Re: [PATCH v7 02/12] KVM: arm64: Use kvm_arch_flush_remote_tlbs()
From: Sean Christopherson <seanjc@google.com>
Date: 2023-07-31 21:50:14
Also in:
kvm, kvm-riscv, kvmarm, linux-mips, linux-riscv, lkml
On Thu, Jul 27, 2023, Marc Zyngier wrote:
On Sat, 22 Jul 2023 03:22:41 +0100, Raghavendra Rao Ananta [off-list ref] wrote:quoted
Stop depending on CONFIG_HAVE_KVM_ARCH_TLB_FLUSH_ALL and opt to standardize on kvm_arch_flush_remote_tlbs() since it avoids duplicating the generic TLB stats across architectures that implement their own remote TLB flush. This adds an extra function call to the ARM64 kvm_flush_remote_tlbs() path, but that is a small cost in comparison to flushing remote TLBs.Well, there is no such thing as a "remote TLB" anyway. We either have a non-shareable or inner-shareable invalidation. The notion of remote would imply that we track who potentially has a TLB, which we obviously don't.
Maybe kvm_arch_flush_vm_tlbs()? The "remote" part is misleading even on x86 when running on Hyper-V, as the flush may be done via a single hypercall and by kicking "remote" vCPUs. _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel