From: Sean Christopherson <seanjc@google.com>
To: Paolo Bonzini <pbonzini@redhat.com>
Cc: Sean Christopherson <seanjc@google.com>,
Vitaly Kuznetsov <vkuznets@redhat.com>,
Wanpeng Li <wanpengli@tencent.com>,
Jim Mattson <jmattson@google.com>, Joerg Roedel <joro@8bytes.org>,
kvm@vger.kernel.org, linux-kernel@vger.kernel.org,
Like Xu <like.xu.linux@gmail.com>
Subject: [PATCH 05/22] KVM: x86: Use static_call() for .vcpu_deliver_sipi_vector()
Date: Fri, 28 Jan 2022 00:51:51 +0000 [thread overview]
Message-ID: <20220128005208.4008533-6-seanjc@google.com> (raw)
In-Reply-To: <20220128005208.4008533-1-seanjc@google.com>
Define and use a static_call() for kvm_x86_ops.vcpu_deliver_sipi_vector(),
mostly so that the op is defined in kvm-x86-ops.h. This will allow using
KVM_X86_OP in vendor code to wire up the implementation. Any performance
gains eeked out by using static_call() is a happy bonus and not the
primary motiviation.
Signed-off-by: Sean Christopherson <seanjc@google.com>
---
arch/x86/include/asm/kvm-x86-ops.h | 1 +
arch/x86/kvm/lapic.c | 2 +-
2 files changed, 2 insertions(+), 1 deletion(-)
diff --git a/arch/x86/include/asm/kvm-x86-ops.h b/arch/x86/include/asm/kvm-x86-ops.h
index a87632641a13..eb93aa439d61 100644
--- a/arch/x86/include/asm/kvm-x86-ops.h
+++ b/arch/x86/include/asm/kvm-x86-ops.h
@@ -117,5 +117,6 @@ KVM_X86_OP(enable_direct_tlbflush)
KVM_X86_OP(migrate_timers)
KVM_X86_OP(msr_filter_changed)
KVM_X86_OP(complete_emulated_msr)
+KVM_X86_OP(vcpu_deliver_sipi_vector)
#undef KVM_X86_OP
diff --git a/arch/x86/kvm/lapic.c b/arch/x86/kvm/lapic.c
index d7e6fde82d25..dc4bc9eea81c 100644
--- a/arch/x86/kvm/lapic.c
+++ b/arch/x86/kvm/lapic.c
@@ -2928,7 +2928,7 @@ int kvm_apic_accept_events(struct kvm_vcpu *vcpu)
/* evaluate pending_events before reading the vector */
smp_rmb();
sipi_vector = apic->sipi_vector;
- kvm_x86_ops.vcpu_deliver_sipi_vector(vcpu, sipi_vector);
+ static_call(kvm_x86_vcpu_deliver_sipi_vector)(vcpu, sipi_vector);
vcpu->arch.mp_state = KVM_MP_STATE_RUNNABLE;
}
}
--
2.35.0.rc0.227.g00780c9af4-goog
next prev parent reply other threads:[~2022-01-28 0:53 UTC|newest]
Thread overview: 29+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-01-28 0:51 [PATCH 00/22] KVM: x86: Fill *_x86_ops via kvm-x86-ops.h Sean Christopherson
2022-01-28 0:51 ` [PATCH 01/22] KVM: x86: Drop unnecessary and confusing KVM_X86_OP_NULL macro Sean Christopherson
2022-01-28 10:11 ` Paolo Bonzini
2022-01-28 15:42 ` Sean Christopherson
2022-01-31 14:56 ` Paolo Bonzini
2022-01-31 15:19 ` Maxim Levitsky
2022-01-31 16:48 ` Sean Christopherson
2022-01-28 0:51 ` [PATCH 02/22] KVM: x86: Move delivery of non-APICv interrupt into vendor code Sean Christopherson
2022-01-28 0:51 ` [PATCH 03/22] KVM: x86: Drop export for .tlb_flush_current() static_call key Sean Christopherson
2022-01-28 0:51 ` [PATCH 04/22] KVM: x86: Rename kvm_x86_ops pointers to align w/ preferred vendor names Sean Christopherson
2022-01-28 0:51 ` Sean Christopherson [this message]
2022-01-28 0:51 ` [PATCH 06/22] KVM: VMX: Call vmx_get_cpl() directly in handle_dr() Sean Christopherson
2022-01-28 0:51 ` [PATCH 07/22] KVM: xen: Use static_call() for invoking kvm_x86_ops hooks Sean Christopherson
2022-01-28 0:51 ` [PATCH 08/22] KVM: nVMX: Refactor PMU refresh to avoid referencing kvm_x86_ops.pmu_ops Sean Christopherson
2022-01-28 0:51 ` [PATCH 09/22] KVM: x86: Uninline and export hv_track_root_tdp() Sean Christopherson
2022-01-31 16:19 ` Vitaly Kuznetsov
2022-01-28 0:51 ` [PATCH 10/22] KVM: x86: Unexport kvm_x86_ops Sean Christopherson
2022-01-28 0:51 ` [PATCH 11/22] KVM: x86: Use static_call() for copy/move encryption context ioctls() Sean Christopherson
2022-01-28 0:51 ` [PATCH 12/22] KVM: x86: Allow different macros for APICv, CVM, and Hyper-V kvm_x86_ops Sean Christopherson
2022-01-28 0:51 ` [PATCH 13/22] KVM: VMX: Rename VMX functions to conform to kvm_x86_ops names Sean Christopherson
2022-01-28 0:52 ` [PATCH 14/22] KVM: VMX: Use kvm-x86-ops.h to fill vmx_x86_ops Sean Christopherson
2022-01-28 0:52 ` [PATCH 15/22] KVM: x86: Move get_cs_db_l_bits() helper to SVM Sean Christopherson
2022-01-28 0:52 ` [PATCH 16/22] KVM: SVM: Rename svm_flush_tlb() to svm_flush_tlb_current() Sean Christopherson
2022-01-28 0:52 ` [PATCH 17/22] KVM: SVM: Remove unused MAX_INST_SIZE #define Sean Christopherson
2022-01-28 0:52 ` [PATCH 18/22] KVM: SVM: Rename AVIC helpers to use "avic" prefix instead of "svm" Sean Christopherson
2022-01-28 0:52 ` [PATCH 19/22] KVM: x86: Use more verbose names for mem encrypt kvm_x86_ops hooks Sean Christopherson
2022-01-28 0:52 ` [PATCH 20/22] KVM: SVM: Rename SEV implemenations to conform to " Sean Christopherson
2022-01-28 0:52 ` [PATCH 21/22] KVM: SVM: Rename hook implementations to conform to kvm_x86_ops' names Sean Christopherson
2022-01-28 0:52 ` [PATCH 22/22] KVM: SVM: Use kvm-x86-ops.h to fill svm_x86_ops Sean Christopherson
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