KVM: ppc: PowerPC 440 KVM implementation
This functionality is definitely experimental, but is capable of running unmodified PowerPC 440 Linux kernels as guests on a PowerPC 440 host. (Only tested with 440EP "Bamboo" guests so far, but with appropriate userspace support other SoC/board combinations should work.) See Documentation/powerpc/kvm_440.txt for technical details. [stephen: build fix] Signed-off-by: Hollis Blanchard <hollisb@us.ibm.com> Acked-by: Paul Mackerras <paulus@samba.org> Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: Avi Kivity <avi@qumranet.com>
This commit is contained in:
Hollis Blanchard
committed by
Avi Kivity
Avi Kivity
parent
513014b717
commit
bbf45ba57e
@@ -1,6 +1,55 @@
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/*
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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 __LINUX_KVM_POWERPC_H
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#define __LINUX_KVM_POWERPC_H
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/* powerpc does not support KVM */
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#include <asm/types.h>
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#endif
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struct kvm_regs {
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__u64 pc;
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__u64 cr;
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__u64 ctr;
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__u64 lr;
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__u64 xer;
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__u64 msr;
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__u64 srr0;
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__u64 srr1;
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__u64 pid;
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__u64 sprg0;
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__u64 sprg1;
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__u64 sprg2;
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__u64 sprg3;
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__u64 sprg4;
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__u64 sprg5;
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__u64 sprg6;
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__u64 sprg7;
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__u64 gpr[32];
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};
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struct kvm_sregs {
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};
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struct kvm_fpu {
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__u64 fpr[32];
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};
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#endif /* __LINUX_KVM_POWERPC_H */
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55
include/asm-powerpc/kvm_asm.h
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55
include/asm-powerpc/kvm_asm.h
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@@ -0,0 +1,55 @@
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/*
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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. 2008
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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_ASM_H__
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#define __POWERPC_KVM_ASM_H__
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/* IVPR must be 64KiB-aligned. */
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#define VCPU_SIZE_ORDER 4
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#define VCPU_SIZE_LOG (VCPU_SIZE_ORDER + 12)
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#define VCPU_TLB_PGSZ PPC44x_TLB_64K
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#define VCPU_SIZE_BYTES (1<<VCPU_SIZE_LOG)
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#define BOOKE_INTERRUPT_CRITICAL 0
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#define BOOKE_INTERRUPT_MACHINE_CHECK 1
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#define BOOKE_INTERRUPT_DATA_STORAGE 2
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#define BOOKE_INTERRUPT_INST_STORAGE 3
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#define BOOKE_INTERRUPT_EXTERNAL 4
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#define BOOKE_INTERRUPT_ALIGNMENT 5
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#define BOOKE_INTERRUPT_PROGRAM 6
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#define BOOKE_INTERRUPT_FP_UNAVAIL 7
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#define BOOKE_INTERRUPT_SYSCALL 8
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#define BOOKE_INTERRUPT_AP_UNAVAIL 9
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#define BOOKE_INTERRUPT_DECREMENTER 10
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#define BOOKE_INTERRUPT_FIT 11
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#define BOOKE_INTERRUPT_WATCHDOG 12
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#define BOOKE_INTERRUPT_DTLB_MISS 13
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#define BOOKE_INTERRUPT_ITLB_MISS 14
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#define BOOKE_INTERRUPT_DEBUG 15
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#define BOOKE_MAX_INTERRUPT 15
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#define RESUME_FLAG_NV (1<<0) /* Reload guest nonvolatile state? */
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#define RESUME_FLAG_HOST (1<<1) /* Resume host? */
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#define RESUME_GUEST 0
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#define RESUME_GUEST_NV RESUME_FLAG_NV
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#define RESUME_HOST RESUME_FLAG_HOST
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#define RESUME_HOST_NV (RESUME_FLAG_HOST|RESUME_FLAG_NV)
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#endif /* __POWERPC_KVM_ASM_H__ */
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152
include/asm-powerpc/kvm_host.h
Normal file
152
include/asm-powerpc/kvm_host.h
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@@ -0,0 +1,152 @@
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/*
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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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};
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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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37
