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hyperv/vmbus: Expose Hyper-V major version.

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MFC after:	3 days
Sponsored by:	Microsoft
This commit is contained in:
Sepherosa Ziehau 2017-10-10 08:23:19 +00:00
parent 8dc07838db
commit 6bf331af5d
2 changed files with 5 additions and 1 deletions
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1
sys/dev/hyperv/include/hyperv.h
View file

@ -90,6 +90,7 @@ int hyperv_guid2str(const struct hyperv_guid *, char *,
*/
extern hyperv_tc64_t hyperv_tc64;
extern u_int hyperv_features; /* CPUID_HV_MSR_ */
extern u_int hyperv_ver_major;
#endif /* _KERNEL */

5
sys/dev/hyperv/vmbus/hyperv.c
View file

@ -77,6 +77,8 @@ static u_int hyperv_get_timecount(struct timecounter *);
static bool hyperv_identify(void);
static void hypercall_memfree(void);
u_int hyperv_ver_major;
u_int hyperv_features;
u_int hyperv_recommends;
@ -169,8 +171,9 @@ hyperv_identify(void)
hyperv_features3 = regs[3];
do_cpuid(CPUID_LEAF_HV_IDENTITY, regs);
hyperv_ver_major = regs[1] >> 16;
printf("Hyper-V Version: %d.%d.%d [SP%d]\n",
regs[1] >> 16, regs[1] & 0xffff, regs[0], regs[2]);
hyperv_ver_major, regs[1] & 0xffff, regs[0], regs[2]);
printf(" Features=0x%b\n", hyperv_features,
"\020"