2 * arch/ia64/kvm/vmm_ivt.S
4 * Copyright (C) 1998-2001, 2003 Hewlett-Packard Co
5 * Stephane Eranian <eranian@hpl.hp.com>
6 * David Mosberger <davidm@hpl.hp.com>
7 * Copyright (C) 2000, 2002-2003 Intel Co
8 * Asit Mallick <asit.k.mallick@intel.com>
9 * Suresh Siddha <suresh.b.siddha@intel.com>
10 * Kenneth Chen <kenneth.w.chen@intel.com>
11 * Fenghua Yu <fenghua.yu@intel.com>
14 * 00/08/23 Asit Mallick <asit.k.mallick@intel.com> TLB handling
16 * 00/12/20 David Mosberger-Tang <davidm@hpl.hp.com> DTLB/ITLB
17 * handler now uses virtual PT.
19 * 07/6/20 Xuefei Xu (Anthony Xu) (anthony.xu@intel.com)
20 * Supporting Intel virtualization architecture
25 * This file defines the interruption vector table used by the CPU.
26 * It does not include one entry per possible cause of interruption.
28 * The first 20 entries of the table contain 64 bundles each while the
29 * remaining 48 entries contain only 16 bundles each.
31 * The 64 bundles are used to allow inlining the whole handler for
33 * interruptions like TLB misses.
35 * For each entry, the comment is as follows:
37 * // 0x1c00 Entry 7 (size 64 bundles) Data Key Miss
39 * entry offset ----/ / / /
41 * entry number ---------/ / /
43 * size of the entry -------------/ /
45 * vector name -------------------------------------/
47 * interruptions triggering this vector
48 * ----------------------/
50 * The table is 32KB in size and must be aligned on 32KB
52 * (The CPU ignores the 15 lower bits of the address)
54 * Table is based upon EAS2.6 (Oct 1999)
58 #include <asm/asmmacro.h>
59 #include <asm/cache.h>
60 #include <asm/pgtable.h>
62 #include "asm-offsets.h"
64 #include "kvm_minstate.h"
68 # define PSR_DEFAULT_BITS psr.ac
70 # define PSR_DEFAULT_BITS 0
73 #define KVM_FAULT(n) \
76 br.sptk.many kvm_vmm_panic; \
79 #define KVM_REFLECT(n) \
81 mov r19=n; /* prepare to save predicates */ \
84 tbit.z p6,p7=r29,IA64_PSR_VM_BIT; \
85 (p7) br.sptk.many kvm_dispatch_reflection; \
86 br.sptk.many kvm_vmm_panic; \
88 GLOBAL_ENTRY(kvm_vmm_panic)
89 KVM_SAVE_MIN_WITH_COVER_R19
90 alloc r14=ar.pfs,0,0,1,0
92 adds r3=8,r2 // set up second base pointer
96 srlz.i // guarantee that interruption collection is on
98 (p15) ssm psr.i // restore psr.
99 addl r14=@gprel(ia64_leave_hypervisor),gp
104 br.call.sptk.many b6=vmm_panic_handler;
107 .section .text..ivt,"ax"
109 .align 32768 // align on 32KB boundary
112 ///////////////////////////////////////////////////////////////
113 // 0x0000 Entry 0 (size 64 bundles) VHPT Translation (8,20,47)
118 .org kvm_ia64_ivt+0x400
119 ////////////////////////////////////////////////////////////////
120 // 0x0400 Entry 1 (size 64 bundles) ITLB (21)
125 tbit.z p6,p7=r29,IA64_PSR_VM_BIT;
126 (p6) br.sptk kvm_alt_itlb_miss
128 br.sptk kvm_itlb_miss_dispatch
132 .org kvm_ia64_ivt+0x0800
133 //////////////////////////////////////////////////////////////////
134 // 0x0800 Entry 2 (size 64 bundles) DTLB (9,48)
139 tbit.z p6,p7=r29,IA64_PSR_VM_BIT;
140 (p6) br.sptk kvm_alt_dtlb_miss
141 br.sptk kvm_dtlb_miss_dispatch
144 .org kvm_ia64_ivt+0x0c00
145 ////////////////////////////////////////////////////////////////////
146 // 0x0c00 Entry 3 (size 64 bundles) Alt ITLB (19)
147 ENTRY(kvm_alt_itlb_miss)
148 mov r16=cr.ifa // get address that caused the TLB miss
152 movl r19=(((1 << IA64_MAX_PHYS_BITS) - 1) & ~0xfff)
154 and r19=r19,r16 // clear ed, reserved bits, and PTE control bits
156 or r19=r17,r19 // insert PTE control bits into r19
158 movl r20=IA64_GRANULE_SHIFT<<2
162 itc.i r19 // insert the TLB entry
165 END(kvm_alt_itlb_miss)
167 .org kvm_ia64_ivt+0x1000
168 /////////////////////////////////////////////////////////////////////
169 // 0x1000 Entry 4 (size 64 bundles) Alt DTLB (7,46)
170 ENTRY(kvm_alt_dtlb_miss)
171 mov r16=cr.ifa // get address that caused the TLB miss
174 movl r19=(((1 << IA64_MAX_PHYS_BITS) - 1) & ~0xfff)
177 and r19=r19,r16 // clear ed, reserved bits, and PTE control bits
179 or r19=r19,r17 // insert PTE control bits into r19
