Date: Thu, 26 May 2016 03:50:52 +0000 (UTC) From: Sepherosa Ziehau <sephe@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r300708 - head/sys/dev/hyperv/vmbus Message-ID: <201605260350.u4Q3oqAg037266@repo.freebsd.org>
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Author: sephe Date: Thu May 26 03:50:52 2016 New Revision: 300708 URL: https://svnweb.freebsd.org/changeset/base/300708 Log: hyperv: Rework guest id settings according to Hyper-V spec MFC after: 1 week Sponsored by: Microsoft OSTC Differential Revision: https://reviews.freebsd.org/D6553 Modified: head/sys/dev/hyperv/vmbus/hv_hv.c head/sys/dev/hyperv/vmbus/hyperv_reg.h Modified: head/sys/dev/hyperv/vmbus/hv_hv.c ============================================================================== --- head/sys/dev/hyperv/vmbus/hv_hv.c Thu May 26 02:55:41 2016 (r300707) +++ head/sys/dev/hyperv/vmbus/hv_hv.c Thu May 26 03:50:52 2016 (r300708) @@ -52,34 +52,24 @@ __FBSDID("$FreeBSD$"); #define HYPERV_INTERFACE 0x31237648 /* HV#1 */ -/* - * The guest OS needs to register the guest ID with the hypervisor. - * The guest ID is a 64 bit entity and the structure of this ID is - * specified in the Hyper-V specification: - * - * http://msdn.microsoft.com/en-us/library/windows/ - * hardware/ff542653%28v=vs.85%29.aspx - * - * While the current guideline does not specify how FreeBSD guest ID(s) - * need to be generated, our plan is to publish the guidelines for - * FreeBSD and other guest operating systems that currently are hosted - * on Hyper-V. The implementation here conforms to this yet - * unpublished guidelines. - * - * Bit(s) - * 63 - Indicates if the OS is Open Source or not; 1 is Open Source - * 62:56 - Os Type: FreeBSD is 0x02 - * 55:48 - Distro specific identification - * 47:16 - FreeBSD kernel version number - * 15:0 - Distro specific identification - */ -#define HYPERV_GUESTID_OSS (0x1ULL << 63) -#define HYPERV_GUESTID_FREEBSD (0x02ULL << 56) -#define HYPERV_GUESTID(id) \ - (HYPERV_GUESTID_OSS | HYPERV_GUESTID_FREEBSD | \ - (((uint64_t)(((id) & 0xff0000) >> 16)) << 48) |\ - (((uint64_t)__FreeBSD_version) << 16) | \ - ((uint64_t)((id) & 0x00ffff))) +#define HYPERV_FREEBSD_BUILD 0ULL +#define HYPERV_FREEBSD_VERSION ((uint64_t)__FreeBSD_version) +#define HYPERV_FREEBSD_OSID 0ULL + +#define MSR_HV_GUESTID_BUILD_FREEBSD \ + (HYPERV_FREEBSD_BUILD & MSR_HV_GUESTID_BUILD_MASK) +#define MSR_HV_GUESTID_VERSION_FREEBSD \ + ((HYPERV_FREEBSD_VERSION << MSR_HV_GUESTID_VERSION_SHIFT) & \ + MSR_HV_GUESTID_VERSION_MASK) +#define MSR_HV_GUESTID_OSID_FREEBSD \ + ((HYPERV_FREEBSD_OSID << MSR_HV_GUESTID_OSID_SHIFT) & \ + MSR_HV_GUESTID_OSID_MASK) + +#define MSR_HV_GUESTID_FREEBSD \ + (MSR_HV_GUESTID_BUILD_FREEBSD | \ + MSR_HV_GUESTID_VERSION_FREEBSD | \ + MSR_HV_GUESTID_OSID_FREEBSD | \ + MSR_HV_GUESTID_OSTYPE_FREEBSD) struct hypercall_ctx { void *hc_addr; @@ -321,8 +311,8 @@ hyperv_init(void *dummy __unused) return; } - /* Write guest id */ - wrmsr(HV_X64_MSR_GUEST_OS_ID, HYPERV_GUESTID(0)); + /* Set guest id */ + wrmsr(MSR_HV_GUEST_OS_ID, MSR_HV_GUESTID_FREEBSD); if (hyperv_features & HV_FEATURE_MSR_TIME_REFCNT) { /* Register virtual timecount */ Modified: head/sys/dev/hyperv/vmbus/hyperv_reg.h ============================================================================== --- head/sys/dev/hyperv/vmbus/hyperv_reg.h Thu May 26 02:55:41 2016 (r300707) +++ head/sys/dev/hyperv/vmbus/hyperv_reg.h Thu May 26 03:50:52 2016 (r300708) @@ -29,6 +29,20 @@ #ifndef _HYPERV_REG_H_ #define _HYPERV_REG_H_ +#define MSR_HV_GUEST_OS_ID 0x40000000 +#define MSR_HV_GUESTID_BUILD_MASK 0xffffULL +#define MSR_HV_GUESTID_VERSION_MASK 0x0000ffffffff0000ULL +#define MSR_HV_GUESTID_VERSION_SHIFT 16 +#define MSR_HV_GUESTID_OSID_MASK 0x00ff000000000000ULL +#define MSR_HV_GUESTID_OSID_SHIFT 48 +#define MSR_HV_GUESTID_OSTYPE_MASK 0x7f00000000000000ULL +#define MSR_HV_GUESTID_OSTYPE_SHIFT 56 +#define MSR_HV_GUESTID_OPENSRC 0x8000000000000000ULL +#define MSR_HV_GUESTID_OSTYPE_LINUX \ + ((0x01ULL << MSR_HV_GUESTID_OSTYPE_SHIFT) | MSR_HV_GUESTID_OPENSRC) +#define MSR_HV_GUESTID_OSTYPE_FREEBSD \ + ((0x02ULL << MSR_HV_GUESTID_OSTYPE_SHIFT) | MSR_HV_GUESTID_OPENSRC) + #define MSR_HV_HYPERCALL 0x40000001 #define MSR_HV_HYPERCALL_ENABLE 0x0001ULL #define MSR_HV_HYPERCALL_RSVD_MASK 0x0ffeULL
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