From: Wei Wang <wei.w.wang@intel.com>
To: pbonzini@redhat.com, seanjc@google.com
Cc: kvm@vger.kernel.org, linux-kernel@vger.kernel.org,
Wei Wang <wei.w.wang@intel.com>
Subject: [PATCH v1] KVM: x86: add KVM_CAP_DEVICE_CTRL
Date: Thu, 15 Dec 2022 19:52:07 +0800 [thread overview]
Message-ID: <20221215115207.14784-1-wei.w.wang@intel.com> (raw)
KVM_CAP_DEVICE_CTRL allows userspace to create emulated device in KVM.
For example, userspace VFIO implementation needs to create a kvm_device
(i.e. KVM_DEV_TYPE_VFIO) on x86. So add the cap to allow userspace for
such use cases.
Signed-off-by: Wei Wang <wei.w.wang@intel.com>
---
arch/x86/kvm/x86.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
index 69227f77b201..1cdc4469652c 100644
--- a/arch/x86/kvm/x86.c
+++ b/arch/x86/kvm/x86.c
@@ -4410,6 +4410,7 @@ int kvm_vm_ioctl_check_extension(struct kvm *kvm, long ext)
case KVM_CAP_VAPIC:
case KVM_CAP_ENABLE_CAP:
case KVM_CAP_VM_DISABLE_NX_HUGE_PAGES:
+ case KVM_CAP_DEVICE_CTRL:
r = 1;
break;
case KVM_CAP_EXIT_HYPERCALL:
--
2.32.0
next reply other threads:[~2022-12-15 11:52 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-12-15 11:52 Wei Wang [this message]
2022-12-16 17:12 ` Sean Christopherson
2022-12-19 13:29 ` Wang, Wei W
2022-12-19 20:35 ` Sean Christopherson
2022-12-20 1:34 ` Wang, Wei W
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=20221215115207.14784-1-wei.w.wang@intel.com \
--to=wei.w.wang@intel.com \
--cc=kvm@vger.kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=pbonzini@redhat.com \
--cc=seanjc@google.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
Powered by JetHome