From patchwork Fri Sep 9 08:11:48 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Emanuele Giuseppe Esposito X-Patchwork-Id: 12971220 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 370DCECAAD3 for ; Fri, 9 Sep 2022 08:12:13 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231196AbiIIIMM (ORCPT ); Fri, 9 Sep 2022 04:12:12 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:49664 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231336AbiIIIMD (ORCPT ); Fri, 9 Sep 2022 04:12:03 -0400 Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.129.124]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 06E0B9AFFD for ; Fri, 9 Sep 2022 01:12:01 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1662711120; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=Dv8E089/Ce3sIyDZyw/7/MM/uy1FTYMuPvEb8JTQjDM=; b=ARTv0ijpj7KkYRgJAy3+ExqYbIR9hR1y46KY02ECogp/L9JkEwXdTdoTojX9ouNMFI1rf7 s94ZnCUKbEi9esKxJyHnwRPq3EK0O1+cJWJ36nfMVu0rJgNDURm6DC+R+a+Pl8gekvQ1km J4ZJXS2N3TQwLsbowtwHe6J+Zzo6/TI= Received: from mimecast-mx02.redhat.com (mimecast-mx02.redhat.com [66.187.233.88]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id us-mta-249-1dsDE7UqPz6AH0JP1Uuj6w-1; Fri, 09 Sep 2022 04:11:56 -0400 X-MC-Unique: 1dsDE7UqPz6AH0JP1Uuj6w-1 Received: from smtp.corp.redhat.com (int-mx01.intmail.prod.int.rdu2.redhat.com [10.11.54.1]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx02.redhat.com (Postfix) with ESMTPS id 263E0101E167; Fri, 9 Sep 2022 08:11:56 +0000 (UTC) Received: from virtlab701.virt.lab.eng.bos.redhat.com (virtlab701.virt.lab.eng.bos.redhat.com [10.19.152.228]) by smtp.corp.redhat.com (Postfix) with ESMTP id D4D2A400EA8F; Fri, 9 Sep 2022 08:11:55 +0000 (UTC) From: Emanuele Giuseppe Esposito To: qemu-devel@nongnu.org Cc: Paolo Bonzini , "Michael S. Tsirkin" , Cornelia Huck , Peter Xu , David Hildenbrand , =?utf-8?q?Philippe_Mathieu-Daud=C3=A9?= , Maxim Levitsky , kvm@vger.kernel.org, Emanuele Giuseppe Esposito Subject: [RFC PATCH v2 1/3] linux-headers/linux/kvm.h: introduce kvm_userspace_memory_region_list ioctl Date: Fri, 9 Sep 2022 04:11:48 -0400 Message-Id: <20220909081150.709060-2-eesposit@redhat.com> In-Reply-To: <20220909081150.709060-1-eesposit@redhat.com> References: <20220909081150.709060-1-eesposit@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.84 on 10.11.54.1 Precedence: bulk List-ID: X-Mailing-List: kvm@vger.kernel.org Introduce new KVM_SET_USER_MEMORY_REGION_LIST ioctl and kvm_userspace_memory_region_list that will be used to pass multiple memory region updates at once to KVM. Signed-off-by: Emanuele Giuseppe Esposito --- linux-headers/linux/kvm.h | 20 ++++++++++++++++++++ 1 file changed, 20 insertions(+) diff --git a/linux-headers/linux/kvm.h b/linux-headers/linux/kvm.h index f089349149..671cdfb8de 100644 --- a/linux-headers/linux/kvm.h +++ b/linux-headers/linux/kvm.h @@ -103,6 +103,24 @@ struct kvm_userspace_memory_region { __u64 userspace_addr; /* start of the userspace allocated memory */ }; +/* for KVM_SET_USER_MEMORY_REGION_LIST */ +struct kvm_userspace_memory_region_entry { + __u32 slot; + __u32 flags; + __u64 guest_phys_addr; + __u64 memory_size; /* bytes */ + __u64 userspace_addr; /* start of the userspace allocated memory */ + __u8 invalidate_slot; + __u8 padding[31]; +}; + +/* for KVM_SET_USER_MEMORY_REGION_LIST */ +struct kvm_userspace_memory_region_list { + __u32 nent; + __u32 flags; + struct kvm_userspace_memory_region_entry entries[0]; +}; + /* * The bit 0 ~ bit 15 of kvm_memory_region::flags are visible for userspace, * other bits are reserved for kvm internal use which are defined in @@ -1426,6 +1444,8 @@ struct kvm_vfio_spapr_tce { struct kvm_userspace_memory_region) #define KVM_SET_TSS_ADDR _IO(KVMIO, 0x47) #define KVM_SET_IDENTITY_MAP_ADDR _IOW(KVMIO, 0x48, __u64) +#define KVM_SET_USER_MEMORY_REGION_LIST _IOW(KVMIO, 0x49, \ + struct kvm_userspace_memory_region_list) /* enable ucontrol for s390 */ struct kvm_s390_ucas_mapping {