362c1055e5
Currently, the interrupt enable bit is cleared when in the vmm. This patch sets the bit and the external interrupts can be dealt with when in the vmm. This improves the I/O performance. Signed-off-by: Yang Zhang <yang.zhang@intel.com> Signed-off-by: Avi Kivity <avi@redhat.com>
1393 lines
34 KiB
ArmAsm
1393 lines
34 KiB
ArmAsm
/*
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* arch/ia64/kvm/vmm_ivt.S
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*
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* Copyright (C) 1998-2001, 2003 Hewlett-Packard Co
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* Stephane Eranian <eranian@hpl.hp.com>
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* David Mosberger <davidm@hpl.hp.com>
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* Copyright (C) 2000, 2002-2003 Intel Co
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* Asit Mallick <asit.k.mallick@intel.com>
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* Suresh Siddha <suresh.b.siddha@intel.com>
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* Kenneth Chen <kenneth.w.chen@intel.com>
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* Fenghua Yu <fenghua.yu@intel.com>
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*
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*
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* 00/08/23 Asit Mallick <asit.k.mallick@intel.com> TLB handling
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* for SMP
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* 00/12/20 David Mosberger-Tang <davidm@hpl.hp.com> DTLB/ITLB
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* handler now uses virtual PT.
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*
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* 07/6/20 Xuefei Xu (Anthony Xu) (anthony.xu@intel.com)
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* Supporting Intel virtualization architecture
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*
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*/
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/*
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* This file defines the interruption vector table used by the CPU.
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* It does not include one entry per possible cause of interruption.
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*
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* The first 20 entries of the table contain 64 bundles each while the
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* remaining 48 entries contain only 16 bundles each.
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*
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* The 64 bundles are used to allow inlining the whole handler for
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* critical
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* interruptions like TLB misses.
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*
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* For each entry, the comment is as follows:
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*
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* // 0x1c00 Entry 7 (size 64 bundles) Data Key Miss
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* (12,51)
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* entry offset ----/ / / /
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* /
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* entry number ---------/ / /
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* /
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* size of the entry -------------/ /
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* /
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* vector name -------------------------------------/
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* /
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* interruptions triggering this vector
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* ----------------------/
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*
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* The table is 32KB in size and must be aligned on 32KB
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* boundary.
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* (The CPU ignores the 15 lower bits of the address)
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*
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* Table is based upon EAS2.6 (Oct 1999)
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*/
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#include <asm/asmmacro.h>
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#include <asm/cache.h>
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#include <asm/pgtable.h>
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#include "asm-offsets.h"
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#include "vcpu.h"
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#include "kvm_minstate.h"
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#include "vti.h"
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#if 1
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# define PSR_DEFAULT_BITS psr.ac
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#else
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# define PSR_DEFAULT_BITS 0
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#endif
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#define KVM_FAULT(n) \
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kvm_fault_##n:; \
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mov r19=n;; \
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br.sptk.many kvm_vmm_panic; \
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;; \
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#define KVM_REFLECT(n) \
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mov r31=pr; \
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mov r19=n; /* prepare to save predicates */ \
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mov r29=cr.ipsr; \
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;; \
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tbit.z p6,p7=r29,IA64_PSR_VM_BIT; \
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(p7) br.sptk.many kvm_dispatch_reflection; \
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br.sptk.many kvm_vmm_panic; \
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GLOBAL_ENTRY(kvm_vmm_panic)
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KVM_SAVE_MIN_WITH_COVER_R19
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alloc r14=ar.pfs,0,0,1,0
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mov out0=r15
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adds r3=8,r2 // set up second base pointer
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;;
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ssm psr.ic
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;;
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srlz.i // guarantee that interruption collection is on
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;;
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(p15) ssm psr.i // restore psr.