181 movl r20=IA64_GRANULE_SHIFT<<2
185 itc.d r19 // insert the TLB entry
188 END(kvm_alt_dtlb_miss)
190 .org kvm_ia64_ivt+0x1400
191 //////////////////////////////////////////////////////////////////////
192 // 0x1400 Entry 5 (size 64 bundles) Data nested TLB (6,45)
193 ENTRY(kvm_nested_dtlb_miss)
195 END(kvm_nested_dtlb_miss)
197 .org kvm_ia64_ivt+0x1800
198 /////////////////////////////////////////////////////////////////////
199 // 0x1800 Entry 6 (size 64 bundles) Instruction Key Miss (24)
204 .org kvm_ia64_ivt+0x1c00
205 /////////////////////////////////////////////////////////////////////
206 // 0x1c00 Entry 7 (size 64 bundles) Data Key Miss (12,51)
211 .org kvm_ia64_ivt+0x2000
212 ////////////////////////////////////////////////////////////////////
213 // 0x2000 Entry 8 (size 64 bundles) Dirty-bit (54)
218 .org kvm_ia64_ivt+0x2400
219 ////////////////////////////////////////////////////////////////////
220 // 0x2400 Entry 9 (size 64 bundles) Instruction Access-bit (27)
221 ENTRY(kvm_iaccess_bit)
225 .org kvm_ia64_ivt+0x2800
226 ///////////////////////////////////////////////////////////////////
227 // 0x2800 Entry 10 (size 64 bundles) Data Access-bit (15,55)
228 ENTRY(kvm_daccess_bit)
232 .org kvm_ia64_ivt+0x2c00
233 /////////////////////////////////////////////////////////////////
234 // 0x2c00 Entry 11 (size 64 bundles) Break instruction (33)
235 ENTRY(kvm_break_fault)
240 KVM_SAVE_MIN_WITH_COVER_R19
242 alloc r14=ar.pfs,0,0,4,0 //(must be first in insn group!)
244 mov out2=cr.isr // FIXME: pity to make this slow access twice
245 mov out3=cr.iim // FIXME: pity to make this slow access twice
246 adds r3=8,r2 // set up second base pointer
250 srlz.i // guarantee that interruption collection is on
252 (p15)ssm psr.i // restore psr.i
253 addl r14=@gprel(ia64_leave_hypervisor),gp
259 br.call.sptk.many b6=kvm_ia64_handle_break
263 .org kvm_ia64_ivt+0x3000
264 /////////////////////////////////////////////////////////////////
265 // 0x3000 Entry 12 (size 64 bundles) External Interrupt (4)
267 mov r31=pr // prepare to save predicates
271 tbit.z p6,p7=r29,IA64_PSR_VM_BIT
272 tbit.z p0,p15=r29,IA64_PSR_I_BIT
274 (p7) br.sptk kvm_dispatch_interrupt
276 mov r27=ar.rsc /* M */
278 mov r25=ar.unat /* M */
279 mov r26=ar.pfs /* I */
280 mov r28=cr.iip /* M */
281 cover /* B (or nothing) */
288 addl r1=-VMM_PT_REGS_SIZE,r1
290 adds r17=2*L1_CACHE_BYTES,r1 /* really: biggest cache-line size */
291 adds r16=PT(CR_IPSR),r1
293 lfetch.fault.excl.nt1 [r17],L1_CACHE_BYTES
294 st8 [r16]=r29 /* save cr.ipsr */
296 lfetch.fault.excl.nt1 [r17]
299 adds r16=PT(R8),r1 /* initialize first base pointer */
300 adds r17=PT(R9),r1 /* initialize second base pointer */
301 mov r18=r0 /* make sure r18 isn't NaT */
303 .mem.offset 0,0; st8.spill [r16]=r8,16
304 .mem.offset 8,0; st8.spill [r17]=r9,16
306 .mem.offset 0,0; st8.spill [r16]=r10,24
307 .mem.offset 8,0; st8.spill [r17]=r11,24
309 st8 [r16]=r28,16 /* save cr.iip */
310 st8 [r17]=r30,16 /* save cr.ifs */
311 mov r8=ar.fpsr /* M */
314 movl r11=FPSR_DEFAULT /* L-unit */
316 st8 [r16]=r25,16 /* save ar.unat */
317 st8 [r17]=r26,16 /* save ar.pfs */
318 shl r18=r18,16 /* compute ar.rsc to be used for "loadrs" */
320 st8 [r16]=r27,16 /* save ar.rsc */
321 adds r17=16,r17 /* skip over ar_rnat field */
323 st8 [r17]=r31,16 /* save predicates */
324 adds r16=16,r16 /* skip over ar_bspstore field */
326 st8 [r16]=r29,16 /* save b0 */
327 st8 [r17]=r18,16 /* save ar.rsc value for "loadrs" */
329 .mem.offset 0,0; st8.spill [r16]=r20,16 /* save original r1 */
330 .mem.offset 8,0; st8.spill [r17]=r12,16
332 /* switch to kernel memory stack (with 16 bytes of scratch) */
334 .mem.offset 0,0; st8.spill [r16]=r13,16
335 .mem.offset 8,0; st8.spill [r17]=r8,16 /* save ar.fpsr */
337 .mem.offset 0,0; st8.spill [r16]=r15,16
338 .mem.offset 8,0; st8.spill [r17]=r14,16
341 .mem.offset 0,0; st8.spill [r16]=r2,16
342 .mem.offset 8,0; st8.spill [r17]=r3,16
343 adds r2=VMM_PT_REGS_R16_OFFSET,r1
