Differential D29498 Diff 104981 sys/arm64/include/xen/xen-os.h

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sys/arm64/include/xen/xen-os.h

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				/*
				* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
				*
				* Copyright (c) 2014 Julien Grall
				*
				* Redistribution and use in source and binary forms, with or without
				* modification, are permitted provided that the following conditions
				* are met:
				* 1. Redistributions of source code must retain the above copyright
				* notice, this list of conditions and the following disclaimer.
				* 2. Redistributions in binary form must reproduce the above copyright
				* notice, this list of conditions and the following disclaimer in the
				* documentation and/or other materials provided with the distribution.
				*
				* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
				* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
				* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
				* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
				* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
				* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
				* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
				* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
				* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
				* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
				* SUCH DAMAGE.
				*/

				#ifndef __MACHINE_ARM64_XEN_XEN_OS_H__
				#define __MACHINE_ARM64_XEN_XEN_OS_H__
				__FBSDID("$FreeBSD$");

				#ifndef _XEN_XEN_OS_H_
				#error "do not #include machine/xen/xen-os.h, #include xen/xen-os.h instead"
				#endif

				/* Xen/ARM requires write-back/cached, so this is the correct setting */
				#define VM_MEMATTR_XEN VM_MEMATTR_WRITE_BACK

				#ifndef __ASSEMBLY__

				#define XEN_CPUID_TO_VCPUID(cpu) (cpu)

				static inline bool
				xen_pv_shutdown_handler(void)
				{

				/* PV shutdown handler are always supported on ARM */
				return (true);
				}

				static inline bool
				xen_has_percpu_evtchn(void)
				{

				/* It's always possible to rebind event channel on ARM */
				return (true);
				ehem_freebsd_m5p.comAuthorUnsubmitted Done Inline Actions @julien_xen.org I'm in the middle of testing related to this. The code and comment disagree here. If it is always possible to rebind event channels on ARM, this should be returning true instead of false. Simply a goof during development and your project never got to the point of testing this? ehem_freebsd_m5p.com: @julien_xen.org I'm in the middle of testing related to this. The code and comment disagree…
				}

				static inline bool
				xen_pv_disks_disabled(void)
				{

				/* It's not possible to disable PV disks on ARM */
				return (false);
				}

				static inline bool
				xen_pv_nics_disabled(void)
				{

				/* It's not possible to disable PV nics on ARM */
				return (false);
				}

				#endif

				#endif /* __MACHINE_ARM64_XEN_XEN_OS__ */