48 #define K1		27  macro
224 	/* k0/k1 not being used in host kernel context */  in kvm_mips_build_vcpu_run()
225 	UASM_i_ADDIU(&p, K1, SP, -(int)sizeof(struct pt_regs));  in kvm_mips_build_vcpu_run()
229 		UASM_i_SW(&p, i, offsetof(struct pt_regs, regs[i]), K1);  in kvm_mips_build_vcpu_run()
234 	UASM_i_SW(&p, V0, offsetof(struct pt_regs, cp0_status), K1);  in kvm_mips_build_vcpu_run()
237 	kvm_mips_build_save_scratch(&p, V1, K1);  in kvm_mips_build_vcpu_run()
243 	UASM_i_ADDIU(&p, K1, A0, offsetof(struct kvm_vcpu, arch));  in kvm_mips_build_vcpu_run()
249 	UASM_i_SW(&p, SP, offsetof(struct kvm_vcpu_arch, host_stack), K1);  in kvm_mips_build_vcpu_run()
252 	UASM_i_SW(&p, GP, offsetof(struct kvm_vcpu_arch, host_gp), K1);  in kvm_mips_build_vcpu_run()
263 	UASM_i_LW(&p, K0, offsetof(struct kvm_vcpu_arch, guest_ebase), K1);  in kvm_mips_build_vcpu_run()
305 	UASM_i_LW(&p, T0, offsetof(struct kvm_vcpu_arch, pc), K1);  in kvm_mips_build_enter_guest()
313 	UASM_i_SW(&p, K0, offsetof(struct kvm_vcpu_arch, host_pgd), K1);  in kvm_mips_build_enter_guest()
324 			  (int)offsetof(struct kvm_vcpu, arch), K1);  in kvm_mips_build_enter_guest()
364 		  K1);  in kvm_mips_build_enter_guest()
403 		/* Guest k0/k1 loaded later */  in kvm_mips_build_enter_guest()
404 		if (i == K0 || i == K1)  in kvm_mips_build_enter_guest()
406 		UASM_i_LW(&p, i, offsetof(struct kvm_vcpu_arch, gprs[i]), K1);  in kvm_mips_build_enter_guest()
411 	UASM_i_LW(&p, K0, offsetof(struct kvm_vcpu_arch, hi), K1);  in kvm_mips_build_enter_guest()
414 	UASM_i_LW(&p, K0, offsetof(struct kvm_vcpu_arch, lo), K1);  in kvm_mips_build_enter_guest()
418 	/* Restore the guest's k0/k1 registers */  in kvm_mips_build_enter_guest()
419 	UASM_i_LW(&p, K0, offsetof(struct kvm_vcpu_arch, gprs[K0]), K1);  in kvm_mips_build_enter_guest()
420 	UASM_i_LW(&p, K1, offsetof(struct kvm_vcpu_arch, gprs[K1]), K1);  in kvm_mips_build_enter_guest()
452 	/* Save guest k1 into scratch register */  in kvm_mips_build_tlb_refill_exception()
453 	UASM_i_MTC0(&p, K1, scratch_tmp[0], scratch_tmp[1]);  in kvm_mips_build_tlb_refill_exception()
456 	UASM_i_MFC0(&p, K1, scratch_vcpu[0], scratch_vcpu[1]);  in kvm_mips_build_tlb_refill_exception()
459 	UASM_i_SW(&p, K0, offsetof(struct kvm_vcpu, arch.gprs[K0]), K1);  in kvm_mips_build_tlb_refill_exception()
468 	UASM_i_MFC0(&p, K1, C0_PGD);  in kvm_mips_build_tlb_refill_exception()
469 	uasm_i_lddir(&p, K0, K1, 3);  /* global page dir */  in kvm_mips_build_tlb_refill_exception()
471 	uasm_i_lddir(&p, K1, K0, 1);  /* middle page dir */  in kvm_mips_build_tlb_refill_exception()
473 	uasm_i_ldpte(&p, K1, 0);      /* even */  in kvm_mips_build_tlb_refill_exception()
474 	uasm_i_ldpte(&p, K1, 1);      /* odd */  in kvm_mips_build_tlb_refill_exception()
489 	build_get_pmde64(&p, &l, &r, K0, K1); /* get pmd in K1 */  in kvm_mips_build_tlb_refill_exception()
491 	build_get_pgde32(&p, K0, K1); /* get pgd in K1 */  in kvm_mips_build_tlb_refill_exception()
496 	build_get_ptep(&p, K0, K1);  in kvm_mips_build_tlb_refill_exception()
497 	build_update_entries(&p, K0, K1);  in kvm_mips_build_tlb_refill_exception()
504 	UASM_i_MFC0(&p, K1, scratch_vcpu[0], scratch_vcpu[1]);  in kvm_mips_build_tlb_refill_exception()
