Merge a minimal set of virt cleanups, for a base for the MM isolation patches.
Signed-off-by: Ingo Molnar <mingo@kernel.org>
u64 guest_id;
union hv_x64_msr_hypercall_contents hypercall_msr;
- if (x86_hyper != &x86_hyper_ms_hyperv)
+ if (x86_hyper_type != X86_HYPER_MS_HYPERV)
return;
/* Allocate percpu VP index */
#ifdef CONFIG_HYPERVISOR_GUEST
#include <asm/kvm_para.h>
+#include <asm/x86_init.h>
#include <asm/xen/hypervisor.h>
/*
* x86 hypervisor information
*/
+
+enum x86_hypervisor_type {
+ X86_HYPER_NATIVE = 0,
+ X86_HYPER_VMWARE,
+ X86_HYPER_MS_HYPERV,
+ X86_HYPER_XEN_PV,
+ X86_HYPER_XEN_HVM,
+ X86_HYPER_KVM,
+};
+
struct hypervisor_x86 {
/* Hypervisor name */
const char *name;
/* Detection routine */
uint32_t (*detect)(void);
- /* Platform setup (run once per boot) */
- void (*init_platform)(void);
-
- /* X2APIC detection (run once per boot) */
- bool (*x2apic_available)(void);
+ /* Hypervisor type */
+ enum x86_hypervisor_type type;
- /* pin current vcpu to specified physical cpu (run rarely) */
- void (*pin_vcpu)(int);
+ /* init time callbacks */
+ struct x86_hyper_init init;
- /* called during init_mem_mapping() to setup early mappings. */
- void (*init_mem_mapping)(void);
+ /* runtime callbacks */
+ struct x86_hyper_runtime runtime;
};
-extern const struct hypervisor_x86 *x86_hyper;
-
-/* Recognized hypervisors */
-extern const struct hypervisor_x86 x86_hyper_vmware;
-extern const struct hypervisor_x86 x86_hyper_ms_hyperv;
-extern const struct hypervisor_x86 x86_hyper_xen_pv;
-extern const struct hypervisor_x86 x86_hyper_xen_hvm;
-extern const struct hypervisor_x86 x86_hyper_kvm;
-
+extern enum x86_hypervisor_type x86_hyper_type;
extern void init_hypervisor_platform(void);
-extern bool hypervisor_x2apic_available(void);
-extern void hypervisor_pin_vcpu(int cpu);
-
-static inline void hypervisor_init_mem_mapping(void)
-{
- if (x86_hyper && x86_hyper->init_mem_mapping)
- x86_hyper->init_mem_mapping();
-}
#else
static inline void init_hypervisor_platform(void) { }
-static inline bool hypervisor_x2apic_available(void) { return false; }
-static inline void hypervisor_init_mem_mapping(void) { }
#endif /* CONFIG_HYPERVISOR_GUEST */
#endif /* _ASM_X86_HYPERVISOR_H */
void (*fixup_irqs)(void);
};
+/**
+ * struct x86_hyper_init - x86 hypervisor init functions
+ * @init_platform: platform setup
+ * @x2apic_available: X2APIC detection
+ * @init_mem_mapping: setup early mappings during init_mem_mapping()
+ */
+struct x86_hyper_init {
+ void (*init_platform)(void);
+ bool (*x2apic_available)(void);
+ void (*init_mem_mapping)(void);
+};
+
/**
* struct x86_init_ops - functions for platform specific setup
*
struct x86_init_timers timers;
struct x86_init_iommu iommu;
struct x86_init_pci pci;
+ struct x86_hyper_init hyper;
};
/**
struct x86_legacy_devices devices;
};
+/**
+ * struct x86_hyper_runtime - x86 hypervisor specific runtime callbacks
+ *
+ * @pin_vcpu: pin current vcpu to specified physical cpu (run rarely)
+ */
+struct x86_hyper_runtime {
+ void (*pin_vcpu)(int cpu);
+};
+
/**
* struct x86_platform_ops - platform specific runtime functions
* @calibrate_cpu: calibrate CPU
* possible in x86_early_init_platform_quirks() by
* only using the current x86_hardware_subarch
* semantics.
