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KVM: MIPS: Add EVENTFD support which is needed by VHOST

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Add EVENTFD support for KVM/MIPS, which is needed by VHOST. Tested on
Loongson-3 platform.

Reviewed-by: Aleksandar Markovic <aleksandar.qemu.devel@gmail.com>
Signed-off-by: Huacai Chen <chenhc@lemote.com>
Co-developed-by: Jiaxun Yang <jiaxun.yang@flygoat.com>
Message-Id: <1590220602-3547-5-git-send-email-chenhc@lemote.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Huacai Chen 2020-05-23 15:56:31 +08:00 committed by Paolo Bonzini
parent 210b4b9112
commit bf10efbb81
4 changed files with 8 additions and 1 deletions
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1
arch/mips/kvm/Kconfig
View File

@ -22,6 +22,7 @@ config KVM
select EXPORT_UASM
select PREEMPT_NOTIFIERS
select KVM_GENERIC_DIRTYLOG_READ_PROTECT
select HAVE_KVM_EVENTFD
select HAVE_KVM_VCPU_ASYNC_IOCTL
select KVM_MMIO
select MMU_NOTIFIER

2
arch/mips/kvm/Makefile
View File

@ -2,7 +2,7 @@
# Makefile for KVM support for MIPS
#
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)
EXTRA_CFLAGS += -Ivirt/kvm -Iarch/mips/kvm

3
arch/mips/kvm/trap_emul.c
View File

@ -529,6 +529,9 @@ static int kvm_trap_emul_check_extension(struct kvm *kvm, long ext)
case KVM_CAP_MIPS_TE:
r = 1;
break;
case KVM_CAP_IOEVENTFD:
r = 1;
break;
default:
r = 0;
break;

3
arch/mips/kvm/vz.c
View File

@ -2927,6 +2927,9 @@ static int kvm_vz_check_extension(struct kvm *kvm, long ext)
r = 2;
break;
#endif
case KVM_CAP_IOEVENTFD:
r = 1;
break;
default:
r = 0;
break;