DEFINE(VCPU_HxFAR, offsetof(struct kvm_vcpu, arch.fault.hxfar));
DEFINE(VCPU_HPFAR, offsetof(struct kvm_vcpu, arch.fault.hpfar));
DEFINE(VCPU_HYP_PC, offsetof(struct kvm_vcpu, arch.fault.hyp_pc));
-#ifdef CONFIG_KVM_ARM_VGIC
DEFINE(VCPU_VGIC_CPU, offsetof(struct kvm_vcpu, arch.vgic_cpu));
DEFINE(VGIC_V2_CPU_HCR, offsetof(struct vgic_cpu, vgic_v2.vgic_hcr));
DEFINE(VGIC_V2_CPU_VMCR, offsetof(struct vgic_cpu, vgic_v2.vgic_vmcr));
DEFINE(VGIC_V2_CPU_APR, offsetof(struct vgic_cpu, vgic_v2.vgic_apr));
DEFINE(VGIC_V2_CPU_LR, offsetof(struct vgic_cpu, vgic_v2.vgic_lr));
DEFINE(VGIC_CPU_NR_LR, offsetof(struct vgic_cpu, nr_lr));
-#ifdef CONFIG_KVM_ARM_TIMER
DEFINE(VCPU_TIMER_CNTV_CTL, offsetof(struct kvm_vcpu, arch.timer_cpu.cntv_ctl));
DEFINE(VCPU_TIMER_CNTV_CVAL, offsetof(struct kvm_vcpu, arch.timer_cpu.cntv_cval));
DEFINE(KVM_TIMER_CNTVOFF, offsetof(struct kvm, arch.timer.cntvoff));
DEFINE(KVM_TIMER_ENABLED, offsetof(struct kvm, arch.timer.enabled));
-#endif
DEFINE(KVM_VGIC_VCTRL, offsetof(struct kvm, arch.vgic.vctrl_base));
-#endif
DEFINE(KVM_VTTBR, offsetof(struct kvm, arch.vttbr));
#endif
return 0;
config KVM
bool "Kernel-based Virtual Machine (KVM) support"
+ depends on MMU && OF
select PREEMPT_NOTIFIERS
select ANON_INODES
select HAVE_KVM_CPU_RELAX_INTERCEPT
select KVM_ARM_HOST
select KVM_GENERIC_DIRTYLOG_READ_PROTECT
select SRCU
- depends on ARM_VIRT_EXT && ARM_LPAE
+ select MMU_NOTIFIER
+ select HAVE_KVM_IRQCHIP
+ depends on ARM_VIRT_EXT && ARM_LPAE && ARM_ARCH_TIMER
---help---
- Support hosting virtualized guest machines. You will also
- need to select one or more of the processor modules below.
+ Support hosting virtualized guest machines.
This module provides access to the hardware capabilities through
a character device node named /dev/kvm.
If unsure, say N.
config KVM_ARM_HOST
- bool "KVM host support for ARM cpus."
- depends on KVM
- depends on MMU
- select MMU_NOTIFIER
+ bool
---help---
Provides host support for ARM processors.
large, so only choose a reasonable number that you expect to
actually use.
-config KVM_ARM_VGIC
- bool "KVM support for Virtual GIC"
- depends on KVM_ARM_HOST && OF
- select HAVE_KVM_IRQCHIP
- default y
- ---help---
- Adds support for a hardware assisted, in-kernel GIC emulation.