+ * @hyper: x86 hypervisor specific runtime callbacks
*/
struct x86_platform_ops {
unsigned long (*calibrate_cpu)(void);
void (*apic_post_init)(void);
struct x86_legacy_features legacy;
void (*set_legacy_features)(void);
+ struct x86_hyper_runtime hyper;
};
struct pci_dev;
* under KVM
*/
if (max_physical_apicid > 255 ||
- !hypervisor_x2apic_available()) {
+ !x86_init.hyper.x2apic_available()) {
pr_info("x2apic: IRQ remapping doesn't support X2APIC mode\n");
x2apic_disable();
return;
/*
* percpu heartbeat timer
*/
-static void uv_heartbeat(unsigned long ignored)
+static void uv_heartbeat(struct timer_list *timer)
{
- struct timer_list *timer = &uv_scir_info->timer;
unsigned char bits = uv_scir_info->state;
/* Flip heartbeat bit: */
struct timer_list *timer = &uv_cpu_scir_info(cpu)->timer;
uv_set_cpu_scir_bits(cpu, SCIR_CPU_HEARTBEAT|SCIR_CPU_ACTIVITY);
- setup_pinned_timer(timer, uv_heartbeat, cpu);
+ timer_setup(timer, uv_heartbeat, TIMER_PINNED);
timer->expires = jiffies + SCIR_CPU_HB_INTERVAL;
add_timer_on(timer, cpu);
uv_cpu_scir_info(cpu)->enabled = 1;
#include <asm/processor.h>
#include <asm/hypervisor.h>
+extern const struct hypervisor_x86 x86_hyper_vmware;
+extern const struct hypervisor_x86 x86_hyper_ms_hyperv;
+extern const struct hypervisor_x86 x86_hyper_xen_pv;
+extern const struct hypervisor_x86 x86_hyper_xen_hvm;
+extern const struct hypervisor_x86 x86_hyper_kvm;
+
static const __initconst struct hypervisor_x86 * const hypervisors[] =
{
#ifdef CONFIG_XEN_PV
#endif
};
-const struct hypervisor_x86 *x86_hyper;
-EXPORT_SYMBOL(x86_hyper);
+enum x86_hypervisor_type x86_hyper_type;
+EXPORT_SYMBOL(x86_hyper_type);
-static inline void __init
+static inline const struct hypervisor_x86 * __init
detect_hypervisor_vendor(void)
{
- const struct hypervisor_x86 *h, * const *p;
+ const struct hypervisor_x86 *h = NULL, * const *p;
uint32_t pri, max_pri = 0;
for (p = hypervisors; p < hypervisors + ARRAY_SIZE(hypervisors); p++) {
- h = *p;
- pri = h->detect();
- if (pri != 0 && pri > max_pri) {
+ pri = (*p)->detect();
+ if (pri > max_pri) {
max_pri = pri;
- x86_hyper = h;
+ h = *p;
}
}
- if (max_pri)
- pr_info("Hypervisor detected: %s\n", x86_hyper->name);
+ if (h)
+ pr_info("Hypervisor detected: %s\n", h->name);
+
+ return h;
}
-void __init init_hypervisor_platform(void)
+static void __init copy_array(const void *src, void *target, unsigned int size)
{
+ unsigned int i, n = size / sizeof(void *);
+ const void * const *from = (const void * const *)src;
+ const void **to = (const void **)target;
- detect_hypervisor_vendor();
-
- if (!x86_hyper)
- return;
-
- if (x86_hyper->init_platform)
- x86_hyper->init_platform();
+ for (i = 0; i < n; i++)
+ if (from[i])
+ to[i] = from[i];
}
-bool __init hypervisor_x2apic_available(void)
+void __init init_hypervisor_platform(void)
{
- return x86_hyper &&
- x86_hyper->x2apic_available &&
- x86_hyper->x2apic_available();
-}
+ const struct hypervisor_x86 *h;
-void hypervisor_pin_vcpu(int cpu)
-{
- if (!x86_hyper)
+ h = detect_hypervisor_vendor();
+
+ if (!h)
return;
- if (x86_hyper->pin_vcpu)
- x86_hyper->pin_vcpu(cpu);
- else
- WARN_ONCE(1, "vcpu pinning requested but not supported!\n");
+ copy_array(&h->init, &x86_init.hyper, sizeof(h->init));
+ copy_array(&h->runtime, &x86_platform.hyper, sizeof(h->runtime));
+
+ x86_hyper_type = h->type;
+ x86_init.hyper.init_platform();
}
#endif
}
-const __refconst struct hypervisor_x86 x86_hyper_ms_hyperv = {
+const __initconst struct hypervisor_x86 x86_hyper_ms_hyperv = {
.name = "Microsoft Hyper-V",
.detect = ms_hyperv_platform,
- .init_platform = ms_hyperv_init_platform,
+ .type = X86_HYPER_MS_HYPERV,
+ .init.init_platform = ms_hyperv_init_platform,
};
-EXPORT_SYMBOL(x86_hyper_ms_hyperv);
(eax & (1 << VMWARE_PORT_CMD_LEGACY_X2APIC)) != 0;
}
-const __refconst struct hypervisor_x86 x86_hyper_vmware = {
