-#ifndef _ASM_X86_KVM_HYPERV_H
-#define _ASM_X86_KVM_HYPERV_H
+#ifndef _ASM_X86_HYPERV_H
+#define _ASM_X86_HYPERV_H
#include <linux/types.h>
#define HYPERV_HYPERVISOR_PRESENT_BIT 0x80000000
#define HYPERV_CPUID_MIN 0x40000005
+#define HYPERV_CPUID_MAX 0x4000ffff
/*
* Feature identification. EAX indicates which features are available
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
*/
-#ifndef ASM_X86__HYPERVISOR_H
-#define ASM_X86__HYPERVISOR_H
+#ifndef _ASM_X86_HYPERVISOR_H
+#define _ASM_X86_HYPERVISOR_H
extern void init_hypervisor(struct cpuinfo_x86 *c);
extern void init_hypervisor_platform(void);
+/*
+ * x86 hypervisor information
+ */
+struct hypervisor_x86 {
+ /* Hypervisor name */
+ const char *name;
+
+ /* Detection routine */
+ bool (*detect)(void);
+
+ /* Adjust CPU feature bits (run once per CPU) */
+ void (*set_cpu_features)(struct cpuinfo_x86 *);
+
+ /* Platform setup (run once per boot) */
+ void (*init_platform)(void);
+};
+
+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;
+
#endif
-#ifndef ASM_X86__MSHYPER_H
-#define ASM_X86__MSHYPER_H
+#ifndef _ASM_X86_MSHYPER_H
+#define _ASM_X86_MSHYPER_H
-int ms_hyperv_platform(void);
-void __cpuinit ms_hyperv_set_feature_bits(struct cpuinfo_x86 *c);
+#include <linux/types.h>
+#include <asm/hyperv.h>
+
+struct ms_hyperv_info {
+ u32 features;
+ u32 hints;
+};
+
+extern struct ms_hyperv_info ms_hyperv;
#endif
/* Index into per_cpu list: */
u16 cpu_index;
#endif
- unsigned int x86_hyper_vendor;
- /* The layout of this field is hypervisor specific */
- unsigned int x86_hyper_features;
} __attribute__((__aligned__(SMP_CACHE_BYTES)));
#define X86_VENDOR_INTEL 0
#define X86_VENDOR_UNKNOWN 0xff
-#define X86_HYPER_VENDOR_NONE 0
-#define X86_HYPER_VENDOR_VMWARE 1
-#define X86_HYPER_VENDOR_MSFT 2
-
/*
* capabilities of CPUs
*/
+++ /dev/null
-/*
- * Copyright (C) 2008, VMware, Inc.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * 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, GOOD TITLE or
- * NON INFRINGEMENT. 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, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
- *
- */
-#ifndef ASM_X86__VMWARE_H
-#define ASM_X86__VMWARE_H
-
-extern void vmware_platform_setup(void);
-extern int vmware_platform(void);
-extern void vmware_set_feature_bits(struct cpuinfo_x86 *c);
-
-#endif
*/
#include <asm/processor.h>
-#include <asm/vmware.h>
-#include <asm/mshyperv.h>
#include <asm/hypervisor.h>
-static inline void __cpuinit
-detect_hypervisor_vendor(struct cpuinfo_x86 *c)
+/*
+ * Hypervisor detect order. This is specified explicitly here because
+ * some hypervisors might implement compatibility modes for other
+ * hypervisors and therefore need to be detected in specific sequence.
+ */
+static const __initconst struct hypervisor_x86 * const hypervisors[] =
{
- if (vmware_platform())
- c->x86_hyper_vendor = X86_HYPER_VENDOR_VMWARE;
- else if (ms_hyperv_platform())
- c->x86_hyper_vendor = X86_HYPER_VENDOR_MSFT;
- else
- c->x86_hyper_vendor = X86_HYPER_VENDOR_NONE;
-}
+ &x86_hyper_vmware,
+ &x86_hyper_ms_hyperv,
+};
-static inline void __cpuinit
-hypervisor_set_feature_bits(struct cpuinfo_x86 *c)
+const struct hypervisor_x86 *x86_hyper;
+
+static inline void __init
+detect_hypervisor_vendor(void)
{
- if (boot_cpu_data.x86_hyper_vendor == X86_HYPER_VENDOR_VMWARE)
- vmware_set_feature_bits(c);
- else if (boot_cpu_data.x86_hyper_vendor == X86_HYPER_VENDOR_MSFT)
- ms_hyperv_set_feature_bits(c);
- return;
+ const struct hypervisor_x86 *h, * const *p;
+
+ for (p = hypervisors; p < hypervisors + ARRAY_SIZE(hypervisors); p++) {
+ h = *p;
+ if (h->detect()) {
+ x86_hyper = h;
+ printk(KERN_INFO "Hypervisor detected: %s\n", h->name);
+ break;
+ }
+ }
}
void __cpuinit init_hypervisor(struct cpuinfo_x86 *c)
{
- detect_hypervisor_vendor(c);
- hypervisor_set_feature_bits(c);
+ if (x86_hyper && x86_hyper->set_cpu_features)
+ x86_hyper->set_cpu_features(c);
}
void __init init_hypervisor_platform(void)
{
+
+ detect_hypervisor_vendor();
+
+ if (!x86_hyper)
+ return;
+
init_hypervisor(&boot_cpu_data);
- if (boot_cpu_data.x86_hyper_vendor == X86_HYPER_VENDOR_VMWARE)
