linux-kernel - [PATCH 1/4] linux-headers/linux/kvm.h: introduce kvm_userspace_memory_region

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Date:   Sat, 22 Oct 2022 11:48:16 -0400
From:   Emanuele Giuseppe Esposito <eesposit@...hat.com>
To:     kvm@...r.kernel.org
Cc:     Paolo Bonzini <pbonzini@...hat.com>,
        Jonathan Corbet <corbet@....net>,
        Maxim Levitsky <mlevitsk@...hat.com>,
        Sean Christopherson <seanjc@...gle.com>,
        Thomas Gleixner <tglx@...utronix.de>,
        Ingo Molnar <mingo@...hat.com>, Borislav Petkov <bp@...en8.de>,
        Dave Hansen <dave.hansen@...ux.intel.com>,
        David Hildenbrand <david@...hat.com>, x86@...nel.org,
        "H. Peter Anvin" <hpa@...or.com>, linux-doc@...r.kernel.org,
        linux-kernel@...r.kernel.org,
        Emanuele Giuseppe Esposito <eesposit@...hat.com>
Subject: [PATCH 1/4] linux-headers/linux/kvm.h: introduce kvm_userspace_memory_region_list ioctl

Introduce new KVM_KICK_ALL_RUNNING_VCPUS and KVM_RESUME_ALL_KICKED_VCPUS
ioctl that will be used respectively to pause and then resume all vcpus
currently executing KVM_RUN in kvm.

Signed-off-by: Emanuele Giuseppe Esposito <eesposit@...hat.com>
---
 include/uapi/linux/kvm.h | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/include/uapi/linux/kvm.h b/include/uapi/linux/kvm.h
index eed0315a77a6..d3cba8d4ca91 100644
--- a/include/uapi/linux/kvm.h
+++ b/include/uapi/linux/kvm.h
@@ -2227,4 +2227,7 @@ struct kvm_s390_zpci_op {
 /* flags for kvm_s390_zpci_op->u.reg_aen.flags */
 #define KVM_S390_ZPCIOP_REGAEN_HOST    (1 << 0)
 
+#define KVM_KICK_ALL_RUNNING_VCPUS		_IO(KVMIO,  0xd2)
+#define KVM_RESUME_ALL_KICKED_VCPUS		_IO(KVMIO,  0xd3)
+
 #endif /* __LINUX_KVM_H */
-- 
2.31.1