506 	/* Restore the guest's k0/k1 registers */  in kvm_mips_build_tlb_refill_exception()
507 	UASM_i_LW(&p, K0, offsetof(struct kvm_vcpu, arch.gprs[K0]), K1);  in kvm_mips_build_tlb_refill_exception()
509 	UASM_i_MFC0(&p, K1, scratch_tmp[0], scratch_tmp[1]);  in kvm_mips_build_tlb_refill_exception()
538 	/* Save guest k1 into scratch register */  in kvm_mips_build_exception()
539 	UASM_i_MTC0(&p, K1, scratch_tmp[0], scratch_tmp[1]);  in kvm_mips_build_exception()
542 	UASM_i_MFC0(&p, K1, scratch_vcpu[0], scratch_vcpu[1]);  in kvm_mips_build_exception()
543 	UASM_i_ADDIU(&p, K1, K1, offsetof(struct kvm_vcpu, arch));  in kvm_mips_build_exception()
546 	UASM_i_SW(&p, K0, offsetof(struct kvm_vcpu_arch, gprs[K0]), K1);  in kvm_mips_build_exception()
585 	 * Both k0/k1 registers will have already been saved (k0 into the vcpu  in kvm_mips_build_exit()
586 	 * structure, and k1 into the scratch_tmp register).  in kvm_mips_build_exit()
588 	 * The k1 register will already contain the kvm_vcpu_arch pointer.  in kvm_mips_build_exit()
593 		/* Guest k0/k1 saved later */  in kvm_mips_build_exit()
594 		if (i == K0 || i == K1)  in kvm_mips_build_exit()
596 		UASM_i_SW(&p, i, offsetof(struct kvm_vcpu_arch, gprs[i]), K1);  in kvm_mips_build_exit()
602 	UASM_i_SW(&p, T0, offsetof(struct kvm_vcpu_arch, hi), K1);  in kvm_mips_build_exit()
605 	UASM_i_SW(&p, T0, offsetof(struct kvm_vcpu_arch, lo), K1);  in kvm_mips_build_exit()
608 	/* Finally save guest k1 to VCPU */  in kvm_mips_build_exit()
611 	UASM_i_SW(&p, T0, offsetof(struct kvm_vcpu_arch, gprs[K1]), K1);  in kvm_mips_build_exit()
623 	UASM_i_SW(&p, K0, offsetof(struct kvm_vcpu_arch, pc), K1);  in kvm_mips_build_exit()
627 		  K1);  in kvm_mips_build_exit()
630 	uasm_i_sw(&p, K0, offsetof(struct kvm_vcpu_arch, host_cp0_cause), K1);  in kvm_mips_build_exit()
635 					   host_cp0_badinstr), K1);  in kvm_mips_build_exit()
641 					   host_cp0_badinstrp), K1);  in kvm_mips_build_exit()
671 			  K1);  in kvm_mips_build_exit()
687 			  K1);  in kvm_mips_build_exit()
695 			  K1);  in kvm_mips_build_exit()
706 		  offsetof(struct kvm_vcpu_arch, host_pgd), K1);  in kvm_mips_build_exit()
722 		  offsetof(struct kvm_vcpu_arch, host_cp0_guestctl0), K1);  in kvm_mips_build_exit()
748 	UASM_i_LW(&p, GP, offsetof(struct kvm_vcpu_arch, host_gp), K1);  in kvm_mips_build_exit()
751 	UASM_i_LW(&p, SP, offsetof(struct kvm_vcpu_arch, host_stack), K1);  in kvm_mips_build_exit()
812 	 * XXXKYMA: k0/k1 could have been blown away if we processed  in kvm_mips_build_ret_from_exit()
814 	 * guest, reload k1  in kvm_mips_build_ret_from_exit()
817 	uasm_i_move(&p, K1, S0);  in kvm_mips_build_ret_from_exit()
818 	UASM_i_ADDIU(&p, K1, K1, offsetof(struct kvm_vcpu, arch));  in kvm_mips_build_ret_from_exit()
855 	UASM_i_LW(&p, T0, offsetof(struct kvm_vcpu_arch, guest_ebase), K1);  in kvm_mips_build_ret_to_guest()
893 	UASM_i_LW(&p, K1, offsetof(struct kvm_vcpu_arch, host_stack), K1);  in kvm_mips_build_ret_to_host()
894 	UASM_i_ADDIU(&p, K1, K1, -(int)sizeof(struct pt_regs));  in kvm_mips_build_ret_to_host()
907 		UASM_i_LW(&p, i, offsetof(struct pt_regs, regs[i]), K1);  in kvm_mips_build_ret_to_host()
916 	UASM_i_LW(&p, RA, offsetof(struct pt_regs, regs[RA]), K1);  in kvm_mips_build_ret_to_host()