linux/arch/arm64
Marc Zyngier c585132840 arm64: KVM: vgic-v3: Relax synchronization when SRE==1
The GICv3 backend of the vgic is quite barrier heavy, in order
to ensure synchronization of the system registers and the
memory mapped view for a potential GICv2 guest.

But when the guest is using a GICv3 model, there is absolutely
no need to execute all these heavy barriers, and it is actually
beneficial to avoid them altogether.

This patch makes the synchonization conditional, and ensures
that we do not change the EL1 SRE settings if we do not need to.

Reviewed-by: Christoffer Dall <christoffer.dall@linaro.org>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Christoffer Dall <christoffer.dall@linaro.org>
2016-05-31 16:12:17 +02:00
..
boot ARM: SoC: late DT updates for v4.7 2016-05-24 15:46:06 -07:00
configs Merge git://www.linux-watchdog.org/linux-watchdog 2016-05-25 10:19:17 -07:00
crypto Merge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6 2016-03-17 11:22:54 -07:00
include - move kvm_stat tool from QEMU repo into tools/kvm/kvm_stat 2016-05-27 13:41:54 -07:00
kernel Merge branch 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2016-05-25 17:05:40 -07:00
kvm arm64: KVM: vgic-v3: Relax synchronization when SRE==1 2016-05-31 16:12:17 +02:00
lib arm64 updates for 4.6: 2016-03-17 20:03:47 -07:00
mm Merge branch 'akpm' (patches from Andrew) 2016-05-19 20:00:06 -07:00
net bpf: arm64: remove callee-save registers use for tmp registers 2016-05-17 14:03:33 -04:00
xen xen/arm: introduce HYPERVISOR_platform_op on arm and arm64 2015-12-21 14:40:56 +00:00
Kconfig Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next 2016-05-17 16:26:30 -07:00
Kconfig.debug arm64: simplify kernel segment mapping granularity 2016-04-14 18:11:44 +01:00
Kconfig.platforms ARM: SoC 64-bit changes for v4.7 2016-05-18 12:43:08 -07:00
Makefile arm64 updates for 4.6: 2016-03-17 20:03:47 -07:00