern versions of KVM -- 1.6.0.2
[Qemu-devel] [PATCH 2/3] S390: Tell user why VM creation failed
The KVM kernel module on S390 refuses to create a VM when the switch_amode kernel parameter is not used. Since that is not exactly obvious, let's give the user a nice warning. Signed-off-by: Alexander Graf ag...@suse.de --- kvm-all.c |7 ++- 1 files changed, 6 insertions(+), 1 deletions(-) diff --git a/kvm-all.c b/kvm-all.c index 534ead0..acf7e31 100644 --- a/kvm-all.c +++ b/kvm-all.c @@ -609,8 +609,13 @@ int kvm_init(int smp_cpus) } s-vmfd = kvm_ioctl(s, KVM_CREATE_VM, 0); -if (s-vmfd 0) +if (s-vmfd 0) { +#ifdef TARGET_S390X +fprintf(stderr, Please add the 'switch_amode' kernel parameter to +your host kernel command line\n); +#endif goto err; +} /* initially, KVM allocated its own memory and we had to jump through * hooks to make phys_ram_base point to this. Modern versions of KVM -- 1.6.0.2