From: agraf@suse•de (Alexander Graf)
To: linux-arm-kernel@lists•infradead.org
Subject: [PATCH v11 1/6] KVM: Add architecture-specific TLB flush implementations
Date: Wed, 15 Oct 2014 13:17:25 +0200 [thread overview]
Message-ID: <543E57C5.5070205@suse.de> (raw)
In-Reply-To: <1411433690-8104-2-git-send-email-m.smarduch@samsung.com>
On 23.09.14 02:54, Mario Smarduch wrote:
> Add support to declare architecture specific TLB flush function, for now ARMv7.
>
> Signed-off-by: Mario Smarduch <m.smarduch@samsung•com>
> ---
> include/linux/kvm_host.h | 1 +
> virt/kvm/Kconfig | 3 +++
> virt/kvm/kvm_main.c | 4 ++++
> 3 files changed, 8 insertions(+)
>
> diff --git a/include/linux/kvm_host.h b/include/linux/kvm_host.h
> index ec4e3bd..a49a6df 100644
> --- a/include/linux/kvm_host.h
> +++ b/include/linux/kvm_host.h
> @@ -592,6 +592,7 @@ void kvm_load_guest_fpu(struct kvm_vcpu *vcpu);
> void kvm_put_guest_fpu(struct kvm_vcpu *vcpu);
>
> void kvm_flush_remote_tlbs(struct kvm *kvm);
> +void kvm_arch_flush_remote_tlbs(struct kvm *kvm);
> void kvm_reload_remote_mmus(struct kvm *kvm);
> void kvm_make_mclock_inprogress_request(struct kvm *kvm);
> void kvm_make_scan_ioapic_request(struct kvm *kvm);
> diff --git a/virt/kvm/Kconfig b/virt/kvm/Kconfig
> index 13f2d19..f1efaa5 100644
> --- a/virt/kvm/Kconfig
> +++ b/virt/kvm/Kconfig
> @@ -34,3 +34,6 @@ config HAVE_KVM_CPU_RELAX_INTERCEPT
>
> config KVM_VFIO
> bool
> +
> +config HAVE_KVM_ARCH_TLB_FLUSH_ALL
> + bool
> diff --git a/virt/kvm/kvm_main.c b/virt/kvm/kvm_main.c
> index 4b6c01b..d0a24f5 100644
> --- a/virt/kvm/kvm_main.c
> +++ b/virt/kvm/kvm_main.c
> @@ -186,12 +186,16 @@ static bool make_all_cpus_request(struct kvm *kvm, unsigned int req)
>
> void kvm_flush_remote_tlbs(struct kvm *kvm)
> {
> +#ifdef CONFIG_HAVE_KVM_ARCH_TLB_FLUSH_ALL
Please make this an #ifndef on the outer definition and just define your
own copy of this function inside of arch/arm/kvm :).
Alex
> + kvm_arch_flush_remote_tlbs(kvm);
> +#else
> long dirty_count = kvm->tlbs_dirty;
>
> smp_mb();
> if (make_all_cpus_request(kvm, KVM_REQ_TLB_FLUSH))
> ++kvm->stat.remote_tlb_flush;
> cmpxchg(&kvm->tlbs_dirty, dirty_count, 0);
> +#endif
> }
> EXPORT_SYMBOL_GPL(kvm_flush_remote_tlbs);
>
>
next prev parent reply other threads:[~2014-10-15 11:17 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-09-23 0:54 [PATCH v11 0/6] arm: dirty page logging support for ARMv7 Mario Smarduch
2014-09-23 0:54 ` [PATCH v11 1/6] KVM: Add architecture-specific TLB flush implementations Mario Smarduch
2014-10-15 11:17 ` Alexander Graf [this message]
2014-09-23 0:54 ` [PATCH v11 2/6] KVM: Add generic implementation of kvm_vm_ioctl_get_dirty_log Mario Smarduch
2014-09-29 13:36 ` Christoffer Dall
2014-09-29 17:18 ` Cornelia Huck
2014-09-29 18:02 ` Mario Smarduch
2014-10-15 11:21 ` Alexander Graf
2014-09-23 0:54 ` [PATCH v11 3/6] arm: KVM: Add ARMv7 API to flush TLBs Mario Smarduch
2014-09-23 0:54 ` [PATCH v11 4/6] arm: KVM: Add initial dirty page locking infrastructure Mario Smarduch
2014-09-23 0:54 ` [PATCH v11 5/6] arm: KVM: dirty log read write protect support Mario Smarduch
2014-09-23 0:54 ` [PATCH v11 6/6] arm: KVM: ARMv7 dirty page logging 2nd stage page fault Mario Smarduch
2014-09-29 13:35 ` Christoffer Dall
2014-09-29 21:03 ` Mario Smarduch
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