f6abce8e79
r357614 added CTLFLAG_NEEDGIANT to make it easier to find nodes that are still not MPSAFE (or already are but aren’t properly marked). Use it in preparation for a general review of all nodes. This is non-functional change that adds annotations to SYSCTL_NODE and SYSCTL_PROC nodes using one of the soon-to-be-required flags. Reviewed by: kib Approved by: kib (mentor) Differential Revision: https://reviews.freebsd.org/D23625 X-Generally looks fine: jhb
89 lines
2.4 KiB
C
89 lines
2.4 KiB
C
/*-
|
|
* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
|
|
*
|
|
* Copyright (c) 2013 Anish Gupta (akgupt3@gmail.com)
|
|
* All rights reserved.
|
|
*
|
|
* 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 unmodified, 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 ``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 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.
|
|
*/
|
|
|
|
#include <sys/cdefs.h>
|
|
__FBSDID("$FreeBSD$");
|
|
|
|
#include <sys/param.h>
|
|
#include <sys/kernel.h>
|
|
#include <sys/systm.h>
|
|
#include <sys/sysctl.h>
|
|
|
|
#include <vm/vm.h>
|
|
#include <vm/pmap.h>
|
|
#include <vm/vm_extern.h>
|
|
|
|
#include "npt.h"
|
|
|
|
SYSCTL_DECL(_hw_vmm);
|
|
SYSCTL_NODE(_hw_vmm, OID_AUTO, npt, CTLFLAG_RW | CTLFLAG_MPSAFE, NULL,
|
|
NULL);
|
|
|
|
static int npt_flags;
|
|
SYSCTL_INT(_hw_vmm_npt, OID_AUTO, pmap_flags, CTLFLAG_RD,
|
|
&npt_flags, 0, NULL);
|
|
|
|
#define NPT_IPIMASK 0xFF
|
|
|
|
/*
|
|
* AMD nested page table init.
|
|
*/
|
|
int
|
|
svm_npt_init(int ipinum)
|
|
{
|
|
int enable_superpage = 1;
|
|
|
|
npt_flags = ipinum & NPT_IPIMASK;
|
|
TUNABLE_INT_FETCH("hw.vmm.npt.enable_superpage", &enable_superpage);
|
|
if (enable_superpage)
|
|
npt_flags |= PMAP_PDE_SUPERPAGE;
|
|
|
|
return (0);
|
|
}
|
|
|
|
static int
|
|
npt_pinit(pmap_t pmap)
|
|
{
|
|
|
|
return (pmap_pinit_type(pmap, PT_RVI, npt_flags));
|
|
}
|
|
|
|
struct vmspace *
|
|
svm_npt_alloc(vm_offset_t min, vm_offset_t max)
|
|
{
|
|
|
|
return (vmspace_alloc(min, max, npt_pinit));
|
|
}
|
|
|
|
void
|
|
svm_npt_free(struct vmspace *vmspace)
|
|
{
|
|
|
|
vmspace_free(vmspace);
|
|
}
|