Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 1 | /* |
| 2 | * |
| 3 | * Copyright (c) 2009, Microsoft Corporation. |
| 4 | * |
| 5 | * This program is free software; you can redistribute it and/or modify it |
| 6 | * under the terms and conditions of the GNU General Public License, |
| 7 | * version 2, as published by the Free Software Foundation. |
| 8 | * |
| 9 | * This program is distributed in the hope it will be useful, but WITHOUT |
| 10 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| 11 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for |
| 12 | * more details. |
| 13 | * |
| 14 | * You should have received a copy of the GNU General Public License along with |
| 15 | * this program; if not, write to the Free Software Foundation, Inc., 59 Temple |
| 16 | * Place - Suite 330, Boston, MA 02111-1307 USA. |
| 17 | * |
| 18 | * Authors: |
| 19 | * Haiyang Zhang <haiyangz@microsoft.com> |
| 20 | * Hank Janssen <hjanssen@microsoft.com> |
| 21 | * |
| 22 | */ |
| 23 | |
Greg Kroah-Hartman | a0086dc | 2009-08-17 17:22:08 -0700 | [diff] [blame^] | 24 | #include <linux/kernel.h> |
| 25 | #include <linux/mm.h> |
Bill Pemberton | b7c947f | 2009-07-29 17:00:13 -0400 | [diff] [blame] | 26 | #include <linux/vmalloc.h> |
Greg Kroah-Hartman | 09d50ff | 2009-07-13 17:09:34 -0700 | [diff] [blame] | 27 | #include "include/logging.h" |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 28 | #include "VmbusPrivate.h" |
| 29 | |
Bill Pemberton | 454f18a | 2009-07-27 16:47:24 -0400 | [diff] [blame] | 30 | /* Globals */ |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 31 | |
Bill Pemberton | 454f18a | 2009-07-27 16:47:24 -0400 | [diff] [blame] | 32 | /* The one and only */ |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 33 | HV_CONTEXT gHvContext={ |
Greg Kroah-Hartman | 0e72761 | 2009-07-15 12:46:44 -0700 | [diff] [blame] | 34 | .SynICInitialized = false, |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 35 | .HypercallPage = NULL, |
| 36 | .SignalEventParam = NULL, |
| 37 | .SignalEventBuffer = NULL, |
| 38 | }; |
| 39 | |
| 40 | |
| 41 | /*++ |
| 42 | |
| 43 | Name: |
| 44 | HvQueryHypervisorPresence() |
| 45 | |
| 46 | Description: |
| 47 | Query the cpuid for presense of windows hypervisor |
| 48 | |
| 49 | --*/ |
| 50 | static int |
| 51 | HvQueryHypervisorPresence ( |
| 52 | void |
| 53 | ) |
| 54 | { |
| 55 | unsigned int eax; |
| 56 | unsigned int ebx; |
| 57 | unsigned int ecx; |
| 58 | unsigned int edx; |
| 59 | unsigned int op; |
| 60 | |
| 61 | eax = 0; |
| 62 | ebx = 0; |
| 63 | ecx = 0; |
| 64 | edx = 0; |
| 65 | op = HvCpuIdFunctionVersionAndFeatures; |
Greg Kroah-Hartman | f931a70 | 2009-07-29 15:37:12 -0700 | [diff] [blame] | 66 | cpuid(op, &eax, &ebx, &ecx, &edx); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 67 | |
| 68 | return (ecx & HV_PRESENT_BIT); |
| 69 | } |
| 70 | |
| 71 | |
| 72 | /*++ |
| 73 | |
| 74 | Name: |
| 75 | HvQueryHypervisorInfo() |
| 76 | |
| 77 | Description: |
| 78 | Get version info of the windows hypervisor |
| 79 | |
| 80 | --*/ |
| 81 | static int |
| 82 | HvQueryHypervisorInfo ( |
| 83 | void |
| 84 | ) |
| 85 | { |
| 86 | unsigned int eax; |
| 87 | unsigned int ebx; |
| 88 | unsigned int ecx; |
| 89 | unsigned int edx; |
| 90 | unsigned int maxLeaf; |
| 91 | unsigned int op; |
| 92 | |
Bill Pemberton | 454f18a | 2009-07-27 16:47:24 -0400 | [diff] [blame] | 93 | /* |
| 94 | * Its assumed that this is called after confirming that Viridian |
| 95 | * is present. Query id and revision. |
| 96 | */ |
| 97 | |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 98 | |
| 99 | eax = 0; |
| 100 | ebx = 0; |
| 101 | ecx = 0; |
| 102 | edx = 0; |
| 103 | op = HvCpuIdFunctionHvVendorAndMaxFunction; |
Greg Kroah-Hartman | f931a70 | 2009-07-29 15:37:12 -0700 | [diff] [blame] | 104 | cpuid(op, &eax, &ebx, &ecx, &edx); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 105 | |
| 106 | DPRINT_INFO(VMBUS, "Vendor ID: %c%c%c%c%c%c%c%c%c%c%c%c", |