344 adds r14 = VMM_VCPU_GP_OFFSET,r13
349 mov r1=r14 /* establish kernel global pointer */
353 alloc r14=ar.pfs,0,0,1,0 // must be first in an insn group
361 adds r3=8,r2 // set up second base pointer for SAVE_REST
362 srlz.i // ensure everybody knows psr.ic is back on
364 .mem.offset 0,0; st8.spill [r2]=r16,16
365 .mem.offset 8,0; st8.spill [r3]=r17,16
367 .mem.offset 0,0; st8.spill [r2]=r18,16
368 .mem.offset 8,0; st8.spill [r3]=r19,16
370 .mem.offset 0,0; st8.spill [r2]=r20,16
371 .mem.offset 8,0; st8.spill [r3]=r21,16
374 .mem.offset 0,0; st8.spill [r2]=r22,16
375 .mem.offset 8,0; st8.spill [r3]=r23,16
378 .mem.offset 0,0; st8.spill [r2]=r24,16
379 .mem.offset 8,0; st8.spill [r3]=r25,16
381 .mem.offset 0,0; st8.spill [r2]=r26,16
382 .mem.offset 8,0; st8.spill [r3]=r27,16
384 .mem.offset 0,0; st8.spill [r2]=r28,16
385 .mem.offset 8,0; st8.spill [r3]=r29,16
387 .mem.offset 0,0; st8.spill [r2]=r30,16
388 .mem.offset 8,0; st8.spill [r3]=r31,32
390 mov ar.fpsr=r11 /* M-unit */
391 st8 [r2]=r8,8 /* ar.ccv */
392 adds r24=PT(B6)-PT(F7),r3
402 adds r25=PT(B7)-PT(F11),r3
404 st8 [r24]=r18,16 /* b6 */
405 st8 [r25]=r19,16 /* b7 */
407 st8 [r24]=r9 /* ar.csd */
408 st8 [r25]=r10 /* ar.ssd */
410 srlz.d // make sure we see the effect of cr.ivr
411 addl r14=@gprel(ia64_leave_nested),gp
414 br.call.sptk.many b6=kvm_ia64_handle_irq
418 .global kvm_dispatch_vexirq
419 .org kvm_ia64_ivt+0x3400
420 //////////////////////////////////////////////////////////////////////
421 // 0x3400 Entry 13 (size 64 bundles) Reserved
422 ENTRY(kvm_virtual_exirq)
430 (p6) add r29 = VMM_VCPU_SAVED_GP_OFFSET,r21
434 KVM_SAVE_MIN_WITH_COVER_R19
435 alloc r14=ar.pfs,0,0,1,0
440 srlz.i // guarantee that interruption collection is on
442 (p15) ssm psr.i // restore psr.i
443 adds r3=8,r2 // set up second base pointer
446 addl r14=@gprel(ia64_leave_hypervisor),gp
449 br.call.sptk.many b6=kvm_vexirq
450 END(kvm_virtual_exirq)
452 .org kvm_ia64_ivt+0x3800
453 /////////////////////////////////////////////////////////////////////
454 // 0x3800 Entry 14 (size 64 bundles) Reserved
456 // this code segment is from 2.6.16.13
458 .org kvm_ia64_ivt+0x3c00
459 ///////////////////////////////////////////////////////////////////////
460 // 0x3c00 Entry 15 (size 64 bundles) Reserved
463 .org kvm_ia64_ivt+0x4000
464 ///////////////////////////////////////////////////////////////////////
465 // 0x4000 Entry 16 (size 64 bundles) Reserved
468 .org kvm_ia64_ivt+0x4400
469 //////////////////////////////////////////////////////////////////////
470 // 0x4400 Entry 17 (size 64 bundles) Reserved
473 .org kvm_ia64_ivt+0x4800
474 //////////////////////////////////////////////////////////////////////
475 // 0x4800 Entry 18 (size 64 bundles) Reserved
478 .org kvm_ia64_ivt+0x4c00
479 //////////////////////////////////////////////////////////////////////
480 // 0x4c00 Entry 19 (size 64 bundles) Reserved
483 .org kvm_ia64_ivt+0x5000
484 //////////////////////////////////////////////////////////////////////
485 // 0x5000 Entry 20 (size 16 bundles) Page Not Present
486 ENTRY(kvm_page_not_present)
488 END(kvm_page_not_present)
490 .org kvm_ia64_ivt+0x5100
491 ///////////////////////////////////////////////////////////////////////
492 // 0x5100 Entry 21 (size 16 bundles) Key Permission vector
493 ENTRY(kvm_key_permission)
495 END(kvm_key_permission)
497 .org kvm_ia64_ivt+0x5200
498 //////////////////////////////////////////////////////////////////////
499 // 0x5200 Entry 22 (size 16 bundles) Instruction Access Rights (26)
500 ENTRY(kvm_iaccess_rights)
502 END(kvm_iaccess_rights)
504 .org kvm_ia64_ivt+0x5300
505 //////////////////////////////////////////////////////////////////////
506 // 0x5300 Entry 23 (size 16 bundles) Data Access Rights (14,53)
507 ENTRY(kvm_daccess_rights)
509 END(kvm_daccess_rights)
511 .org kvm_ia64_ivt+0x5400
512 /////////////////////////////////////////////////////////////////////
513 // 0x5400 Entry 24 (size 16 bundles) General Exception (5,32,34,36,38,39)