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addl r14=@gprel(ia64_leave_hypervisor),gp
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;;
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KVM_SAVE_REST
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mov rp=r14
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;;
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br.call.sptk.many b6=vmm_panic_handler;
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END(kvm_vmm_panic)
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.section .text.ivt,"ax"
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.align 32768 // align on 32KB boundary
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.global kvm_ia64_ivt
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kvm_ia64_ivt:
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///////////////////////////////////////////////////////////////
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// 0x0000 Entry 0 (size 64 bundles) VHPT Translation (8,20,47)
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ENTRY(kvm_vhpt_miss)
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KVM_FAULT(0)
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END(kvm_vhpt_miss)
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.org kvm_ia64_ivt+0x400
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////////////////////////////////////////////////////////////////
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// 0x0400 Entry 1 (size 64 bundles) ITLB (21)
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ENTRY(kvm_itlb_miss)
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mov r31 = pr
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mov r29=cr.ipsr;
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;;
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tbit.z p6,p7=r29,IA64_PSR_VM_BIT;
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(p6) br.sptk kvm_alt_itlb_miss
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mov r19 = 1
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br.sptk kvm_itlb_miss_dispatch
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KVM_FAULT(1);
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END(kvm_itlb_miss)
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.org kvm_ia64_ivt+0x0800
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//////////////////////////////////////////////////////////////////
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// 0x0800 Entry 2 (size 64 bundles) DTLB (9,48)
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ENTRY(kvm_dtlb_miss)
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mov r31 = pr
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mov r29=cr.ipsr;
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;;
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tbit.z p6,p7=r29,IA64_PSR_VM_BIT;
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(p6) br.sptk kvm_alt_dtlb_miss
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br.sptk kvm_dtlb_miss_dispatch
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END(kvm_dtlb_miss)
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.org kvm_ia64_ivt+0x0c00
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////////////////////////////////////////////////////////////////////
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// 0x0c00 Entry 3 (size 64 bundles) Alt ITLB (19)
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ENTRY(kvm_alt_itlb_miss)
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mov r16=cr.ifa // get address that caused the TLB miss
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;;
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movl r17=PAGE_KERNEL
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mov r24=cr.ipsr
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movl r19=(((1 << IA64_MAX_PHYS_BITS) - 1) & ~0xfff)
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;;
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and r19=r19,r16 // clear ed, reserved bits, and PTE control bits
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;;
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or r19=r17,r19 // insert PTE control bits into r19
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;;
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movl r20=IA64_GRANULE_SHIFT<<2
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;;
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mov cr.itir=r20
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;;
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itc.i r19 // insert the TLB entry
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mov pr=r31,-1
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rfi
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END(kvm_alt_itlb_miss)
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.org kvm_ia64_ivt+0x1000
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/////////////////////////////////////////////////////////////////////
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// 0x1000 Entry 4 (size 64 bundles) Alt DTLB (7,46)
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ENTRY(kvm_alt_dtlb_miss)
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mov r16=cr.ifa // get address that caused the TLB miss
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;;
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movl r17=PAGE_KERNEL
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movl r19=(((1 << IA64_MAX_PHYS_BITS) - 1) & ~0xfff)
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mov r24=cr.ipsr
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;;
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and r19=r19,r16 // clear ed, reserved bits, and PTE control bits
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;;
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or r19=r19,r17 // insert PTE control bits into r19
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;;
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movl r20=IA64_GRANULE_SHIFT<<2
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;;
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mov cr.itir=r20
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;;
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itc.d r19 // insert the TLB entry
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mov pr=r31,-1
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rfi
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END(kvm_alt_dtlb_miss)
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.org kvm_ia64_ivt+0x1400
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//////////////////////////////////////////////////////////////////////
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// 0x1400 Entry 5 (size 64 bundles) Data nested TLB (6,45)
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ENTRY(kvm_nested_dtlb_miss)
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KVM_FAULT(5)
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END(kvm_nested_dtlb_miss)
