diff options
| author | Linus Torvalds <torvalds@linux-foundation.org> | 2011-09-26 13:26:30 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2011-09-26 13:26:30 -0700 |
| commit | a2b49102daac7a1d90dc01bfc4350ef68aa1204d (patch) | |
| tree | 5f626f0a4c042f805b907a3177af292870f2ef6a /arch/arm/Kconfig | |
| parent | f9d81f61c84aca693bc353dfef4b8c36c2e5e1b5 (diff) | |
| parent | df77abcafc8dc881b6c9347548651777088e4b27 (diff) | |
Merge branch 'fixes' of http://ftp.arm.linux.org.uk/pub/linux/arm/kernel/git-cur/linux-2.6-arm
* 'fixes' of http://ftp.arm.linux.org.uk/pub/linux/arm/kernel/git-cur/linux-2.6-arm:
ARM: 7099/1: futex: preserve oldval in SMP __futex_atomic_op
ARM: dma-mapping: free allocated page if unable to map
ARM: fix vmlinux.lds.S discarding sections
ARM: nommu: fix warning with checksyscalls.sh
ARM: 7091/1: errata: D-cache line maintenance operation by MVA may not succeed
Diffstat (limited to 'arch/arm/Kconfig')
| -rw-r--r-- | arch/arm/Kconfig | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig index 3269576dbfa..3146ed3f6ec 100644 --- a/arch/arm/Kconfig +++ b/arch/arm/Kconfig @@ -1283,6 +1283,20 @@ config ARM_ERRATA_364296 processor into full low interrupt latency mode. ARM11MPCore is not affected. +config ARM_ERRATA_764369 + bool "ARM errata: Data cache line maintenance operation by MVA may not succeed" + depends on CPU_V7 && SMP + help + This option enables the workaround for erratum 764369 + affecting Cortex-A9 MPCore with two or more processors (all + current revisions). Under certain timing circumstances, a data + cache line maintenance operation by MVA targeting an Inner + Shareable memory region may fail to proceed up to either the + Point of Coherency or to the Point of Unification of the + system. This workaround adds a DSB instruction before the + relevant cache maintenance functions and sets a specific bit + in the diagnostic control register of the SCU. + endmenu source "arch/arm/common/Kconfig" |