| lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC | |
|
Open Source and information security mailing list archives
| ||
|
Date: Thu, 17 Apr 2008 12:10:41 +0300 From: Avi Kivity <avi@...ranet.com> To: kvm-devel@...ts.sourceforge.net Cc: linux-kernel@...r.kernel.org, Xiantao Zhang <xiantao.zhang@...el.com> Subject: [PATCH 36/45] KVM: ia64: Add interruption vector table for vmm From: Xiantao Zhang <xiantao.zhang@...el.com> vmm_ivt.S includes an ivt for vmm use. Signed-off-by: Anthony Xu <anthony.xu@...el.com> Signed-off-by: Xiantao Zhang <xiantao.zhang@...el.com> Signed-off-by: Avi Kivity <avi@...ranet.com> --- arch/ia64/kvm/vmm_ivt.S | 1424 +++++++++++++++++++++++++++++++++++++++++++++++ 1 files changed, 1424 insertions(+), 0 deletions(-) create mode 100644 arch/ia64/kvm/vmm_ivt.S diff --git a/arch/ia64/kvm/vmm_ivt.S b/arch/ia64/kvm/vmm_ivt.S new file mode 100644 index 0000000..3ee5f48 --- /dev/null +++ b/arch/ia64/kvm/vmm_ivt.S @@ -0,0 +1,1424 @@ +/* + * /ia64/kvm_ivt.S + * + * Copyright (C) 1998-2001, 2003 Hewlett-Packard Co + * Stephane Eranian <eranian@....hp.com> + * David Mosberger <davidm@....hp.com> + * Copyright (C) 2000, 2002-2003 Intel Co + * Asit Mallick <asit.k.mallick@...el.com> + * Suresh Siddha <suresh.b.siddha@...el.com> + * Kenneth Chen <kenneth.w.chen@...el.com> + * Fenghua Yu <fenghua.yu@...el.com> + * + * + * 00/08/23 Asit Mallick <asit.k.mallick@...el.com> TLB handling + * for SMP + * 00/12/20 David Mosberger-Tang <davidm@....hp.com> DTLB/ITLB + * handler now uses virtual PT. + * + * 07/6/20 Xuefei Xu (Anthony Xu) (anthony.xu@...el.com) + * Supporting Intel virtualization architecture + * + */ + +/* + * This file defines the interruption vector table used by the CPU. + * It does not include one entry per possible cause of interruption. + * + * The first 20 entries of the table contain 64 bundles each while the + * remaining 48 entries contain only 16 bundles each. + * + * The 64 bundles are used to allow inlining the whole handler for + * critical + * interruptions like TLB misses. + * + * For each entry, the comment is as follows: + * + * // 0x1c00 Entry 7 (size 64 bundles) Data Key Miss + * (12,51) + * entry offset ----/ / / / + * / + * entry number ---------/ / / + * / + * size of the entry -------------/ / + * / + * vector name -------------------------------------/ + * / + * interruptions triggering this vector + * ----------------------/ + * + * The table is 32KB in size and must be aligned on 32KB + * boundary. + * (The CPU ignores the 15 lower bits of the address) + * + * Table is based upon EAS2.6 (Oct 1999) + */ + + +#include <asm/asmmacro.h> +#include <asm/cache.h> +#include <asm/pgtable.h> + +#include "asm-offsets.h" +#include "vcpu.h" +#include "kvm_minstate.h" +#include "vti.h" + +#if 1 +# define PSR_DEFAULT_BITS psr.ac +#else +# define PSR_DEFAULT_BITS 0 +#endif + + +#define KVM_FAULT(n) \ + kvm_fault_##n:; \ + mov r19=n;; \ + br.sptk.many kvm_fault_##n; \ + ;; \ + + +#define KVM_REFLECT(n) \ + mov r31=pr; \ + mov r19=n; /* prepare to save predicates */ \ + mov r29=cr.ipsr; \ + ;; \ + tbit.z p6,p7=r29,IA64_PSR_VM_BIT; \ +(p7)br.sptk.many kvm_dispatch_reflection; \ + br.sptk.many kvm_panic; \ + + +GLOBAL_ENTRY(kvm_panic) + br.sptk.many kvm_panic + ;; +END(kvm_panic) + + + + + + .section .text.ivt,"ax" + + .align 32768 // align on 32KB boundary + .global kvm_ia64_ivt +kvm_ia64_ivt: +/////////////////////////////////////////////////////////////// +// 0x0000 Entry 0 (size 64 bundles) VHPT Translation (8,20,47) +ENTRY(kvm_vhpt_miss) + KVM_FAULT(0) +END(kvm_vhpt_miss) + + + .org kvm_ia64_ivt+0x400 +//////////////////////////////////////////////////////////////// +// 0x0400 Entry 1 (size 64 bundles) ITLB (21) +ENTRY(kvm_itlb_miss) + mov r31 = pr + mov r29=cr.ipsr; + ;; + tbit.z p6,p7=r29,IA64_PSR_VM_BIT; + (p6) br.sptk kvm_alt_itlb_miss + mov r19 = 1 + br.sptk kvm_itlb_miss_dispatch + KVM_FAULT(1); +END(kvm_itlb_miss) + + .org kvm_ia64_ivt+0x0800 +////////////////////////////////////////////////////////////////// +// 0x0800 Entry 2 (size 64 bundles) DTLB (9,48) +ENTRY(kvm_dtlb_miss) + mov r31 = pr + mov r29=cr.ipsr; + ;; + tbit.z p6,p7=r29,IA64_PSR_VM_BIT; +(p6)br.sptk kvm_alt_dtlb_miss + br.sptk kvm_dtlb_miss_dispatch +END(kvm_dtlb_miss) + + .org kvm_ia64_ivt+0x0c00 +//////////////////////////////////////////////////////////////////// +// 0x0c00 Entry 3 (size 64 bundles) Alt ITLB (19) +ENTRY(kvm_alt_itlb_miss) + mov r16=cr.ifa // get address that caused the TLB miss + ;; + movl r17=PAGE_KERNEL + mov r24=cr.ipsr + movl r19=(((1 << IA64_MAX_PHYS_BITS) - 1) & ~0xfff) + ;; + and r19=r19,r16 // clear