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.org kvm_ia64_ivt+0x1800
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/////////////////////////////////////////////////////////////////////
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// 0x1800 Entry 6 (size 64 bundles) Instruction Key Miss (24)
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ENTRY(kvm_ikey_miss)
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KVM_REFLECT(6)
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END(kvm_ikey_miss)
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.org kvm_ia64_ivt+0x1c00
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/////////////////////////////////////////////////////////////////////
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// 0x1c00 Entry 7 (size 64 bundles) Data Key Miss (12,51)
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ENTRY(kvm_dkey_miss)
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KVM_REFLECT(7)
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END(kvm_dkey_miss)
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.org kvm_ia64_ivt+0x2000
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////////////////////////////////////////////////////////////////////
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// 0x2000 Entry 8 (size 64 bundles) Dirty-bit (54)
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ENTRY(kvm_dirty_bit)
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KVM_REFLECT(8)
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END(kvm_dirty_bit)
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.org kvm_ia64_ivt+0x2400
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////////////////////////////////////////////////////////////////////
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// 0x2400 Entry 9 (size 64 bundles) Instruction Access-bit (27)
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ENTRY(kvm_iaccess_bit)
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KVM_REFLECT(9)
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END(kvm_iaccess_bit)
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.org kvm_ia64_ivt+0x2800
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///////////////////////////////////////////////////////////////////
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// 0x2800 Entry 10 (size 64 bundles) Data Access-bit (15,55)
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ENTRY(kvm_daccess_bit)
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KVM_REFLECT(10)
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END(kvm_daccess_bit)
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.org kvm_ia64_ivt+0x2c00
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/////////////////////////////////////////////////////////////////
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// 0x2c00 Entry 11 (size 64 bundles) Break instruction (33)
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ENTRY(kvm_break_fault)
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mov r31=pr
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mov r19=11
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mov r29=cr.ipsr
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;;
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KVM_SAVE_MIN_WITH_COVER_R19
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;;
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alloc r14=ar.pfs,0,0,4,0 //(must be first in insn group!)
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mov out0=cr.ifa
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mov out2=cr.isr // FIXME: pity to make this slow access twice
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mov out3=cr.iim // FIXME: pity to make this slow access twice
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adds r3=8,r2 // set up second base pointer
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;;
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ssm psr.ic
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;;
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srlz.i // guarantee that interruption collection is on
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;;
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(p15)ssm psr.i // restore psr.i
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addl r14=@gprel(ia64_leave_hypervisor),gp
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;;
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KVM_SAVE_REST
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mov rp=r14
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;;
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adds out1=16,sp
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br.call.sptk.many b6=kvm_ia64_handle_break
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;;
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END(kvm_break_fault)
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.org kvm_ia64_ivt+0x3000
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/////////////////////////////////////////////////////////////////
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// 0x3000 Entry 12 (size 64 bundles) External Interrupt (4)
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ENTRY(kvm_interrupt)
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mov r31=pr // prepare to save predicates
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mov r19=12
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mov r29=cr.ipsr
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;;
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tbit.z p6,p7=r29,IA64_PSR_VM_BIT
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tbit.z p0,p15=r29,IA64_PSR_I_BIT
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;;
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(p7) br.sptk kvm_dispatch_interrupt
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;;
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mov r27=ar.rsc /* M */
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mov r20=r1 /* A */
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mov r25=ar.unat /* M */
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mov r26=ar.pfs /* I */
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mov r28=cr.iip /* M */
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cover /* B (or nothing) */
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;;
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mov r1=sp
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;;
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invala /* M */
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mov r30=cr.ifs
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;;
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addl r1=-VMM_PT_REGS_SIZE,r1
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;;
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adds r17=2*L1_CACHE_BYTES,r1 /* really: biggest cache-line size */
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adds r16=PT(CR_IPSR),r1
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;;