Bill Pemberton | 454f18a | 2009-07-27 16:47:24 -0400 | [diff] [blame] | 107 | (ebx & 0xFF), |
| 108 | ((ebx >> 8) & 0xFF), |
| 109 | ((ebx >> 16) & 0xFF), |
| 110 | ((ebx >> 24) & 0xFF), |
| 111 | (ecx & 0xFF), |
| 112 | ((ecx >> 8) & 0xFF), |
| 113 | ((ecx >> 16) & 0xFF), |
| 114 | ((ecx >> 24) & 0xFF), |
| 115 | (edx & 0xFF), |
| 116 | ((edx >> 8) & 0xFF), |
| 117 | ((edx >> 16) & 0xFF), |
| 118 | ((edx >> 24) & 0xFF)); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 119 | |
| 120 | maxLeaf = eax; |
| 121 | eax = 0; |
| 122 | ebx = 0; |
| 123 | ecx = 0; |
| 124 | edx = 0; |
| 125 | op = HvCpuIdFunctionHvInterface; |
Greg Kroah-Hartman | f931a70 | 2009-07-29 15:37:12 -0700 | [diff] [blame] | 126 | cpuid(op, &eax, &ebx, &ecx, &edx); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 127 | |
| 128 | DPRINT_INFO(VMBUS, "Interface ID: %c%c%c%c", |
Bill Pemberton | 454f18a | 2009-07-27 16:47:24 -0400 | [diff] [blame] | 129 | (eax & 0xFF), |
| 130 | ((eax >> 8) & 0xFF), |
| 131 | ((eax >> 16) & 0xFF), |
| 132 | ((eax >> 24) & 0xFF)); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 133 | |
| 134 | if (maxLeaf >= HvCpuIdFunctionMsHvVersion) { |
Bill Pemberton | 454f18a | 2009-07-27 16:47:24 -0400 | [diff] [blame] | 135 | eax = 0; |
| 136 | ebx = 0; |
| 137 | ecx = 0; |
| 138 | edx = 0; |
| 139 | op = HvCpuIdFunctionMsHvVersion; |
Greg Kroah-Hartman | f931a70 | 2009-07-29 15:37:12 -0700 | [diff] [blame] | 140 | cpuid(op, &eax, &ebx, &ecx, &edx); |
Bill Pemberton | 454f18a | 2009-07-27 16:47:24 -0400 | [diff] [blame] | 141 | DPRINT_INFO(VMBUS, "OS Build:%d-%d.%d-%d-%d.%d", |
| 142 | eax, |
| 143 | ebx >> 16, |
| 144 | ebx & 0xFFFF, |
| 145 | ecx, |
| 146 | edx >> 24, |
| 147 | edx & 0xFFFFFF); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 148 | } |
| 149 | return maxLeaf; |
| 150 | } |
| 151 | |
| 152 | |
| 153 | /*++ |
| 154 | |
| 155 | Name: |
| 156 | HvDoHypercall() |
| 157 | |
| 158 | Description: |
| 159 | Invoke the specified hypercall |
| 160 | |
| 161 | --*/ |
Greg Kroah-Hartman | 5947143 | 2009-07-14 15:10:26 -0700 | [diff] [blame] | 162 | static u64 |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 163 | HvDoHypercall ( |
Greg Kroah-Hartman | 5947143 | 2009-07-14 15:10:26 -0700 | [diff] [blame] | 164 | u64 Control, |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 165 | void* Input, |
| 166 | void* Output |
| 167 | ) |
| 168 | { |
Greg Kroah-Hartman | 530cf20 | 2009-07-16 22:31:15 -0700 | [diff] [blame] | 169 | #ifdef CONFIG_X86_64 |
Greg Kroah-Hartman | 5947143 | 2009-07-14 15:10:26 -0700 | [diff] [blame] | 170 | u64 hvStatus=0; |
Greg Kroah-Hartman | fa56d36 | 2009-07-29 15:39:27 -0700 | [diff] [blame] | 171 | u64 inputAddress = (Input)? virt_to_phys(Input) : 0; |
| 172 | u64 outputAddress = (Output)? virt_to_phys(Output) : 0; |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 173 | volatile void* hypercallPage = gHvContext.HypercallPage; |
| 174 | |
| 175 | DPRINT_DBG(VMBUS, "Hypercall <control %llx input phys %llx virt %p output phys %llx virt %p hypercall %p>", |
| 176 | Control, |
| 177 | inputAddress, |
| 178 | Input, |
| 179 | outputAddress, |
| 180 | Output, |
| 181 | hypercallPage); |
| 182 | |
| 183 | __asm__ __volatile__ ("mov %0, %%r8" : : "r" (outputAddress): "r8"); |
| 184 | __asm__ __volatile__ ("call *%3" : "=a"(hvStatus): "c" (Control), "d" (inputAddress), "m" (hypercallPage)); |
| 185 | |
| 186 | DPRINT_DBG(VMBUS, "Hypercall <return %llx>", hvStatus); |
| 187 | |
| 188 | return hvStatus; |
| 189 | |
| 190 | #else |
| 191 | |
Greg Kroah-Hartman | 4d64311 | 2009-07-14 15:09:36 -0700 | [diff] [blame] | 192 | u32 controlHi = Control >> 32; |
| 193 | u32 controlLo = Control & 0xFFFFFFFF; |
| 194 | u32 hvStatusHi = 1; |
| 195 | u32 hvStatusLo = 1; |
Greg Kroah-Hartman | fa56d36 | 2009-07-29 15:39:27 -0700 | [diff] [blame] | 196 | u64 inputAddress = (Input) ? virt_to_phys(Input) : 0; |
Greg Kroah-Hartman | 4d64311 | 2009-07-14 15:09:36 -0700 | [diff] [blame] | 197 | u32 inputAddressHi = inputAddress >> 32; |