- vmware_platform_setup();
+
+ if (x86_hyper->init_platform)
+ x86_hyper->init_platform();
}
#include <linux/types.h>
#include <asm/processor.h>
+#include <asm/hypervisor.h>
#include <asm/hyperv.h>
#include <asm/mshyperv.h>
+struct ms_hyperv_info ms_hyperv;
-int ms_hyperv_platform(void)
+static bool __init ms_hyperv_platform(void)
{
- u32 eax, ebx, ecx, edx;
- char hyp_signature[13];
+ u32 eax;
+ u32 hyp_signature[3];
- cpuid(1, &eax, &ebx, &ecx, &edx);
- if (!(ecx & HYPERV_HYPERVISOR_PRESENT_BIT))
- return 0;
+ if (!boot_cpu_has(X86_FEATURE_HYPERVISOR))
+ return false;
- cpuid(HYPERV_CPUID_VENDOR_AND_MAX_FUNCTIONS, &eax, &ebx, &ecx, &edx);
- *(u32 *)(hyp_signature + 0) = ebx;
- *(u32 *)(hyp_signature + 4) = ecx;
- *(u32 *)(hyp_signature + 8) = edx;
+ cpuid(HYPERV_CPUID_VENDOR_AND_MAX_FUNCTIONS,
+ &eax, &hyp_signature[0], &hyp_signature[1], &hyp_signature[2]);
- if ((eax < HYPERV_CPUID_MIN) || (memcmp("Microsoft Hv", hyp_signature, 12)))
- return 0;
- return 1;
+ return eax >= HYPERV_CPUID_MIN &&
+ eax <= HYPERV_CPUID_MAX &&
+ !memcmp("Microsoft Hv", hyp_signature, 12);
}
-void __cpuinit ms_hyperv_set_feature_bits(struct cpuinfo_x86 *c)
+static void __init ms_hyperv_init_platform(void)
{
- u32 eax, ebx, ecx, edx;
-
- c->x86_hyper_features = 0;
/*
- * Extract the features, recommendations etc.
- * The first 9 bits will be used to track hypervisor features.
- * The next 6 bits will be used to track the hypervisor
- * recommendations.
+ * Extract the features and hints
*/
- cpuid(HYPERV_CPUID_FEATURES, &eax, &ebx, &ecx, &edx);
- c->x86_hyper_features |= (eax & 0x1ff);
+ ms_hyperv.features = cpuid_eax(HYPERV_CPUID_FEATURES);
+ ms_hyperv.hints = cpuid_eax(HYPERV_CPUID_ENLIGHTMENT_INFO);
- cpuid(HYPERV_CPUID_ENLIGHTMENT_INFO, &eax, &ebx, &ecx, &edx);
- c->x86_hyper_features |= ((eax & 0x3f) << 9);
- printk(KERN_INFO "Detected HyperV with features: %x\n",
- c->x86_hyper_features);
+ printk(KERN_INFO "HyperV: features 0x%x, hints 0x%x\n",
+ ms_hyperv.features, ms_hyperv.hints);
}
+
+const __refconst struct hypervisor_x86 x86_hyper_ms_hyperv = {
+ .name = "Microsoft HyperV",
+ .detect = ms_hyperv_platform,
+ .init_platform = ms_hyperv_init_platform,
+};
#include <linux/dmi.h>
#include <asm/div64.h>
-#include <asm/vmware.h>
#include <asm/x86_init.h>
+#include <asm/hypervisor.h>
#define CPUID_VMWARE_INFO_LEAF 0x40000000
#define VMWARE_HYPERVISOR_MAGIC 0x564D5868
return tsc_hz;
}
-void __init vmware_platform_setup(void)
+static void __init vmware_platform_setup(void)
{
uint32_t eax, ebx, ecx, edx;
* serial key should be enough, as this will always have a VMware
* specific string when running under VMware hypervisor.
*/
-int vmware_platform(void)
+static bool __init vmware_platform(void)
{
if (cpu_has_hypervisor) {
- unsigned int eax, ebx, ecx, edx;
- char hyper_vendor_id[13];
-
- cpuid(CPUID_VMWARE_INFO_LEAF, &eax, &ebx, &ecx, &edx);
- memcpy(hyper_vendor_id + 0, &ebx, 4);
- memcpy(hyper_vendor_id + 4, &ecx, 4);
- memcpy(hyper_vendor_id + 8, &edx, 4);
- hyper_vendor_id[12] = '\0';
- if (!strcmp(hyper_vendor_id, "VMwareVMware"))
- return 1;
+ unsigned int eax;
+ unsigned int hyper_vendor_id[3];
+
+ cpuid(CPUID_VMWARE_INFO_LEAF, &eax, &hyper_vendor_id[0],
+ &hyper_vendor_id[1], &hyper_vendor_id[2]);
+ if (!memcmp(hyper_vendor_id, "VMwareVMware", 12))
+ return true;
} else if (dmi_available && dmi_name_in_serial("VMware") &&
__vmware_platform())
- return 1;
+ return true;
- return 0;
+ return false;
}
/*
* so that the kernel could just trust the hypervisor with providing a
* reliable virtual TSC that is suitable for timekeeping.
*/
-void __cpuinit vmware_set_feature_bits(struct cpuinfo_x86 *c)
+static void __cpuinit vmware_set_cpu_features(struct cpuinfo_x86 *c)
{
set_cpu_cap(c, X86_FEATURE_CONSTANT_TSC);
set_cpu_cap(c, X86_FEATURE_TSC_RELIABLE);
}
+
+const __refconst struct hypervisor_x86 x86_hyper_vmware = {
+ .name = "VMware",
+ .detect = vmware_platform,
+ .set_cpu_features = vmware_set_cpu_features,
+ .init_platform = vmware_platform_setup,
+};
git://bbs.cooldavid.org / net-next-2.6.git / commitdiff