1dc7ce99b0
It is not immediately clear what this option causes to become ignored. The actual meaning is that it is not necessary to unplug the emulated devices to safely use the PV ones, even if the platform does not support the unplug protocol. (pressumably the user will only add this option if they have ensured that their domain configuration is safe). I think xen_emul_unplug=unnecessary better captures this. Signed-off-by: Ian Campbell <ian.campbell@citrix.com> Acked-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com> Acked-by: Stefano Stabellini <Stefano.Stabellini@eu.citrix.com>
51 lines
1.5 KiB
C
51 lines
1.5 KiB
C
#ifndef _XEN_PLATFORM_PCI_H
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#define _XEN_PLATFORM_PCI_H
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#define XEN_IOPORT_MAGIC_VAL 0x49d2
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#define XEN_IOPORT_LINUX_PRODNUM 0x0003
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#define XEN_IOPORT_LINUX_DRVVER 0x0001
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#define XEN_IOPORT_BASE 0x10
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#define XEN_IOPORT_PLATFLAGS (XEN_IOPORT_BASE + 0) /* 1 byte access (R/W) */
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#define XEN_IOPORT_MAGIC (XEN_IOPORT_BASE + 0) /* 2 byte access (R) */
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#define XEN_IOPORT_UNPLUG (XEN_IOPORT_BASE + 0) /* 2 byte access (W) */
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#define XEN_IOPORT_DRVVER (XEN_IOPORT_BASE + 0) /* 4 byte access (W) */
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#define XEN_IOPORT_SYSLOG (XEN_IOPORT_BASE + 2) /* 1 byte access (W) */
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#define XEN_IOPORT_PROTOVER (XEN_IOPORT_BASE + 2) /* 1 byte access (R) */
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#define XEN_IOPORT_PRODNUM (XEN_IOPORT_BASE + 2) /* 2 byte access (W) */
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#define XEN_UNPLUG_ALL_IDE_DISKS 1
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#define XEN_UNPLUG_ALL_NICS 2
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#define XEN_UNPLUG_AUX_IDE_DISKS 4
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#define XEN_UNPLUG_ALL 7
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#define XEN_UNPLUG_UNNECESSARY 8
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#define XEN_UNPLUG_NEVER 16
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static inline int xen_must_unplug_nics(void) {
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#if (defined(CONFIG_XEN_NETDEV_FRONTEND) || \
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defined(CONFIG_XEN_NETDEV_FRONTEND_MODULE)) && \
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(defined(CONFIG_XEN_PLATFORM_PCI) || \
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defined(CONFIG_XEN_PLATFORM_PCI_MODULE))
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return 1;
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#else
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return 0;
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#endif
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}
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static inline int xen_must_unplug_disks(void) {
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#if (defined(CONFIG_XEN_BLKDEV_FRONTEND) || \
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defined(CONFIG_XEN_BLKDEV_FRONTEND_MODULE)) && \
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(defined(CONFIG_XEN_PLATFORM_PCI) || \
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defined(CONFIG_XEN_PLATFORM_PCI_MODULE))
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return 1;
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#else
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return 0;
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#endif
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}
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extern int xen_platform_pci_unplug;
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#endif /* _XEN_PLATFORM_PCI_H */
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