Marc Zyngier 06e55300b2 arm64: KVM: Yield CPU when vcpu executes a WFE ... On an (even slightly) oversubscribed system, spinlocks are quickly becoming a bottleneck, as some vcpus are spinning, waiting for a lock to be released, while the vcpu holding the lock may not be running at all. The solution is to trap blocking WFEs and tell KVM that we're now spinning. This ensures that other vpus will get a scheduling boost, allowing the lock to be released more quickly. Also, using CONFIG_HAVE_KVM_CPU_RELAX_INTERCEPT slightly improves the performance when the VM is severely overcommited. Acked-by: Christoffer Dall <christoffer.dall@linaro.org> Signed-off-by: Marc Zyngier <marc.zyngier@arm.com> Git-commit: d241aac798eb042e605f78c31a4122e583b2cd13 Git-repo: git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git Signed-off-by: Ian Maund <imaund@codeaurora.org>		2014-02-07 13:49:56 -08:00
..
emulate.c	arm64: KVM: 32bit conditional execution emulation	2014-02-07 13:49:35 -08:00
guest.c	ARM64: KVM: Implement kvm_vcpu_preferred_target() function	2014-02-07 13:49:49 -08:00
handle_exit.c	arm64: KVM: Yield CPU when vcpu executes a WFE	2014-02-07 13:49:56 -08:00
hyp-init.S	arm64: KVM: hypervisor initialization code	2014-02-07 13:49:32 -08:00
hyp.S	arm64: KVM: add missing dsb before invalidating Stage-2 TLBs	2014-02-07 13:49:42 -08:00
inject_fault.c	arm64: KVM: 32bit guest fault injection	2014-02-07 13:49:36 -08:00
Kconfig	arm64: KVM: Yield CPU when vcpu executes a WFE	2014-02-07 13:49:56 -08:00
Makefile	arm64: KVM: 32bit conditional execution emulation	2014-02-07 13:49:35 -08:00
regmap.c	arm64: KVM: 32bit GP register access	2014-02-07 13:49:35 -08:00
reset.c	arm64: KVM: enable initialization of a 32bit vcpu	2014-02-07 13:49:36 -08:00
sys_regs.c	arm64: KVM: perform save/restore of PAR_EL1	2014-02-07 13:49:42 -08:00
sys_regs.h
sys_regs_generic_v8.c	arm64: KVM: CPU specific 32bit coprocessor access	2014-02-07 13:49:35 -08:00