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KVM: ppc: create struct kvm_vcpu_44x and introduce container_of() accessor

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This patch doesn't yet move all 44x-specific data into the new structure, but
is the first step down that path. In the future we may also want to create a
struct kvm_vcpu_booke.

Based on patch from Liu Yu <yu.liu@freescale.com>.

Signed-off-by: Hollis Blanchard <hollisb@us.ibm.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
This commit is contained in:
Hollis Blanchard
2008-11-05 09:36:18 -06:00
committed by Avi Kivity
parent 5cbb5106f5
commit db93f5745d
9 changed files with 154 additions and 63 deletions
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47
arch/powerpc/include/asm/kvm_44x.h Normal file
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@@ -0,0 +1,47 @@
/*
* 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 __ASM_44X_H__
#define __ASM_44X_H__
#include <linux/kvm_host.h>
/* XXX Can't include mmu-44x.h because it redefines struct mm_context. */
#define PPC44x_TLB_SIZE 64
struct kvmppc_vcpu_44x {
/* Unmodified copy of the guest's TLB. */
struct kvmppc_44x_tlbe guest_tlb[PPC44x_TLB_SIZE];
/* TLB that's actually used when the guest is running. */
struct kvmppc_44x_tlbe shadow_tlb[PPC44x_TLB_SIZE];
/* Pages which are referenced in the shadow TLB. */
struct page *shadow_pages[PPC44x_TLB_SIZE];
/* Track which TLB entries we've modified in the current exit. */
u8 shadow_tlb_mod[PPC44x_TLB_SIZE];
struct kvm_vcpu vcpu;
};
static inline struct kvmppc_vcpu_44x *to_44x(struct kvm_vcpu *vcpu)
{
return container_of(vcpu, struct kvmppc_vcpu_44x, vcpu);
}
#endif /* __ASM_44X_H__ */

13
arch/powerpc/include/asm/kvm_host.h
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@@ -74,20 +74,7 @@ struct kvmppc_44x_tlbe {
struct kvm_arch {
};
/* XXX Can't include mmu-44x.h because it redefines struct mm_context. */
#define PPC44x_TLB_SIZE 64
struct kvm_vcpu_arch {
/* Unmodified copy of the guest's TLB. */
struct kvmppc_44x_tlbe guest_tlb[PPC44x_TLB_SIZE];
/* TLB that's actually used when the guest is running. */
struct kvmppc_44x_tlbe shadow_tlb[PPC44x_TLB_SIZE];
/* Pages which are referenced in the shadow TLB. */
struct page *shadow_pages[PPC44x_TLB_SIZE];
/* Track which TLB entries we've modified in the current exit. */
u8 shadow_tlb_mod[PPC44x_TLB_SIZE];
u32 host_stack;
u32 host_pid;
u32 host_dbcr0;

6
arch/powerpc/include/asm/kvm_ppc.h
View File

@@ -62,6 +62,9 @@ extern void kvmppc_mmu_switch_pid(struct kvm_vcpu *vcpu, u32 pid);
/* Core-specific hooks */
extern struct kvm_vcpu *kvmppc_core_vcpu_create(struct kvm *kvm,
unsigned int id);
extern void kvmppc_core_vcpu_free(struct kvm_vcpu *vcpu);
extern int kvmppc_core_vcpu_setup(struct kvm_vcpu *vcpu);
extern int kvmppc_core_check_processor_compat(void);
extern int kvmppc_core_vcpu_translate(struct kvm_vcpu *vcpu,
@@ -85,6 +88,9 @@ extern int kvmppc_core_emulate_op(struct kvm_run *run, struct kvm_vcpu *vcpu,
extern int kvmppc_core_emulate_mtspr(struct kvm_vcpu *vcpu, int sprn, int rs);
extern int kvmppc_core_emulate_mfspr(struct kvm_vcpu *vcpu, int sprn, int rt);
extern int kvmppc_booke_init(void);
extern void kvmppc_booke_exit(void);
extern void kvmppc_core_destroy_mmu(struct kvm_vcpu *vcpu);
#endif /* __POWERPC_KVM_PPC_H__ */