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A hypervisor or virtual machine monitor (VMM) is a computer software, firmware or hardware that creates and runs virtual machines.
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pci_sriov_get_totalvfs(9) [centos man page]

PCI_SRIOV_GET_TOTALV(9) 					Hardware Interfaces					   PCI_SRIOV_GET_TOTALV(9)

pci_sriov_get_totalvfs - - get total VFs supported on this device SYNOPSIS
int pci_sriov_get_totalvfs(struct pci_dev * dev); ARGUMENTS
dev the PCI PF device DESCRIPTION
For a PCIe device with SRIOV support, return the PCIe SRIOV capability value of TotalVFs or the value of driver_max_VFs if the driver reduced it. Otherwise 0. COPYRIGHT
Kernel Hackers Manual 3.10 June 2014 PCI_SRIOV_GET_TOTALV(9)

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ATH_HAL(4)						   BSD Kernel Interfaces Manual 						ATH_HAL(4)

ath_hal -- Atheros Hardware Access Layer (HAL) SYNOPSIS
device ath_hal options AH_SUPPORT_AR5416 or device ath_ar5210 device ath_ar5211 device ath_ar5212 device ath_rf2413 device ath_rf2417 device ath_rf2425 device ath_rf5111 device ath_rf5112 device ath_rf5413 device ath_ar5416 device ath_ar9130 device ath_ar9160 device ath_ar9280 device ath_ar9285 device ath_ar9287 device ath_ar9300 options AH_SUPPORT_AR5416 DESCRIPTION
The hal provides hardware support for wireless network adapters based on the Atheros AR5210, AR5211, AR5212, AR5213, AR2413, AR2417, AR2425, AR5413, AR5416, AR5418, AR5424, AR9160, AR9220, AR9280, AR9285, AR9287, AR9380, AR9390, AR9580, AR9590, AR9562 and QCA9565 chips (and compan- ion RF/baseband parts). This code is part of the ath(4) driver but configured separately to allow fine-grained control over the set of chips supported. Selecting ath_hal enables support for all PCI and Cardbus devices. Note this includes AR5416, AR5418, AR9130, AR9160, AR9220, AR9280, AR9285 and AR9287 devices and must be accompanied by the AH_SUPPORT_AR5416 option to enable the extended hardware descriptor format used by AR5416 and later devices. Some devices come in Cardbus/MiniPCI/PCI format. Others (for example AR2413, AR2427, AR5418, AR9280, AR9285, AR9287) come in PCIe, Mini-PCIe or ExpressCard format. Historically this code has been released in a binary-only form and packaged as a separate module. With the release of source code for the hal this is no longer true and the code is tightly integrated with the driver. HARDWARE
The following cards are among those supported by the ath_hal module: Card Chip Bus Standard Aztech WL830PC AR5212 CardBus b/g D-Link DWL-A650 AR5210 CardBus a D-Link DWL-AB650 AR5211 CardBus a/b D-Link DWL-A520 AR5210 PCI a D-Link DWL-AG520 AR5212 PCI a/b/g D-Link DWL-AG650 AR5212 CardBus a/b/g D-Link DWL-G520B AR5212 PCI b/g D-Link DWL-G650B AR5212 CardBus b/g Elecom LD-WL54AG AR5212 Cardbus a/b/g Elecom LD-WL54 AR5211 Cardbus a Fujitsu E5454 AR5212 Cardbus a/b/g Fujitsu FMV-JW481 AR5212 Cardbus a/b/g Fujitsu E5454 AR5212 Cardbus a/b/g HP NC4000 AR5212 PCI a/b/g I/O Data WN-AB AR5212 CardBus a/b I/O Data WN-AG AR5212 CardBus a/b/g I/O Data WN-A54 AR5212 CardBus a Linksys WMP55AG AR5212 PCI a/b/g Linksys WPC51AB AR5211 CardBus a/b Linksys WPC55AG AR5212 CardBus a/b/g NEC PA-WL/54AG AR5212 CardBus a/b/g Netgear WAG311 AR5212 PCI a/b/g Netgear WAB501 AR5211 CardBus a/b Netgear WAG511 AR5212 CardBus a/b/g Netgear WG311 (aka WG311v1) AR5212 PCI b/g Netgear WG311v2 AR5212 PCI b/g Netgear WG311T AR5212 PCI b/g Netgear WG511T AR5212 CardBus b/g Orinoco 8480 AR5212 CardBus a/b/g Orinoco 8470WD AR5212 CardBus a/b/g Proxim Skyline 4030 AR5210 CardBus a Proxim Skyline 4032 AR5210 PCI a Samsung SWL-5200N AR5212 CardBus a/b/g SMC SMC2735W AR5210 CardBus a Sony PCWA-C700 AR5212 Cardbus a/b Sony PCWA-C300S AR5212 Cardbus b/g Sony PCWA-C500 AR5210 Cardbus a 3Com 3CRPAG175 AR5212 CardBus a/b/g TP-LINK TL-WDN4800 AR9380 PCIe a/b/g/n SEE ALSO
ath(4) HISTORY
The ath_hal module first appeared in FreeBSD 5.2. BUGS
See ath(4) for known bugs. BSD
July 22, 2013 BSD

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