diff options
Diffstat (limited to 'arch/mips/kvm/dyntrans.c')
| -rw-r--r-- | arch/mips/kvm/dyntrans.c | 34 |
1 files changed, 25 insertions, 9 deletions
diff --git a/arch/mips/kvm/dyntrans.c b/arch/mips/kvm/dyntrans.c index 8a1833b9eb38..d280894915ed 100644 --- a/arch/mips/kvm/dyntrans.c +++ b/arch/mips/kvm/dyntrans.c @@ -11,6 +11,7 @@ #include <linux/errno.h> #include <linux/err.h> +#include <linux/highmem.h> #include <linux/kvm_host.h> #include <linux/module.h> #include <linux/vmalloc.h> @@ -29,14 +30,18 @@ static int kvm_mips_trans_replace(struct kvm_vcpu *vcpu, u32 *opc, union mips_instruction replace) { - unsigned long kseg0_opc, flags; - - if (KVM_GUEST_KSEGX(opc) == KVM_GUEST_KSEG0) { - kseg0_opc = - CKSEG0ADDR(kvm_mips_translate_guest_kseg0_to_hpa - (vcpu, (unsigned long) opc)); - memcpy((void *)kseg0_opc, (void *)&replace, sizeof(u32)); - local_flush_icache_range(kseg0_opc, kseg0_opc + 32); + unsigned long paddr, flags; + void *vaddr; + + if (KVM_GUEST_KSEGX((unsigned long)opc) == KVM_GUEST_KSEG0) { + paddr = kvm_mips_translate_guest_kseg0_to_hpa(vcpu, + (unsigned long)opc); + vaddr = kmap_atomic(pfn_to_page(PHYS_PFN(paddr))); + vaddr += paddr & ~PAGE_MASK; + memcpy(vaddr, (void *)&replace, sizeof(u32)); + local_flush_icache_range((unsigned long)vaddr, + (unsigned long)vaddr + 32); + kunmap_atomic(vaddr); } else if (KVM_GUEST_KSEGX((unsigned long) opc) == KVM_GUEST_KSEG23) { local_irq_save(flags); memcpy((void *)opc, (void *)&replace, sizeof(u32)); @@ -72,7 +77,10 @@ int kvm_mips_trans_cache_va(union mips_instruction inst, u32 *opc, synci_inst.i_format.opcode = bcond_op; synci_inst.i_format.rs = inst.i_format.rs; synci_inst.i_format.rt = synci_op; - synci_inst.i_format.simmediate = inst.i_format.simmediate; + if (cpu_has_mips_r6) + synci_inst.i_format.simmediate = inst.spec3_format.simmediate; + else + synci_inst.i_format.simmediate = inst.i_format.simmediate; return kvm_mips_trans_replace(vcpu, opc, synci_inst); } @@ -95,6 +103,10 @@ int kvm_mips_trans_mfc0(union mips_instruction inst, u32 *opc, mfc0_inst.i_format.rt = inst.c0r_format.rt; mfc0_inst.i_format.simmediate = KVM_GUEST_COMMPAGE_ADDR | offsetof(struct kvm_mips_commpage, cop0.reg[rd][sel]); +#ifdef CONFIG_CPU_BIG_ENDIAN + if (sizeof(vcpu->arch.cop0->reg[0][0]) == 8) + mfc0_inst.i_format.simmediate |= 4; +#endif } return kvm_mips_trans_replace(vcpu, opc, mfc0_inst); @@ -113,6 +125,10 @@ int kvm_mips_trans_mtc0(union mips_instruction inst, u32 *opc, mtc0_inst.i_format.rt = inst.c0r_format.rt; mtc0_inst.i_format.simmediate = KVM_GUEST_COMMPAGE_ADDR | offsetof(struct kvm_mips_commpage, cop0.reg[rd][sel]); +#ifdef CONFIG_CPU_BIG_ENDIAN + if (sizeof(vcpu->arch.cop0->reg[0][0]) == 8) + mtc0_inst.i_format.simmediate |= 4; +#endif return kvm_mips_trans_replace(vcpu, opc, mtc0_inst); } |