514 ENTRY(kvm_general_exception)
517 END(kvm_general_exception)
519 .org kvm_ia64_ivt+0x5500
520 //////////////////////////////////////////////////////////////////////
521 // 0x5500 Entry 25 (size 16 bundles) Disabled FP-Register (35)
522 ENTRY(kvm_disabled_fp_reg)
524 END(kvm_disabled_fp_reg)
526 .org kvm_ia64_ivt+0x5600
527 ////////////////////////////////////////////////////////////////////
528 // 0x5600 Entry 26 (size 16 bundles) Nat Consumption (11,23,37,50)
529 ENTRY(kvm_nat_consumption)
531 END(kvm_nat_consumption)
533 .org kvm_ia64_ivt+0x5700
534 /////////////////////////////////////////////////////////////////////
535 // 0x5700 Entry 27 (size 16 bundles) Speculation (40)
536 ENTRY(kvm_speculation_vector)
538 END(kvm_speculation_vector)
540 .org kvm_ia64_ivt+0x5800
541 /////////////////////////////////////////////////////////////////////
542 // 0x5800 Entry 28 (size 16 bundles) Reserved
545 .org kvm_ia64_ivt+0x5900
546 ///////////////////////////////////////////////////////////////////
547 // 0x5900 Entry 29 (size 16 bundles) Debug (16,28,56)
548 ENTRY(kvm_debug_vector)
550 END(kvm_debug_vector)
552 .org kvm_ia64_ivt+0x5a00
553 ///////////////////////////////////////////////////////////////
554 // 0x5a00 Entry 30 (size 16 bundles) Unaligned Reference (57)
555 ENTRY(kvm_unaligned_access)
557 END(kvm_unaligned_access)
559 .org kvm_ia64_ivt+0x5b00
560 //////////////////////////////////////////////////////////////////////
561 // 0x5b00 Entry 31 (size 16 bundles) Unsupported Data Reference (57)
562 ENTRY(kvm_unsupported_data_reference)
564 END(kvm_unsupported_data_reference)
566 .org kvm_ia64_ivt+0x5c00
567 ////////////////////////////////////////////////////////////////////
568 // 0x5c00 Entry 32 (size 16 bundles) Floating Point FAULT (65)
569 ENTRY(kvm_floating_point_fault)
571 END(kvm_floating_point_fault)
573 .org kvm_ia64_ivt+0x5d00
574 /////////////////////////////////////////////////////////////////////
575 // 0x5d00 Entry 33 (size 16 bundles) Floating Point Trap (66)
576 ENTRY(kvm_floating_point_trap)
578 END(kvm_floating_point_trap)
580 .org kvm_ia64_ivt+0x5e00
581 //////////////////////////////////////////////////////////////////////
582 // 0x5e00 Entry 34 (size 16 bundles) Lower Privilege Transfer Trap (66)
583 ENTRY(kvm_lower_privilege_trap)
585 END(kvm_lower_privilege_trap)
587 .org kvm_ia64_ivt+0x5f00
588 //////////////////////////////////////////////////////////////////////
589 // 0x5f00 Entry 35 (size 16 bundles) Taken Branch Trap (68)
590 ENTRY(kvm_taken_branch_trap)
592 END(kvm_taken_branch_trap)
594 .org kvm_ia64_ivt+0x6000
595 ////////////////////////////////////////////////////////////////////
596 // 0x6000 Entry 36 (size 16 bundles) Single Step Trap (69)
597 ENTRY(kvm_single_step_trap)
599 END(kvm_single_step_trap)
600 .global kvm_virtualization_fault_back
601 .org kvm_ia64_ivt+0x6100
602 /////////////////////////////////////////////////////////////////////
603 // 0x6100 Entry 37 (size 16 bundles) Virtualization Fault
604 ENTRY(kvm_virtualization_fault)
606 adds r16 = VMM_VCPU_SAVED_GP_OFFSET,r21
609 adds r17 = VMM_VCPU_GP_OFFSET, r21
612 cmp.eq p6,p0=EVENT_MOV_FROM_AR,r24
613 cmp.eq p7,p0=EVENT_MOV_FROM_RR,r24
614 cmp.eq p8,p0=EVENT_MOV_TO_RR,r24
615 cmp.eq p9,p0=EVENT_RSM,r24
616 cmp.eq p10,p0=EVENT_SSM,r24
617 cmp.eq p11,p0=EVENT_MOV_TO_PSR,r24
618 cmp.eq p12,p0=EVENT_THASH,r24
619 (p6) br.dptk.many kvm_asm_mov_from_ar
620 (p7) br.dptk.many kvm_asm_mov_from_rr
621 (p8) br.dptk.many kvm_asm_mov_to_rr
622 (p9) br.dptk.many kvm_asm_rsm
623 (p10) br.dptk.many kvm_asm_ssm
624 (p11) br.dptk.many kvm_asm_mov_to_psr
625 (p12) br.dptk.many kvm_asm_thash
627 kvm_virtualization_fault_back:
628 adds r16 = VMM_VCPU_SAVED_GP_OFFSET,r21
633 adds r16 = VMM_VCPU_CAUSE_OFFSET,r21
634 adds r17 = VMM_VCPU_OPCODE_OFFSET,r21
639 cmp.ne p6,p0=EVENT_RFI, r24
640 (p6) br.sptk kvm_dispatch_virtualization_fault
642 adds r18=VMM_VPD_BASE_OFFSET,r21
646 adds r18=VMM_VPD_VIFS_OFFSET,r18