+const __initconst struct hypervisor_x86 x86_hyper_vmware = {
.name = "VMware",
.detect = vmware_platform,
- .init_platform = vmware_platform_setup,
- .x2apic_available = vmware_legacy_x2apic_available,
+ .type = X86_HYPER_VMWARE,
+ .init.init_platform = vmware_platform_setup,
+ .init.x2apic_available = vmware_legacy_x2apic_available,
};
-EXPORT_SYMBOL(x86_hyper_vmware);
return kvm_cpuid_base();
}
-const struct hypervisor_x86 x86_hyper_kvm __refconst = {
+const __initconst struct hypervisor_x86 x86_hyper_kvm = {
.name = "KVM",
.detect = kvm_detect,
- .x2apic_available = kvm_para_available,
+ .type = X86_HYPER_KVM,
+ .init.x2apic_available = kvm_para_available,
};
-EXPORT_SYMBOL_GPL(x86_hyper_kvm);
static __init int activate_jump_labels(void)
{
void __init x86_init_uint_noop(unsigned int unused) { }
int __init iommu_init_noop(void) { return 0; }
void iommu_shutdown_noop(void) { }
+bool __init bool_x86_init_noop(void) { return false; }
+void x86_op_int_noop(int cpu) { }
/*
* The platform setup functions are preset with the default functions
.init_irq = x86_default_pci_init_irq,
.fixup_irqs = x86_default_pci_fixup_irqs,
},
+
+ .hyper = {
+ .init_platform = x86_init_noop,
+ .x2apic_available = bool_x86_init_noop,
+ .init_mem_mapping = x86_init_noop,
+ },
};
struct x86_cpuinit_ops x86_cpuinit = {
.get_nmi_reason = default_get_nmi_reason,
.save_sched_clock_state = tsc_save_sched_clock_state,
.restore_sched_clock_state = tsc_restore_sched_clock_state,
+ .hyper.pin_vcpu = x86_op_int_noop,
};
EXPORT_SYMBOL_GPL(x86_platform);
load_cr3(swapper_pg_dir);
__flush_tlb_all();
- hypervisor_init_mem_mapping();
+ x86_init.hyper.init_mem_mapping();
early_memtest(0, max_pfn_mapped << PAGE_SHIFT);
}
return xen_cpuid_base();
}
-const struct hypervisor_x86 x86_hyper_xen_hvm = {
+const __initconst struct hypervisor_x86 x86_hyper_xen_hvm = {
.name = "Xen HVM",
.detect = xen_platform_hvm,
- .init_platform = xen_hvm_guest_init,
- .pin_vcpu = xen_pin_vcpu,
- .x2apic_available = xen_x2apic_para_available,
- .init_mem_mapping = xen_hvm_init_mem_mapping,
+ .type = X86_HYPER_XEN_HVM,
+ .init.init_platform = xen_hvm_guest_init,
+ .init.x2apic_available = xen_x2apic_para_available,
+ .init.init_mem_mapping = xen_hvm_init_mem_mapping,
+ .runtime.pin_vcpu = xen_pin_vcpu,
};
-EXPORT_SYMBOL(x86_hyper_xen_hvm);
return 0;
}
-const struct hypervisor_x86 x86_hyper_xen_pv = {
+const __initconst struct hypervisor_x86 x86_hyper_xen_pv = {
.name = "Xen PV",
.detect = xen_platform_pv,
- .pin_vcpu = xen_pin_vcpu,
+ .type = X86_HYPER_XEN_PV,
+ .runtime.pin_vcpu = xen_pin_vcpu,
};
-EXPORT_SYMBOL(x86_hyper_xen_pv);
{
int ret, t;
- if (x86_hyper != &x86_hyper_ms_hyperv)
+ if (x86_hyper_type != X86_HYPER_MS_HYPERV)
return -ENODEV;
init_completion(&probe_event);
/*
* Array of supported hypervisors.
*/
-static const struct hypervisor_x86 *vmmouse_supported_hypervisors[] = {
- &x86_hyper_vmware,
-#ifdef CONFIG_KVM_GUEST
- &x86_hyper_kvm,
-#endif
+static enum x86_hypervisor_type vmmouse_supported_hypervisors[] = {
+ X86_HYPER_VMWARE,
+ X86_HYPER_KVM,
};
/**
int i;
for (i = 0; i < ARRAY_SIZE(vmmouse_supported_hypervisors); i++)
- if (vmmouse_supported_hypervisors[i] == x86_hyper)
+ if (vmmouse_supported_hypervisors[i] == x86_hyper_type)
return true;
return false;
* Check if we are running on VMware's hypervisor and bail out
* if we are not.
*/
- if (x86_hyper != &x86_hyper_vmware)
+ if (x86_hyper_type != X86_HYPER_VMWARE)
return -ENODEV;
for (is_2m_pages = 0; is_2m_pages < VMW_BALLOON_NUM_PAGE_SIZES;
* Juergen Gross <jgross@suse.com>
*/
-#ifdef CONFIG_HYPERVISOR_GUEST
-#include <asm/hypervisor.h>
+#ifdef CONFIG_X86
+#include <asm/x86_init.h>
+static inline void hypervisor_pin_vcpu(int cpu)
+{
+ x86_platform.hyper.pin_vcpu(cpu);
+}
#else
static inline void hypervisor_pin_vcpu(int cpu)
{