-
-config KVM_ARM_TIMER
- bool "KVM support for Architected Timers"
- depends on KVM_ARM_VGIC && ARM_ARCH_TIMER
- select HAVE_KVM_IRQCHIP
- default y
- ---help---
- Adds support for the Architected Timers in virtual machines
-
endif # VIRTUALIZATION
obj-y += kvm-arm.o init.o interrupts.o
obj-y += arm.o handle_exit.o guest.o mmu.o emulate.o reset.o
obj-y += coproc.o coproc_a15.o coproc_a7.o mmio.o psci.o perf.o
-obj-$(CONFIG_KVM_ARM_VGIC) += $(KVM)/arm/vgic.o
-obj-$(CONFIG_KVM_ARM_VGIC) += $(KVM)/arm/vgic-v2.o
-obj-$(CONFIG_KVM_ARM_VGIC) += $(KVM)/arm/vgic-v2-emul.o
-obj-$(CONFIG_KVM_ARM_TIMER) += $(KVM)/arm/arch_timer.o
+obj-y += $(KVM)/arm/vgic.o
+obj-y += $(KVM)/arm/vgic-v2.o
+obj-y += $(KVM)/arm/vgic-v2-emul.o
+obj-y += $(KVM)/arm/arch_timer.o
{
int r;
switch (ext) {
-#ifdef CONFIG_KVM_ARM_VGIC
case KVM_CAP_IRQCHIP:
-#endif
case KVM_CAP_DEVICE_CTRL:
case KVM_CAP_USER_MEMORY:
case KVM_CAP_SYNC_MMU:
switch (dev_id) {
case KVM_ARM_DEVICE_VGIC_V2:
- if (!IS_ENABLED(CONFIG_KVM_ARM_VGIC))
- return -ENXIO;
return kvm_vgic_addr(kvm, type, &dev_addr->addr, true);
default:
return -ENODEV;
switch (ioctl) {
case KVM_CREATE_IRQCHIP: {
- if (!IS_ENABLED(CONFIG_KVM_ARM_VGIC))
- return -ENXIO;
return kvm_vgic_create(kvm, KVM_DEV_TYPE_ARM_VGIC_V2);
}
case KVM_ARM_SET_DEVICE_ADDR: {
return -EINVAL;
}
-#ifndef CONFIG_KVM_ARM_TIMER
-
-#define NUM_TIMER_REGS 0
-
-static int copy_timer_indices(struct kvm_vcpu *vcpu, u64 __user *uindices)
-{
- return 0;
-}
-
-static bool is_timer_reg(u64 index)
-{
- return false;
-}
-
-#else
-
#define NUM_TIMER_REGS 3
static bool is_timer_reg(u64 index)
return 0;
}
-#endif
-
static int set_timer_reg(struct kvm_vcpu *vcpu, const struct kvm_one_reg *reg)
{
void __user *uaddr = (void __user *)(long)reg->addr;
* Assumes vcpu pointer in vcpu reg
*/
.macro save_vgic_state
-#ifdef CONFIG_KVM_ARM_VGIC
/* Get VGIC VCTRL base into r2 */
ldr r2, [vcpu, #VCPU_KVM]
ldr r2, [r2, #KVM_VGIC_VCTRL]
subs r4, r4, #1
bne 1b
2:
-#endif
.endm
/*
* Assumes vcpu pointer in vcpu reg
*/
.macro restore_vgic_state
-#ifdef CONFIG_KVM_ARM_VGIC
/* Get VGIC VCTRL base into r2 */
ldr r2, [vcpu, #VCPU_KVM]
ldr r2, [r2, #KVM_VGIC_VCTRL]
subs r4, r4, #1
bne 1b
2:
-#endif
.endm
#define CNTHCTL_PL1PCTEN (1 << 0)
* Clobbers r2-r5
*/
.macro save_timer_state
-#ifdef CONFIG_KVM_ARM_TIMER
ldr r4, [vcpu, #VCPU_KVM]
ldr r2, [r4, #KVM_TIMER_ENABLED]
cmp r2, #0
mcrr p15, 4, r2, r2, c14 @ CNTVOFF
1:
-#endif
@ Allow physical timer/counter access for the host
mrc p15, 4, r2, c14, c1, 0 @ CNTHCTL
orr r2, r2, #(CNTHCTL_PL1PCEN | CNTHCTL_PL1PCTEN)
bic r2, r2, #CNTHCTL_PL1PCEN
mcr p15, 4, r2, c14, c1, 0 @ CNTHCTL
-#ifdef CONFIG_KVM_ARM_TIMER
ldr r4, [vcpu, #VCPU_KVM]
ldr r2, [r4, #KVM_TIMER_ENABLED]
cmp r2, #0
and r2, r2, #3
mcr p15, 0, r2, c14, c3, 1 @ CNTV_CTL
1:
-#endif
.endm
.equ vmentry, 0
config KVM
bool "Kernel-based Virtual Machine (KVM) support"
+ depends on OF
select MMU_NOTIFIER
select PREEMPT_NOTIFIERS
select ANON_INODES
select HAVE_KVM_ARCH_TLB_FLUSH_ALL
select KVM_MMIO
select KVM_ARM_HOST
- select KVM_ARM_VGIC
- select KVM_ARM_TIMER
+ select HAVE_KVM_IRQCHIP
select KVM_GENERIC_DIRTYLOG_READ_PROTECT
select SRCU
---help---
large, so only choose a reasonable number that you expect to
actually use.
