From: Sheng Yang <sh...@linux.intel.com> If we use larger BIOS image than current 256KB, we would need move reserved TSS and EPT identity mapping pages. Currently TSS support this, but not EPT.
Signed-off-by: Marcelo Tosatti <mtosa...@redhat.com> Index: qemu-kvm/target-i386/kvm.c =================================================================== --- qemu-kvm.orig/target-i386/kvm.c +++ qemu-kvm/target-i386/kvm.c @@ -341,6 +341,24 @@ static int kvm_has_msr_star(CPUState *en return 0; } +static int kvm_init_identity_map_page(KVMState *s) +{ +#ifdef KVM_CAP_SET_IDENTITY_MAP_ADDR + int ret; + uint64_t addr = 0xfffbc000; + + if (!kvm_check_extension(s, KVM_CAP_SET_IDENTITY_MAP_ADDR)) + return 0; + + ret = kvm_vm_ioctl(s, KVM_SET_IDENTITY_MAP_ADDR, &addr); + if (ret < 0) { + fprintf(stderr, "kvm_set_identity_map_addr: %s\n", strerror(ret)); + return ret; + } +#endif + return 0; +} + int kvm_arch_init(KVMState *s, int smp_cpus) { int ret; @@ -368,7 +386,11 @@ int kvm_arch_init(KVMState *s, int smp_c perror("e820_add_entry() table is full"); exit(1); } - return kvm_vm_ioctl(s, KVM_SET_TSS_ADDR, 0xfffbd000); + ret = kvm_vm_ioctl(s, KVM_SET_TSS_ADDR, 0xfffbd000); + if (ret < 0) + return ret; + + return kvm_init_identity_map_page(s); } static void set_v8086_seg(struct kvm_segment *lhs, const SegmentCache *rhs)