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lfetch.fault.excl.nt1 [r17],L1_CACHE_BYTES
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st8 [r16]=r29 /* save cr.ipsr */
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;;
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lfetch.fault.excl.nt1 [r17]
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mov r29=b0
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;;
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adds r16=PT(R8),r1 /* initialize first base pointer */
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adds r17=PT(R9),r1 /* initialize second base pointer */
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mov r18=r0 /* make sure r18 isn't NaT */
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;;
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.mem.offset 0,0; st8.spill [r16]=r8,16
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.mem.offset 8,0; st8.spill [r17]=r9,16
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;;
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.mem.offset 0,0; st8.spill [r16]=r10,24
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.mem.offset 8,0; st8.spill [r17]=r11,24
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;;
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st8 [r16]=r28,16 /* save cr.iip */
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st8 [r17]=r30,16 /* save cr.ifs */
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mov r8=ar.fpsr /* M */
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mov r9=ar.csd
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mov r10=ar.ssd
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movl r11=FPSR_DEFAULT /* L-unit */
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;;
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st8 [r16]=r25,16 /* save ar.unat */
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st8 [r17]=r26,16 /* save ar.pfs */
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shl r18=r18,16 /* compute ar.rsc to be used for "loadrs" */
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;;
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st8 [r16]=r27,16 /* save ar.rsc */
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adds r17=16,r17 /* skip over ar_rnat field */
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;;
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st8 [r17]=r31,16 /* save predicates */
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adds r16=16,r16 /* skip over ar_bspstore field */
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;;
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st8 [r16]=r29,16 /* save b0 */
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st8 [r17]=r18,16 /* save ar.rsc value for "loadrs" */
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;;
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.mem.offset 0,0; st8.spill [r16]=r20,16 /* save original r1 */
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.mem.offset 8,0; st8.spill [r17]=r12,16
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adds r12=-16,r1
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/* switch to kernel memory stack (with 16 bytes of scratch) */
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;;
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.mem.offset 0,0; st8.spill [r16]=r13,16
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.mem.offset 8,0; st8.spill [r17]=r8,16 /* save ar.fpsr */
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;;
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.mem.offset 0,0; st8.spill [r16]=r15,16
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.mem.offset 8,0; st8.spill [r17]=r14,16
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dep r14=-1,r0,60,4
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;;
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.mem.offset 0,0; st8.spill [r16]=r2,16
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.mem.offset 8,0; st8.spill [r17]=r3,16
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adds r2=VMM_PT_REGS_R16_OFFSET,r1
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adds r14 = VMM_VCPU_GP_OFFSET,r13
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;;
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mov r8=ar.ccv
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ld8 r14 = [r14]
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;;
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mov r1=r14 /* establish kernel global pointer */
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;; \
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bsw.1
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;;
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alloc r14=ar.pfs,0,0,1,0 // must be first in an insn group
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mov out0=r13
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;;
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ssm psr.ic
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;;
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srlz.i
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;;
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//(p15) ssm psr.i
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adds r3=8,r2 // set up second base pointer for SAVE_REST
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srlz.i // ensure everybody knows psr.ic is back on
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;;
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.mem.offset 0,0; st8.spill [r2]=r16,16
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.mem.offset 8,0; st8.spill [r3]=r17,16
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;;
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.mem.offset 0,0; st8.spill [r2]=r18,16
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.mem.offset 8,0; st8.spill [r3]=r19,16
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;;
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.mem.offset 0,0; st8.spill [r2]=r20,16
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.mem.offset 8,0; st8.spill [r3]=r21,16
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mov r18=b6
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;;
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.mem.offset 0,0; st8.spill [r2]=r22,16
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.mem.offset 8,0; st8.spill [r3]=r23,16
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mov r19=b7
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;;
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.mem.offset 0,0; st8.spill [r2]=r24,16
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.mem.offset 8,0; st8.spill [r3]=r25,16
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;;
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.mem.offset 0,0; st8.spill [r2]=r26,16
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.mem.offset 8,0; st8.spill [r3]=r27,16
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;;