651 (p6) br.sptk kvm_dispatch_virtualization_fault
653 //if vifs.v=1 desert current register frame
654 alloc r18=ar.pfs,0,0,0,0
655 br.sptk kvm_dispatch_virtualization_fault
656 END(kvm_virtualization_fault)
658 .org kvm_ia64_ivt+0x6200
659 //////////////////////////////////////////////////////////////
660 // 0x6200 Entry 38 (size 16 bundles) Reserved
663 .org kvm_ia64_ivt+0x6300
664 /////////////////////////////////////////////////////////////////
665 // 0x6300 Entry 39 (size 16 bundles) Reserved
668 .org kvm_ia64_ivt+0x6400
669 /////////////////////////////////////////////////////////////////
670 // 0x6400 Entry 40 (size 16 bundles) Reserved
673 .org kvm_ia64_ivt+0x6500
674 //////////////////////////////////////////////////////////////////
675 // 0x6500 Entry 41 (size 16 bundles) Reserved
678 .org kvm_ia64_ivt+0x6600
679 //////////////////////////////////////////////////////////////////
680 // 0x6600 Entry 42 (size 16 bundles) Reserved
683 .org kvm_ia64_ivt+0x6700
684 //////////////////////////////////////////////////////////////////
685 // 0x6700 Entry 43 (size 16 bundles) Reserved
688 .org kvm_ia64_ivt+0x6800
689 //////////////////////////////////////////////////////////////////
690 // 0x6800 Entry 44 (size 16 bundles) Reserved
693 .org kvm_ia64_ivt+0x6900
694 ///////////////////////////////////////////////////////////////////
695 // 0x6900 Entry 45 (size 16 bundles) IA-32 Exeception
696 //(17,18,29,41,42,43,44,58,60,61,62,72,73,75,76,77)
697 ENTRY(kvm_ia32_exception)
699 END(kvm_ia32_exception)
701 .org kvm_ia64_ivt+0x6a00
702 ////////////////////////////////////////////////////////////////////
703 // 0x6a00 Entry 46 (size 16 bundles) IA-32 Intercept (30,31,59,70,71)
704 ENTRY(kvm_ia32_intercept)
706 END(kvm_ia32_intercept)
708 .org kvm_ia64_ivt+0x6c00
709 /////////////////////////////////////////////////////////////////////
710 // 0x6c00 Entry 48 (size 16 bundles) Reserved
713 .org kvm_ia64_ivt+0x6d00
714 //////////////////////////////////////////////////////////////////////
715 // 0x6d00 Entry 49 (size 16 bundles) Reserved
718 .org kvm_ia64_ivt+0x6e00
719 //////////////////////////////////////////////////////////////////////
720 // 0x6e00 Entry 50 (size 16 bundles) Reserved
723 .org kvm_ia64_ivt+0x6f00
724 /////////////////////////////////////////////////////////////////////
725 // 0x6f00 Entry 51 (size 16 bundles) Reserved
728 .org kvm_ia64_ivt+0x7100
729 ////////////////////////////////////////////////////////////////////
730 // 0x7100 Entry 53 (size 16 bundles) Reserved
733 .org kvm_ia64_ivt+0x7200
734 /////////////////////////////////////////////////////////////////////
735 // 0x7200 Entry 54 (size 16 bundles) Reserved
738 .org kvm_ia64_ivt+0x7300
739 ////////////////////////////////////////////////////////////////////
740 // 0x7300 Entry 55 (size 16 bundles) Reserved
743 .org kvm_ia64_ivt+0x7400
744 ////////////////////////////////////////////////////////////////////
745 // 0x7400 Entry 56 (size 16 bundles) Reserved
748 .org kvm_ia64_ivt+0x7500
749 /////////////////////////////////////////////////////////////////////
750 // 0x7500 Entry 57 (size 16 bundles) Reserved
753 .org kvm_ia64_ivt+0x7600
754 /////////////////////////////////////////////////////////////////////
755 // 0x7600 Entry 58 (size 16 bundles) Reserved
758 .org kvm_ia64_ivt+0x7700
759 ////////////////////////////////////////////////////////////////////
760 // 0x7700 Entry 59 (size 16 bundles) Reserved
763 .org kvm_ia64_ivt+0x7800
764 ////////////////////////////////////////////////////////////////////
765 // 0x7800 Entry 60 (size 16 bundles) Reserved
768 .org kvm_ia64_ivt+0x7900
769 /////////////////////////////////////////////////////////////////////
770 // 0x7900 Entry 61 (size 16 bundles) Reserved
773 .org kvm_ia64_ivt+0x7a00
774 /////////////////////////////////////////////////////////////////////
775 // 0x7a00 Entry 62 (size 16 bundles) Reserved
778 .org kvm_ia64_ivt+0x7b00
779 /////////////////////////////////////////////////////////////////////
