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[PATCH 05/15] KVM: MIPS: Add EVENTFD support which is needed by VHOST
From: |
Huacai Chen |
Subject: |
[PATCH 05/15] KVM: MIPS: Add EVENTFD support which is needed by VHOST |
Date: |
Mon, 13 Apr 2020 15:30:14 +0800 |
Add EVENTFD support for KVM/MIPS, which is needed by VHOST. Tested on
Loongson-3 platform.
Signed-off-by: Huacai Chen <address@hidden>
Co-developed-by: Jiaxun Yang <address@hidden>
---
arch/mips/kvm/Kconfig | 1 +
arch/mips/kvm/Makefile | 2 +-
arch/mips/kvm/trap_emul.c | 3 +++
arch/mips/kvm/vz.c | 3 +++
4 files changed, 8 insertions(+), 1 deletion(-)
diff --git a/arch/mips/kvm/Kconfig b/arch/mips/kvm/Kconfig
index eac25ae..80b0464 100644
--- a/arch/mips/kvm/Kconfig
+++ b/arch/mips/kvm/Kconfig
@@ -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
diff --git a/arch/mips/kvm/Makefile b/arch/mips/kvm/Makefile
index 01affc1..0a3cef6 100644
--- a/arch/mips/kvm/Makefile
+++ b/arch/mips/kvm/Makefile
@@ -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
diff --git a/arch/mips/kvm/trap_emul.c b/arch/mips/kvm/trap_emul.c
index 5a11e83..f464506b 100644
--- a/arch/mips/kvm/trap_emul.c
+++ b/arch/mips/kvm/trap_emul.c
@@ -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;
diff --git a/arch/mips/kvm/vz.c b/arch/mips/kvm/vz.c
index dde2088..17932ab 100644
--- a/arch/mips/kvm/vz.c
+++ b/arch/mips/kvm/vz.c
@@ -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;
--
2.7.0
- [PATCH 0/15] KVM: MIPS: Add Loongson-3 support (Host Side), Huacai Chen, 2020/04/13
- [PATCH 01/15] mips: define pud_index() regardless of page table folding, Huacai Chen, 2020/04/13
- [PATCH 02/15] KVM: MIPS: Define KVM_ENTRYHI_ASID to cpu_asid_mask(&boot_cpu_data), Huacai Chen, 2020/04/13
- [PATCH 03/15] KVM: MIPS: Fix VPN2_MASK definition for variable cpu_vmbits, Huacai Chen, 2020/04/13
- [PATCH 04/15] KVM: MIPS: Increase KVM_MAX_VCPUS and KVM_USER_MEM_SLOTS to 16, Huacai Chen, 2020/04/13
- [PATCH 05/15] KVM: MIPS: Add EVENTFD support which is needed by VHOST,
Huacai Chen <=
- [PATCH 06/15] KVM: MIPS: Use lddir/ldpte instructions to lookup gpa_mm.pgd, Huacai Chen, 2020/04/13
- [PATCH 07/15] KVM: MIPS: Introduce and use cpu_guest_has_ldpte, Huacai Chen, 2020/04/13
- [PATCH 08/15] KVM: MIPS: Use root tlb to control guest's CCA for Loongson-3, Huacai Chen, 2020/04/13
- [PATCH 09/15] KVM: MIPS: Let indexed cacheops cause guest exit on Loongson-3, Huacai Chen, 2020/04/13
- [PATCH 10/15] KVM: MIPS: Add more types of virtual interrupts, Huacai Chen, 2020/04/13
- [PATCH 11/15] KVM: MIPS: Add Loongson-3 Virtual IPI interrupt support, Huacai Chen, 2020/04/13
- [PATCH 12/15] KVM: MIPS: Add CPUCFG emulation for Loongson-3, Huacai Chen, 2020/04/13
- [PATCH 13/15] KVM: MIPS: Add CONFIG6 and DIAG registers emulation, Huacai Chen, 2020/04/13