-config KVM_ARM_VGIC
- bool
- depends on KVM_ARM_HOST && OF
- select HAVE_KVM_IRQCHIP
- ---help---
- Adds support for a hardware assisted, in-kernel GIC emulation.
-
-config KVM_ARM_TIMER
- bool
- depends on KVM_ARM_VGIC
- ---help---
- Adds support for the Architected Timers in virtual machines.
-
endif # VIRTUALIZATION
kvm-$(CONFIG_KVM_ARM_HOST) += hyp.o hyp-init.o handle_exit.o
kvm-$(CONFIG_KVM_ARM_HOST) += guest.o reset.o sys_regs.o sys_regs_generic_v8.o
-kvm-$(CONFIG_KVM_ARM_VGIC) += $(KVM)/arm/vgic.o
-kvm-$(CONFIG_KVM_ARM_VGIC) += $(KVM)/arm/vgic-v2.o
-kvm-$(CONFIG_KVM_ARM_VGIC) += $(KVM)/arm/vgic-v2-emul.o
-kvm-$(CONFIG_KVM_ARM_VGIC) += vgic-v2-switch.o
-kvm-$(CONFIG_KVM_ARM_VGIC) += $(KVM)/arm/vgic-v3.o
-kvm-$(CONFIG_KVM_ARM_VGIC) += $(KVM)/arm/vgic-v3-emul.o
-kvm-$(CONFIG_KVM_ARM_VGIC) += vgic-v3-switch.o
-kvm-$(CONFIG_KVM_ARM_TIMER) += $(KVM)/arm/arch_timer.o
+kvm-$(CONFIG_KVM_ARM_HOST) += $(KVM)/arm/vgic.o
+kvm-$(CONFIG_KVM_ARM_HOST) += $(KVM)/arm/vgic-v2.o
+kvm-$(CONFIG_KVM_ARM_HOST) += $(KVM)/arm/vgic-v2-emul.o
+kvm-$(CONFIG_KVM_ARM_HOST) += vgic-v2-switch.o
+kvm-$(CONFIG_KVM_ARM_HOST) += $(KVM)/arm/vgic-v3.o
+kvm-$(CONFIG_KVM_ARM_HOST) += $(KVM)/arm/vgic-v3-emul.o
+kvm-$(CONFIG_KVM_ARM_HOST) += vgic-v3-switch.o
+kvm-$(CONFIG_KVM_ARM_HOST) += $(KVM)/arm/arch_timer.o
#include <linux/workqueue.h>
struct arch_timer_kvm {
-#ifdef CONFIG_KVM_ARM_TIMER
/* Is the timer enabled */
bool enabled;
/* Virtual offset */
cycle_t cntvoff;
-#endif
};
struct arch_timer_cpu {
-#ifdef CONFIG_KVM_ARM_TIMER
/* Registers: control register, timer value */
u32 cntv_ctl; /* Saved/restored */
cycle_t cntv_cval; /* Saved/restored */
/* Timer IRQ */
const struct kvm_irq_level *irq;
-#endif
};
-#ifdef CONFIG_KVM_ARM_TIMER
int kvm_timer_hyp_init(void);
void kvm_timer_enable(struct kvm *kvm);
void kvm_timer_init(struct kvm *kvm);
u64 kvm_arm_timer_get_reg(struct kvm_vcpu *, u64 regid);
int kvm_arm_timer_set_reg(struct kvm_vcpu *, u64 regid, u64 value);
-#else
-static inline int kvm_timer_hyp_init(void)
-{
- return 0;
-};
-
-static inline void kvm_timer_enable(struct kvm *kvm) {}
-static inline void kvm_timer_init(struct kvm *kvm) {}
-static inline void kvm_timer_vcpu_reset(struct kvm_vcpu *vcpu,
- const struct kvm_irq_level *irq) {}
-static inline void kvm_timer_vcpu_init(struct kvm_vcpu *vcpu) {}
-static inline void kvm_timer_flush_hwstate(struct kvm_vcpu *vcpu) {}
-static inline void kvm_timer_sync_hwstate(struct kvm_vcpu *vcpu) {}
-static inline void kvm_timer_vcpu_terminate(struct kvm_vcpu *vcpu) {}
-
-static inline int kvm_arm_timer_set_reg(struct kvm_vcpu *vcpu, u64 regid, u64 value)
-{
- return 0;
-}
-
-static inline u64 kvm_arm_timer_get_reg(struct kvm_vcpu *vcpu, u64 regid)
-{
- return 0;
-}
-#endif
-
#endif
};
struct vgic_dist {
-#ifdef CONFIG_KVM_ARM_VGIC
spinlock_t lock;
bool in_kernel;
bool ready;
unsigned long *irq_pending_on_cpu;
struct vgic_vm_ops vm_ops;
-#endif
};
struct vgic_v2_cpu_if {
};
struct vgic_cpu {
-#ifdef CONFIG_KVM_ARM_VGIC
/* per IRQ to LR mapping */
u8 *vgic_irq_lr_map;
struct vgic_v2_cpu_if vgic_v2;
struct vgic_v3_cpu_if vgic_v3;
};
-#endif
};
#define LR_EMPTY 0xff
struct kvm_run;
struct kvm_exit_mmio;
-#ifdef CONFIG_KVM_ARM_VGIC
int kvm_vgic_addr(struct kvm *kvm, unsigned long type, u64 *addr, bool write);
int kvm_vgic_hyp_init(void);
int kvm_vgic_map_resources(struct kvm *kvm);
}
#endif
-#else
-static inline int kvm_vgic_hyp_init(void)
-{
- return 0;
-}
-
-static inline int kvm_vgic_set_addr(struct kvm *kvm, unsigned long type, u64 addr)
-{
- return 0;
-}
-
-static inline int kvm_vgic_addr(struct kvm *kvm, unsigned long type, u64 *addr, bool write)
-{
- return -ENXIO;
-}
-
-static inline int kvm_vgic_map_resources(struct kvm *kvm)
-{
- return 0;
-}
-
-static inline int kvm_vgic_create(struct kvm *kvm, u32 type)
-{
- return 0;
-}
-
-static inline void kvm_vgic_destroy(struct kvm *kvm)
-{
-}
-
-static inline void kvm_vgic_vcpu_destroy(struct kvm_vcpu *vcpu)
-{
-}
-
-static inline int kvm_vgic_vcpu_init(struct kvm_vcpu *vcpu)
-{
- return 0;
-}
-
-static inline void kvm_vgic_flush_hwstate(struct kvm_vcpu *vcpu) {}
-static inline void kvm_vgic_sync_hwstate(struct kvm_vcpu *vcpu) {}
-
-static inline int kvm_vgic_inject_irq(struct kvm *kvm, int cpuid,
- unsigned int irq_num, bool level)
-{
- return 0;
-}
-
-static inline int kvm_vgic_vcpu_pending_irq(struct kvm_vcpu *vcpu)
-{
- return 0;
-}
-
-static inline bool vgic_handle_mmio(struct kvm_vcpu *vcpu, struct kvm_run *run,
- struct kvm_exit_mmio *mmio)
-{
- return false;
-}
-
-static inline int irqchip_in_kernel(struct kvm *kvm)
-{
- return 0;
-}
-
-static inline bool vgic_initialized(struct kvm *kvm)
-{
- return true;
-}
-
-static inline bool vgic_ready(struct kvm *kvm)
-{
- return true;
-}
-
-static inline int kvm_vgic_get_max_vcpus(void)
-{
- return KVM_MAX_VCPUS;
-}
-#endif
-
#endif
projects / cascardo / linux.git / commitdiff