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a73a9599e0
When in kernel mode there are 4 additional registers available that are simple data storage. Instead of exiting to the hypervisor to read and write those, we can just share them with the guest using the page. This patch converts all users of the current field to the shared page. Signed-off-by: Alexander Graf <agraf@suse.de> Signed-off-by: Avi Kivity <avi@redhat.com>
297 lines
6.3 KiB
C
297 lines
6.3 KiB
C
/*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License, version 2, as
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* published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*
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* Copyright IBM Corp. 2007
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*
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* Authors: Hollis Blanchard <hollisb@us.ibm.com>
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*/
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#ifndef __POWERPC_KVM_HOST_H__
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#define __POWERPC_KVM_HOST_H__
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#include <linux/mutex.h>
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#include <linux/hrtimer.h>
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#include <linux/interrupt.h>
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#include <linux/types.h>
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#include <linux/kvm_types.h>
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#include <linux/kvm_para.h>
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#include <asm/kvm_asm.h>
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#define KVM_MAX_VCPUS 1
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#define KVM_MEMORY_SLOTS 32
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/* memory slots that does not exposed to userspace */
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#define KVM_PRIVATE_MEM_SLOTS 4
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#define KVM_COALESCED_MMIO_PAGE_OFFSET 1
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/* We don't currently support large pages. */
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#define KVM_HPAGE_GFN_SHIFT(x) 0
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#define KVM_NR_PAGE_SIZES 1
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#define KVM_PAGES_PER_HPAGE(x) (1UL<<31)
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#define HPTEG_CACHE_NUM (1 << 15)
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#define HPTEG_HASH_BITS_PTE 13
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#define HPTEG_HASH_BITS_VPTE 13
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#define HPTEG_HASH_BITS_VPTE_LONG 5
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#define HPTEG_HASH_NUM_PTE (1 << HPTEG_HASH_BITS_PTE)
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#define HPTEG_HASH_NUM_VPTE (1 << HPTEG_HASH_BITS_VPTE)
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#define HPTEG_HASH_NUM_VPTE_LONG (1 << HPTEG_HASH_BITS_VPTE_LONG)
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struct kvm;
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struct kvm_run;
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struct kvm_vcpu;
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struct kvm_vm_stat {
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u32 remote_tlb_flush;
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};
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struct kvm_vcpu_stat {
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u32 sum_exits;
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u32 mmio_exits;
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u32 dcr_exits;
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u32 signal_exits;
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u32 light_exits;
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/* Account for special types of light exits: */
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u32 itlb_real_miss_exits;
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u32 itlb_virt_miss_exits;
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u32 dtlb_real_miss_exits;
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u32 dtlb_virt_miss_exits;
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u32 syscall_exits;
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u32 isi_exits;
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u32 dsi_exits;
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u32 emulated_inst_exits;
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u32 dec_exits;
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u32 ext_intr_exits;
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u32 halt_wakeup;
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#ifdef CONFIG_PPC_BOOK3S
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u32 pf_storage;
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u32 pf_instruc;
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u32 sp_storage;
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u32 sp_instruc;
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u32 queue_intr;
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u32 ld;
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u32 ld_slow;
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u32 st;
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u32 st_slow;
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#endif
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};
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enum kvm_exit_types {
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MMIO_EXITS,
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DCR_EXITS,
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SIGNAL_EXITS,
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ITLB_REAL_MISS_EXITS,
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ITLB_VIRT_MISS_EXITS,
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DTLB_REAL_MISS_EXITS,
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DTLB_VIRT_MISS_EXITS,
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SYSCALL_EXITS,
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ISI_EXITS,
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DSI_EXITS,
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EMULATED_INST_EXITS,
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EMULATED_MTMSRWE_EXITS,
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EMULATED_WRTEE_EXITS,
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EMULATED_MTSPR_EXITS,
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EMULATED_MFSPR_EXITS,
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EMULATED_MTMSR_EXITS,
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EMULATED_MFMSR_EXITS,
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EMULATED_TLBSX_EXITS,
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EMULATED_TLBWE_EXITS,
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EMULATED_RFI_EXITS,
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DEC_EXITS,
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EXT_INTR_EXITS,
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HALT_WAKEUP,
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USR_PR_INST,
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FP_UNAVAIL,
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DEBUG_EXITS,
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TIMEINGUEST,
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__NUMBER_OF_KVM_EXIT_TYPES
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};
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/* allow access to big endian 32bit upper/lower parts and 64bit var */
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struct kvmppc_exit_timing {
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union {
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u64 tv64;
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struct {
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u32 tbu, tbl;
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} tv32;
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};
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};
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struct kvm_arch {
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};
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struct kvmppc_pte {
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ulong eaddr;
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u64 vpage;
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ulong raddr;
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bool may_read : 1;
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bool may_write : 1;
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bool may_execute : 1;
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};
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struct kvmppc_mmu {
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/* book3s_64 only */
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void (*slbmte)(struct kvm_vcpu *vcpu, u64 rb, u64 rs);
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u64 (*slbmfee)(struct kvm_vcpu *vcpu, u64 slb_nr);
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u64 (*slbmfev)(struct kvm_vcpu *vcpu, u64 slb_nr);
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void (*slbie)(struct kvm_vcpu *vcpu, u64 slb_nr);
