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opnsense-src/sys/mips/include
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Jonathan T. Looney beb2406556 amd64: Protect the kernel text, data, and BSS by setting the RW/NX bits 
correctly for the data contained on each memory page.

There are several components to this change:
 * Add a variable to indicate the start of the R/W portion of the
   initial memory.
 * Stop detecting NX bit support for each AP.  Instead, use the value
   from the BSP and, if supported, activate the feature on the other
   APs just before loading the correct page table.  (Functionally, we
   already assume that the BSP and all APs had the same support or
   lack of support for the NX bit.)
 * Set the RW and NX bits correctly for the kernel text, data, and
   BSS (subject to some caveats below).
 * Ensure DDB can write to memory when necessary (such as to set a
   breakpoint).
 * Ensure GDB can write to memory when necessary (such as to set a
   breakpoint).  For this purpose, add new MD functions gdb_begin_write()
   and gdb_end_write() which the GDB support code can call before and
   after writing to memory.

This change is not comprehensive:
 * It doesn't do anything to protect modules.
 * It doesn't do anything for kernel memory allocated after the kernel
   starts running.
 * In order to avoid excessive memory inefficiency, it may let multiple
   types of data share a 2M page, and assigns the most permissions
   needed for data on that page.

Reviewed by:	jhb, kib
Discussed with:	emaste
MFC after:	2 weeks
Sponsored by:	Netflix
Differential Revision:	https://reviews.freebsd.org/D14282
2018-03-06 14:28:37 +00:00
..
_align.h sys: further adoption of SPDX licensing ID tags. 2017-11-20 19:43:44 +00:00
_bus.h sys/mips: further adoption of SPDX licensing ID tags. 2017-11-27 15:07:26 +00:00
_inttypes.h sys/mips: further adoption of SPDX licensing ID tags. 2017-11-27 15:07:26 +00:00
_limits.h sys: further adoption of SPDX licensing ID tags. 2017-11-20 19:43:44 +00:00
_stdint.h sys/mips: further adoption of SPDX licensing ID tags. 2017-11-27 15:07:26 +00:00
_types.h Do not include float interfaces when using libsa. 2018-02-23 04:04:25 +00:00
abi.h Consistently use 16-byte alignment for MIPS N32 and N64. 2018-01-31 17:36:39 +00:00
asm.h Consistently use 16-byte alignment for MIPS N32 and N64. 2018-01-31 17:36:39 +00:00
atomic.h Remove mips MD atomic_load_64 and atomic_store_64. 2017-12-22 23:27:03 +00:00
bootinfo.h sys/mips: further adoption of SPDX licensing ID tags. 2017-11-27 15:07:26 +00:00
bus.h sys/mips: further adoption of SPDX licensing ID tags. 2017-11-27 15:07:26 +00:00
bus_dma.h sys/mips: further adoption of SPDX licensing ID tags. 2017-11-27 15:07:26 +00:00
cache.h sys/mips: further adoption of SPDX licensing ID tags. 2017-11-27 15:07:26 +00:00
cache_mipsNN.h sys/mips: further adoption of SPDX licensing ID tags. 2017-11-27 15:07:26 +00:00
cache_r4k.h sys/mips: further adoption of SPDX licensing ID tags. 2017-11-27 15:07:26 +00:00
cdefs.h SPDX: Consider code from Carnegie-Mellon University. 2017-11-30 15:48:35 +00:00
clock.h Garbage collect unused prototype for clockintr(). 2016-05-20 15:34:03 +00:00
counter.h sys/mips: further adoption of SPDX licensing ID tags. 2017-11-27 15:07:26 +00:00
cpu.h sys: further adoption of SPDX licensing ID tags. 2017-11-20 19:43:44 +00:00
cpufunc.h sys/mips: further adoption of SPDX licensing ID tags. 2017-11-27 15:07:26 +00:00
cpuinfo.h spdx: initial adoption of licensing ID tags. 2017-11-18 14:26:50 +00:00
cpuregs.h sys: further adoption of SPDX licensing ID tags. 2017-11-20 19:43:44 +00:00
db_machdep.h sys/mips: further adoption of SPDX licensing ID tags. 2017-11-27 15:07:26 +00:00
dump.h Factor out duplicated code from dumpsys() on each architecture into generic 2015-01-07 01:01:39 +00:00
efi.h Fix building on i386 and arm. But 'public domain' headers on the files 2016-10-13 06:56:23 +00:00
elf.h sys/mips: further adoption of SPDX licensing ID tags. 2017-11-27 15:07:26 +00:00
endian.h sys: further adoption of SPDX licensing ID tags. 2017-11-20 19:43:44 +00:00
exec.h sys: further adoption of SPDX licensing ID tags. 2017-11-20 19:43:44 +00:00
fdt.h sys/mips: further adoption of SPDX licensing ID tags. 2017-11-27 15:07:26 +00:00
float.h sys: further adoption of SPDX licensing ID tags. 2017-11-20 19:43:44 +00:00
floatingpoint.h spdx: initial adoption of licensing ID tags. 2017-11-18 14:26:50 +00:00