ed, reserved bits, and PTE control bits + ;; + or r19=r17,r19 // insert PTE control bits into r19 + ;; + movl r20=IA64_GRANULE_SHIFT<<2 + ;; + mov cr.itir=r20 + ;; + itc.i r19 // insert the TLB entry + mov pr=r31,-1 + rfi +END(kvm_alt_itlb_miss) + + .org kvm_ia64_ivt+0x1000 +///////////////////////////////////////////////////////////////////// +// 0x1000 Entry 4 (size 64 bundles) Alt DTLB (7,46) +ENTRY(kvm_alt_dtlb_miss) + mov r16=cr.ifa // get address that caused the TLB miss + ;; + movl r17=PAGE_KERNEL + movl r19=(((1 << IA64_MAX_PHYS_BITS) - 1) & ~0xfff) + mov r24=cr.ipsr + ;; + and r19=r19,r16 // clear ed, reserved bits, and PTE control bits + ;; + or r19=r19,r17 // insert PTE control bits into r19 + ;; + movl r20=IA64_GRANULE_SHIFT<<2 + ;; + mov cr.itir=r20 + ;; + itc.d r19 // insert the TLB entry + mov pr=r31,-1 + rfi +END(kvm_alt_dtlb_miss) + + .org kvm_ia64_ivt+0x1400 +////////////////////////////////////////////////////////////////////// +// 0x1400 Entry 5 (size 64 bundles) Data nested TLB (6,45) +ENTRY(kvm_nested_dtlb_miss) + KVM_FAULT(5) +END(kvm_nested_dtlb_miss) + + .org kvm_ia64_ivt+0x1800 +///////////////////////////////////////////////////////////////////// +// 0x1800 Entry 6 (size 64 bundles) Instruction Key Miss (24) +ENTRY(kvm_ikey_miss) + KVM_REFLECT(6) +END(kvm_ikey_miss) + + .org kvm_ia64_ivt+0x1c00 +///////////////////////////////////////////////////////////////////// +// 0x1c00 Entry 7 (size 64 bundles) Data Key Miss (12,51) +ENTRY(kvm_dkey_miss) + KVM_REFLECT(7) +END(kvm_dkey_miss) + + .org kvm_ia64_ivt+0x2000 +//////////////////////////////////////////////////////////////////// +// 0x2000 Entry 8 (size 64 bundles) Dirty-bit (54) +ENTRY(kvm_dirty_bit) + KVM_REFLECT(8) +END(kvm_dirty_bit) + + .org kvm_ia64_ivt+0x2400 +//////////////////////////////////////////////////////////////////// +// 0x2400 Entry 9 (size 64 bundles) Instruction Access-bit (27) +ENTRY(kvm_iaccess_bit) + KVM_REFLECT(9) +END(kvm_iaccess_bit) + + .org kvm_ia64_ivt+0x2800 +/////////////////////////////////////////////////////////////////// +// 0x2800 Entry 10 (size 64 bundles) Data Access-bit (15,55) +ENTRY(kvm_daccess_bit) + KVM_REFLECT(10) +END(kvm_daccess_bit) + + .org kvm_ia64_ivt+0x2c00 +///////////////////////////////////////////////////////////////// +// 0x2c00 Entry 11 (size 64 bundles) Break instruction (33) +ENTRY(kvm_break_fault) + mov r31=pr + mov r19=11 + mov r29=cr.ipsr + ;; + KVM_SAVE_MIN_WITH_COVER_R19 + ;; + alloc r14=ar.pfs,0,0,4,0 // now it's safe (must be first in insn group!) + mov out0=cr.ifa + mov out2=cr.isr // FIXME: pity to make this slow access twice + mov out3=cr.iim // FIXME: pity to make this slow access twice + adds r3=8,r2 // set up second base pointer + ;; + ssm psr.ic + ;; + srlz.i // guarantee that interruption collection is on + ;; + //(p15)ssm psr.i // restore psr.i + addl r14=@...el(ia64_leave_hypervisor),gp + ;; + KVM_SAVE_REST + mov rp=r14 + ;; + adds out1=16,sp + br.call.sptk.many b6=kvm_ia64_handle_break + ;; +END(kvm_break_fault) + + .org kvm_ia64_ivt+0x3000 +///////////////////////////////////////////////////////////////// +// 0x3000 Entry 12 (size 64 bundles) External Interrupt (4) +ENTRY(kvm_interrupt) + mov r31=pr // prepare to save predicates + mov r19=12 + mov r29=cr.ipsr + ;; + tbit.z p6,p7=r29,IA64_PSR_VM_BIT + tbit.z p0,p15=r29,IA64_PSR_I_BIT + ;; +(p7) br.sptk kvm_dispatch_interrupt + ;; + mov r27=ar.rsc /* M */ + mov r20=r1 /* A */ + mov r25=ar.unat /* M */ + mov r26=ar.pfs /* I */ + mov r28=cr.iip /* M */ + cover /* B (or nothing) */ + ;; + mov r1=sp + ;; + invala /* M */ + mov r30=cr.ifs + ;; + addl r1=-VMM_PT_REGS_SIZE,r1 + ;; + adds r17=2*L1_CACHE_BYTES,r1 /* really: biggest cache-line size */ + adds r16=PT(CR_IPSR),r1 + ;; + lfetch.fault.excl.nt1 [r17],L1_CACHE_BYTES + st8 [r16]=r29 /* save cr.ipsr */ + ;; + lfetch.fault.excl.nt1 [r17] + mov r29=b0 + ;; + adds r16=PT(R8),r1 /* initialize first base pointer */ + adds r17=PT(R9),r1 /* initialize second base pointer */ + mov r18=r0 /* make sure r18 isn't NaT */ + ;; +.mem.offset 0,0; st8.spill [r16]=r8,16 +.mem.offset 8,0; st8.spill [r17]=r9,16 + ;; +.mem.offset 0,0; st8.spill [r16]=r10,24 +.mem.offset 8,0; st8.spill [r17]=r11,24 + ;; + st8 [r16]=r28,16 /* save cr.iip */ + st8 [r17]=r30,16 /* save cr.ifs */ + mov r8=ar.fpsr /* M */ + mov r9=ar.csd + mov r10=ar.ssd + movl r11=FPSR_DEFAULT /* L-unit */ + ;; + st8 [r16]=r25,16 /* save ar.unat */ + st8 [r17]=r26,16 /* save ar.pfs */ + shl r18=r18,16 /* compute ar.rsc to be used for "loadrs" */ + ;; + st8 [r16]=r27,16 /* save ar.rsc */ + adds r17=16,r17 /* skip over ar_rnat field */ + ;; + st8 [r17]=r31,16 /* save predicates */ + adds r16=16,r16 /* skip over ar_bspstore field */ + ;; + st8 [r16]=r29,16 /* save b0 */ + st8 [r17]=r18,16 /* save ar.rsc value for "loadrs" */ + ;; +.mem.offset 0,0; st8.spill [r16]=r20,16 /* save original r1 */ +.mem.offset 8,0; st8.spill [r17]=r12,16 + adds r12=-16,r1 + /* switch to kernel memory stack (with 16 bytes of scratch) */ + ;; +.mem.offset 0,0; st8.spill [r16]=r13,16 +.mem.offset 8,0; st8.spill [r17]=r8,16 /* save ar.fpsr */ + ;; +.mem.offset 0,0; st8.spill [r16]=r15,16 +.mem.offset 8,0; st8.spill [r17]=r14,16 + dep r14=-1,r0,60,4 + ;; +.mem.offset 0,0; st8.spill [r16]=r2,16 +.mem.offset 8,0; st8.spill [r17]=r3,16 + adds r2=VMM_PT_REGS_R16_OFFSET,r1 + adds r14 = VMM_VCPU_GP_OFFSET,r13 + ;; + mov r8=ar.ccv + ld8 r14 = [r14] + ;; + mov r1=r14 /* establish kernel global pointer */ + ;; \ + bsw.1 + ;; + alloc r14=ar.pfs,0,0,1,0 // must be first in an insn group + mov out0=r13 + ;; + ssm psr.ic + ;; + srlz.i + ;; + //(p15) ssm psr.i + adds r3=8,r2 // set up second base pointer for SAVE_REST + srlz.i // ensure everybody knows psr.ic is back on + ;; +.mem.offset 0,0; st8.spill [r2]=r16,16 +.mem.offset 8,0; st8.spill [r3]=r17,16 + ;; +.mem.offset 0,0; st8.spill [r2]=r18,16 +.mem.offset 8,0; st8.spill [r3]=r19,16 + ;; +.mem.offset 0,0; st8.spill [r2]=r20,16 +.mem.offset 8,0; st8.spill [r3]=r21,16 + mov r18=b6 + ;; +.mem.offset 0,0; st8.spill [r2]=r22,16 +.mem.offset 8,0; st8.spill [r3]=r23,16 + mov r19=b7 + ;; +.mem.offset 0,0; st8.spill [r2]=r24,16 +.mem.offset 8,0; st8.spill [r3]=r25,16 + ;; +.mem.offset 0,0; st8.spill [r2]=r26,16 +.mem.offset 8,0; st8.spill [r3]=r27,16 + ;; +.mem.offset 0,0; st8.spill [r2]=r28,16 +.mem.offset 8,0; st8.spill [r3]=r29,16 + ;; +.mem.offset 0,0; st8.spill [r2]=r30,16 +.mem.offset 8,0; st8.spill [r3]=r31,32 + ;; + mov ar.fpsr=r11 /* M-unit */ + st8 [r2]=r8,8 /* ar.ccv */ + adds r24=PT(B6)-PT(F7),r3 + ;; + stf.spill [r2]=f6,32 + stf.spill [r3]=f7,32 + ;; + stf.spill [r2]=f8,32 + stf.spill [r3]=f9,32 + ;; + stf.spill [r2]=f10 + stf.spill [r3]=f11 + adds r25=PT(B7)-PT(F11),r3 + ;; + st8 [r24]=r18,16 /* b6 */ + st8 [r25]=r19,16 /* b7 */ + ;; + st8 [r24]=r9 /* ar.csd */ + st8 [r25]=r10 /* ar.ssd */ + ;; + srlz.d // make sure we see the effect of cr.ivr + addl r14=@...el(ia64_leave_nested),gp + ;; + mov rp=r14 + br.call.sptk.many b6=kvm_ia64_handle_irq + ;; +END(kvm_interrupt) + + .global kvm_dispatch_vexirq + .org kvm_ia64_ivt+0x3400 +////////////////////////////////////////////////////////////////////// +// 0x3400 Entry 13 (size 64 bundles) Reserved +ENTRY(kvm_virtual_exirq) + mov r31=pr + mov r19=13 + mov r30 =r0 + ;; +kvm_dispatch_vexirq: + cmp.eq p6,p0 = 1,r30 + ;; +(p6)add r29 = VMM_VCPU_SAVED_GP_OFFSET,r21 + ;; +(p6)ld8 r1 = [r29] + ;; + KVM_SAVE_MIN_WITH_COVER_R19 + alloc r14=ar.pfs,0,0,1,0 + mov out0=r13 + + ssm psr.ic + ;; + srlz.i // guarantee that interruption collection is on + ;; + //(p15) ssm psr.i // restore psr.i + adds r3=8,r2 // set up second base pointer + ;; + KVM_SAVE_REST + addl r14=@...el(ia64_leave_hypervisor),gp + ;; + mov rp=r14 + br.call.sptk.many b6=kvm_vexirq +END(kvm_virtual_exirq) + + .org kvm_ia64_ivt+0x3800 +///////////////////////////////////////////////////////////////////// +// 0x3800 Entry 14 (size 64 bundles) Reserved + KVM_FAULT(14) + // this code segment is from 2.6.16.13 + + + .org kvm_ia64_ivt+0x3c00 +/////////////////////////////////////////////////////////////////////// +// 0x3c00 Entry 15 (size 64 bundles) Reserved + KVM_FAULT(15) + + + .org kvm_ia64_ivt+0x4000 +/////////////////////////////////////////////////////////////////////// +// 0x4000 Entry 16 (size 64 bundles) Reserved + KVM_FAULT(16) + + .org kvm_ia64_ivt+0x4400 +////////////////////////////////////////////////////////////////////// +// 0x4400 Entry 17 (size 64 bundles) Reserved + KVM_FAULT(17) + + .org kvm_ia64_ivt+0x4800 +////////////////////////////////////////////////////////////////////// +// 0x4800 Entry 18 (size 64 bundles) Reserved + KVM_FAULT(18) + + .org kvm_ia64_ivt+0x4c00 +////////////////////////////////////////////////////////////////////// +// 0x4c00 Entry 19 (size 64 bundles) Reserved + KVM_FAULT(19) + + .org kvm_ia64_ivt+0x5000 +////////////////////////////////////////////////////////////////////// +// 0x5000 Entry 20 (size 16 bundles) Page Not Present +ENTRY(kvm_page_not_present) + KVM_REFLECT(20) +END(kvm_page_not_present) + + .org kvm_ia64_ivt+0x5100 +/////////////////////////////////////////////////////////////////////// +// 0x5100 Entry 21 (size 16 bundles) Key Permission vector +ENTRY(kvm_key_permission) + KVM_REFLECT(21) +END(kvm_key_permission) + + .org