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void (*slbia)(struct kvm_vcpu *vcpu);
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/* book3s */
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void (*mtsrin)(struct kvm_vcpu *vcpu, u32 srnum, ulong value);
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u32 (*mfsrin)(struct kvm_vcpu *vcpu, u32 srnum);
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int (*xlate)(struct kvm_vcpu *vcpu, gva_t eaddr, struct kvmppc_pte *pte, bool data);
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void (*reset_msr)(struct kvm_vcpu *vcpu);
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void (*tlbie)(struct kvm_vcpu *vcpu, ulong addr, bool large);
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int (*esid_to_vsid)(struct kvm_vcpu *vcpu, ulong esid, u64 *vsid);
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u64 (*ea_to_vp)(struct kvm_vcpu *vcpu, gva_t eaddr, bool data);
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bool (*is_dcbz32)(struct kvm_vcpu *vcpu);
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};
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struct hpte_cache {
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struct hlist_node list_pte;
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struct hlist_node list_vpte;
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struct hlist_node list_vpte_long;
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u64 host_va;
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u64 pfn;
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ulong slot;
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struct kvmppc_pte pte;
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};
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struct kvm_vcpu_arch {
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ulong host_stack;
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u32 host_pid;
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#ifdef CONFIG_PPC_BOOK3S
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ulong host_msr;
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ulong host_r2;
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void *host_retip;
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ulong trampoline_lowmem;
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ulong trampoline_enter;
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ulong highmem_handler;
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ulong rmcall;
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ulong host_paca_phys;
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struct kvmppc_mmu mmu;
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#endif
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ulong gpr[32];
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u64 fpr[32];
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u64 fpscr;
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#ifdef CONFIG_ALTIVEC
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vector128 vr[32];
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vector128 vscr;
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#endif
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#ifdef CONFIG_VSX
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u64 vsr[32];
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#endif
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#ifdef CONFIG_PPC_BOOK3S
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/* For Gekko paired singles */
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u32 qpr[32];
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#endif
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#ifdef CONFIG_BOOKE
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ulong pc;
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ulong ctr;
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ulong lr;
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ulong xer;
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u32 cr;
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#endif
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#ifdef CONFIG_PPC_BOOK3S
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ulong shadow_msr;
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ulong hflags;
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ulong guest_owned_ext;
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#endif
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u32 mmucr;
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ulong sprg4;
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ulong sprg5;
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ulong sprg6;
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ulong sprg7;
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ulong csrr0;
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ulong csrr1;
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ulong dsrr0;
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ulong dsrr1;
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ulong esr;
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u32 dec;
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u32 decar;
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u32 tbl;
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u32 tbu;
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u32 tcr;
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u32 tsr;
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u32 ivor[64];
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ulong ivpr;
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u32 pir;
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u32 pvr;
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u32 shadow_pid;
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u32 pid;
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u32 swap_pid;
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u32 ccr0;
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u32 ccr1;
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u32 dbcr0;
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u32 dbcr1;
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u32 dbsr;
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#ifdef CONFIG_KVM_EXIT_TIMING
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struct kvmppc_exit_timing timing_exit;
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struct kvmppc_exit_timing timing_last_enter;
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u32 last_exit_type;
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u32 timing_count_type[__NUMBER_OF_KVM_EXIT_TYPES];
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u64 timing_sum_duration[__NUMBER_OF_KVM_EXIT_TYPES];
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u64 timing_sum_quad_duration[__NUMBER_OF_KVM_EXIT_TYPES];
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u64 timing_min_duration[__NUMBER_OF_KVM_EXIT_TYPES];
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u64 timing_max_duration[__NUMBER_OF_KVM_EXIT_TYPES];
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u64 timing_last_exit;
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struct dentry *debugfs_exit_timing;
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#endif
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#ifdef CONFIG_BOOKE
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u32 last_inst;
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ulong fault_dear;
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ulong fault_esr;
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ulong queued_dear;
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ulong queued_esr;
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#endif
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gpa_t paddr_accessed;
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u8 io_gpr; /* GPR used as IO source/target */
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u8 mmio_is_bigendian;
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u8 mmio_sign_extend;
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u8 dcr_needed;
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u8 dcr_is_write;
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u8 osi_needed;
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u8 osi_enabled;
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u32 cpr0_cfgaddr; /* holds the last set cpr0_cfgaddr */
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struct hrtimer dec_timer;
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struct tasklet_struct tasklet;
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u64 dec_jiffies;
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unsigned long pending_exceptions;
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struct kvm_vcpu_arch_shared *shared;
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#ifdef CONFIG_PPC_BOOK3S
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struct hlist_head hpte_hash_pte[HPTEG_HASH_NUM_PTE];
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struct hlist_head hpte_hash_vpte[HPTEG_HASH_NUM_VPTE];
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struct hlist_head hpte_hash_vpte_long[HPTEG_HASH_NUM_VPTE_LONG];
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int hpte_cache_count;
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#endif
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};
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#endif /* __POWERPC_KVM_HOST_H__ */
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