From 7d0a07fa926436baf1238dcf68a55ea96cf5b9ab Mon Sep 17 00:00:00 2001 From: Alexander Graf Date: Mon, 14 Jul 2014 19:15:15 +0200 Subject: [PATCH] KVM: Add helper to run KVM_CHECK_EXTENSION on vm fd We now can call KVM_CHECK_EXTENSION on the kvm fd or on the vm fd, whereas the vm version is more accurate when it comes to PPC KVM. Add a helper to make the vm version available that falls back to the non-vm variant if the vm one is not available yet to stay compatible. Signed-off-by: Alexander Graf --- include/sysemu/kvm.h | 2 ++ kvm-all.c | 13 +++++++++++++ 2 files changed, 15 insertions(+) diff --git a/include/sysemu/kvm.h b/include/sysemu/kvm.h index 174ea36afa..d2000af9c3 100644 --- a/include/sysemu/kvm.h +++ b/include/sysemu/kvm.h @@ -303,6 +303,8 @@ bool kvm_arch_stop_on_emulation_error(CPUState *cpu); int kvm_check_extension(KVMState *s, unsigned int extension); +int kvm_vm_check_extension(KVMState *s, unsigned int extension); + #define kvm_vm_enable_cap(s, capability, cap_flags, ...) \ ({ \ struct kvm_enable_cap cap = { \ diff --git a/kvm-all.c b/kvm-all.c index b240bf87a9..b1cf703f9e 100644 --- a/kvm-all.c +++ b/kvm-all.c @@ -493,6 +493,19 @@ int kvm_check_extension(KVMState *s, unsigned int extension) return ret; } +int kvm_vm_check_extension(KVMState *s, unsigned int extension) +{ + int ret; + + ret = kvm_vm_ioctl(s, KVM_CHECK_EXTENSION, extension); + if (ret < 0) { + /* VM wide version not implemented, use global one instead */ + ret = kvm_check_extension(s, extension); + } + + return ret; +} + static int kvm_set_ioeventfd_mmio(int fd, hwaddr addr, uint32_t val, bool assign, uint32_t size, bool datamatch) { -- GitLab