static void kvm_patch_ins_ld(u32 *inst, long addr, u32 rt)
{
#ifdef CONFIG_64BIT
kvm_patch_ins(inst, KVM_INST_LD | rt | (addr & 0x0000fffc));
#else
kvm_patch_ins(inst, KVM_INST_LWZ | rt | ((addr + 4) & 0x0000fffc));
#endif
}
static void kvm_patch_ins_b(u32 *inst, int addr)
{
#if defined(CONFIG_RELOCATABLE) && defined(CONFIG_PPC_BOOK3S)
/* On relocatable kernels interrupts handlers and our code
can be in different regions, so we don't patch them */
if ((ulong)inst < (ulong)&__end_interrupts)
return;
#endif
kvm_patch_ins(inst, KVM_INST_B | (addr & KVM_INST_B_MASK));
}
static int kvm_para_setup(void)
{
extern u32 kvm_hypercall_start;
struct device_node *hyper_node;
u32 *insts;
int len, i;
hyper_node = of_find_node_by_path("/hypervisor");
if (!hyper_node)
return -1;
insts = (u32*)of_get_property(hyper_node, "hcall-instructions", &len);
if (len % 4)
return -1;
if (len > (4 * 4))
return -1;
for (i = 0; i < (len / 4); i++)
kvm_patch_ins(&(&kvm_hypercall_start)[i], insts[i]);
return 0;
}
static void kvm_patch_ins_nop(u32 *inst)
{
kvm_patch_ins(inst, KVM_INST_NOP);
}
static void kvm_patch_ins_stw(u32 *inst, long addr, u32 rt)
{
kvm_patch_ins(inst, KVM_INST_STW | rt | (addr & 0x0000fffc));
}
static void kvm_patch_ins_lwz(u32 *inst, long addr, u32 rt)
{
kvm_patch_ins(inst, KVM_INST_LWZ | rt | (addr & 0x0000ffff));
}