include/asm-powerpc/kvm_para.h
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37
include/asm-powerpc/kvm_para.h
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@@ -0,0 +1,37 @@
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/*
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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. 2008
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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_PARA_H__
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#define __POWERPC_KVM_PARA_H__
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#ifdef __KERNEL__
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static inline int kvm_para_available(void)
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{
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return 0;
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}
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static inline unsigned int kvm_arch_para_features(void)
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{
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return 0;
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}
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#endif /* __KERNEL__ */
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#endif /* __POWERPC_KVM_PARA_H__ */
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88
include/asm-powerpc/kvm_ppc.h
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88
include/asm-powerpc/kvm_ppc.h
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@@ -0,0 +1,88 @@
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/*
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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. 2008
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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_PPC_H__
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#define __POWERPC_KVM_PPC_H__
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/* This file exists just so we can dereference kvm_vcpu, avoiding nested header
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* dependencies. */
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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 <linux/kvm_host.h>
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struct kvm_tlb {
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struct tlbe guest_tlb[PPC44x_TLB_SIZE];
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struct tlbe shadow_tlb[PPC44x_TLB_SIZE];
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};
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enum emulation_result {
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EMULATE_DONE, /* no further processing */
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EMULATE_DO_MMIO, /* kvm_run filled with MMIO request */
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EMULATE_DO_DCR, /* kvm_run filled with DCR request */
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EMULATE_FAIL, /* can't emulate this instruction */
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};
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extern const unsigned char exception_priority[];
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extern const unsigned char priority_exception[];
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extern int __kvmppc_vcpu_run(struct kvm_run *kvm_run, struct kvm_vcpu *vcpu);
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extern char kvmppc_handlers_start[];
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extern unsigned long kvmppc_handler_len;
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extern void kvmppc_dump_vcpu(struct kvm_vcpu *vcpu);
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extern int kvmppc_handle_load(struct kvm_run *run, struct kvm_vcpu *vcpu,
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unsigned int rt, unsigned int bytes,
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int is_bigendian);
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extern int kvmppc_handle_store(struct kvm_run *run, struct kvm_vcpu *vcpu,
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u32 val, unsigned int bytes, int is_bigendian);
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extern int kvmppc_emulate_instruction(struct kvm_run *run,
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struct kvm_vcpu *vcpu);
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extern void kvmppc_mmu_map(struct kvm_vcpu *vcpu, u64 gvaddr, gfn_t gfn,
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u64 asid, u32 flags);
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extern void kvmppc_mmu_invalidate(struct kvm_vcpu *vcpu, u64 eaddr, u64 asid);
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extern void kvmppc_mmu_priv_switch(struct kvm_vcpu *vcpu, int usermode);
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extern void kvmppc_check_and_deliver_interrupts(struct kvm_vcpu *vcpu);
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static inline void kvmppc_queue_exception(struct kvm_vcpu *vcpu, int exception)
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{
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unsigned int priority = exception_priority[exception];
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set_bit(priority, &vcpu->arch.pending_exceptions);
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}
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static inline void kvmppc_clear_exception(struct kvm_vcpu *vcpu, int exception)
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{
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unsigned int priority = exception_priority[exception];
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clear_bit(priority, &vcpu->arch.pending_exceptions);
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}
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static inline void kvmppc_set_msr(struct kvm_vcpu *vcpu, u32 new_msr)
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{
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if ((new_msr & MSR_PR) != (vcpu->arch.msr & MSR_PR))
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kvmppc_mmu_priv_switch(vcpu, new_msr & MSR_PR);
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vcpu->arch.msr = new_msr;
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}
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#endif /* __POWERPC_KVM_PPC_H__ */
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