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opnsense-src/sys/arm64/include
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Andrew Turner ad020198ff Stop performing a full icache sync when the DIC and IDC flags are set 
The DIC and IDC bits in the CTR_EL0 register signal to the kernel when it
can relax the instruction cache synchronisation operations. The IDC bit
means we can relax cleaning the data cache to the point of unification
while the DIC bit means we don't need to invalidate the instruction cache
for data coherence. In both cases an appropriate barrier is still needed.

For now only implement the case where both bits are set, as is the case
on the Neoverse-N1 as used in the Amazon AWS Graviton 2 CPU. Note that
this behaviour is a optional on the N1 so we may later need to implement
only one or the other bit being set.

There is a tunable to disable each flag on boot.

Testing on a 4 core Graviton 2 instance found a significant improvement
in sys and real time when running "make buildkernel -j4", with no
significant difference in user time.

Reviewed by:	markj
Sponsored by:	Innovate UK
Differential Revision:	https://reviews.freebsd.org/D24853
2020-05-19 16:04:27 +00:00
..
_align.h
_bus.h Regularize my copyright notice 2019-12-04 16:56:11 +00:00
_inttypes.h
_limits.h
_stdint.h
_types.h Do not include float interfaces when using libsa. 2018-02-23 04:04:25 +00:00
acpica_machdep.h Add support to find the arm64 serial using the ACPI tables. This uses the 2016-11-21 19:26:58 +00:00
armreg.h Add more are64 special register fields 2020-03-06 16:00:35 +00:00
asm.h Stop speculation past an eret instruction 2019-12-19 08:52:16 +00:00
atomic.h Expand generic subword atomic primitives 2020-03-25 23:12:43 +00:00
bus.h Add genet driver for Raspberry Pi 4B Ethernet 2020-04-22 00:42:10 +00:00
bus_dma.h Allow loading the same DMA address multiple times without any prior 2019-05-16 17:41:16 +00:00
bus_dma_impl.h Allow loading the same DMA address multiple times without any prior 2019-05-16 17:41:16 +00:00
clock.h Bring in the start of the arm64 kernel. 2015-04-13 14:43:10 +00:00
counter.h Centralize __pcpu definitions. 2019-08-29 07:25:27 +00:00
cpu.h Move the arm64 cache identification to identcpu.c 2020-03-03 15:25:01 +00:00
cpufunc.h Stop performing a full icache sync when the DIC and IDC flags are set 2020-05-19 16:04:27 +00:00
csan.h Add kcsan_md_unsupported from NetBSD. 2019-11-21 13:22:23 +00:00
db_machdep.h Fix printing of negative offsets (typically from frame pointers) again. 2017-03-26 18:46:35 +00:00
debug_monitor.h Move the struct debug_monitor_state out of _KERNEL. 2019-11-03 22:17:49 +00:00
disassem.h Framework for ARM64 instruction disassembler 2016-01-29 13:06:30 +00:00
dump.h Bring in the start of the arm64 kernel. 2015-04-13 14:43:10 +00:00
efi.h Catch exceptions during EFI RT calls on amd64. 2018-09-02 21:37:05 +00:00
elf.h gcore: Add aarch64 32-bit core support 2019-10-11 14:15:50 +00:00
endian.h Add parentheses missed in r320388 2017-06-27 16:30:01 +00:00
exec.h
float.h Rationalize BSD license on sys/*/include/float.h 2015-08-05 17:05:35 +00:00
floatingpoint.h add floatingpoint.h for arm64 2015-06-24 14:51:53 +00:00
fpu.h Add machine/fpu.h on arm64 for compatibility with amd64. 2017-10-10 13:02:58 +00:00
frame.h Impleent COMPAT_FREEBSD32 for arm64. 2019-01-13 19:49:46 +00:00
hypervisor.h Update the hypervisor registers 2020-03-06 14:46:50 +00:00
ieeefp.h Fix the floating-point exception values to line up with the hardware 2015-06-24 12:19:49 +00:00
ifunc.h Remove resolver_qual from DEFINE_IFUNC/DEFINE_UIFUNC macros. 2019-05-16 22:20:54 +00:00
