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Re: [PATCH V3 04/14] KVM: MIPS: Add EVENTFD support which is needed by V
From: |
Aleksandar Markovic |
Subject: |
Re: [PATCH V3 04/14] KVM: MIPS: Add EVENTFD support which is needed by VHOST |
Date: |
Fri, 8 May 2020 11:08:03 +0200 |
нед, 3. мај 2020. у 12:09 Huacai Chen <address@hidden> је написао/ла:
>
> 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>
> ---
Perhaps this patch needs rebasing to land cleanly into master.
But, in general, for what is worth:
Reviewed-by: Aleksandar Markovic <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 b91d145..d697752 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 V3 00/14] KVM: MIPS: Add Loongson-3 support (Host Side), Huacai Chen, 2020/05/03
- [PATCH V3 01/14] KVM: MIPS: Define KVM_ENTRYHI_ASID to cpu_asid_mask(&boot_cpu_data), Huacai Chen, 2020/05/03
- [PATCH V3 02/14] KVM: MIPS: Fix VPN2_MASK definition for variable cpu_vmbits, Huacai Chen, 2020/05/03
- [PATCH V3 03/14] KVM: MIPS: Increase KVM_MAX_VCPUS and KVM_USER_MEM_SLOTS to 16, Huacai Chen, 2020/05/03
- [PATCH V3 04/14] KVM: MIPS: Add EVENTFD support which is needed by VHOST, Huacai Chen, 2020/05/03
- Re: [PATCH V3 04/14] KVM: MIPS: Add EVENTFD support which is needed by VHOST,
Aleksandar Markovic <=
- [PATCH V3 05/14] KVM: MIPS: Use lddir/ldpte instructions to lookup gpa_mm.pgd, Huacai Chen, 2020/05/03
- [PATCH V3 06/14] KVM: MIPS: Introduce and use cpu_guest_has_ldpte, Huacai Chen, 2020/05/03
- [PATCH V3 07/14] KVM: MIPS: Use root tlb to control guest's CCA for Loongson-3, Huacai Chen, 2020/05/03
- [PATCH V3 08/14] KVM: MIPS: Let indexed cacheops cause guest exit on Loongson-3, Huacai Chen, 2020/05/03
- [PATCH V3 09/14] KVM: MIPS: Add more types of virtual interrupts, Huacai Chen, 2020/05/03