kvm_ia64_ivt+0x5200 +////////////////////////////////////////////////////////////////////// +// 0x5200 Entry 22 (size 16 bundles) Instruction Access Rights (26) +ENTRY(kvm_iaccess_rights) + KVM_REFLECT(22) +END(kvm_iaccess_rights) + + .org kvm_ia64_ivt+0x5300 +////////////////////////////////////////////////////////////////////// +// 0x5300 Entry 23 (size 16 bundles) Data Access Rights (14,53) +ENTRY(kvm_daccess_rights) + KVM_REFLECT(23) +END(kvm_daccess_rights) + + .org kvm_ia64_ivt+0x5400 +///////////////////////////////////////////////////////////////////// +// 0x5400 Entry 24 (size 16 bundles) General Exception (5,32,34,36,38,39) +ENTRY(kvm_general_exception) + KVM_REFLECT(24) + KVM_FAULT(24) +END(kvm_general_exception) + + .org kvm_ia64_ivt+0x5500 +////////////////////////////////////////////////////////////////////// +// 0x5500 Entry 25 (size 16 bundles) Disabled FP-Register (35) +ENTRY(kvm_disabled_fp_reg) + KVM_REFLECT(25) +END(kvm_disabled_fp_reg) + + .org kvm_ia64_ivt+0x5600 +//////////////////////////////////////////////////////////////////// +// 0x5600 Entry 26 (size 16 bundles) Nat Consumption (11,23,37,50) +ENTRY(kvm_nat_consumption) + KVM_REFLECT(26) +END(kvm_nat_consumption) + + .org kvm_ia64_ivt+0x5700 +///////////////////////////////////////////////////////////////////// +// 0x5700 Entry 27 (size 16 bundles) Speculation (40) +ENTRY(kvm_speculation_vector) + KVM_REFLECT(27) +END(kvm_speculation_vector) + + .org kvm_ia64_ivt+0x5800 +///////////////////////////////////////////////////////////////////// +// 0x5800 Entry 28 (size 16 bundles) Reserved + KVM_FAULT(28) + + .org kvm_ia64_ivt+0x5900 +/////////////////////////////////////////////////////////////////// +// 0x5900 Entry 29 (size 16 bundles) Debug (16,28,56) +ENTRY(kvm_debug_vector) + KVM_FAULT(29) +END(kvm_debug_vector) + + .org kvm_ia64_ivt+0x5a00 +/////////////////////////////////////////////////////////////// +// 0x5a00 Entry 30 (size 16 bundles) Unaligned Reference (57) +ENTRY(kvm_unaligned_access) + KVM_REFLECT(30) +END(kvm_unaligned_access) + + .org kvm_ia64_ivt+0x5b00 +////////////////////////////////////////////////////////////////////// +// 0x5b00 Entry 31 (size 16 bundles) Unsupported Data Reference (57) +ENTRY(kvm_unsupported_data_reference) + KVM_REFLECT(31) +END(kvm_unsupported_data_reference) + + .org kvm_ia64_ivt+0x5c00 +//////////////////////////////////////////////////////////////////// +// 0x5c00 Entry 32 (size 16 bundles) Floating Point FAULT (65) +ENTRY(kvm_floating_point_fault) + KVM_REFLECT(32) +END(kvm_floating_point_fault) + + .org kvm_ia64_ivt+0x5d00 +///////////////////////////////////////////////////////////////////// +// 0x5d00 Entry 33 (size 16 bundles) Floating Point Trap (66) +ENTRY(kvm_floating_point_trap) + KVM_REFLECT(33) +END(kvm_floating_point_trap) + + .org kvm_ia64_ivt+0x5e00 +////////////////////////////////////////////////////////////////////// +// 0x5e00 Entry 34 (size 16 bundles) Lower Privilege Transfer Trap (66) +ENTRY(kvm_lower_privilege_trap) + KVM_REFLECT(34) +END(kvm_lower_privilege_trap) + + .org kvm_ia64_ivt+0x5f00 +////////////////////////////////////////////////////////////////////// +// 0x5f00 Entry 35 (size 16 bundles) Taken Branch Trap (68) +ENTRY(kvm_taken_branch_trap) + KVM_REFLECT(35) +END(kvm_taken_branch_trap) + + .org kvm_ia64_ivt+0x6000 +//////////////////////////////////////////////////////////////////// +// 0x6000 Entry 36 (size 16 bundles) Single Step Trap (69) +ENTRY(kvm_single_step_trap) + KVM_REFLECT(36) +END(kvm_single_step_trap) + .global kvm_virtualization_fault_back + .org kvm_ia64_ivt+0x6100 +///////////////////////////////////////////////////////////////////// +// 0x6100 Entry 37 (size 16 bundles) Virtualization Fault +ENTRY(kvm_virtualization_fault) + mov r31=pr + adds r16 = VMM_VCPU_SAVED_GP_OFFSET,r21 + ;; + st8 [r16] = r1 + adds r17 = VMM_VCPU_GP_OFFSET, r21 + ;; + ld8 r1 = [r17] + cmp.eq p6,p0=EVENT_MOV_FROM_AR,r24 + cmp.eq p7,p0=EVENT_MOV_FROM_RR,r24 + cmp.eq p8,p0=EVENT_MOV_TO_RR,r24 + cmp.eq p9,p0=EVENT_RSM,r24 + cmp.eq p10,p0=EVENT_SSM,r24 + cmp.eq p11,p0=EVENT_MOV_TO_PSR,r24 + cmp.eq p12,p0=EVENT_THASH,r24 + (p6) br.dptk.many kvm_asm_mov_from_ar + (p7) br.dptk.many kvm_asm_mov_from_rr + (p8) br.dptk.many kvm_asm_mov_to_rr + (p9) br.dptk.many kvm_asm_rsm + (p10) br.dptk.many kvm_asm_ssm + (p11) br.dptk.many kvm_asm_mov_to_psr + (p12) br.dptk.many kvm_asm_thash + ;; +kvm_virtualization_fault_back: + adds r16 = VMM_VCPU_SAVED_GP_OFFSET,r21 + ;; + ld8 r1 = [r16] + ;; + mov r19=37 + adds r16 = VMM_VCPU_CAUSE_OFFSET,r21 + adds r17 = VMM_VCPU_OPCODE_OFFSET,r21 + ;; + st8 [r16] = r24 + st8 [r17] = r25 + ;; + cmp.ne p6,p0=EVENT_RFI, r24 + (p6) br.sptk kvm_dispatch_virtualization_fault + ;; + adds r18=VMM_VPD_BASE_OFFSET,r21 + ;; + ld8 r18=[r18] + ;; + adds r18=VMM_VPD_VIFS_OFFSET,r18 + ;; + ld8 r18=[r18] + ;; + tbit.z p6,p0=r18,63 + (p6) br.sptk kvm_dispatch_virtualization_fault + ;; + //if vifs.v=1 desert current register frame + alloc r18=ar.pfs,0,0,0,0 + br.sptk kvm_dispatch_virtualization_fault +END(kvm_virtualization_fault) + + .org kvm_ia64_ivt+0x6200 +////////////////////////////////////////////////////////////// +// 0x6200 Entry 38 (size 16 bundles) Reserved + KVM_FAULT(38) + + .org kvm_ia64_ivt+0x6300 +///////////////////////////////////////////////////////////////// +// 0x6300 Entry 39 (size 16 bundles) Reserved + KVM_FAULT(39) + + .org kvm_ia64_ivt+0x6400 +///////////////////////////////////////////////////////////////// +// 0x6400 Entry 40 (size 16 bundles) Reserved + KVM_FAULT(40) + + .org kvm_ia64_ivt+0x6500 +////////////////////////////////////////////////////////////////// +// 0x6500 Entry 41 (size 16 bundles) Reserved + KVM_FAULT(41) + + .org kvm_ia64_ivt+0x6600 +////////////////////////////////////////////////////////////////// +// 0x6600 Entry 42 (size 16 bundles) Reserved + KVM_FAULT(42) + + .org kvm_ia64_ivt+0x6700 +////////////////////////////////////////////////////////////////// +// 0x6700 Entry 43 (size 16 bundles) Reserved + KVM_FAULT(43) + + .org kvm_ia64_ivt+0x6800 +////////////////////////////////////////////////////////////////// +// 0x6800 Entry 44 (size 16 bundles) Reserved + KVM_FAULT(44) + + .org kvm_ia64_ivt+0x6900 +/////////////////////////////////////////////////////////////////// +// 0x6900 Entry 45 (size 16 bundles) IA-32 Exeception +//(17,18,29,41,42,43,44,58,60,61,62,72,73,75,76,77) +ENTRY(kvm_ia32_exception) + KVM_FAULT(45) +END(kvm_ia32_exception) + + .org kvm_ia64_ivt+0x6a00 +//////////////////////////////////////////////////////////////////// +// 0x6a00 Entry 46 (size 16 bundles) IA-32 Intercept (30,31,59,70,71) +ENTRY(kvm_ia32_intercept) + KVM_FAULT(47) +END(kvm_ia32_intercept) + + .org kvm_ia64_ivt+0x6c00 +///////////////////////////////////////////////////////////////////// +// 0x6c00 Entry 48 (size 16 bundles) Reserved + KVM_FAULT(48) + + .org kvm_ia64_ivt+0x6d00 +////////////////////////////////////////////////////////////////////// +// 0x6d00 Entry 49 (size 16 bundles) Reserved + KVM_FAULT(49) + + .org kvm_ia64_ivt+0x6e00 +////////////////////////////////////////////////////////////////////// +// 0x6e00 Entry 50 (size 16 bundles) Reserved + KVM_FAULT(50) + + .org kvm_ia64_ivt+0x6f00 +///////////////////////////////////////////////////////////////////// +// 0x6f00 Entry 51 (size 16 bundles) Reserved + KVM_FAULT(52) + + .org kvm_ia64_ivt+0x7100 +//////////////////////////////////////////////////////////////////// +// 0x7100 Entry 53 (size 16 bundles) Reserved + KVM_FAULT(53) + + .org kvm_ia64_ivt+0x7200 +///////////////////////////////////////////////////////////////////// +// 0x7200 Entry 54 (size 16 bundles) Reserved + KVM_FAULT(54) + + .org kvm_ia64_ivt+0x7300 +//////////////////////////////////////////////////////////////////// +// 0x7300 Entry 55 (size 16 bundles) Reserved + KVM_FAULT(55) + + .org kvm_ia64_ivt+0x7400 +//////////////////////////////////////////////////////////////////// +// 0x7400 Entry 56 (size 16 bundles) Reserved + KVM_FAULT(56) + + .org kvm_ia64_ivt+0x7500 +///////////////////////////////////////////////////////////////////// +// 0x7500 Entry 57 (size 16 bundles) Reserved + KVM_FAULT(57) + + .org kvm_ia64_ivt+0x7600 +///////////////////////////////////////////////////////////////////// +// 0x7600 Entry 58 (size 16 bundles) Reserved + KVM_FAULT(58) + + .org kvm_ia64_ivt+0x7700 +//////////////////////////////////////////////////////////////////// +// 0x7700 Entry 59 (size 16 bundles) Reserved + KVM_FAULT(59) + + .org kvm_ia64_ivt+0x7800 +//////////////////////////////////////////////////////////////////// +// 0x7800 Entry 60 (size 16 bundles) Reserved + KVM_FAULT(60) + + .org kvm_ia64_ivt+0x7900 +///////////////////////////////////////////////////////////////////// +// 0x7900 Entry 61 (size 16 bundles) Reserved + KVM_FAULT(61) + + .org kvm_ia64_ivt+0x7a00 +///////////////////////////////////////////////////////////////////// +// 0x7a00 Entry 62 (size 16 bundles) Reserved + KVM_FAULT(62) + + .org kvm_ia64_ivt+0x7b00 +///////////////////////////////////////////////////////////////////// +// 0x7b00 Entry 63 (size 16 bundles) Reserved + KVM_FAULT(63) + + .org kvm_ia64_ivt+0x7c00 +//////////////////////////////////////////////////////////////////// +// 0x7c00 Entry 64 (size 16 bundles) Reserved + KVM_FAULT(64) + + .org kvm_ia64_ivt+0x7d00 +///////////////////////////////////////////////////////////////////// +// 0x7d00 Entry 65 (size 16 bundles) Reserved + KVM_FAULT(65) + + .org kvm_ia64_ivt+0x7e00 +///////////////////////////////////////////////////////////////////// +// 0x7e00 Entry 66 (size 16 bundles) Reserved + KVM_FAULT(66) + + .org kvm_ia64_ivt+0x7f00 +//////////////////////////////////////////////////////////////////// +// 0x7f00 Entry 67 (size 16 bundles) Reserved + KVM_FAULT(67) + + .org kvm_ia64_ivt+0x8000 +// There is no particular reason for this code to be here, other than that +// there happens to be space here that would go unused otherwise. If this +// fault ever gets "unreserved", simply moved the following code to a more +// suitable spot... + + +ENTRY(kvm_dtlb_miss_dispatch) + mov r19 = 2 + KVM_SAVE_MIN_WITH_COVER_R19 + alloc r14=ar.pfs,0,0,3,0 + mov out0=cr.ifa + mov out1=r15 + adds r3=8,r2 // set up second base pointer + ;; + ssm psr.ic + ;; + srlz.i // guarantee that interruption collection is on + ;; + //(p15) ssm psr.i // restore psr.i + addl r14=@...el(ia64_leave_hypervisor_prepare),gp + ;; + KVM_SAVE_REST + KVM_SAVE_EXTRA + mov rp=r14 + ;; + adds out2=16,r12 + br.call.sptk.many b6=kvm_page_fault +END(kvm_dtlb_miss_dispatch) + +ENTRY(kvm_itlb_miss_dispatch) + + KVM_SAVE_MIN_WITH_COVER_R19 + alloc r14=ar.pfs,0,0,3,0 + mov out0=cr.ifa + mov out1=r15 + adds r3=8,r2 // set up second base pointer + ;; + ssm psr.ic + ;; + srlz.i // guarantee that interruption collection is on + ;; + //(p15) ssm psr.i // restore psr.i + addl r14=@...el(ia64_leave_hypervisor),gp + ;; + KVM_SAVE_REST + mov rp=r14 + ;; + adds out2=16,r12 + br.call.sptk.many b6=kvm_page_fault +END(kvm_itlb_miss_dispatch) + +ENTRY(kvm_dispatch_reflection) + /* + * Input: + * psr.ic: off + * r19: intr type (offset into ivt, see ia64_int.h) + * r31: contains saved predicates (pr) + */ + KVM_SAVE_MIN_WITH_COVER_R19 + alloc r14=ar.pfs,0,0,5,0 + mov out0=cr.ifa + mov out1=cr.isr + mov out2=cr.iim + mov out3=r15 + adds r3=8,r2 // set up second base pointer + ;; + ssm psr.ic + ;; + srlz.i // guarantee that interruption collection is on + ;; + //(p15) ssm psr.i // restore psr.i + addl r14=@...el(ia64_leave_hypervisor),gp + ;; + KVM_SAVE_REST + mov rp=r14 + ;; + adds out4=16,r12 + br.call.sptk.many b6=reflect_interruption +END(kvm_dispatch_reflection) + +ENTRY(kvm_dispatch_virtualization_fault) + adds r16 = VMM_VCPU_CAUSE_OFFSET,r21 + adds r17 = VMM_VCPU_OPCODE_OFFSET,r21 + ;; + st8 [r16] = r24 + st8 [r17] = r25 + ;; + KVM_SAVE_MIN_WITH_COVER_R19 + ;; + alloc r14=ar.pfs,0,0,2,0 // now it's safe (must be first in insn group!) + mov out0=r13 //vcpu + adds r3=8,r2 // set up second base pointer + ;; + ssm psr.ic + ;; + srlz.i // guarantee that interruption collection is on + ;; + //(p15) ssm psr.i // restore psr.i + addl r14=@...el(ia64_leave_hypervisor_prepare),gp + ;; + KVM_SAVE_REST + KVM_SAVE_EXTRA + mov rp=r14 + ;; + adds out1=16,sp //regs + br.call.sptk.many b6=kvm_emulate +END(kvm_dispatch_virtualization_fault) + + +ENTRY(kvm_dispatch_interrupt) + KVM_SAVE_MIN_WITH_COVER_R19 // uses r31; defines r2 and r3 + ;; + alloc r14=ar.pfs,0,0,1,0 // must be first in an insn group + //mov out0=cr.ivr // pass cr.ivr as first arg + adds r3=8,r2 // set up second base pointer for SAVE_REST + ;; + ssm psr.ic + ;; + srlz.i + ;; + //(p15) ssm psr.i + addl r14=@...el(ia64_leave_hypervisor),gp + ;; + KVM_SAVE_REST + mov rp=r14 + ;; + mov out0=r13 // pass pointer to pt_regs as second arg + br.call.sptk.many b6=kvm_ia64_handle_irq +END(kvm_dispatch_interrupt) + + + + +GLOBAL_ENTRY(ia64_leave_nested) + rsm psr.i + ;; + adds r21=PT(PR)+16,r12 + ;; + lfetch [r21],PT(CR_IPSR)-PT(PR) + adds r2=PT(B6)+16,r12 + adds r3=PT(R16)+16,r12 + ;; + lfetch [r21] + ld8 r28=[r2],8 // load b6 + adds r29=PT(R24)+16,r12 + + ld8.fill r16=[r3] + adds r3=PT(AR_CSD)-PT(R16),r3 + adds r30=PT(AR_CCV)+16,r12 + ;; + ld8.fill r24=[r29] + ld8 r15=[r30] // load ar.ccv + ;; + ld8 r29=[r2],16 // load b7 + ld8 r30=[r3],16 // load ar.csd + ;; + ld8 r31=[r2],16 // load ar.ssd + ld8.fill r8=[r3],16 + ;; + ld8.fill r9=[r2],16 + ld8.fill r10=[r3],PT(R17)-PT(R10) + ;; + ld8.fill r11=[r2],PT(R18)-PT(R11) + ld8.fill r17=[r3],16 + ;; + ld8.fill r18=[r2],16 + ld8.fill r19=[r3],16 + ;; + ld8.fill r20=[r2],16 + ld8.fill r21=[r3],16 + mov ar.csd=r30 + mov ar.ssd=r31 + ;; + rsm psr.i | psr.ic + // initiate turning off of interrupt and interruption collection + invala // invalidate ALAT + ;; + srlz.i + ;; + ld8.fill r22=[r2],24 + ld8.fill r23=[r3],24 + mov b6=r28 + ;; + ld8.fill r25=[r2],16 + ld8.fill r26=[r3],16 + mov b7=r29 + ;; + ld8.fill r27=[r2],16 + ld8.fill r28=[r3],16 + ;; + ld8.fill r29=[r2],16 + ld8.fill r30=[r3],24 + ;; + ld8.fill r31=[r2],PT(F9)-PT(R31) + adds r3=PT(F10)-PT(F6),r3 + ;; + ldf.fill f9=[r2],PT(F6)-PT(F9) + ldf.fill f10=[r3],PT(F8)-PT(F10) + ;; + ldf.fill f6=[r2],PT(F7)-PT(F6) + ;; + ldf.fill f7=[r2],PT(F11)-PT(F7) + ldf.fill f8=[r3],32 + ;; + srlz.i // ensure interruption collection is off + mov ar.ccv=r15 + ;; + bsw.0 // switch back to bank 0 (no stop bit required beforehand...) + ;; + ldf.fill f11=[r2] +// mov r18=r13 +// mov r21=r13 + adds r16=PT(CR_IPSR)+16,r12 + adds r17=PT(CR_IIP)+16,r12 + ;; + ld8 r29=[r16],16 // load cr.ipsr + ld8 r28=[r17],16 // load cr.iip + ;; + ld8 r30=[r16],16 // load cr.ifs + ld8 r25=[r17],16 // load ar.unat + ;; + ld8 r26=[r16],16 // load ar.pfs + ld8 r27=[r17],16 // load ar.rsc + cmp.eq p9,p0=r0,r0 + // set p9 to indicate that we should restore cr.ifs + ;; + ld8 r24=[r16],16 // load ar.rnat (may be garbage) + ld8 r23=[r17],16// load ar.bspstore (may be garbage) + ;; + ld8 r31=[r16],16 // load predicates + ld8 r22=[r17],16 // load b0 + ;; + ld8 r19=[r16],16 // load ar.rsc value for "loadrs" + ld8.fill r1=[r17],16 // load r1 + ;; + ld8.fill r12=[r16],16 + ld8.fill r13=[r17],16 + ;; + ld8 r20=[r16],16 // ar.fpsr + ld8.fill r15=[r17],16 + ;; + ld8.fill r14=[r16],16 + ld8.fill r2=[r17] + ;; + ld8.fill r3=[r16] + ;; + mov r16=ar.bsp // get existing backing store pointer + ;; + mov b0=r22 + mov ar.pfs=r26 + mov cr.ifs=r30 + mov cr.ipsr=r29 + mov ar.fpsr=r20 + mov cr.iip=r28 + ;; + mov ar.rsc=r27 + mov ar.unat=r25 + mov pr=r31,-1 + rfi +END(ia64_leave_nested) + + + +GLOBAL_ENTRY(ia64_leave_hypervisor_prepare) + /* + * work.need_resched etc. mustn't get changed + *by this CPU before it returns to + ;; + * user- or fsys-mode, hence we disable interrupts early on: + */ + adds r2 = PT(R4)+16,r12 + adds r3 = PT(R5)+16,r12 + adds r8 = PT(EML_UNAT)+16,r12 + ;; + ld8 r8 = [r8] + ;; + mov ar.unat=r8 + ;; + ld8.fill r4=[r2],16 //load r4 + ld8.fill r5=[r3],16 //load r5 + ;; + ld8.fill r6=[r2] //load r6 + ld8.fill r7=[r3] //load r7 + ;; +END(ia64_leave_hypervisor_prepare) +//fall through +GLOBAL_ENTRY(ia64_leave_hypervisor) + rsm psr.i + ;; + br.call.sptk.many b0=leave_hypervisor_tail + ;; + adds r20=PT(PR)+16,r12 + adds r8=PT(EML_UNAT)+16,r12 + ;; + ld8 r8=[r8] + ;; + mov ar.unat=r8 + ;; + lfetch [r20],PT(CR_IPSR)-PT(PR) + adds r2 = PT(B6)+16,r12 + adds r3 = PT(B7)+16,r12 + ;; + lfetch [r20] + ;; + ld8 r24=[r2],16 /* B6 */ + ld8 r25=[r3],16 /* B7 */ + ;; + ld8 r26=[r2],16 /* ar_csd */ + ld8 r27=[r3],16 /* ar_ssd */ + mov b6 = r24 + ;; + ld8.fill r8=[r2],16 + ld8.fill r9=[r3],16 + mov b7 = r25 + ;; + mov ar.csd = r26 + mov ar.ssd = r27 + ;; + ld8.fill r10=[r2],PT(R15)-PT(R10) + ld8.fill r11=[r3],PT(R14)-PT(R11) + ;; + ld8.fill r15=[r2],PT(R16)-PT(R15) + ld8.fill r14=[r3],PT(R17)-PT(R14) + ;; + ld8.fill r16=[r2],16 + ld8.fill r17=[r3],16 + ;; + ld8.fill r18=[r2],16 + ld8.fill r19=[r3],16 + ;; + ld8.fill r20=[r2],16 + ld8.fill r21=[r3],16 + ;; + ld8.fill r22=[r2],16 + ld8.fill r23=[r3],16 + ;; + ld8.fill r24=[r2],16 + ld8.fill r25=[r3],16 + ;; + ld8.fill r26=[r2],16 + ld8.fill r27=[r3],16 + ;; + ld8.fill r28=[r2],16 + ld8.fill r29=[r3],16 + ;; + ld8.fill r30=[r2],PT(F6)-PT(R30) + ld8.fill r31=[r3],PT(F7)-PT(R31) + ;; + rsm psr.i | psr.ic + // initiate turning off of interrupt and interruption collection + invala // invalidate ALAT + ;; + srlz.i // ensure interruption collection is off + ;; + bsw.0 + ;; + adds r16 = PT(CR_IPSR)+16,r12 + adds r17 = PT(CR_IIP)+16,r12 + mov r21=r13 // get current + ;; + ld8 r31=[r16],16 // load cr.ipsr + ld8 r30=[r17],16 // load cr.iip + ;; + ld8 r29=[r16],16 // load cr.ifs + ld8 r28=[r17],16 // load ar.unat + ;; + ld8 r27=[r16],16 // load ar.pfs + ld8 r26=[r17],16 // load ar.rsc + ;; + ld8 r25=[r16],16 // load ar.rnat + ld8 r24=[r17],16 // load ar.bspstore + ;; + ld8 r23=[r16],16 // load predicates + ld8 r22=[r17],16 // load b0 + ;; + ld8 r20=[r16],16 // load ar.rsc value for "loadrs" + ld8.fill r1=[r17],16 //load r1 + ;; + ld8.fill r12=[r16],16 //load r12 + ld8.fill r13=[r17],PT(R2)-PT(R13) //load r13 + ;; + ld8 r19=[r16],PT(R3)-PT(AR_FPSR) //load ar_fpsr + ld8.fill r2=[r17],PT(AR_CCV)-PT(R2) //load r2 + ;; + ld8.fill r3=[r16] //load r3 + ld8 r18=[r17] //load ar_ccv + ;; + mov ar.fpsr=r19 + mov ar.ccv=r18 + shr.u r18=r20,16 + ;; +kvm_rbs_switch: + mov r19=96 + +kvm_dont_preserve_current_frame: +/* + * To prevent leaking bits between the hypervisor and guest domain, + * we must clear