diff --git a/target-i386/kvm.c b/target-i386/kvm.c index b42b56c26c..9dccbe112d 100644 --- a/target-i386/kvm.c +++ b/target-i386/kvm.c @@ -22,7 +22,7 @@ #include "qemu-common.h" #include "sysemu/sysemu.h" -#include "sysemu/kvm.h" +#include "sysemu/kvm_int.h" #include "kvm_i386.h" #include "cpu.h" #include "exec/gdbstub.h" @@ -845,6 +845,40 @@ static int kvm_get_supported_msrs(KVMState *s) return ret; } +static Notifier smram_machine_done; +static KVMMemoryListener smram_listener; +static AddressSpace smram_address_space; +static MemoryRegion smram_as_root; +static MemoryRegion smram_as_mem; + +static void register_smram_listener(Notifier *n, void *unused) +{ + MemoryRegion *smram = + (MemoryRegion *) object_resolve_path("/machine/smram", NULL); + + /* Outer container... */ + memory_region_init(&smram_as_root, OBJECT(kvm_state), "mem-container-smram", ~0ull); + memory_region_set_enabled(&smram_as_root, true); + + /* ... with two regions inside: normal system memory with low + * priority, and... + */ + memory_region_init_alias(&smram_as_mem, OBJECT(kvm_state), "mem-smram", + get_system_memory(), 0, ~0ull); + memory_region_add_subregion_overlap(&smram_as_root, 0, &smram_as_mem, 0); + memory_region_set_enabled(&smram_as_mem, true); + + if (smram) { + /* ... SMRAM with higher priority */ + memory_region_add_subregion_overlap(&smram_as_root, 0, smram, 10); + memory_region_set_enabled(smram, true); + } + + address_space_init(&smram_address_space, &smram_as_root, "KVM-SMRAM"); + kvm_memory_listener_register(kvm_state, &smram_listener, + &smram_address_space, 1); +} + int kvm_arch_init(MachineState *ms, KVMState *s) { uint64_t identity_base = 0xfffbc000; @@ -903,6 +937,11 @@ int kvm_arch_init(MachineState *ms, KVMState *s) return ret; } } + + if (kvm_check_extension(s, KVM_CAP_X86_SMM)) { + smram_machine_done.notify = register_smram_listener; + qemu_add_machine_init_done_notifier(&smram_machine_done); + } return 0; }