From: Huacai Chen <chenhc@lemote.com>
To: Paolo Bonzini <pbonzini@redhat.com>,
Thomas Bogendoerfer <tsbogend@alpha.franken.de>,
Aleksandar Markovic <aleksandar.qemu.devel@gmail.com>
Cc: kvm@vger.kernel.org, linux-mips@vger.kernel.org,
Fuxin Zhang <zhangfx@lemote.com>,
Huacai Chen <chenhuacai@gmail.com>,
Jiaxun Yang <jiaxun.yang@flygoat.com>,
Huacai Chen <chenhc@lemote.com>
Subject: [PATCH V7 04/15] KVM: MIPS: Add EVENTFD support which is needed by VHOST
Date: Sat, 23 May 2020 15:56:31 +0800 [thread overview]
Message-ID: <1590220602-3547-5-git-send-email-chenhc@lemote.com> (raw)
In-Reply-To: <1590220602-3547-1-git-send-email-chenhc@lemote.com>
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>
---
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
next prev parent reply other threads:[~2020-05-23 7:58 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-05-23 7:56 [PATCH V7 00/15] KVM: MIPS: Add Loongson-3 support (Host Side) Huacai Chen
2020-05-23 7:56 ` [PATCH V7 01/15] KVM: MIPS: Define KVM_ENTRYHI_ASID to cpu_asid_mask(&boot_cpu_data) Huacai Chen
2020-05-23 7:56 ` [PATCH V7 02/15] KVM: MIPS: Fix VPN2_MASK definition for variable cpu_vmbits Huacai Chen
2020-05-23 7:56 ` [PATCH V7 03/15] KVM: MIPS: Increase KVM_MAX_VCPUS and KVM_USER_MEM_SLOTS to 16 Huacai Chen
2020-05-23 7:56 ` Huacai Chen [this message]
2020-05-23 7:56 ` [PATCH V7 05/15] KVM: MIPS: Use lddir/ldpte instructions to lookup gpa_mm.pgd Huacai Chen
2020-05-23 7:56 ` [PATCH V7 06/15] KVM: MIPS: Introduce and use cpu_guest_has_ldpte Huacai Chen
2020-05-23 7:56 ` [PATCH V7 07/15] KVM: MIPS: Use root tlb to control guest's CCA for Loongson-3 Huacai Chen
2020-05-23 7:56 ` [PATCH V7 08/15] KVM: MIPS: Let indexed cacheops cause guest exit on Loongson-3 Huacai Chen
2020-05-23 7:56 ` [PATCH V7 09/15] KVM: MIPS: Add more types of virtual interrupts Huacai Chen
2020-05-23 7:56 ` [PATCH V7 10/15] KVM: MIPS: Add Loongson-3 Virtual IPI interrupt support Huacai Chen
2020-05-23 7:56 ` [PATCH V7 11/15] KVM: MIPS: Add CPUCFG emulation for Loongson-3 Huacai Chen
2020-05-23 7:56 ` [PATCH V7 12/15] KVM: MIPS: Add CONFIG6 and DIAG registers emulation Huacai Chen
2020-05-23 13:27 ` WANG Xuerui
[not found] ` <CAHiYmc6YDw7=mqXfMdgSfeR-HVd2Ec+sQVquM=Z6jLke2s-VEw@mail.gmail.com>
2020-05-24 2:45 ` Huacai Chen
2020-05-23 7:56 ` [PATCH V7 13/15] KVM: MIPS: Add more MMIO load/store instructions emulation Huacai Chen
2020-05-23 7:56 ` [PATCH V7 14/15] KVM: MIPS: Enable KVM support for Loongson-3 Huacai Chen
2020-05-23 7:56 ` [PATCH V7 15/15] MAINTAINERS: Update KVM/MIPS maintainers Huacai Chen
2020-05-23 9:01 ` [PATCH V7 00/15] KVM: MIPS: Add Loongson-3 support (Host Side) Aleksandar Markovic
2020-06-04 17:57 ` Paolo Bonzini
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=1590220602-3547-5-git-send-email-chenhc@lemote.com \
--to=chenhc@lemote.com \
--cc=aleksandar.qemu.devel@gmail.com \
--cc=chenhuacai@gmail.com \
--cc=jiaxun.yang@flygoat.com \
--cc=kvm@vger.kernel.org \
--cc=linux-mips@vger.kernel.org \
--cc=pbonzini@redhat.com \
--cc=tsbogend@alpha.franken.de \
--cc=zhangfx@lemote.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).