| 198 | u32 inputAddressLo = inputAddress & 0xFFFFFFFF; |
Greg Kroah-Hartman | fa56d36 | 2009-07-29 15:39:27 -0700 | [diff] [blame] | 199 | u64 outputAddress = (Output) ? virt_to_phys(Output) : 0; |
Greg Kroah-Hartman | 4d64311 | 2009-07-14 15:09:36 -0700 | [diff] [blame] | 200 | u32 outputAddressHi = outputAddress >> 32; |
| 201 | u32 outputAddressLo = outputAddress & 0xFFFFFFFF; |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 202 | volatile void* hypercallPage = gHvContext.HypercallPage; |
| 203 | |
| 204 | DPRINT_DBG(VMBUS, "Hypercall <control %llx input %p output %p>", |
| 205 | Control, |
| 206 | Input, |
| 207 | Output); |
| 208 | |
| 209 | __asm__ __volatile__ ("call *%8" : "=d"(hvStatusHi), "=a"(hvStatusLo) : "d" (controlHi), "a" (controlLo), "b" (inputAddressHi), "c" (inputAddressLo), "D"(outputAddressHi), "S"(outputAddressLo), "m" (hypercallPage)); |
| 210 | |
| 211 | |
Greg Kroah-Hartman | 5947143 | 2009-07-14 15:10:26 -0700 | [diff] [blame] | 212 | DPRINT_DBG(VMBUS, "Hypercall <return %llx>", hvStatusLo | ((u64)hvStatusHi << 32)); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 213 | |
Greg Kroah-Hartman | 5947143 | 2009-07-14 15:10:26 -0700 | [diff] [blame] | 214 | return (hvStatusLo | ((u64)hvStatusHi << 32)); |
Bill Pemberton | 454f18a | 2009-07-27 16:47:24 -0400 | [diff] [blame] | 215 | #endif /* x86_64 */ |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 216 | } |
| 217 | |
| 218 | /*++ |
| 219 | |
| 220 | Name: |
| 221 | HvInit() |
| 222 | |
| 223 | Description: |
| 224 | Main initialization routine. This routine must be called |
| 225 | before any other routines in here are called |
| 226 | |
| 227 | --*/ |
Greg Kroah-Hartman | 98d9fac | 2009-08-17 17:20:55 -0700 | [diff] [blame] | 228 | int HvInit (void) |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 229 | { |
| 230 | int ret=0; |
| 231 | int maxLeaf; |
| 232 | HV_X64_MSR_HYPERCALL_CONTENTS hypercallMsr; |
Greg Kroah-Hartman | 949cada | 2009-07-29 09:06:51 -0700 | [diff] [blame] | 233 | void *virtAddr = NULL; |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 234 | |
| 235 | DPRINT_ENTER(VMBUS); |
| 236 | |
Bill Pemberton | 44f357f | 2009-07-28 13:46:26 -0400 | [diff] [blame] | 237 | memset(gHvContext.synICEventPage, 0, sizeof(void *) * MAX_NUM_CPUS); |
| 238 | memset(gHvContext.synICMessagePage, 0, sizeof(void *) * MAX_NUM_CPUS); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 239 | |
| 240 | if (!HvQueryHypervisorPresence()) |
| 241 | { |
| 242 | DPRINT_ERR(VMBUS, "No Windows hypervisor detected!!"); |
| 243 | goto Cleanup; |
| 244 | } |
| 245 | |
| 246 | DPRINT_INFO(VMBUS, "Windows hypervisor detected! Retrieving more info..."); |
| 247 | |
| 248 | maxLeaf = HvQueryHypervisorInfo(); |
Bill Pemberton | 454f18a | 2009-07-27 16:47:24 -0400 | [diff] [blame] | 249 | /* HvQueryHypervisorFeatures(maxLeaf); */ |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 250 | |
Bill Pemberton | 454f18a | 2009-07-27 16:47:24 -0400 | [diff] [blame] | 251 | /* Determine if we are running on xenlinux (ie x2v shim) or native linux */ |
Greg Kroah-Hartman | a51ed7d | 2009-08-17 17:20:02 -0700 | [diff] [blame] | 252 | rdmsrl(HV_X64_MSR_GUEST_OS_ID, gHvContext.GuestId); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 253 | if (gHvContext.GuestId == 0) |
| 254 | { |
Bill Pemberton | 454f18a | 2009-07-27 16:47:24 -0400 | [diff] [blame] | 255 | /* Write our OS info */ |
Greg Kroah-Hartman | a51ed7d | 2009-08-17 17:20:02 -0700 | [diff] [blame] | 256 | wrmsrl(HV_X64_MSR_GUEST_OS_ID, HV_LINUX_GUEST_ID); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 257 | |
| 258 | gHvContext.GuestId = HV_LINUX_GUEST_ID; |
| 259 | } |
| 260 | |
Bill Pemberton | 454f18a | 2009-07-27 16:47:24 -0400 | [diff] [blame] | 261 | /* See if the hypercall page is already set */ |
Greg Kroah-Hartman | a51ed7d | 2009-08-17 17:20:02 -0700 | [diff] [blame] | 262 | rdmsrl(HV_X64_MSR_HYPERCALL, hypercallMsr.AsUINT64); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 263 | if (gHvContext.GuestId == HV_LINUX_GUEST_ID) |
