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authorLinus Torvalds <torvalds@linux-foundation.org>2017-07-06 18:38:31 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2017-07-06 18:38:31 -0700
commitc136b84393d4e340e1b53fc7f737dd5827b19ee5 (patch)
tree985a1bdfafe7ec5ce2d3c738f601cad3998d8ce9 /arch/arm
parente0f25a3f2d052e36ff67a9b4db835c3e27e950d8 (diff)
parent1372324b328cd5dabaef5e345e37ad48c63df2a9 (diff)
Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm
Pull KVM updates from Paolo Bonzini: "PPC: - Better machine check handling for HV KVM - Ability to support guests with threads=2, 4 or 8 on POWER9 - Fix for a race that could cause delayed recognition of signals - Fix for a bug where POWER9 guests could sleep with interrupts pending. ARM: - VCPU request overhaul - allow timer and PMU to have their interrupt number selected from userspace - workaround for Cavium erratum 30115 - handling of memory poisonning - the usual crop of fixes and cleanups s390: - initial machine check forwarding - migration support for the CMMA page hinting information - cleanups and fixes x86: - nested VMX bugfixes and improvements - more reliable NMI window detection on AMD - APIC timer optimizations Generic: - VCPU request overhaul + documentation of common code patterns - kvm_stat improvements" * tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm: (124 commits) Update my email address kvm: vmx: allow host to access guest MSR_IA32_BNDCFGS x86: kvm: mmu: use ept a/d in vmcs02 iff used in vmcs12 kvm: x86: mmu: allow A/D bits to be disabled in an mmu x86: kvm: mmu: make spte mmio mask more explicit x86: kvm: mmu: dead code thanks to access tracking KVM: PPC: Book3S: Fix typo in XICS-on-XIVE state saving code KVM: PPC: Book3S HV: Close race with testing for signals on guest entry KVM: PPC: Book3S HV: Simplify dynamic micro-threading code KVM: x86: remove ignored type attribute KVM: LAPIC: Fix lapic timer injection delay KVM: lapic: reorganize restart_apic_timer KVM: lapic: reorganize start_hv_timer kvm: nVMX: Check memory operand to INVVPID KVM: s390: Inject machine check into the nested guest KVM: s390: Inject machine check into the guest tools/kvm_stat: add new interactive command 'b' tools/kvm_stat: add new command line switch '-i' tools/kvm_stat: fix error on interactive command 'g' KVM: SVM: suppress unnecessary NMI singlestep on GIF=0 and nested exit ...
Diffstat (limited to 'arch/arm')
-rw-r--r--arch/arm/include/asm/kvm_host.h28
-rw-r--r--arch/arm/include/uapi/asm/kvm.h8
-rw-r--r--arch/arm/kvm/guest.c51
-rw-r--r--arch/arm/kvm/handle_exit.c1
-rw-r--r--arch/arm/kvm/hyp/switch.c2
-rw-r--r--arch/arm/kvm/reset.c16
6 files changed, 73 insertions, 33 deletions
diff --git a/arch/arm/include/asm/kvm_host.h b/arch/arm/include/asm/kvm_host.h
index f0e66577ce05..127e2dd2e21c 100644
--- a/arch/arm/include/asm/kvm_host.h
+++ b/arch/arm/include/asm/kvm_host.h
@@ -44,7 +44,9 @@