780 // 0x7b00 Entry 63 (size 16 bundles) Reserved
783 .org kvm_ia64_ivt+0x7c00
784 ////////////////////////////////////////////////////////////////////
785 // 0x7c00 Entry 64 (size 16 bundles) Reserved
788 .org kvm_ia64_ivt+0x7d00
789 /////////////////////////////////////////////////////////////////////
790 // 0x7d00 Entry 65 (size 16 bundles) Reserved
793 .org kvm_ia64_ivt+0x7e00
794 /////////////////////////////////////////////////////////////////////
795 // 0x7e00 Entry 66 (size 16 bundles) Reserved
798 .org kvm_ia64_ivt+0x7f00
799 ////////////////////////////////////////////////////////////////////
800 // 0x7f00 Entry 67 (size 16 bundles) Reserved
803 .org kvm_ia64_ivt+0x8000
804 // There is no particular reason for this code to be here, other than that
805 // there happens to be space here that would go unused otherwise. If this
806 // fault ever gets "unreserved", simply moved the following code to a more
810 ENTRY(kvm_dtlb_miss_dispatch)
812 KVM_SAVE_MIN_WITH_COVER_R19
813 alloc r14=ar.pfs,0,0,3,0
816 adds r3=8,r2 // set up second base pointer
820 srlz.i // guarantee that interruption collection is on
822 (p15) ssm psr.i // restore psr.i
823 addl r14=@gprel(ia64_leave_hypervisor_prepare),gp
830 br.call.sptk.many b6=kvm_page_fault
831 END(kvm_dtlb_miss_dispatch)
833 ENTRY(kvm_itlb_miss_dispatch)
835 KVM_SAVE_MIN_WITH_COVER_R19
836 alloc r14=ar.pfs,0,0,3,0
839 adds r3=8,r2 // set up second base pointer
843 srlz.i // guarantee that interruption collection is on
845 (p15) ssm psr.i // restore psr.i
846 addl r14=@gprel(ia64_leave_hypervisor),gp
852 br.call.sptk.many b6=kvm_page_fault
853 END(kvm_itlb_miss_dispatch)
855 ENTRY(kvm_dispatch_reflection)
859 * r19: intr type (offset into ivt, see ia64_int.h)
860 * r31: contains saved predicates (pr)
862 KVM_SAVE_MIN_WITH_COVER_R19
863 alloc r14=ar.pfs,0,0,5,0
868 adds r3=8,r2 // set up second base pointer
872 srlz.i // guarantee that interruption collection is on
874 (p15) ssm psr.i // restore psr.i
875 addl r14=@gprel(ia64_leave_hypervisor),gp
881 br.call.sptk.many b6=reflect_interruption
882 END(kvm_dispatch_reflection)
884 ENTRY(kvm_dispatch_virtualization_fault)
885 adds r16 = VMM_VCPU_CAUSE_OFFSET,r21
886 adds r17 = VMM_VCPU_OPCODE_OFFSET,r21
891 KVM_SAVE_MIN_WITH_COVER_R19
893 alloc r14=ar.pfs,0,0,2,0 // (must be first in insn group!)
895 adds r3=8,r2 // set up second base pointer
899 srlz.i // guarantee that interruption collection is on
901 (p15) ssm psr.i // restore psr.i
902 addl r14=@gprel(ia64_leave_hypervisor_prepare),gp
908 adds out1=16,sp //regs
909 br.call.sptk.many b6=kvm_emulate
910 END(kvm_dispatch_virtualization_fault)
913 ENTRY(kvm_dispatch_interrupt)
914 KVM_SAVE_MIN_WITH_COVER_R19 // uses r31; defines r2 and r3
916 alloc r14=ar.pfs,0,0,1,0 // must be first in an insn group
917 adds r3=8,r2 // set up second base pointer for SAVE_REST
924 addl r14=@gprel(ia64_leave_hypervisor),gp
929 mov out0=r13 // pass pointer to pt_regs as second arg
930 br.call.sptk.many b6=kvm_ia64_handle_irq
931 END(kvm_dispatch_interrupt)
933 GLOBAL_ENTRY(ia64_leave_nested)
936 adds r21=PT(PR)+16,r12
938 lfetch [r21],PT(CR_IPSR)-PT(PR)
939 adds r2=PT(B6)+16,r12
940 adds r3=PT(R16)+16,r12
943 ld8 r28=[r2],8 // load b6
944 adds r29=PT(R24)+16,r12
947 adds r3=PT(AR_CSD)-PT(R16),r3
948 adds r30=PT(AR_CCV)+16,r12
951 ld8 r15=[r30] // load ar.ccv
953 ld8 r29=[r2],16 // load b7
954 ld8 r30=[r3],16 // load ar.csd
956 ld8 r31=[r2],16 // load ar.ssd
960 ld8.fill r10=[r3],PT(R17)-PT(R10)
962 ld8.fill r11=[r2],PT(R18)-PT(R11)
974 // initiate turning off of interrupt and interruption collection
975 invala // invalidate ALAT
993 ld8.fill r31=[r2],PT(F9)-PT(R31)
994 adds r3=PT(F10)-PT(F6),r3
996 ldf.fill f9=[r2],PT(F6)-PT(F9)
997 ldf.fill f10=[r3],PT(F8)-PT(F10)
999 ldf.fill f6=[r2],PT(F7)-PT(F6)
1001 ldf.fill f7=[r2],PT(F11)-PT(F7)
1004 srlz.i // ensure interruption collection is off
1007 bsw.0 // switch back to bank 0 (no stop bit required beforehand...)
