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Commit e69244d2 authored by Will Deacon's avatar Will Deacon Committed by Russell King
Browse files

ARM: 8777/1: Hook up SYNC_CORE functionality for sys_membarrier() 



Exception return implies context synchronization, so we can hook up the
SYNC_CORE option to sys_membarrier() simply by selecting the Kconfig option,
just like we've done for arm64 already.

Cc: Orion Hodson <oth@google.com>
Acked-by: default avatarMathieu Desnoyers <mathieu.desnoyers@efficios.com>
Signed-off-by: default avatarWill Deacon <will.deacon@arm.com>
Signed-off-by: default avatarRussell King <rmk+kernel@armlinux.org.uk>
parent ce397d21

Documentation/features/sched/membarrier-sync-core/arch-support.txt

+4 −4
Original line number Diff line number Diff line
@@ -5,10 +5,10 @@ 
#

# Architecture requirements

#

# * arm64

# * arm/arm64

#

# Rely on eret context synchronization when returning from IPI handler, and

# when returning to user-space.

# Rely on implicit context synchronization as a result of exception return

# when returning from IPI handler, and when returning to user-space.

#

# * x86

#
@@ -31,7 +31,7 @@ 
    -----------------------

    |       alpha: | TODO |

    |         arc: | TODO |

    |         arm: | TODO |

    |         arm: |  ok  |

    |       arm64: |  ok  |

    |         c6x: | TODO |

    |       h8300: | TODO |

arch/arm/Kconfig

+1 −0
Original line number Diff line number Diff line
@@ -9,6 +9,7 @@ config ARM 
	select ARCH_HAS_ELF_RANDOMIZE

	select ARCH_HAS_FORTIFY_SOURCE

	select ARCH_HAS_KCOV

	select ARCH_HAS_MEMBARRIER_SYNC_CORE

	select ARCH_HAS_PTE_SPECIAL if ARM_LPAE

	select ARCH_HAS_PHYS_TO_DMA

	select ARCH_HAS_SET_MEMORY