kernel_optimize_test/arch/arm/kvm
Marc Zyngier aeda9130c3 arm/arm64: KVM: Optimize handling of Access Flag faults
Now that we have page aging in Stage-2, it becomes obvious that
we're doing way too much work handling the fault.

The page is not going anywhere (it is still mapped), the page
tables are already allocated, and all we want is to flip a bit
in the PMD or PTE. Also, we can avoid any form of TLB invalidation,
since a page with the AF bit off is not allowed to be cached.

An obvious solution is to have a separate handler for FSC_ACCESS,
where we pride ourselves to only do the very minimum amount of
work.

Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Acked-by: Christoffer Dall <christoffer.dall@linaro.org>
Signed-off-by: Christoffer Dall <christoffer.dall@linaro.org>
2015-03-12 22:34:49 +01:00
..
arm.c KVM: arm/arm64: add irqfd support 2015-03-12 15:15:34 +01:00
coproc_a7.c arm/arm64: KVM: Use set/way op trapping to track the state of the caches 2015-01-29 23:24:56 +01:00
coproc_a15.c arm/arm64: KVM: Use set/way op trapping to track the state of the caches 2015-01-29 23:24:56 +01:00
coproc.c arm/arm64: KVM: Use set/way op trapping to track the state of the caches 2015-01-29 23:24:56 +01:00
coproc.h arm/arm64: KVM: Use set/way op trapping to track the state of the caches 2015-01-29 23:24:56 +01:00
emulate.c KVM: ARM: Fix typo in comments of inject_abt() 2013-10-02 17:29:19 +01:00
guest.c arm/arm64: KVM: Kill CONFIG_KVM_ARM_{VGIC,TIMER} 2015-03-12 15:15:27 +01:00
handle_exit.c ARM: KVM: extend WFI tracepoint to differentiate between wfi and wfe 2015-01-15 13:12:27 +01:00
init.S ARM/ARM64: KVM: Nuke Hyp-mode tlbs before enabling MMU 2014-08-29 11:53:26 +02:00
interrupts_head.S arm/arm64: KVM: Kill CONFIG_KVM_ARM_{VGIC,TIMER} 2015-03-12 15:15:27 +01:00
interrupts.S KVM: arm: Add ARMv7 API to flush TLBs 2015-01-16 14:40:14 +01:00
Kconfig KVM: arm/arm64: add irqfd support 2015-03-12 15:15:34 +01:00
Makefile KVM: arm/arm64: add irqfd support 2015-03-12 15:15:34 +01:00
mmio.c arm/arm64: KVM: avoid unnecessary guest register mangling on MMIO read 2014-11-25 13:57:28 +00:00
mmu.c arm/arm64: KVM: Optimize handling of Access Flag faults 2015-03-12 22:34:49 +01:00
perf.c ARM: KVM: add support for minimal host vs guest profiling 2013-04-28 21:44:01 -07:00
psci.c arm/arm64: KVM: rework MPIDR assignment and add accessors 2015-01-20 18:25:17 +01:00
reset.c Updates for KVM/ARM, take 3 supporting more than 4 CPUs. 2013-11-11 12:02:27 +01:00
trace.h arm/arm64: KVM: Optimize handling of Access Flag faults 2015-03-12 22:34:49 +01:00