2cb0e95f48
Add minimal support for creating stage 2 IPA -> PA mappings. For this we need to: - Create a new vmid set to allocate a vmid for each Virtual Machine - Add the missing stage 2 attributes - Use these in pmap_enter to create a new mapping - Handle stage 2 faults The vmid set is based on the current asid set that was generalised in r358328. It adds a function pointer for bhyve to use when the kernel needs to reset the vmid set. This will need to call into EL2 and invalidate the TLB. The stage 2 attributes have been added. To simplify setting these fields two new functions are added to get the memory type and protection fields. These are slightly different on stage 1 and stage 2 tables. We then use them in pmap_enter to set the new level 3 entry to be stored. The D-cache on all entries is cleaned to the point of coherency. This is to allow the data to be visible to the VM. To allow for userspace to load code when creating a new executable entry an invalid entry is created. When the VM tried to use it the I-cache is invalidated. As the D-cache has already been cleaned this will ensure the I-cache is synchronised with the D-cache. When the hardware implements a VPIPT I-cache we need to either have the correct VMID set or invalidate it from EL2. As the host kernel will have the wrong VMID set we need to call into EL2 to clean it. For this a second function pointer is added that is called when this invalidation is needed. Sponsored by: Innovate UK Differential Revision: https://reviews.freebsd.org/D23875
87 lines
2.6 KiB
C
87 lines
2.6 KiB
C
/*-
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* Copyright (c) 1999 Luoqi Chen <luoqi@freebsd.org>
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* All rights reserved.
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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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* from: FreeBSD: src/sys/i386/include/globaldata.h,v 1.27 2001/04/27
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* $FreeBSD$
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*/
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#ifndef _MACHINE_PCPU_H_
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#define _MACHINE_PCPU_H_
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#include <machine/cpu.h>
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#include <machine/cpufunc.h>
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#define ALT_STACK_SIZE 128
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typedef int (*pcpu_bp_harden)(void);
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typedef int (*pcpu_ssbd)(int);
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struct debug_monitor_state;
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#define PCPU_MD_FIELDS \
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u_int pc_acpi_id; /* ACPI CPU id */ \
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u_int pc_midr; /* stored MIDR value */ \
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uint64_t pc_clock; \
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pcpu_bp_harden pc_bp_harden; \
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pcpu_ssbd pc_ssbd; \
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struct pmap *pc_curpmap; \
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struct pmap *pc_curvmpmap; \
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u_int pc_bcast_tlbi_workaround; \
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char __pad[205]
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#ifdef _KERNEL
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struct pcb;
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struct pcpu;
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static inline struct pcpu *
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get_pcpu(void)
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{
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struct pcpu *pcpu;
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__asm __volatile("mov %0, x18" : "=&r"(pcpu));
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return (pcpu);
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}
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static inline struct thread *
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get_curthread(void)
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{
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struct thread *td;
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__asm __volatile("ldr %0, [x18]" : "=&r"(td));
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return (td);
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}
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#define curthread get_curthread()
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#define PCPU_GET(member) (get_pcpu()->pc_ ## member)
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#define PCPU_ADD(member, value) (get_pcpu()->pc_ ## member += (value))
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#define PCPU_INC(member) PCPU_ADD(member, 1)
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#define PCPU_PTR(member) (&get_pcpu()->pc_ ## member)
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#define PCPU_SET(member,value) (get_pcpu()->pc_ ## member = (value))
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#endif /* _KERNEL */
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#endif /* !_MACHINE_PCPU_H_ */
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