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| author | Patrick Mooney <pmooney@pfmooney.com> | 2022-04-26 22:17:57 +0000 |
|---|---|---|
| committer | Patrick Mooney <pmooney@oxide.computer> | 2022-05-02 21:35:55 +0000 |
| commit | 3466010b6f73e5cbeb612e538494c9d42c6d4a68 (patch) | |
| tree | f8e7fc9ec946d74e49c8f6938bd8728918d6489e /usr/src/uts/intel/sys | |
| parent | 2a22bccab8733d6de38ab1e1fbe8c810122a4427 (diff) | |
| download | illumos-gate-3466010b6f73e5cbeb612e538494c9d42c6d4a68.tar.gz | |
14660 expose bhyve kernel interface version
Reviewed by: Andy Fiddaman <andy@omnios.org>
Reviewed by: Toomas Soome <tsoome@me.com>
Approved by: Richard Lowe <richlowe@richlowe.net>
Diffstat (limited to 'usr/src/uts/intel/sys')
| -rw-r--r-- | usr/src/uts/intel/sys/vmm_dev.h | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/usr/src/uts/intel/sys/vmm_dev.h b/usr/src/uts/intel/sys/vmm_dev.h index 027a7da214..0e883f21bb 100644 --- a/usr/src/uts/intel/sys/vmm_dev.h +++ b/usr/src/uts/intel/sys/vmm_dev.h @@ -350,6 +350,24 @@ struct vmm_dirty_tracker { void *vdt_pfns; /* bit vector of dirty bits */ }; +/* + * VMM Interface Version + * + * Despite the fact that the kernel interface to bhyve is explicitly considered + * Private, there are out-of-gate consumers which utilize it. While they assume + * the risk of any breakage incurred by changes to bhyve, we can at least try to + * make it easier to detect changes by exposing a "version" of the interface. + * It can also be used by the in-gate userland to detect if packaging updates + * somehow result in the userland and kernel falling out of sync. + * + * There are no established criteria for the magnitude of change which requires + * this version to be incremented, and maintenance of it is considered a + * best-effort activity. Nothing is to be inferred about the magnitude of a + * change when the version is modified. It follows no rules like semver. + */ +#define VMM_CURRENT_INTERFACE_VERSION 1 + + #define VMMCTL_IOC_BASE (('V' << 16) | ('M' << 8)) #define VMM_IOC_BASE (('v' << 16) | ('m' << 8)) #define VMM_LOCK_IOC_BASE (('v' << 16) | ('l' << 8)) @@ -359,6 +377,7 @@ struct vmm_dirty_tracker { #define VMM_CREATE_VM (VMMCTL_IOC_BASE | 0x01) #define VMM_DESTROY_VM (VMMCTL_IOC_BASE | 0x02) #define VMM_VM_SUPPORTED (VMMCTL_IOC_BASE | 0x03) +#define VMM_INTERFACE_VERSION (VMMCTL_IOC_BASE | 0x04) #define VMM_RESV_QUERY (VMMCTL_IOC_BASE | 0x10) #define VMM_RESV_ADD (VMMCTL_IOC_BASE | 0x11) |