1012 adds r16=PT(CR_IPSR)+16,r12
1013 adds r17=PT(CR_IIP)+16,r12
1015 ld8 r29=[r16],16 // load cr.ipsr
1016 ld8 r28=[r17],16 // load cr.iip
1018 ld8 r30=[r16],16 // load cr.ifs
1019 ld8 r25=[r17],16 // load ar.unat
1021 ld8 r26=[r16],16 // load ar.pfs
1022 ld8 r27=[r17],16 // load ar.rsc
1024 // set p9 to indicate that we should restore cr.ifs
1026 ld8 r24=[r16],16 // load ar.rnat (may be garbage)
1027 ld8 r23=[r17],16// load ar.bspstore (may be garbage)
1029 ld8 r31=[r16],16 // load predicates
1030 ld8 r22=[r17],16 // load b0
1032 ld8 r19=[r16],16 // load ar.rsc value for "loadrs"
1033 ld8.fill r1=[r17],16 // load r1
1035 ld8.fill r12=[r16],16
1036 ld8.fill r13=[r17],16
1038 ld8 r20=[r16],16 // ar.fpsr
1039 ld8.fill r15=[r17],16
1041 ld8.fill r14=[r16],16
1046 mov r16=ar.bsp // get existing backing store pointer
1059 END(ia64_leave_nested)
1061 GLOBAL_ENTRY(ia64_leave_hypervisor_prepare)
1063 * work.need_resched etc. mustn't get changed
1064 *by this CPU before it returns to
1065 * user- or fsys-mode, hence we disable interrupts early on:
1067 adds r2 = PT(R4)+16,r12
1068 adds r3 = PT(R5)+16,r12
1069 adds r8 = PT(EML_UNAT)+16,r12
1075 ld8.fill r4=[r2],16 //load r4
1076 ld8.fill r5=[r3],16 //load r5
1078 ld8.fill r6=[r2] //load r6
1079 ld8.fill r7=[r3] //load r7
1081 END(ia64_leave_hypervisor_prepare)
1083 GLOBAL_ENTRY(ia64_leave_hypervisor)
1086 br.call.sptk.many b0=leave_hypervisor_tail
1088 adds r20=PT(PR)+16,r12
1089 adds r8=PT(EML_UNAT)+16,r12
1095 lfetch [r20],PT(CR_IPSR)-PT(PR)
1096 adds r2 = PT(B6)+16,r12
1097 adds r3 = PT(B7)+16,r12
1101 ld8 r24=[r2],16 /* B6 */
1102 ld8 r25=[r3],16 /* B7 */
1104 ld8 r26=[r2],16 /* ar_csd */
1105 ld8 r27=[r3],16 /* ar_ssd */
1115 ld8.fill r10=[r2],PT(R15)-PT(R10)
1116 ld8.fill r11=[r3],PT(R14)-PT(R11)
1118 ld8.fill r15=[r2],PT(R16)-PT(R15)
1119 ld8.fill r14=[r3],PT(R17)-PT(R14)
1121 ld8.fill r16=[r2],16
1122 ld8.fill r17=[r3],16
1124 ld8.fill r18=[r2],16
1125 ld8.fill r19=[r3],16
1127 ld8.fill r20=[r2],16
1128 ld8.fill r21=[r3],16
1130 ld8.fill r22=[r2],16
1131 ld8.fill r23=[r3],16
1133 ld8.fill r24=[r2],16
1134 ld8.fill r25=[r3],16
1136 ld8.fill r26=[r2],16
1137 ld8.fill r27=[r3],16
1139 ld8.fill r28=[r2],16
1140 ld8.fill r29=[r3],16
1142 ld8.fill r30=[r2],PT(F6)-PT(R30)
1143 ld8.fill r31=[r3],PT(F7)-PT(R31)
1146 // initiate turning off of interrupt and interruption collection
1147 invala // invalidate ALAT
1149 srlz.i // ensure interruption collection is off
1153 adds r16 = PT(CR_IPSR)+16,r12
1154 adds r17 = PT(CR_IIP)+16,r12
1155 mov r21=r13 // get current
1157 ld8 r31=[r16],16 // load cr.ipsr
1158 ld8 r30=[r17],16 // load cr.iip
1160 ld8 r29=[r16],16 // load cr.ifs
1161 ld8 r28=[r17],16 // load ar.unat
1163 ld8 r27=[r16],16 // load ar.pfs
1164 ld8 r26=[r17],16 // load ar.rsc
1166 ld8 r25=[r16],16 // load ar.rnat
1167 ld8 r24=[r17],16 // load ar.bspstore
1169 ld8 r23=[r16],16 // load predicates
1170 ld8 r22=[r17],16 // load b0
1172 ld8 r20=[r16],16 // load ar.rsc value for "loadrs"
1173 ld8.fill r1=[r17],16 //load r1
1175 ld8.fill r12=[r16],16 //load r12
1176 ld8.fill r13=[r17],PT(R2)-PT(R13) //load r13
1178 ld8 r19=[r16],PT(R3)-PT(AR_FPSR) //load ar_fpsr
1179 ld8.fill r2=[r17],PT(AR_CCV)-PT(R2) //load r2
1181 ld8.fill r3=[r16] //load r3
1182 ld8 r18=[r17] //load ar_ccv
1191 kvm_dont_preserve_current_frame:
1193 * To prevent leaking bits between the hypervisor and guest domain,
1194 * we must clear the stacked registers in the "invalid" partition here.
