45c5eb67da
This reduces host CPU usage when the guest is idle. However, the guest must set MSR[WE] in its idle loop, which Linux did not do until 2.6.26. Signed-off-by: Hollis Blanchard <hollisb@us.ibm.com> Signed-off-by: Jerone Young <jyoung5@us.ibm.com> Signed-off-by: Avi Kivity <avi@qumranet.com>
153 lines
3 KiB
C
153 lines
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/timer.h>
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#include <linux/types.h>
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#include <linux/kvm_types.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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/* We don't currently support large pages. */
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#define KVM_PAGES_PER_HPAGE (1<<31)
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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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};
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struct tlbe {
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u32 tid; /* Only the low 8 bits are used. */
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u32 word0;
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u32 word1;
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u32 word2;
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};
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struct kvm_arch {
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};
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struct kvm_vcpu_arch {
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/* Unmodified copy of the guest's TLB. */
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struct tlbe guest_tlb[PPC44x_TLB_SIZE];
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/* TLB that's actually used when the guest is running. */
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struct tlbe shadow_tlb[PPC44x_TLB_SIZE];
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/* Pages which are referenced in the shadow TLB. */
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struct page *shadow_pages[PPC44x_TLB_SIZE];
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/* Copy of the host's TLB. */
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struct tlbe host_tlb[PPC44x_TLB_SIZE];
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u32 host_stack;
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u32 host_pid;
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u64 fpr[32];
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u32 gpr[32];
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u32 pc;
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u32 cr;
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u32 ctr;
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u32 lr;
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u32 xer;
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u32 msr;
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u32 mmucr;
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u32 sprg0;
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u32 sprg1;
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u32 sprg2;
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u32 sprg3;
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u32 sprg4;
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u32 sprg5;
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u32 sprg6;
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u32 sprg7;
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u32 srr0;
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u32 srr1;
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u32 csrr0;
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u32 csrr1;
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u32 dsrr0;
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u32 dsrr1;
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u32 dear;
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u32 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[16];
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u32 ivpr;
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u32 pir;
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u32 pid;
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u32 pvr;
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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 last_inst;
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u32 fault_dear;
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u32 fault_esr;
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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 dcr_needed;
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u8 dcr_is_write;
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u32 cpr0_cfgaddr; /* holds the last set cpr0_cfgaddr */
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struct timer_list dec_timer;
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unsigned long pending_exceptions;
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};
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struct kvm_guest_debug {
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int enabled;
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unsigned long bp[4];
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int singlestep;
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};
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#endif /* __POWERPC_KVM_HOST_H__ */
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