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.mem.offset 0,0; st8.spill [r2]=r28,16
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.mem.offset 8,0; st8.spill [r3]=r29,16
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;;
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.mem.offset 0,0; st8.spill [r2]=r30,16
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.mem.offset 8,0; st8.spill [r3]=r31,32
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;;
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mov ar.fpsr=r11 /* M-unit */
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st8 [r2]=r8,8 /* ar.ccv */
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adds r24=PT(B6)-PT(F7),r3
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;;
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stf.spill [r2]=f6,32
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stf.spill [r3]=f7,32
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;;
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stf.spill [r2]=f8,32
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stf.spill [r3]=f9,32
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;;
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stf.spill [r2]=f10
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stf.spill [r3]=f11
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adds r25=PT(B7)-PT(F11),r3
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;;
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st8 [r24]=r18,16 /* b6 */
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st8 [r25]=r19,16 /* b7 */
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;;
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st8 [r24]=r9 /* ar.csd */
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st8 [r25]=r10 /* ar.ssd */
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;;
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srlz.d // make sure we see the effect of cr.ivr
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addl r14=@gprel(ia64_leave_nested),gp
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;;
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mov rp=r14
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br.call.sptk.many b6=kvm_ia64_handle_irq
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;;
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END(kvm_interrupt)
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.global kvm_dispatch_vexirq
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.org kvm_ia64_ivt+0x3400
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//////////////////////////////////////////////////////////////////////
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// 0x3400 Entry 13 (size 64 bundles) Reserved
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ENTRY(kvm_virtual_exirq)
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mov r31=pr
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mov r19=13
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mov r30 =r0
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;;
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kvm_dispatch_vexirq:
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cmp.eq p6,p0 = 1,r30
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;;
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(p6) add r29 = VMM_VCPU_SAVED_GP_OFFSET,r21
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;;
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(p6) ld8 r1 = [r29]
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;;
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KVM_SAVE_MIN_WITH_COVER_R19
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alloc r14=ar.pfs,0,0,1,0
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mov out0=r13
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ssm psr.ic
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;;
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srlz.i // guarantee that interruption collection is on
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;;
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(p15) ssm psr.i // restore psr.i
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adds r3=8,r2 // set up second base pointer
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;;
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KVM_SAVE_REST
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addl r14=@gprel(ia64_leave_hypervisor),gp
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;;
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mov rp=r14
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br.call.sptk.many b6=kvm_vexirq
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END(kvm_virtual_exirq)
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.org kvm_ia64_ivt+0x3800
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/////////////////////////////////////////////////////////////////////
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// 0x3800 Entry 14 (size 64 bundles) Reserved
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KVM_FAULT(14)
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// this code segment is from 2.6.16.13
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.org kvm_ia64_ivt+0x3c00
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///////////////////////////////////////////////////////////////////////
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// 0x3c00 Entry 15 (size 64 bundles) Reserved
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KVM_FAULT(15)
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.org kvm_ia64_ivt+0x4000
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///////////////////////////////////////////////////////////////////////
|
|
// 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=@gprel(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=@gprel(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=@gprel(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 // (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=@gprel(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
|
|
adds r3=8,r2 // set up second base pointer for SAVE_REST
|
|
;;
|
|
ssm psr.ic
|
|
;;
|
|
srlz.i
|
|
;;
|
|
(p15) ssm psr.i
|
|
addl r14=@gprel(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
|
|
mov r25=r18
|
|
adds r16= VMM_VCPU_GP_OFFSET,r21
|
|
;;
|
|
ld8 r16= [r16] // Put gp in r24
|
|
movl r24=@gprel(ia64_vmm_entry) // calculate return address
|
|
;;
|
|
add r24=r24,r16
|
|
;;
|
|
br.sptk.many kvm_vps_sync_write // 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
|
|
* r22:b0
|
|
* r23:predicate
|
|
*/
|
|
mov r24=r22
|
|
mov r25=r18
|
|
tbit.nz p1,p2 = r19,IA64_PSR_IC_BIT // p1=vpsr.ic
|
|
(p1) br.cond.sptk.few kvm_vps_resume_normal
|
|
(p2) br.cond.sptk.many kvm_vps_resume_handler
|
|
;;
|
|
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
|
|
bsw.0
|
|
;;
|
|
mov r21 =r13
|
|
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
|
|
;;
|
|
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
|
|
;;
|
|
ld8 r18=[r16]
|
|
;;
|
|
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)
|