| 264 | { |
Bill Pemberton | 454f18a | 2009-07-27 16:47:24 -0400 | [diff] [blame] | 265 | /* Allocate the hypercall page memory */ |
Greg Kroah-Hartman | bfc30aae | 2009-07-29 15:40:18 -0700 | [diff] [blame] | 266 | /* virtAddr = osd_PageAlloc(1); */ |
| 267 | virtAddr = osd_VirtualAllocExec(PAGE_SIZE); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 268 | |
| 269 | if (!virtAddr) |
| 270 | { |
| 271 | DPRINT_ERR(VMBUS, "unable to allocate hypercall page!!"); |
| 272 | goto Cleanup; |
| 273 | } |
| 274 | |
| 275 | hypercallMsr.Enable = 1; |
Greg Kroah-Hartman | fa56d36 | 2009-07-29 15:39:27 -0700 | [diff] [blame] | 276 | /* hypercallMsr.GuestPhysicalAddress = virt_to_phys(virtAddr) >> PAGE_SHIFT; */ |
| 277 | hypercallMsr.GuestPhysicalAddress = vmalloc_to_pfn(virtAddr); |
Greg Kroah-Hartman | a51ed7d | 2009-08-17 17:20:02 -0700 | [diff] [blame] | 278 | wrmsrl(HV_X64_MSR_HYPERCALL, hypercallMsr.AsUINT64); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 279 | |
Bill Pemberton | 454f18a | 2009-07-27 16:47:24 -0400 | [diff] [blame] | 280 | /* Confirm that hypercall page did get setup. */ |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 281 | hypercallMsr.AsUINT64 = 0; |
Greg Kroah-Hartman | a51ed7d | 2009-08-17 17:20:02 -0700 | [diff] [blame] | 282 | rdmsrl(HV_X64_MSR_HYPERCALL, hypercallMsr.AsUINT64); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 283 | if (!hypercallMsr.Enable) |
| 284 | { |
| 285 | DPRINT_ERR(VMBUS, "unable to set hypercall page!!"); |
| 286 | goto Cleanup; |
| 287 | } |
| 288 | |
| 289 | gHvContext.HypercallPage = virtAddr; |
| 290 | } |
| 291 | else |
| 292 | { |
| 293 | DPRINT_ERR(VMBUS, "Unknown guest id (0x%llx)!!", gHvContext.GuestId); |
| 294 | goto Cleanup; |
| 295 | } |
| 296 | |
Greg Kroah-Hartman | 2701f68 | 2009-07-16 12:36:37 -0700 | [diff] [blame] | 297 | DPRINT_INFO(VMBUS, "Hypercall page VA=%p, PA=0x%0llx", |
| 298 | gHvContext.HypercallPage, |
| 299 | (u64)hypercallMsr.GuestPhysicalAddress << PAGE_SHIFT); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 300 | |
Bill Pemberton | 454f18a | 2009-07-27 16:47:24 -0400 | [diff] [blame] | 301 | /* Setup the global signal event param for the signal event hypercall */ |
Greg Kroah-Hartman | e40d37c | 2009-07-15 12:47:22 -0700 | [diff] [blame] | 302 | gHvContext.SignalEventBuffer = kmalloc(sizeof(HV_INPUT_SIGNAL_EVENT_BUFFER), GFP_KERNEL); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 303 | if (!gHvContext.SignalEventBuffer) |
| 304 | { |
| 305 | goto Cleanup; |
| 306 | } |
| 307 | |
Greg Kroah-Hartman | c4b0bc9 | 2009-07-14 15:12:46 -0700 | [diff] [blame] | 308 | gHvContext.SignalEventParam = (PHV_INPUT_SIGNAL_EVENT)(ALIGN_UP((unsigned long)gHvContext.SignalEventBuffer, HV_HYPERCALL_PARAM_ALIGN)); |
Greg Kroah-Hartman | 4d64311 | 2009-07-14 15:09:36 -0700 | [diff] [blame] | 309 | gHvContext.SignalEventParam->ConnectionId.Asu32 = 0; |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 310 | gHvContext.SignalEventParam->ConnectionId.u.Id = VMBUS_EVENT_CONNECTION_ID; |
| 311 | gHvContext.SignalEventParam->FlagNumber = 0; |
| 312 | gHvContext.SignalEventParam->RsvdZ = 0; |
| 313 | |
Bill Pemberton | 454f18a | 2009-07-27 16:47:24 -0400 | [diff] [blame] | 314 | /* DPRINT_DBG(VMBUS, "My id %llu", HvGetCurrentPartitionId()); */ |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 315 | |
| 316 | DPRINT_EXIT(VMBUS); |
| 317 | |
| 318 | return ret; |
| 319 | |
| 320 | Cleanup: |
| 321 | if (virtAddr) |
| 322 | { |
| 323 | if (hypercallMsr.Enable) |
| 324 | { |
| 325 | hypercallMsr.AsUINT64 = 0; |
Greg Kroah-Hartman | a51ed7d | 2009-08-17 17:20:02 -0700 | [diff] [blame] | 326 | wrmsrl(HV_X64_MSR_HYPERCALL, hypercallMsr.AsUINT64); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 327 | } |
| 328 | |
Bill Pemberton | b7c947f | 2009-07-29 17:00:13 -0400 | [diff] [blame] | 329 | vfree(virtAddr); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 330 | } |
| 331 | ret = -1; |
