35c91b0c27
This reduces the overhead of TLB invalidations by ensuring that we only interrupt CPUs which are using the given pmap. Tracking is performed in pmap_activate(), which gets called during context switches: from cpu_throw(), if a thread is exiting or an AP is starting, or cpu_switch() for a regular context switch. For now, pmap_sync_icache() still must interrupt all CPUs. Reviewed by: kib (earlier version), jhb Sponsored by: The FreeBSD Foundation Differential Revision: https://reviews.freebsd.org/D18874
101 lines
4.0 KiB
C
101 lines
4.0 KiB
C
/*-
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* Copyright (c) 2015-2016 Ruslan Bukin <br@bsdpad.com>
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* All rights reserved.
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*
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* Portions of this software were developed by SRI International and the
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* University of Cambridge Computer Laboratory under DARPA/AFRL contract
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* FA8750-10-C-0237 ("CTSRD"), as part of the DARPA CRASH research programme.
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*
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* Portions of this software were developed by the University of Cambridge
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* Computer Laboratory as part of the CTSRD Project, with support from the
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* UK Higher Education Innovation Fund (HEIF).
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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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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/assym.h>
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#include <sys/proc.h>
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#include <sys/mbuf.h>
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#include <sys/vmmeter.h>
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#include <sys/bus.h>
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#include <vm/vm.h>
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#include <vm/vm_param.h>
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#include <vm/pmap.h>
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#include <vm/vm_map.h>
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#include <machine/riscvreg.h>
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#include <machine/frame.h>
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#include <machine/pcb.h>
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#include <machine/cpu.h>
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#include <machine/proc.h>
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#include <machine/cpufunc.h>
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#include <machine/pte.h>
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#include <machine/intr.h>
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ASSYM(KERNBASE, KERNBASE);
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ASSYM(VM_MAXUSER_ADDRESS, VM_MAXUSER_ADDRESS);
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ASSYM(VM_MAX_KERNEL_ADDRESS, VM_MAX_KERNEL_ADDRESS);
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ASSYM(TDF_ASTPENDING, TDF_ASTPENDING);
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ASSYM(TDF_NEEDRESCHED, TDF_NEEDRESCHED);
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ASSYM(PCB_ONFAULT, offsetof(struct pcb, pcb_onfault));
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ASSYM(PCB_SIZE, sizeof(struct pcb));
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ASSYM(PCB_RA, offsetof(struct pcb, pcb_ra));
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ASSYM(PCB_SP, offsetof(struct pcb, pcb_sp));
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ASSYM(PCB_GP, offsetof(struct pcb, pcb_gp));
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ASSYM(PCB_TP, offsetof(struct pcb, pcb_tp));
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ASSYM(PCB_T, offsetof(struct pcb, pcb_t));
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ASSYM(PCB_S, offsetof(struct pcb, pcb_s));
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ASSYM(PCB_A, offsetof(struct pcb, pcb_a));
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ASSYM(PCB_X, offsetof(struct pcb, pcb_x));
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ASSYM(PCB_FCSR, offsetof(struct pcb, pcb_fcsr));
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ASSYM(SF_UC, offsetof(struct sigframe, sf_uc));
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ASSYM(PC_CURPCB, offsetof(struct pcpu, pc_curpcb));
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ASSYM(PC_CURTHREAD, offsetof(struct pcpu, pc_curthread));
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ASSYM(TD_PCB, offsetof(struct thread, td_pcb));
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ASSYM(TD_FLAGS, offsetof(struct thread, td_flags));
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ASSYM(TD_PROC, offsetof(struct thread, td_proc));
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ASSYM(TD_FRAME, offsetof(struct thread, td_frame));
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ASSYM(TD_MD, offsetof(struct thread, td_md));
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ASSYM(TD_LOCK, offsetof(struct thread, td_lock));
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ASSYM(TF_SIZE, sizeof(struct trapframe));
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ASSYM(TF_RA, offsetof(struct trapframe, tf_ra));
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ASSYM(TF_SP, offsetof(struct trapframe, tf_sp));
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ASSYM(TF_GP, offsetof(struct trapframe, tf_gp));
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ASSYM(TF_TP, offsetof(struct trapframe, tf_tp));
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ASSYM(TF_T, offsetof(struct trapframe, tf_t));
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ASSYM(TF_S, offsetof(struct trapframe, tf_s));
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ASSYM(TF_A, offsetof(struct trapframe, tf_a));
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ASSYM(TF_SEPC, offsetof(struct trapframe, tf_sepc));
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ASSYM(TF_STVAL, offsetof(struct trapframe, tf_stval));
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ASSYM(TF_SCAUSE, offsetof(struct trapframe, tf_scause));
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ASSYM(TF_SSTATUS, offsetof(struct trapframe, tf_sstatus));
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