diff options
| -rw-r--r-- | include/sysemu/kvm.h | 10 | ||||
| -rw-r--r-- | kvm-all.c | 6 | ||||
| -rw-r--r-- | kvm-stub.c | 1 |
3 files changed, 17 insertions, 0 deletions
diff --git a/include/sysemu/kvm.h b/include/sysemu/kvm.h index 08284ef770..8b19322c0a 100644 --- a/include/sysemu/kvm.h +++ b/include/sysemu/kvm.h @@ -45,6 +45,7 @@ extern bool kvm_async_interrupts_allowed; extern bool kvm_irqfds_allowed; extern bool kvm_msi_via_irqfd_allowed; extern bool kvm_gsi_routing_allowed; +extern bool kvm_readonly_mem_allowed; #if defined CONFIG_KVM || !defined NEED_CPU_H #define kvm_enabled() (kvm_allowed) @@ -97,6 +98,14 @@ extern bool kvm_gsi_routing_allowed; */ #define kvm_gsi_routing_enabled() (kvm_gsi_routing_allowed) +/** + * kvm_readonly_mem_enabled: + * + * Returns: true if KVM readonly memory is enabled (ie the kernel + * supports it and we're running in a configuration that permits it). + */ +#define kvm_readonly_mem_enabled() (kvm_readonly_mem_allowed) + #else #define kvm_enabled() (0) #define kvm_irqchip_in_kernel() (false) @@ -104,6 +113,7 @@ extern bool kvm_gsi_routing_allowed; #define kvm_irqfds_enabled() (false) #define kvm_msi_via_irqfd_enabled() (false) #define kvm_gsi_routing_allowed() (false) +#define kvm_readonly_mem_enabled() (false) #endif struct kvm_run; @@ -111,6 +111,7 @@ bool kvm_irqfds_allowed; bool kvm_msi_via_irqfd_allowed; bool kvm_gsi_routing_allowed; bool kvm_allowed; +bool kvm_readonly_mem_allowed; static const KVMCapabilityInfo kvm_required_capabilites[] = { KVM_CAP_INFO(USER_MEMORY), @@ -1425,6 +1426,11 @@ int kvm_init(void) s->irq_set_ioctl = KVM_IRQ_LINE_STATUS; } +#ifdef KVM_CAP_READONLY_MEM + kvm_readonly_mem_allowed = + (kvm_check_extension(s, KVM_CAP_READONLY_MEM) > 0); +#endif + ret = kvm_arch_init(s); if (ret < 0) { goto err; diff --git a/kvm-stub.c b/kvm-stub.c index b2c8f9b02d..22eaff0671 100644 --- a/kvm-stub.c +++ b/kvm-stub.c @@ -26,6 +26,7 @@ bool kvm_irqfds_allowed; bool kvm_msi_via_irqfd_allowed; bool kvm_gsi_routing_allowed; bool kvm_allowed; +bool kvm_readonly_mem_allowed; int kvm_init_vcpu(CPUState *cpu) { |