| 332 | DPRINT_EXIT(VMBUS); |
| 333 | |
| 334 | return ret; |
| 335 | } |
| 336 | |
| 337 | |
| 338 | /*++ |
| 339 | |
| 340 | Name: |
| 341 | HvCleanup() |
| 342 | |
| 343 | Description: |
| 344 | Cleanup routine. This routine is called normally during driver unloading or exiting. |
| 345 | |
| 346 | --*/ |
Greg Kroah-Hartman | 98d9fac | 2009-08-17 17:20:55 -0700 | [diff] [blame] | 347 | void HvCleanup (void) |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 348 | { |
| 349 | HV_X64_MSR_HYPERCALL_CONTENTS hypercallMsr; |
| 350 | |
| 351 | DPRINT_ENTER(VMBUS); |
| 352 | |
| 353 | if (gHvContext.SignalEventBuffer) |
| 354 | { |
Greg Kroah-Hartman | 8c69f52 | 2009-07-15 12:48:29 -0700 | [diff] [blame] | 355 | kfree(gHvContext.SignalEventBuffer); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 356 | gHvContext.SignalEventBuffer = NULL; |
| 357 | gHvContext.SignalEventParam = NULL; |
| 358 | } |
| 359 | |
| 360 | if (gHvContext.GuestId == HV_LINUX_GUEST_ID) |
| 361 | { |
| 362 | if (gHvContext.HypercallPage) |
| 363 | { |
| 364 | hypercallMsr.AsUINT64 = 0; |
Greg Kroah-Hartman | a51ed7d | 2009-08-17 17:20:02 -0700 | [diff] [blame] | 365 | wrmsrl(HV_X64_MSR_HYPERCALL, hypercallMsr.AsUINT64); |
Bill Pemberton | b7c947f | 2009-07-29 17:00:13 -0400 | [diff] [blame] | 366 | vfree(gHvContext.HypercallPage); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 367 | gHvContext.HypercallPage = NULL; |
| 368 | } |
| 369 | } |
| 370 | |
| 371 | DPRINT_EXIT(VMBUS); |
| 372 | |
| 373 | } |
| 374 | |
| 375 | |
| 376 | /*++ |
| 377 | |
| 378 | Name: |
| 379 | HvPostMessage() |
| 380 | |
| 381 | Description: |
| 382 | Post a message using the hypervisor message IPC. This |
| 383 | involves a hypercall. |
| 384 | |
| 385 | --*/ |
Greg Kroah-Hartman | 98d9fac | 2009-08-17 17:20:55 -0700 | [diff] [blame] | 386 | HV_STATUS HvPostMessage( |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 387 | HV_CONNECTION_ID connectionId, |
| 388 | HV_MESSAGE_TYPE messageType, |
Greg Kroah-Hartman | 8282c40 | 2009-07-14 15:06:28 -0700 | [diff] [blame] | 389 | void * payload, |
Greg Kroah-Hartman | 45635d9 | 2009-07-14 15:14:20 -0700 | [diff] [blame] | 390 | size_t payloadSize |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 391 | ) |
| 392 | { |
| 393 | struct alignedInput { |
Greg Kroah-Hartman | 5947143 | 2009-07-14 15:10:26 -0700 | [diff] [blame] | 394 | u64 alignment8; |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 395 | HV_INPUT_POST_MESSAGE msg; |
| 396 | }; |
| 397 | |
| 398 | PHV_INPUT_POST_MESSAGE alignedMsg; |
| 399 | HV_STATUS status; |
Greg Kroah-Hartman | c4b0bc9 | 2009-07-14 15:12:46 -0700 | [diff] [blame] | 400 | unsigned long addr; |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 401 | |
| 402 | if (payloadSize > HV_MESSAGE_PAYLOAD_BYTE_COUNT) |
| 403 | { |
| 404 | return -1; |
| 405 | } |
| 406 | |
Greg Kroah-Hartman | 0a72f3c | 2009-07-15 12:48:01 -0700 | [diff] [blame] | 407 | addr = (unsigned long)kmalloc(sizeof(struct alignedInput), GFP_ATOMIC); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 408 | |
| 409 | if (!addr) |
| 410 | { |
| 411 | return -1; |
| 412 | } |
| 413 | |
| 414 | alignedMsg = (PHV_INPUT_POST_MESSAGE)(ALIGN_UP(addr, HV_HYPERCALL_PARAM_ALIGN)); |
| 415 | |
| 416 | alignedMsg->ConnectionId = connectionId; |
| 417 | alignedMsg->MessageType = messageType; |
| 418 | alignedMsg->PayloadSize = payloadSize; |
| 419 | memcpy((void*)alignedMsg->Payload, payload, payloadSize); |
| 420 | |
Greg Kroah-Hartman | 949cada | 2009-07-29 09:06:51 -0700 | [diff] [blame] | 421 | status = HvDoHypercall(HvCallPostMessage, alignedMsg, NULL) & 0xFFFF; |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 422 | |
Greg Kroah-Hartman | 8c69f52 | 2009-07-15 12:48:29 -0700 | [diff] [blame] | 423 | kfree((void*)addr); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 424 | |
| 425 | return status; |
| 426 | } |
| 427 | |
| 428 | |
| 429 | /*++ |
| 430 | |
| 431 | Name: |
| 432 | HvSignalEvent() |
| 433 | |
