Author: sephe
Date: Mon Apr 11 03:14:28 2016
New Revision: 297801
URL: https://svnweb.freebsd.org/changeset/base/297801
Log:
hyperv/vmbus: Get rid of max_leaf detection; this is actually not used.
It will be replaced by a new one.
MFC after: 1 week
Sponsored by: Microsoft OSTC
Modified:
head/sys/dev/hyperv/vmbus/hv_hv.c
Modified: head/sys/dev/hyperv/vmbus/hv_hv.c
==============================================================================
--- head/sys/dev/hyperv/vmbus/hv_hv.c Mon Apr 11 03:07:35 2016
(r297800)
+++ head/sys/dev/hyperv/vmbus/hv_hv.c Mon Apr 11 03:14:28 2016
(r297801)
@@ -70,35 +70,6 @@ hv_get_timecount(struct timecounter *tc)
}
/**
- * @brief Get version of the windows hypervisor
- */
-static int
-hv_vmbus_get_hypervisor_version(void)
-{
- u_int regs[4];
- unsigned int maxLeaf;
- unsigned int op;
-
- /*
- * Its assumed that this is called after confirming that
- * Viridian is present
- * Query id and revision.
- */
- op = HV_CPU_ID_FUNCTION_HV_VENDOR_AND_MAX_FUNCTION;
- do_cpuid(op, regs);
-
- maxLeaf = regs[0];
- op = HV_CPU_ID_FUNCTION_HV_INTERFACE;
- do_cpuid(op, regs);
-
- if (maxLeaf >= HV_CPU_ID_FUNCTION_MS_HV_VERSION) {
- op = HV_CPU_ID_FUNCTION_MS_HV_VERSION;
- do_cpuid(op, regs);
- }
- return (maxLeaf);
-}
-
-/**
* @brief Invoke the specified hypercall
*/
static uint64_t
@@ -147,7 +118,6 @@ hv_vmbus_do_hypercall(uint64_t control,
int
hv_vmbus_init(void)
{
- int max_leaf;
hv_vmbus_x64_msr_hypercall_contents hypercall_msr;
void* virt_addr = 0;
@@ -164,8 +134,6 @@ hv_vmbus_init(void)
if (vm_guest != VM_GUEST_HV)
goto cleanup;
- max_leaf = hv_vmbus_get_hypervisor_version();
-
/*
* Write our OS info
*/
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