Konstantin Belousov 9c0b759bf9 x86 atomics: use lock prefix unconditionally ... Atomics have significant other use besides providing in-system primitives for safe memory updates. They are used for implementing communication with out of system software or hardware following some protocols. For instance, even UP kernel might require a protocol using atomics to communicate with the software-emulated device on SMP hypervisor. Or real hardware might need atomic accesses as part of the proper management protocol. Another point is that UP configurations on x86 are extinct, so slight performance hit by unconditionally use proper atomics is not important. It is compensated by less code clutter, which in fact improves the UP/i386 lifetime expectations. Requested by: Elliott Mitchell <ehem+freebsd@m5p.com> Reviewed by: Elliott Mitchell, imp, jhb, markj, royger Sponsored by: The FreeBSD Foundation MFC after: 1 week Differential revision: https://reviews.freebsd.org/D34153		2022-02-04 14:01:39 +02:00
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pc	smbios: Move smbios driver out from x86 machdep code	2021-02-23 21:17:09 +00:00
xen	xen/privcmd: implement the dm op ioctl	2021-01-11 16:33:27 +01:00
_align.h
_bus.h	Regularize my copyright notice	2019-12-04 16:56:11 +00:00
_inttypes.h
_limits.h
_stdint.h
_types.h
acpica_machdep.h
apm_bios.h
asan.h	amd64: Implement a KASAN shadow map	2021-04-13 17:42:20 -04:00
asm.h	amd64: Add CFI directives for libc syscall stubs	2019-10-23 19:03:03 +00:00
asmacros.h	amd64: Add MD bits for KMSAN	2021-08-10 21:27:53 -04:00
atomic.h	x86 atomics: use lock prefix unconditionally	2022-02-04 14:01:39 +02:00
bus_dma.h
bus.h
clock.h	x86: Deduplicate clock.h	2021-12-06 10:39:08 -05:00
counter.h	amd64: provide custom zpcpu set/add/sub routines	2020-02-12 11:15:33 +00:00
cpu.h	Simplify swi for bus_dma.	2021-12-28 13:51:25 -08:00
cpufunc.h	x86: cpufunc: Add rdtsc_ordered()	2021-08-14 15:57:53 +03:00
cputypes.h
csan.h	Limit when we call DELAY from KCSAN on amd64	2021-02-25 12:38:05 +00:00
db_machdep.h	Create sys/reg.h for the common code previously in machine/reg.h	2021-08-30 12:50:53 +01:00
dump.h
efi.h	Remove "All Rights Reserved" from FreeBSD Foundation sys/ copyrights	2021-08-08 10:42:24 -04:00
elf.h
endian.h
exec.h
fdt.h
float.h
floatingpoint.h
fpu.h	Add domain policy allocation for amd64 fpu_kern_ctx	2020-07-03 14:54:46 +00:00
frame.h	amd64: centralize definitions of CS_SECURE and EFL_SECURE	2021-09-21 20:20:14 +03:00
gdb_machdep.h	gdb: report specific stop reason for watchpoints	2021-03-30 11:36:41 -03:00
ieeefp.h	Merge common parts of i386 and amd64's ieeefp.h into x86/x86_ieeefp.h	2021-08-12 18:45:22 +08:00
in_cksum.h	netinet: Remove in_cksum_update()	2021-11-24 13:31:15 -05:00
intr_machdep.h	amd64: Make it easier to configure exception stack sizes	2020-11-04 16:42:20 +00:00
iodev.h
iommu.h	o Add machine/iommu.h and include MD iommu headers from it,	2020-08-05 19:11:31 +00:00
kdb.h	x86: implement kdb watchpoint functions	2021-03-29 12:05:43 -03:00
limits.h
md_var.h	Unstaticize {get,set}_fpcontext() on amd64	2022-01-04 13:25:12 +00:00
memdev.h	Add the MEM_EXTRACT_PADDR ioctl to /dev/mem.	2020-09-02 18:12:47 +00:00
metadata.h
minidump.h	Sparsify the vm_page_dump bitmap	2020-09-21 22:21:59 +00:00
mp_watchdog.h
msan.h	Add the KMSAN runtime	2021-08-10 21:27:53 -04:00
nexusvar.h
npx.h
ofw_machdep.h
param.h	amd64: Populate the KMSAN shadow maps and integrate with the VM	2021-08-10 21:27:53 -04:00
pcb.h	Fix for mis-interpretation of PCB_KERNFPU.	2020-10-14 23:01:41 +00:00
pci_cfgreg.h
pcpu_aux.h	amd64: move pcb out of kstack to struct thread.	2019-10-25 20:09:42 +00:00
pcpu.h	Remove PCPU_INC	2021-03-20 19:23:59 -07:00
pmap.h	amd64: Reduce the amount of cpuset copying done for TLB shootdowns	2021-11-15 13:01:31 -05:00
pmc_mdep.h
ppireg.h
proc.h	Make struct syscall_args machine independent	2021-12-08 18:45:33 +00:00
procctl.h
profile.h	x86: remove gcov kernel support	2021-04-02 15:41:51 +03:00
psl.h
ptrace.h
pvclock.h
reg.h
reloc.h
resource.h
runq.h
segments.h	amd64: move GDT into PCPU area.	2019-11-12 15:51:47 +00:00
setjmp.h
sf_buf.h
sgx.h
sgxreg.h
sigframe.h
signal.h
smp.h	amd64: rework AP startup	2021-07-27 20:11:15 +03:00
specialreg.h
stack.h
stdarg.h
sysarch.h
timerreg.h
tls.h	Add <machine/tls.h> header to hold MD constants and helpers for TLS.	2021-12-09 13:17:13 -08:00
trap.h
tss.h	amd64: move common_tss into pcpu.	2019-11-10 09:28:18 +00:00
ucontext.h
vdso.h
vm.h	Create VM_MEMATTR_DEVICE on all architectures	2021-04-12 06:15:31 +00:00
vmm_dev.h	bhyve: support relocating fbuf and passthru data BARs	2021-03-19 11:04:36 +08:00
vmm_instruction_emul.h	bhyve(8): For prototyping, reattempt decode in userspace	2020-06-25 00:18:42 +00:00
vmm_snapshot.h	amd64: clean up empty lines in .c and .h files	2020-09-01 21:16:54 +00:00
vmm.h	bhyve: support relocating fbuf and passthru data BARs	2021-03-19 11:04:36 +08:00
vmparam.h	amd64: provide PHYS_IN_DMAP() and VIRT_IN_DMAP()	2021-11-19 15:05:52 -04:00