| 434 | Description: |
| 435 | Signal an event on the specified connection using the hypervisor event IPC. This |
| 436 | involves a hypercall. |
| 437 | |
| 438 | --*/ |
Greg Kroah-Hartman | 98d9fac | 2009-08-17 17:20:55 -0700 | [diff] [blame] | 439 | HV_STATUS HvSignalEvent(void) |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 440 | { |
| 441 | HV_STATUS status; |
| 442 | |
Greg Kroah-Hartman | 949cada | 2009-07-29 09:06:51 -0700 | [diff] [blame] | 443 | status = HvDoHypercall(HvCallSignalEvent, gHvContext.SignalEventParam, NULL) & 0xFFFF; |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 444 | |
| 445 | return status; |
| 446 | } |
| 447 | |
| 448 | |
| 449 | /*++ |
| 450 | |
| 451 | Name: |
| 452 | HvSynicInit() |
| 453 | |
| 454 | Description: |
| 455 | Initialize the Synthethic Interrupt Controller. If it is already initialized by |
| 456 | another entity (ie x2v shim), we need to retrieve the initialized message and event pages. |
| 457 | Otherwise, we create and initialize the message and event pages. |
| 458 | |
| 459 | --*/ |
Greg Kroah-Hartman | 98d9fac | 2009-08-17 17:20:55 -0700 | [diff] [blame] | 460 | int HvSynicInit (u32 irqVector) |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 461 | { |
Greg Kroah-Hartman | 5947143 | 2009-07-14 15:10:26 -0700 | [diff] [blame] | 462 | u64 version; |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 463 | HV_SYNIC_SIMP simp; |
| 464 | HV_SYNIC_SIEFP siefp; |
| 465 | HV_SYNIC_SINT sharedSint; |
| 466 | HV_SYNIC_SCONTROL sctrl; |
Greg Kroah-Hartman | 5947143 | 2009-07-14 15:10:26 -0700 | [diff] [blame] | 467 | u64 guestID; |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 468 | int ret=0; |
| 469 | |
| 470 | DPRINT_ENTER(VMBUS); |
| 471 | |
| 472 | if (!gHvContext.HypercallPage) |
| 473 | { |
| 474 | DPRINT_EXIT(VMBUS); |
| 475 | return ret; |
| 476 | } |
| 477 | |
Bill Pemberton | 454f18a | 2009-07-27 16:47:24 -0400 | [diff] [blame] | 478 | /* Check the version */ |
Greg Kroah-Hartman | a51ed7d | 2009-08-17 17:20:02 -0700 | [diff] [blame] | 479 | rdmsrl(HV_X64_MSR_SVERSION, version); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 480 | |
| 481 | DPRINT_INFO(VMBUS, "SynIC version: %llx", version); |
| 482 | |
Bill Pemberton | 454f18a | 2009-07-27 16:47:24 -0400 | [diff] [blame] | 483 | /* TODO: Handle SMP */ |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 484 | if (gHvContext.GuestId == HV_XENLINUX_GUEST_ID) |
| 485 | { |
| 486 | DPRINT_INFO(VMBUS, "Skipping SIMP and SIEFP setup since it is already set."); |
| 487 | |
Greg Kroah-Hartman | a51ed7d | 2009-08-17 17:20:02 -0700 | [diff] [blame] | 488 | rdmsrl(HV_X64_MSR_SIMP, simp.AsUINT64); |
| 489 | rdmsrl(HV_X64_MSR_SIEFP, siefp.AsUINT64); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 490 | |
| 491 | DPRINT_DBG(VMBUS, "Simp: %llx, Sifep: %llx", simp.AsUINT64, siefp.AsUINT64); |
| 492 | |
Bill Pemberton | 454f18a | 2009-07-27 16:47:24 -0400 | [diff] [blame] | 493 | /* Determine if we are running on xenlinux (ie x2v shim) or native linux */ |
Greg Kroah-Hartman | a51ed7d | 2009-08-17 17:20:02 -0700 | [diff] [blame] | 494 | rdmsrl(HV_X64_MSR_GUEST_OS_ID, guestID); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 495 | if (guestID == HV_LINUX_GUEST_ID) |
| 496 | { |
Greg Kroah-Hartman | fa56d36 | 2009-07-29 15:39:27 -0700 | [diff] [blame] | 497 | gHvContext.synICMessagePage[0] = phys_to_virt(simp.BaseSimpGpa << PAGE_SHIFT); |
| 498 | gHvContext.synICEventPage[0] = phys_to_virt(siefp.BaseSiefpGpa << PAGE_SHIFT); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 499 | } |
| 500 | else |
| 501 | { |
| 502 | DPRINT_ERR(VMBUS, "unknown guest id!!"); |
| 503 | goto Cleanup; |
| 504 | } |
| 505 | DPRINT_DBG(VMBUS, "MAPPED: Simp: %p, Sifep: %p", gHvContext.synICMessagePage[0], gHvContext.synICEventPage[0]); |
| 506 | } |
| 507 | else |
| 508 | { |
Greg Kroah-Hartman | bfc30aae | 2009-07-29 15:40:18 -0700 | [diff] [blame] | 509 | gHvContext.synICMessagePage[0] = osd_PageAlloc(1); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 510 | if (gHvContext.synICMessagePage[0] == NULL) |