1195 * 5 registers/cycle on McKinley).
1197 # define pRecurse p6
1201 alloc loc0=ar.pfs,2,Nregs-2,2,0
1202 shr.u loc1=r18,9 // RNaTslots <= floor(dirtySize / (64*8))
1203 sub r19=r19,r18 // r19 = (physStackedSize + 8) - dirtySize
1205 mov ar.rsc=r20 // load ar.rsc to be used for "loadrs"
1206 shladd in0=loc1,3,r19
1210 kvm_rse_clear_invalid:
1211 alloc loc0=ar.pfs,2,Nregs-2,2,0
1212 cmp.lt pRecurse,p0=Nregs*8,in0
1213 // if more than Nregs regs left to clear, (re)curse
1214 add out0=-Nregs*8,in0
1215 add out1=1,in1 // increment recursion count
1224 (pRecurse) br.call.dptk.few b0=kvm_rse_clear_invalid
1228 cmp.ne pReturn,p0=r0,in1
1229 // if recursion count != 0, we need to do a br.ret
1232 (pReturn) br.ret.dptk.many b0
1237 // loadrs has already been shifted
1238 alloc r16=ar.pfs,0,0,0,0 // drop current register frame
1252 adds r18=VMM_VPD_BASE_OFFSET,r21
1255 adds r17=VMM_VCPU_ISR_OFFSET,r21
1258 adds r19=VMM_VPD_VPSR_OFFSET,r18
1260 ld8 r19=[r19] //vpsr
1262 adds r16= VMM_VCPU_GP_OFFSET,r21
1264 ld8 r16= [r16] // Put gp in r24
1265 movl r24=@gprel(ia64_vmm_entry) // calculate return address
1269 br.sptk.many kvm_vps_sync_write // call the service
1271 END(ia64_leave_hypervisor)
1273 GLOBAL_ENTRY(ia64_vmm_entry)
1285 tbit.nz p1,p2 = r19,IA64_PSR_IC_BIT // p1=vpsr.ic
1286 (p1) br.cond.sptk.few kvm_vps_resume_normal
1287 (p2) br.cond.sptk.many kvm_vps_resume_handler
1292 * extern u64 ia64_call_vsa(u64 proc, u64 arg1, u64 arg2,
1293 * u64 arg3, u64 arg4, u64 arg5,
1294 * u64 arg6, u64 arg7);
1296 * XXX: The currently defined services use only 4 args at the max. The
1297 * rest are not consumed.
1299 GLOBAL_ENTRY(ia64_call_vsa)
1308 alloc pfssave=ar.pfs,4,4,0,0
1310 adds entry=VMM_VCPU_VSA_BASE_OFFSET, r13
1314 mov r25=in1 // copy arguments
1319 tbit.nz p6,p0=psrsave,14 // IA64_PSR_I
1320 tbit.nz p7,p0=psrsave,13 // IA64_PSR_IC
1322 add hostret=2f-1b,hostret // calculate return address
1329 br.cond.sptk b6 // call the service
1331 // Architectural sequence for enabling interrupts if necessary
1347 #define INIT_BSPSTORE ((4<<30)-(12<<20)-0x100)
1349 GLOBAL_ENTRY(vmm_reset_entry)
1350 //set up ipsr, iip, vpd.vpsr, dcr
1351 // For IPSR: it/dt/rt=1, i/ic=1, si=1, vm/bn=1
1352 // For DCR: all bits 0
1356 adds r14=-VMM_PT_REGS_SIZE, r12
1358 movl r6=0x501008826000 // IPSR dt/rt/it:1;i/ic:1, si:1, vm/bn:1
1359 movl r10=0x8000000000000000
1360 adds r16=PT(CR_IIP), r14
1361 adds r20=PT(R1), r14
1376 ld8 r4 = [r16] // Set init iip for first run.
1380 adds r16=VMM_VPD_BASE_OFFSET,r13
1384 adds r19=VMM_VPD_VPSR_OFFSET,r18
1390 br.cond.sptk ia64_vmm_entry
1392 END(vmm_reset_entry)