linux-kernel - [RFC 1/2] RISC-V: KVM: enable ioeventfd capability and compile for risc-v

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Date:   Fri, 24 Jul 2020 16:54:40 +0800
From:   Yifei Jiang <jiangyifei@...wei.com>
To:     <pbonzini@...hat.com>, <paul.walmsley@...ive.com>,
        <palmer@...belt.com>, <aou@...s.berkeley.edu>
CC:     <anup.patel@....com>, <atish.patra@....com>, <kvm@...r.kernel.org>,
        <kvm-riscv@...ts.infradead.org>, <linux-riscv@...ts.infradead.org>,
        <linux-kernel@...r.kernel.org>, <victor.zhangxiaofeng@...wei.com>,
        <wu.wubin@...wei.com>, <zhang.zhanghailiang@...wei.com>,
        <dengkai1@...wei.com>, <limingwang@...wei.com>,
        Yifei Jiang <jiangyifei@...wei.com>
Subject: [RFC 1/2] RISC-V: KVM: enable ioeventfd capability and compile for risc-v

Signed-off-by: Yifei Jiang <jiangyifei@...wei.com>
Signed-off-by: Mingwang Li <limingwang@...wei.com>
---
 arch/riscv/kvm/Kconfig  | 2 ++
 arch/riscv/kvm/Makefile | 2 +-
 arch/riscv/kvm/vm.c     | 1 +
 3 files changed, 4 insertions(+), 1 deletion(-)

diff --git a/arch/riscv/kvm/Kconfig b/arch/riscv/kvm/Kconfig
index 2356dc52ebb3..95d85d893ab6 100644
--- a/arch/riscv/kvm/Kconfig
+++ b/arch/riscv/kvm/Kconfig
@@ -4,6 +4,7 @@
 #
 
 source "virt/kvm/Kconfig"
+source "drivers/vhost/Kconfig"
 
 menuconfig VIRTUALIZATION
 	bool "Virtualization"
@@ -26,6 +27,7 @@ config KVM
 	select KVM_MMIO
 	select HAVE_KVM_VCPU_ASYNC_IOCTL
 	select SRCU
+	select HAVE_KVM_EVENTFD
 	help
 	  Support hosting virtualized guest machines.
 
diff --git a/arch/riscv/kvm/Makefile b/arch/riscv/kvm/Makefile
index b56dc1650d2c..3ad46fe44900 100644
--- a/arch/riscv/kvm/Makefile
+++ b/arch/riscv/kvm/Makefile
@@ -2,7 +2,7 @@
 # Makefile for RISC-V KVM support
 #
 
-common-objs-y = $(addprefix ../../../virt/kvm/, kvm_main.o coalesced_mmio.o)
+common-objs-y = $(addprefix ../../../virt/kvm/, kvm_main.o coalesced_mmio.o eventfd.o)
 
 ccflags-y := -Ivirt/kvm -Iarch/riscv/kvm
 
diff --git a/arch/riscv/kvm/vm.c b/arch/riscv/kvm/vm.c
index 4f2498198cb5..473299e71f68 100644
--- a/arch/riscv/kvm/vm.c
+++ b/arch/riscv/kvm/vm.c
@@ -52,6 +52,7 @@ int kvm_vm_ioctl_check_extension(struct kvm *kvm, long ext)
 	int r;
 
 	switch (ext) {
+	case KVM_CAP_IOEVENTFD:
 	case KVM_CAP_DEVICE_CTRL:
 	case KVM_CAP_USER_MEMORY:
 	case KVM_CAP_SYNC_MMU:
-- 
2.19.1