| 511 | { |
| 512 | DPRINT_ERR(VMBUS, "unable to allocate SYNIC message page!!"); |
| 513 | goto Cleanup; |
| 514 | } |
| 515 | |
Greg Kroah-Hartman | bfc30aae | 2009-07-29 15:40:18 -0700 | [diff] [blame] | 516 | gHvContext.synICEventPage[0] = osd_PageAlloc(1); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 517 | if (gHvContext.synICEventPage[0] == NULL) |
| 518 | { |
| 519 | DPRINT_ERR(VMBUS, "unable to allocate SYNIC event page!!"); |
| 520 | goto Cleanup; |
| 521 | } |
| 522 | |
Bill Pemberton | 454f18a | 2009-07-27 16:47:24 -0400 | [diff] [blame] | 523 | /* Setup the Synic's message page */ |
Greg Kroah-Hartman | a51ed7d | 2009-08-17 17:20:02 -0700 | [diff] [blame] | 524 | rdmsrl(HV_X64_MSR_SIMP, simp.AsUINT64); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 525 | simp.SimpEnabled = 1; |
Greg Kroah-Hartman | fa56d36 | 2009-07-29 15:39:27 -0700 | [diff] [blame] | 526 | simp.BaseSimpGpa = virt_to_phys(gHvContext.synICMessagePage[0]) >> PAGE_SHIFT; |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 527 | |
| 528 | DPRINT_DBG(VMBUS, "HV_X64_MSR_SIMP msr set to: %llx", simp.AsUINT64); |
| 529 | |
Greg Kroah-Hartman | a51ed7d | 2009-08-17 17:20:02 -0700 | [diff] [blame] | 530 | wrmsrl(HV_X64_MSR_SIMP, simp.AsUINT64); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 531 | |
Bill Pemberton | 454f18a | 2009-07-27 16:47:24 -0400 | [diff] [blame] | 532 | /* Setup the Synic's event page */ |
Greg Kroah-Hartman | a51ed7d | 2009-08-17 17:20:02 -0700 | [diff] [blame] | 533 | rdmsrl(HV_X64_MSR_SIEFP, siefp.AsUINT64); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 534 | siefp.SiefpEnabled = 1; |
Greg Kroah-Hartman | fa56d36 | 2009-07-29 15:39:27 -0700 | [diff] [blame] | 535 | siefp.BaseSiefpGpa = virt_to_phys(gHvContext.synICEventPage[0]) >> PAGE_SHIFT; |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 536 | |
| 537 | DPRINT_DBG(VMBUS, "HV_X64_MSR_SIEFP msr set to: %llx", siefp.AsUINT64); |
| 538 | |
Greg Kroah-Hartman | a51ed7d | 2009-08-17 17:20:02 -0700 | [diff] [blame] | 539 | wrmsrl(HV_X64_MSR_SIEFP, siefp.AsUINT64); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 540 | } |
Bill Pemberton | 454f18a | 2009-07-27 16:47:24 -0400 | [diff] [blame] | 541 | /* Setup the interception SINT. */ |
Greg Kroah-Hartman | a51ed7d | 2009-08-17 17:20:02 -0700 | [diff] [blame] | 542 | /* wrmsrl((HV_X64_MSR_SINT0 + HV_SYNIC_INTERCEPTION_SINT_INDEX), */ |
Bill Pemberton | 454f18a | 2009-07-27 16:47:24 -0400 | [diff] [blame] | 543 | /* interceptionSint.AsUINT64); */ |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 544 | |
Bill Pemberton | 454f18a | 2009-07-27 16:47:24 -0400 | [diff] [blame] | 545 | /* Setup the shared SINT. */ |
Greg Kroah-Hartman | a51ed7d | 2009-08-17 17:20:02 -0700 | [diff] [blame] | 546 | rdmsrl(HV_X64_MSR_SINT0 + VMBUS_MESSAGE_SINT, sharedSint.AsUINT64); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 547 | |
| 548 | sharedSint.AsUINT64 = 0; |
Bill Pemberton | 454f18a | 2009-07-27 16:47:24 -0400 | [diff] [blame] | 549 | sharedSint.Vector = irqVector; /* HV_SHARED_SINT_IDT_VECTOR + 0x20; */ |
| 550 | sharedSint.Masked = false; |
| 551 | sharedSint.AutoEoi = true; |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 552 | |
| 553 | DPRINT_DBG(VMBUS, "HV_X64_MSR_SINT1 msr set to: %llx", sharedSint.AsUINT64); |
| 554 | |
Greg Kroah-Hartman | a51ed7d | 2009-08-17 17:20:02 -0700 | [diff] [blame] | 555 | wrmsrl(HV_X64_MSR_SINT0 + VMBUS_MESSAGE_SINT, sharedSint.AsUINT64); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 556 | |
Bill Pemberton | 454f18a | 2009-07-27 16:47:24 -0400 | [diff] [blame] | 557 | /* Enable the global synic bit */ |
Greg Kroah-Hartman | a51ed7d | 2009-08-17 17:20:02 -0700 | [diff] [blame] | 558 | rdmsrl(HV_X64_MSR_SCONTROL, sctrl.AsUINT64); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 559 | sctrl.Enable = 1; |
| 560 | |
