linux_dsm_epyc7002/arch/arm64
Will Deacon 120798d2e7 arm64: mm: remove dsb from update_mmu_cache
update_mmu_cache() consists of a dsb(ishst) instruction so that new user
mappings are guaranteed to be visible to the page table walker on
exception return.

In reality this can be a very expensive operation which is rarely needed.
Removing this barrier shows a modest improvement in hackbench scores and
, in the worst case, we re-take the user fault and establish that there
was nothing to do.

Reviewed-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
2015-10-07 11:56:37 +01:00
..
boot Documentation: arm: Fix typo in the idle-states bindings examples 2015-09-24 17:55:32 -05:00
configs arm64: defconfig: Enable samsung serial and mmc 2015-10-07 11:34:24 +01:00
crypto crypto: aead - Remove CRYPTO_ALG_AEAD_NEW flag 2015-08-17 16:53:53 +08:00
include arm64: mm: remove dsb from update_mmu_cache 2015-10-07 11:56:37 +01:00
kernel arm64: mm: kill mm_cpumask usage 2015-10-07 11:56:29 +01:00
kvm Second set of KVM/ARM changes for 4.3-rc2 2015-09-17 16:51:59 +02:00
lib arm64: copy_to-from-in_user optimization using copy template 2015-10-07 11:34:44 +01:00
mm arm64: mm: kill mm_cpumask usage 2015-10-07 11:56:29 +01:00
net arm64: bpf: fix endianness conversion bugs 2015-06-26 14:15:39 +01:00
xen arm: xen: implement multicall hypercall support. 2014-04-24 13:09:46 +01:00
Kconfig arm64: errata: add module build workaround for erratum #843419 2015-09-17 11:57:03 +01:00
Kconfig.debug coresight: moving to new "hwtracing" directory 2015-04-03 16:17:04 +02:00
Kconfig.platforms arm64: Enable Marvell Berlin SoC family in Kconfig 2015-08-06 10:15:01 +02:00
Makefile arm64: errata: add module build workaround for erratum #843419 2015-09-17 11:57:03 +01:00