in_cksum.h Rationalize BSD license on sys/*/include/in_cksum.h 2015-08-05 19:05:12 +00:00
intr.h Create macros for the ACPI interrupt cross references. This is considered a 2018-03-07 13:16:03 +00:00
iodev.h Add basic support for ACPI. It splits out the nexus driver to two new 2015-06-11 15:45:33 +00:00
kdb.h Implement kdb_cpu_sync_icache on arm64. 2016-02-05 15:38:28 +00:00
machdep.h Mark the arm64 machdep.h as kernel only 2020-03-05 10:52:16 +00:00
md_var.h Implement userspace gettimeofday(2) with HPET timecounter. 2016-08-17 09:52:09 +00:00
memdev.h Add memmmap on arm64 so we can mmap /dev/mem and /dev/kmem. 2016-07-13 23:03:34 +00:00
metadata.h loader.efi: Make framebuffer commands available for arm64 2017-10-25 18:55:04 +00:00
minidump.h Add the arm64 minidump header. This was missed from r286953. 2015-08-20 11:26:26 +00:00
ofw_machdep.h Make using the #address-cells property on the interrupt parent in device 2016-01-02 19:28:35 +00:00
param.h Define MAXCPU consistently between the kernel and KLDs. 2020-02-05 19:08:21 +00:00
pcb.h Add support for setting hardware breakpoints from ptrace on arm64. 2019-11-03 15:42:08 +00:00
pci_cfgreg.h Implement stubs for ACPI PCI routines 2015-07-12 17:28:31 +00:00
pcpu.h Utilize ASIDs to reduce both the direct and indirect costs of context 2019-11-03 17:45:30 +00:00
pcpu_aux.h Centralize __pcpu definitions. 2019-08-29 07:25:27 +00:00
pmap.h Generalise the arm64 ASID allocator. 2020-02-26 11:50:24 +00:00
pmc_mdep.h Add Performance Monitoring Counters support for AArch64. 2015-05-19 15:25:47 +00:00
proc.h Utilize ASIDs to reduce both the direct and indirect costs of context 2019-11-03 17:45:30 +00:00
procctl.h amd64 KPTI: add control from procctl(2). 2019-03-16 11:44:33 +00:00
profile.h SPDX: Consider code from Carnegie-Mellon University. 2017-11-30 15:48:35 +00:00
psl.h Add support for arm64 to loader.efi and boot1.efi 2015-04-14 13:55:01 +00:00
pte.h Split out the stage 1 pte bits and add the stage 2 bits 2020-02-24 16:45:31 +00:00
ptrace.h Add more arm64 machine dependent headers. With this we now have the minimum 2015-03-26 21:10:42 +00:00
reg.h Add support for setting hardware breakpoints from ptrace on arm64. 2019-11-03 15:42:08 +00:00
reloc.h
resource.h Define PCI_RES_BUS for NEW_PCIB 2016-05-19 14:00:18 +00:00
runq.h
setjmp.h Move the stored signal mask later in the jump buf. It was being clobbered 2016-12-06 13:46:12 +00:00
sf_buf.h Bring in the start of the arm64 kernel. 2015-04-13 14:43:10 +00:00
sigframe.h Follow arm[32] and sparc64 KAPI and provide the FreeBSD standard spelling 2019-01-29 20:10:27 +00:00
signal.h
smp.h Rename COUNT_IPI to INTR_IPI_COUNT to reduce the diff with intrng. 2016-03-18 16:29:58 +00:00
stack.h Split out db_unwind_frame() so it can be used by DTrace. 2015-06-11 12:47:13 +00:00
stdarg.h Introduce an architecture-agnostic <sys/_stdarg.h> to reduce 2017-12-25 20:54:00 +00:00
sysarch.h Add more arm64 machine dependent headers. With this we now have the minimum 2015-03-26 21:10:42 +00:00
trap.h Bring in the start of the arm64 kernel. 2015-04-13 14:43:10 +00:00
ucontext.h Impleent COMPAT_FREEBSD32 for arm64. 2019-01-13 19:49:46 +00:00
undefined.h Allow the userspace ID register fields to be read from the kernel 2019-10-30 13:45:40 +00:00
vdso.h Add rudimentary support for building FreeBSD/arm64 with COMPAT_FREEBSD32. 2017-11-24 13:50:53 +00:00
vfp.h Impleent COMPAT_FREEBSD32 for arm64. 2019-01-13 19:49:46 +00:00
vm.h Add the VM_MEMATTR_WRITE_THROUGH memory type to arm64 and use it to support 2017-05-13 13:01:15 +00:00
vmparam.h Eliminate an unused declaration. The variable in question is only defined 2019-10-07 04:22:03 +00:00