Greg Kroah-Hartman | a51ed7d | 2009-08-17 17:20:02 -0700 | [diff] [blame] | 561 | wrmsrl(HV_X64_MSR_SCONTROL, sctrl.AsUINT64); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 562 | |
Greg Kroah-Hartman | 0e72761 | 2009-07-15 12:46:44 -0700 | [diff] [blame] | 563 | gHvContext.SynICInitialized = true; |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 564 | |
| 565 | DPRINT_EXIT(VMBUS); |
| 566 | |
| 567 | return ret; |
| 568 | |
| 569 | Cleanup: |
| 570 | ret = -1; |
| 571 | |
| 572 | if (gHvContext.GuestId == HV_LINUX_GUEST_ID) |
| 573 | { |
| 574 | if (gHvContext.synICEventPage[0]) |
| 575 | { |
Greg Kroah-Hartman | bfc30aae | 2009-07-29 15:40:18 -0700 | [diff] [blame] | 576 | osd_PageFree(gHvContext.synICEventPage[0],1); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 577 | } |
| 578 | |
| 579 | if (gHvContext.synICMessagePage[0]) |
| 580 | { |
Greg Kroah-Hartman | bfc30aae | 2009-07-29 15:40:18 -0700 | [diff] [blame] | 581 | osd_PageFree(gHvContext.synICMessagePage[0], 1); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 582 | } |
| 583 | } |
| 584 | |
| 585 | DPRINT_EXIT(VMBUS); |
| 586 | |
| 587 | return ret; |
| 588 | |
| 589 | } |
| 590 | |
| 591 | /*++ |
| 592 | |
| 593 | Name: |
| 594 | HvSynicCleanup() |
| 595 | |
| 596 | Description: |
| 597 | Cleanup routine for HvSynicInit(). |
| 598 | |
| 599 | --*/ |
Greg Kroah-Hartman | 98d9fac | 2009-08-17 17:20:55 -0700 | [diff] [blame] | 600 | void HvSynicCleanup(void) |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 601 | { |
| 602 | HV_SYNIC_SINT sharedSint; |
| 603 | HV_SYNIC_SIMP simp; |
| 604 | HV_SYNIC_SIEFP siefp; |
| 605 | |
| 606 | DPRINT_ENTER(VMBUS); |
| 607 | |
| 608 | if (!gHvContext.SynICInitialized) |
| 609 | { |
| 610 | DPRINT_EXIT(VMBUS); |
| 611 | return; |
| 612 | } |
| 613 | |
Greg Kroah-Hartman | a51ed7d | 2009-08-17 17:20:02 -0700 | [diff] [blame] | 614 | rdmsrl(HV_X64_MSR_SINT0 + VMBUS_MESSAGE_SINT, sharedSint.AsUINT64); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 615 | |
| 616 | sharedSint.Masked = 1; |
| 617 | |
Bill Pemberton | 454f18a | 2009-07-27 16:47:24 -0400 | [diff] [blame] | 618 | /* Disable the interrupt */ |
Greg Kroah-Hartman | a51ed7d | 2009-08-17 17:20:02 -0700 | [diff] [blame] | 619 | wrmsrl(HV_X64_MSR_SINT0 + VMBUS_MESSAGE_SINT, sharedSint.AsUINT64); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 620 | |
Bill Pemberton | 454f18a | 2009-07-27 16:47:24 -0400 | [diff] [blame] | 621 | /* |
| 622 | * Disable and free the resources only if we are running as |
| 623 | * native linux since in xenlinux, we are sharing the |
| 624 | * resources with the x2v shim |
| 625 | */ |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 626 | if (gHvContext.GuestId == HV_LINUX_GUEST_ID) |
| 627 | { |
Greg Kroah-Hartman | a51ed7d | 2009-08-17 17:20:02 -0700 | [diff] [blame] | 628 | rdmsrl(HV_X64_MSR_SIMP, simp.AsUINT64); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 629 | simp.SimpEnabled = 0; |
| 630 | simp.BaseSimpGpa = 0; |
| 631 | |
Greg Kroah-Hartman | a51ed7d | 2009-08-17 17:20:02 -0700 | [diff] [blame] | 632 | wrmsrl(HV_X64_MSR_SIMP, simp.AsUINT64); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 633 | |
Greg Kroah-Hartman | a51ed7d | 2009-08-17 17:20:02 -0700 | [diff] [blame] | 634 | rdmsrl(HV_X64_MSR_SIEFP, siefp.AsUINT64); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 635 | siefp.SiefpEnabled = 0; |
| 636 | siefp.BaseSiefpGpa = 0; |
| 637 | |
Greg Kroah-Hartman | a51ed7d | 2009-08-17 17:20:02 -0700 | [diff] [blame] | 638 | wrmsrl(HV_X64_MSR_SIEFP, siefp.AsUINT64); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 639 | |
Greg Kroah-Hartman | bfc30aae | 2009-07-29 15:40:18 -0700 | [diff] [blame] | 640 | osd_PageFree(gHvContext.synICMessagePage[0], 1); |
| 641 | osd_PageFree(gHvContext.synICEventPage[0], 1); |
Hank Janssen | 3e7ee49 | 2009-07-13 16:02:34 -0700 | [diff] [blame] | 642 | } |
| 643 | |
| 644 | DPRINT_EXIT(VMBUS); |
| 645 | } |
| 646 | |
| 647 | |
Bill Pemberton | 454f18a | 2009-07-27 16:47:24 -0400 | [diff] [blame] | 648 | /* eof */ |