fls64.h sys: further adoption of SPDX licensing ID tags. 2017-11-20 19:43:44 +00:00
fpu.h It appears that none of the contents of this file are necessary, so 2009-02-15 20:05:13 +00:00
frame.h sys/mips: further adoption of SPDX licensing ID tags. 2017-11-27 15:07:26 +00:00
gdb_machdep.h amd64: Protect the kernel text, data, and BSS by setting the RW/NX bits 2018-03-06 14:28:37 +00:00
hwfunc.h sys/mips: further adoption of SPDX licensing ID tags. 2017-11-27 15:07:26 +00:00
ieee.h sys: further adoption of SPDX licensing ID tags. 2017-11-20 19:43:44 +00:00
ieeefp.h People porting FreeBSD to new architectures ought not have to 2011-10-21 06:41:46 +00:00
in_cksum.h sys: further adoption of SPDX licensing ID tags. 2017-11-20 19:43:44 +00:00
intr.h bhnd(4): implement MIPS and PCI(e) interrupt support 2017-11-21 23:15:20 +00:00
intr_machdep.h sys/mips: further adoption of SPDX licensing ID tags. 2017-11-27 15:07:26 +00:00
kdb.h sys/mips: further adoption of SPDX licensing ID tags. 2017-11-27 15:07:26 +00:00
limits.h sys: further adoption of SPDX licensing ID tags. 2017-11-20 19:43:44 +00:00
locore.h Identify Ingenic CPUs. 2016-11-19 15:10:10 +00:00
md_var.h sys: further adoption of SPDX licensing ID tags. 2017-11-20 19:43:44 +00:00
memdev.h sys/mips: further adoption of SPDX licensing ID tags. 2017-11-27 15:07:26 +00:00
metadata.h sys/mips: further adoption of SPDX licensing ID tags. 2017-11-27 15:07:26 +00:00
minidump.h sys/mips: further adoption of SPDX licensing ID tags. 2017-11-27 15:07:26 +00:00
mips_opcode.h sys: further adoption of SPDX licensing ID tags. 2017-11-20 19:43:44 +00:00
octeon_cop2.h sys/mips: further adoption of SPDX licensing ID tags. 2017-11-27 15:07:26 +00:00
ofw_machdep.h sys/mips: further adoption of SPDX licensing ID tags. 2017-11-27 15:07:26 +00:00
param.h sys: further adoption of SPDX licensing ID tags. 2017-11-20 19:43:44 +00:00
pcb.h sys: further adoption of SPDX licensing ID tags. 2017-11-20 19:43:44 +00:00
pcpu.h sys/mips: further adoption of SPDX licensing ID tags. 2017-11-27 15:07:26 +00:00
pmap.h sys: further adoption of SPDX licensing ID tags. 2017-11-20 19:43:44 +00:00
pmc_mdep.h Add software PMC support. 2012-03-28 20:58:30 +00:00
proc.h sys: further adoption of SPDX licensing ID tags. 2017-11-20 19:43:44 +00:00
profile.h sys: further adoption of SPDX licensing ID tags. 2017-11-20 19:43:44 +00:00
pte.h sys/mips: further adoption of SPDX licensing ID tags. 2017-11-27 15:07:26 +00:00
ptrace.h sys: further adoption of SPDX licensing ID tags. 2017-11-20 19:43:44 +00:00
reg.h sys: further adoption of SPDX licensing ID tags. 2017-11-20 19:43:44 +00:00
regdef.h sys: further adoption of SPDX licensing ID tags. 2017-11-20 19:43:44 +00:00
regnum.h sys: further adoption of SPDX licensing ID tags. 2017-11-20 19:43:44 +00:00
reloc.h spdx: initial adoption of licensing ID tags. 2017-11-18 14:26:50 +00:00
resource.h Define PCI_RES_BUS for MIPS. 2016-04-12 07:18:48 +00:00
runq.h sys/mips: further adoption of SPDX licensing ID tags. 2017-11-27 15:07:26 +00:00
sc_machdep.h sys/mips: further adoption of SPDX licensing ID tags. 2017-11-27 15:07:26 +00:00
setjmp.h SPDX: Consider code from Carnegie-Mellon University. 2017-11-30 15:48:35 +00:00
sf_buf.h sys/mips: further adoption of SPDX licensing ID tags. 2017-11-27 15:07:26 +00:00
sigframe.h sys/mips: further adoption of SPDX licensing ID tags. 2017-11-27 15:07:26 +00:00
signal.h sys: further adoption of SPDX licensing ID tags. 2017-11-20 19:43:44 +00:00
smp.h Rename ARM_INTRNG and MIPS_INTRNG to INTRNG. This will help with machine 2016-04-15 16:05:41 +00:00
stdarg.h Use standard pattern for stdargs.h 2018-02-12 14:48:05 +00:00
sysarch.h sys: further adoption of SPDX licensing ID tags. 2017-11-20 19:43:44 +00:00
tlb.h sys/mips: further adoption of SPDX licensing ID tags. 2017-11-27 15:07:26 +00:00
tls.h sys/mips: further adoption of SPDX licensing ID tags. 2017-11-27 15:07:26 +00:00
trap.h sys: further adoption of SPDX licensing ID tags. 2017-11-20 19:43:44 +00:00
ucontext.h sys: further adoption of SPDX licensing ID tags. 2017-11-20 19:43:44 +00:00
vdso.h sys/mips: further adoption of SPDX licensing ID tags. 2017-11-27 15:07:26 +00:00
vm.h sys/mips: further adoption of SPDX licensing ID tags. 2017-11-27 15:07:26 +00:00
vmparam.h Remove SFBUF_OPTIONAL_DIRECT_MAP and such hacks, replacing them across the 2018-01-19 17:46:31 +00:00