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freebsd-skq/sys/amd64
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kib 3d18a9d66f Add atomic_load(9) and atomic_store(9) operations. 
They provide relaxed-ordered atomic access semantic.  Due to the
FreeBSD memory model, the operations are syntaxical wrappers around
the volatile accesses.  The volatile qualifier is used to ensure that
the access not optimized out and in turn depends on the volatile
semantic as implemented by supported compilers.

The motivation for adding the operation is to help people coming from
other systems or knowing the C11/C++ standards where atomics have
special type and require use of the special access operations.  It is
still the case that FreeBSD requires plain load and stores of aligned
integer types to be atomic.

Suggested by:	jhb
Reviewed by:	alc, jhb
Sponsored by:	The FreeBSD Foundation
MFC after:	1 week
Differential revision:	https://reviews.freebsd.org/D13534
2017-12-19 09:59:20 +00:00
..
acpica sys/amd64: further adoption of SPDX licensing ID tags. 2017-11-27 15:03:07 +00:00
amd64 Pass the trap frame to fasttrap hooks. 2017-12-11 19:21:39 +00:00
cloudabi32 Use TO_PTR() to convert integers to pointers. 2017-11-26 14:45:56 +00:00
cloudabi64 Use TO_PTR() to convert integers to pointers. 2017-11-26 14:45:56 +00:00
conf It's time to retire AHC_REG_PRETTY_PRINT and AHD_REG_PRETTY_PRINT from 2017-11-29 23:41:49 +00:00
ia32 sys/amd64: further adoption of SPDX licensing ID tags. 2017-11-27 15:03:07 +00:00
include Add atomic_load(9) and atomic_store(9) operations. 2017-12-19 09:59:20 +00:00
linux Disable vim syntax highlighting. 2017-11-28 18:23:17 +00:00
linux32 Disable vim syntax highlighting. 2017-11-28 18:23:17 +00:00
pci sys/amd64: further adoption of SPDX licensing ID tags. 2017-11-27 15:03:07 +00:00
sgx Fix module unload when SGX support is not present in CPU. 2017-08-18 14:47:06 +00:00
vmm amd-vi: set iommu msi configuration using pci_enable_msi method 2017-12-04 17:10:52 +00:00
Makefile