#define KVM_MAX_VCPUS VGIC_V2_MAX_CPUS
#endif
-#define KVM_REQ_VCPU_EXIT (8 | KVM_REQUEST_WAIT | KVM_REQUEST_NO_WAKEUP)
+#define KVM_REQ_SLEEP \
+ KVM_ARCH_REQ_FLAGS(0, KVM_REQUEST_WAIT | KVM_REQUEST_NO_WAKEUP)
+#define KVM_REQ_IRQ_PENDING KVM_ARCH_REQ(1)
u32 *kvm_vcpu_reg(struct kvm_vcpu *vcpu, u8 reg_num, u32 mode);
int __attribute_const__ kvm_target_cpu(void);
@@ -233,8 +235,6 @@ struct kvm_vcpu *kvm_arm_get_running_vcpu(void);
struct kvm_vcpu __percpu **kvm_get_running_vcpus(void);
void kvm_arm_halt_guest(struct kvm *kvm);
void kvm_arm_resume_guest(struct kvm *kvm);
-void kvm_arm_halt_vcpu(struct kvm_vcpu *vcpu);
-void kvm_arm_resume_vcpu(struct kvm_vcpu *vcpu);
int kvm_arm_copy_coproc_indices(struct kvm_vcpu *vcpu, u64 __user *uindices);
unsigned long kvm_arm_num_coproc_regs(struct kvm_vcpu *vcpu);
@@ -291,20 +291,12 @@ static inline void kvm_arm_init_debug(void) {}
static inline void kvm_arm_setup_debug(struct kvm_vcpu *vcpu) {}
static inline void kvm_arm_clear_debug(struct kvm_vcpu *vcpu) {}
static inline void kvm_arm_reset_debug_ptr(struct kvm_vcpu *vcpu) {}
-static inline int kvm_arm_vcpu_arch_set_attr(struct kvm_vcpu *vcpu,
- struct kvm_device_attr *attr)
-{
- return -ENXIO;
-}
-static inline int kvm_arm_vcpu_arch_get_attr(struct kvm_vcpu *vcpu,
- struct kvm_device_attr *attr)
-{
- return -ENXIO;
-}
-static inline int kvm_arm_vcpu_arch_has_attr(struct kvm_vcpu *vcpu,
- struct kvm_device_attr *attr)
-{
- return -ENXIO;
-}
+
+int kvm_arm_vcpu_arch_set_attr(struct kvm_vcpu *vcpu,
+ struct kvm_device_attr *attr);
+int kvm_arm_vcpu_arch_get_attr(struct kvm_vcpu *vcpu,
+ struct kvm_device_attr *attr);
+int kvm_arm_vcpu_arch_has_attr(struct kvm_vcpu *vcpu,
+ struct kvm_device_attr *attr);
#endif /* __ARM_KVM_HOST_H__ */
diff --git a/arch/arm/include/uapi/asm/kvm.h b/arch/arm/include/uapi/asm/kvm.h
index 5e3c673fa3f4..5db2d4c6a55f 100644
--- a/arch/arm/include/uapi/asm/kvm.h
+++ b/arch/arm/include/uapi/asm/kvm.h
@@ -203,6 +203,14 @@ struct kvm_arch_memory_slot {
#define KVM_DEV_ARM_VGIC_LINE_LEVEL_INTID_MASK 0x3ff
#define VGIC_LEVEL_INFO_LINE_LEVEL 0
+/* Device Control API on vcpu fd */
+#define KVM_ARM_VCPU_PMU_V3_CTRL 0
+#define KVM_ARM_VCPU_PMU_V3_IRQ 0
+#define KVM_ARM_VCPU_PMU_V3_INIT 1
+#define KVM_ARM_VCPU_TIMER_CTRL 1
+#define KVM_ARM_VCPU_TIMER_IRQ_VTIMER 0
+#define KVM_ARM_VCPU_TIMER_IRQ_PTIMER 1
+
#define KVM_DEV_ARM_VGIC_CTRL_INIT 0
#define KVM_DEV_ARM_ITS_SAVE_TABLES 1
#define KVM_DEV_ARM_ITS_RESTORE_TABLES 2
diff --git a/arch/arm/kvm/guest.c b/arch/arm/kvm/guest.c
index fa6182a40941..1e0784ebbfd6 100644
--- a/arch/arm/kvm/guest.c
+++ b/arch/arm/kvm/guest.c
@@ -301,3 +301,54 @@ int kvm_arch_vcpu_ioctl_set_guest_debug(struct kvm_vcpu *vcpu,
{
return -EINVAL;
}
+
+int kvm_arm_vcpu_arch_set_attr(struct kvm_vcpu *vcpu,
+ struct kvm_device_attr *attr)
+{
+ int ret;
+
+ switch (attr->group) {
+ case KVM_ARM_VCPU_TIMER_CTRL:
+ ret = kvm_arm_timer_set_attr(vcpu, attr);
+ break;
+ default:
+ ret = -ENXIO;
+ break;
+ }
+
+ return ret;
+}
+
+int kvm_arm_vcpu_arch_get_attr(struct kvm_vcpu *vcpu,
+ struct kvm_device_attr *attr)
+{
+ int ret;
+
+ switch (attr->group) {
+ case KVM_ARM_VCPU_TIMER_CTRL:
+ ret = kvm_arm_timer_get_attr(vcpu, attr);
+ break;
+ default:
+ ret = -ENXIO;
+ break;
+ }
+
+ return ret;
+}
+
+int kvm_arm_vcpu_arch_has_attr(struct kvm_vcpu *vcpu,
+ struct kvm_device_attr *attr)
+{
+ int ret;
+
+ switch (attr->group) {
+ case KVM_ARM_VCPU_TIMER_CTRL:
+ ret = kvm_arm_timer_has_attr(vcpu, attr);
+ break;
+ default:
+ ret = -ENXIO;
+ break;
+ }
+
+ return ret;
+}
diff --git a/arch/arm/kvm/handle_exit.c b/arch/arm/kvm/handle_exit.c
index f86a9aaef462..54442e375354 100644
--- a/arch/arm/kvm/handle_exit.c
+++ b/arch/arm/kvm/handle_exit.c
@@ -72,6 +72,7 @@ static int kvm_handle_wfx(struct kvm_vcpu *vcpu, struct kvm_run *run)
trace_kvm_wfx(*vcpu_pc(vcpu), false);
vcpu->stat.wfi_exit_stat++;
kvm_vcpu_block(vcpu);
+ kvm_clear_request(KVM_REQ_UNHALT, vcpu);
}
kvm_skip_instr(vcpu, kvm_vcpu_trap_il_is32bit(vcpu));
diff --git a/arch/arm/kvm/hyp/switch.c b/arch/arm/kvm/hyp/switch.c
index 624a510d31df..ebd2dd46adf7 100644
--- a/arch/arm/kvm/hyp/switch.c
+++ b/arch/arm/kvm/hyp/switch.c
@@ -237,8 +237,10 @@ void __hyp_text __noreturn __hyp_panic(int cause)
vcpu = (struct kvm_vcpu *)read_sysreg(HTPIDR);
host_ctxt = kern_hyp_va(vcpu->arch.host_cpu_context);
+ __timer_save_state(vcpu);
__deactivate_traps(vcpu);
__deactivate_vm(vcpu);
+ __banked_restore_state(host_ctxt);
__sysreg_restore_state(host_ctxt);
}
diff --git a/arch/arm/kvm/reset.c b/arch/arm/kvm/reset.c
index 1da8b2d14550..5ed0c3ee33d6 100644
--- a/arch/arm/kvm/reset.c
+++ b/arch/arm/kvm/reset.c
@@ -37,16 +37,6 @@ static struct kvm_regs cortexa_regs_reset = {
.usr_regs.ARM_cpsr = SVC_MODE | PSR_A_BIT | PSR_I_BIT | PSR_F_BIT,
};
-static const struct kvm_irq_level cortexa_ptimer_irq = {
- { .irq = 30 },
- .level = 1,
-};
-
-static const struct kvm_irq_level cortexa_vtimer_irq = {
- { .irq = 27 },
- .level = 1,
-};
-
/*******************************************************************************
* Exported reset function
@@ -62,16 +52,12 @@ static const struct kvm_irq_level cortexa_vtimer_irq = {
int kvm_reset_vcpu(struct kvm_vcpu *vcpu)
{
struct kvm_regs *reset_regs;
- const struct kvm_irq_level *cpu_vtimer_irq;
- const struct kvm_irq_level *cpu_ptimer_irq;
switch (vcpu->arch.target) {
case KVM_ARM_TARGET_CORTEX_A7:
case KVM_ARM_TARGET_CORTEX_A15:
reset_regs = &cortexa_regs_reset;
vcpu->arch.midr = read_cpuid_id();
- cpu_vtimer_irq = &cortexa_vtimer_irq;
- cpu_ptimer_irq = &cortexa_ptimer_irq;
break;
default:
return -ENODEV;
@@ -84,5 +70,5 @@ int kvm_reset_vcpu(struct kvm_vcpu *vcpu)
kvm_reset_coprocs(vcpu);
/* Reset arch_timer context */
- return kvm_timer_vcpu_reset(vcpu, cpu_vtimer_irq, cpu_ptimer_irq);
+ return kvm_timer_vcpu_reset(vcpu);
}