linux/arch/arm64
Will Deacon e35123d83e arm64: lto: Strengthen READ_ONCE() to acquire when CONFIG_LTO=y
When building with LTO, there is an increased risk of the compiler
converting an address dependency headed by a READ_ONCE() invocation
into a control dependency and consequently allowing for harmful
reordering by the CPU.

Ensure that such transformations are harmless by overriding the generic
READ_ONCE() definition with one that provides acquire semantics when
building with LTO.

Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Acked-by: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Will Deacon <will@kernel.org>
2020-11-09 21:49:34 +00:00
..
boot Amlogic fixes for v5.10-rc1 2020-10-27 10:44:11 +01:00
configs arm64: defconfig: Build in CONFIG_GPIO_MXC by default 2020-10-26 15:48:58 +08:00
crypto Merge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6 2020-10-13 08:50:16 -07:00
include arm64: lto: Strengthen READ_ONCE() to acquire when CONFIG_LTO=y 2020-11-09 21:49:34 +00:00
kernel arm64: lto: Strengthen READ_ONCE() to acquire when CONFIG_LTO=y 2020-11-09 21:49:34 +00:00
kvm ARM: 2020-11-01 09:43:32 -08:00
lib arm64: uaccess: move uao_* alternatives to asm-uaccess.h 2020-11-09 21:49:34 +00:00
mm arm64: Add workaround for Arm Cortex-A77 erratum 1508412 2020-10-29 12:56:01 +00:00
net
xen
Kbuild
Kconfig arm64: cpufeatures: Add capability for LDAPR instruction 2020-11-09 21:49:34 +00:00
Kconfig.debug
Kconfig.platforms arm64: berlin: Select DW_APB_TIMER_OF 2020-10-26 10:45:03 +01:00
Makefile More arm64 updates for 5.10 2020-10-23 09:46:16 -07:00