the stacked registers in the "invalid" partition here. + * 5 registers/cycle on McKinley). + */ +# define pRecurse p6 +# define pReturn p7 +# define Nregs 14 + + alloc loc0=ar.pfs,2,Nregs-2,2,0 + shr.u loc1=r18,9 // RNaTslots <= floor(dirtySize / (64*8)) + sub r19=r19,r18 // r19 = (physStackedSize + 8) - dirtySize + ;; + mov ar.rsc=r20 // load ar.rsc to be used for "loadrs" + shladd in0=loc1,3,r19 + mov in1=0 + ;; + TEXT_ALIGN(32) +kvm_rse_clear_invalid: + alloc loc0=ar.pfs,2,Nregs-2,2,0 + cmp.lt pRecurse,p0=Nregs*8,in0 + // if more than Nregs regs left to clear, (re)curse + add out0=-Nregs*8,in0 + add out1=1,in1 // increment recursion count + mov loc1=0 + mov loc2=0 + ;; + mov loc3=0 + mov loc4=0 + mov loc5=0 + mov loc6=0 + mov loc7=0 +(pRecurse) br.call.dptk.few b0=kvm_rse_clear_invalid + ;; + mov loc8=0 + mov loc9=0 + cmp.ne pReturn,p0=r0,in1 + // if recursion count != 0, we need to do a br.ret + mov loc10=0 + mov loc11=0 +(pReturn) br.ret.dptk.many b0 + +# undef pRecurse +# undef pReturn + +// loadrs has already been shifted + alloc r16=ar.pfs,0,0,0,0 // drop current register frame + ;; + loadrs + ;; + mov ar.bspstore=r24 + ;; + mov ar.unat=r28 + mov ar.rnat=r25 + mov ar.rsc=r26 + ;; + mov cr.ipsr=r31 + mov cr.iip=r30 + mov cr.ifs=r29 + mov ar.pfs=r27 + adds r18=VMM_VPD_BASE_OFFSET,r21 + ;; + ld8 r18=[r18] //vpd + adds r17=VMM_VCPU_ISR_OFFSET,r21 + ;; + ld8 r17=[r17] + adds r19=VMM_VPD_VPSR_OFFSET,r18 + ;; + ld8 r19=[r19] //vpsr + adds r20=VMM_VCPU_VSA_BASE_OFFSET,r21 + ;; + ld8 r20=[r20] + ;; +//vsa_sync_write_start + mov r25=r18 + adds r16= VMM_VCPU_GP_OFFSET,r21 + ;; + ld8 r16= [r16] // Put gp in r24 + movl r24=@...el(ia64_vmm_entry) // calculate return address + ;; + add r24=r24,r16 + ;; + add r16=PAL_VPS_SYNC_WRITE,r20 + ;; + mov b0=r16 + br.cond.sptk b0 // call the service + ;; +END(ia64_leave_hypervisor) +// fall through +GLOBAL_ENTRY(ia64_vmm_entry) +/* + * must be at bank 0 + * parameter: + * r17:cr.isr + * r18:vpd + * r19:vpsr + * r20:__vsa_base + * r22:b0 + * r23:predicate + */ + mov r24=r22 + mov r25=r18 + tbit.nz p1,p2 = r19,IA64_PSR_IC_BIT // p1=vpsr.ic + ;; + (p1) add r29=PAL_VPS_RESUME_NORMAL,r20 + (p1) br.sptk.many ia64_vmm_entry_out + ;; + tbit.nz p1,p2 = r17,IA64_ISR_IR_BIT //p1=cr.isr.ir + ;; + (p1) add r29=PAL_VPS_RESUME_NORMAL,r20 + (p2) add r29=PAL_VPS_RESUME_HANDLER,r20 + (p2) ld8 r26=[r25] + ;; +ia64_vmm_entry_out: + mov pr=r23,-2 + mov b0=r29 + ;; + br.cond.sptk b0 // call pal service +END(ia64_vmm_entry) + + + +/* + * extern u64 ia64_call_vsa(u64 proc, u64 arg1, u64 arg2, + * u64 arg3, u64 arg4, u64 arg5, + * u64 arg6, u64 arg7); + * + * XXX: The currently defined services use only 4 args at the max. The + * rest are not consumed. + */ +GLOBAL_ENTRY(ia64_call_vsa) + .regstk 4,4,0,0 + +rpsave = loc0 +pfssave = loc1 +psrsave = loc2 +entry = loc3 +hostret = r24 + + alloc pfssave=ar.pfs,4,4,0,0 + mov rpsave=rp + adds entry=VMM_VCPU_VSA_BASE_OFFSET, r13 + ;; + ld8 entry=[entry] +1: mov hostret=ip + mov r25=in1 // copy arguments + mov r26=in2 + mov r27=in3 + mov psrsave=psr + ;; + tbit.nz p6,p0=psrsave,14 // IA64_PSR_I + tbit.nz p7,p0=psrsave,13 // IA64_PSR_IC + ;; + add hostret=2f-1b,hostret // calculate return address + add entry=entry,in0 + ;; + rsm psr.i | psr.ic + ;; + srlz.i + mov b6=entry + br.cond.sptk b6 // call the service +2: + // Architectural sequence for enabling interrupts if necessary +(p7) ssm psr.ic + ;; +(p7) srlz.i + ;; +//(p6) ssm psr.i + ;; + mov rp=rpsave + mov ar.pfs=pfssave + mov r8=r31 + ;; + srlz.d + br.ret.sptk rp + +END(ia64_call_vsa) + +#define INIT_BSPSTORE ((4<<30)-(12<<20)-0x100) + +GLOBAL_ENTRY(vmm_reset_entry) + //set up ipsr, iip, vpd.vpsr, dcr + // For IPSR: it/dt/rt=1, i/ic=1, si=1, vm/bn=1 + // For DCR: all bits 0 + adds r14=-VMM_PT_REGS_SIZE, r12 + ;; + movl r6=0x501008826000 // IPSR dt/rt/it:1;i/ic:1, si:1, vm/bn:1 + movl r10=0x8000000000000000 + adds r16=PT(CR_IIP), r14 + adds r20=PT(R1), r14 + ;; + rsm psr.ic | psr.i + ;; + srlz.i + ;; + bsw.0 + ;; + mov r21 =r13 + ;; + bsw.1 + ;; + mov ar.rsc = 0 + ;; + flushrs + ;; + mov ar.bspstore = 0 + // clear BSPSTORE + ;; + mov cr.ipsr=r6 + mov cr.ifs=r10 + ld8 r4 = [r16] // Set init iip for first run. + ld8 r1 = [r20] + ;; + mov cr.iip=r4 + ;; + adds r16=VMM_VPD_BASE_OFFSET,r13 + adds r20=VMM_VCPU_VSA_BASE_OFFSET,r13 + ;; + ld8 r18=[r16] + ld8 r20=[r20] + ;; + adds r19=VMM_VPD_VPSR_OFFSET,r18 + ;; + ld8 r19=[r19] + mov r17=r0 + mov r22=r0 + mov r23=r0 + br.cond.sptk ia64_vmm_entry + br.ret.sptk b0 +END(vmm_reset_entry) -- 1.5.5 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
Powered by blists - more mailing lists