e44af46e4c
IPI implmementations. Submitted by: Roger Pau Monné Sponsored by: Citrix Systems R&D Submitted by: gibbs (misc cleanup, table driven config) Reviewed by: gibbs MFC after: 2 weeks sys/amd64/include/cpufunc.h: sys/amd64/amd64/pmap.c: Move invltlb_globpcid() into cpufunc.h so that it can be used by the Xen HVM version of tlb shootdown IPI handlers. sys/x86/xen/xen_intr.c: sys/xen/xen_intr.h: Rename xen_intr_bind_ipi() to xen_intr_alloc_and_bind_ipi(), and remove the ipi vector parameter. This api allocates an event channel port that can be used for ipi services, but knows nothing of the actual ipi for which that port will be used. Removing the unused argument and cleaning up the comments surrounding its declaration helps clarify its actual role. sys/amd64/amd64/mp_machdep.c: sys/amd64/include/cpu.h: sys/i386/i386/mp_machdep.c: sys/i386/include/cpu.h: Implement a generic framework for amd64 and i386 that allows the implementation of certain CPU management functions to be selected at runtime. Currently this is only used for the ipi send function, which we optimize for Xen when running on a Xen hypervisor, but can easily be expanded to support more operations. sys/x86/xen/hvm.c: Implement Xen PV IPI handlers and operations, replacing native send IPI. sys/amd64/include/pcpu.h: sys/i386/include/pcpu.h: sys/i386/include/smp.h: Remove NR_VIRQS and NR_IPIS from FreeBSD headers. NR_VIRQS is defined already for us in the xen interface files. NR_IPIS is only needed in one file per Xen platform and is easily inferred by the IPI vector table that is defined in those files. sys/i386/xen/mp_machdep.c: Restructure to more closely match the HVM implementation by performing table driven IPI setup.
90 lines
2.9 KiB
C
90 lines
2.9 KiB
C
/*-
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* Copyright (c) 1990 The Regents of the University of California.
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* All rights reserved.
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*
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* This code is derived from software contributed to Berkeley by
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* William Jolitz.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* from: @(#)cpu.h 5.4 (Berkeley) 5/9/91
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* $FreeBSD$
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*/
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#ifndef _MACHINE_CPU_H_
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#define _MACHINE_CPU_H_
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/*
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* Definitions unique to i386 cpu support.
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*/
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#include <machine/psl.h>
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#include <machine/frame.h>
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#include <machine/segments.h>
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#define cpu_exec(p) /* nothing */
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#define cpu_swapin(p) /* nothing */
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#define cpu_getstack(td) ((td)->td_frame->tf_esp)
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#define cpu_setstack(td, ap) ((td)->td_frame->tf_esp = (ap))
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#define cpu_spinwait() ia32_pause()
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#define TRAPF_USERMODE(framep) \
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((ISPL((framep)->tf_cs) == SEL_UPL) || ((framep)->tf_eflags & PSL_VM))
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#define TRAPF_PC(framep) ((framep)->tf_eip)
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#ifdef _KERNEL
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/*
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* Struct containing pointers to CPU management functions whose
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* implementation is run time selectable. Selection can be made,
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* for example, based on detection of a particular CPU variant or
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* hypervisor environment.
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*/
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struct cpu_ops {
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void (*ipi_vectored)(u_int, int);
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};
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extern struct cpu_ops cpu_ops;
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extern char btext[];
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extern char etext[];
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void cpu_halt(void);
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void cpu_reset(void);
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void fork_trampoline(void);
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void swi_vm(void *);
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/*
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* Return contents of in-cpu fast counter as a sort of "bogo-time"
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* for random-harvesting purposes.
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*/
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static __inline uint64_t
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get_cyclecount(void)
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{
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return (cpu_ticks());
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}
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#endif
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#endif /* !_MACHINE_CPU_H_ */
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