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author | Hollis Blanchard <hollisb@us.ibm.com> | 2008-04-17 06:28:09 +0200 |
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committer | Avi Kivity <avi@qumranet.com> | 2008-04-27 17:21:39 +0200 |
commit | bbf45ba57eaec56569918a8bab96ab653bd45ec1 (patch) | |
tree | 63c53b1c1d93ec6559c7695c16b2345238e270f5 /include/asm-powerpc/kvm_ppc.h | |
parent | KVM: Add MAINTAINERS entry for PowerPC KVM (diff) | |
download | linux-bbf45ba57eaec56569918a8bab96ab653bd45ec1.tar.xz linux-bbf45ba57eaec56569918a8bab96ab653bd45ec1.zip |
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>
Diffstat (limited to '')
-rw-r--r-- | include/asm-powerpc/kvm_ppc.h | 88 |
1 files changed, 88 insertions, 0 deletions
diff --git a/include/asm-powerpc/kvm_ppc.h b/include/asm-powerpc/kvm_ppc.h new file mode 100644 index 000000000000..7ac820308a7e --- /dev/null +++ b/include/asm-powerpc/kvm_ppc.h @@ -0,0 +1,88 @@ +/* + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License, version 2, as + * published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. + * + * Copyright IBM Corp. 2008 + * + * Authors: Hollis Blanchard <hollisb@us.ibm.com> + */ + +#ifndef __POWERPC_KVM_PPC_H__ +#define __POWERPC_KVM_PPC_H__ + +/* This file exists just so we can dereference kvm_vcpu, avoiding nested header + * dependencies. */ + +#include <linux/mutex.h> +#include <linux/timer.h> +#include <linux/types.h> +#include <linux/kvm_types.h> +#include <linux/kvm_host.h> + +struct kvm_tlb { + struct tlbe guest_tlb[PPC44x_TLB_SIZE]; + struct tlbe shadow_tlb[PPC44x_TLB_SIZE]; +}; + +enum emulation_result { + EMULATE_DONE, /* no further processing */ + EMULATE_DO_MMIO, /* kvm_run filled with MMIO request */ + EMULATE_DO_DCR, /* kvm_run filled with DCR request */ + EMULATE_FAIL, /* can't emulate this instruction */ +}; + +extern const unsigned char exception_priority[]; +extern const unsigned char priority_exception[]; + +extern int __kvmppc_vcpu_run(struct kvm_run *kvm_run, struct kvm_vcpu *vcpu); +extern char kvmppc_handlers_start[]; +extern unsigned long kvmppc_handler_len; + +extern void kvmppc_dump_vcpu(struct kvm_vcpu *vcpu); +extern int kvmppc_handle_load(struct kvm_run *run, struct kvm_vcpu *vcpu, + unsigned int rt, unsigned int bytes, + int is_bigendian); +extern int kvmppc_handle_store(struct kvm_run *run, struct kvm_vcpu *vcpu, + u32 val, unsigned int bytes, int is_bigendian); + +extern int kvmppc_emulate_instruction(struct kvm_run *run, + struct kvm_vcpu *vcpu); + +extern void kvmppc_mmu_map(struct kvm_vcpu *vcpu, u64 gvaddr, gfn_t gfn, + u64 asid, u32 flags); +extern void kvmppc_mmu_invalidate(struct kvm_vcpu *vcpu, u64 eaddr, u64 asid); +extern void kvmppc_mmu_priv_switch(struct kvm_vcpu *vcpu, int usermode); + +extern void kvmppc_check_and_deliver_interrupts(struct kvm_vcpu *vcpu); + +static inline void kvmppc_queue_exception(struct kvm_vcpu *vcpu, int exception) +{ + unsigned int priority = exception_priority[exception]; + set_bit(priority, &vcpu->arch.pending_exceptions); +} + +static inline void kvmppc_clear_exception(struct kvm_vcpu *vcpu, int exception) +{ + unsigned int priority = exception_priority[exception]; + clear_bit(priority, &vcpu->arch.pending_exceptions); +} + +static inline void kvmppc_set_msr(struct kvm_vcpu *vcpu, u32 new_msr) +{ + if ((new_msr & MSR_PR) != (vcpu->arch.msr & MSR_PR)) + kvmppc_mmu_priv_switch(vcpu, new_msr & MSR_PR); + + vcpu->arch.msr = new_msr; +} + +#endif /* __POWERPC_KVM_PPC_H__ */ |