From patchwork Mon Dec 5 17:31:30 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: David Woodhouse X-Patchwork-Id: 1712397 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@legolas.ozlabs.org Authentication-Results: legolas.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=nongnu.org (client-ip=209.51.188.17; helo=lists.gnu.org; envelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org; receiver=) Authentication-Results: legolas.ozlabs.org; dkim=fail reason="signature verification failed" (2048-bit key; secure) header.d=infradead.org header.i=@infradead.org header.a=rsa-sha256 header.s=desiato.20200630 header.b=PkCp/C67; dkim-atps=neutral Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-ECDSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by legolas.ozlabs.org (Postfix) with ESMTPS id 4NQrGw4ZGRz23p1 for ; Tue, 6 Dec 2022 04:32:55 +1100 (AEDT) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1p2FKF-0007oB-V6; Mon, 05 Dec 2022 12:32:20 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1p2FKD-0007nw-G4 for qemu-devel@nongnu.org; Mon, 05 Dec 2022 12:32:17 -0500 Received: from desiato.infradead.org ([2001:8b0:10b:1:d65d:64ff:fe57:4e05]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1p2FJx-0007PO-M6 for qemu-devel@nongnu.org; Mon, 05 Dec 2022 12:32:17 -0500 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=desiato.20200630; h=Sender:Content-Transfer-Encoding: MIME-Version:References:In-Reply-To:Message-Id:Date:Subject:Cc:To:From: Reply-To:Content-Type:Content-ID:Content-Description; bh=CmtzMD9qyMJ/O9WiM0u8rK7WPAHLSUq3FiGW7nZ6FSc=; b=PkCp/C67V8HOElY4dn2h3YBxTh 7bbn6qQ7cf5erheZ6/Yct9pLrtYl/RtV4he62qIcC3BsH1b7BA4H+fLd7ADunllYAzcxmNRFRiStT N4zokszIYX7K23ssXqtcOFypV+LjyYXKqUI1E+vzsNTe0i0+J/R8h0GcTFo7QLNyOvB+DvY4rwl/k TX9yejz9SMjEvevOUm+UCMciNxvQ6I1gev8C6EWXA5WvLXx93iNUn3MGE5YACUzVM6KSFLssZrNM1 Qs5AvaQy4feZ6h4ZvDDYNIEOKGDIm/HOumG9KjQ4n3cmhxko7MPATpHMbb9FdEYmLAqKhDEZwRMXp NyeUGSPQ==; Received: from i7.infradead.org ([2001:8b0:10b:1:21e:67ff:fecb:7a92]) by desiato.infradead.org with esmtpsa (Exim 4.94.2 #2 (Red Hat Linux)) id 1p2FJo-007fzP-VU; Mon, 05 Dec 2022 17:31:53 +0000 Received: from dwoodhou by i7.infradead.org with local (Exim 4.94.2 #2 (Red Hat Linux)) id 1p2FJo-002YKX-ND; Mon, 05 Dec 2022 17:31:52 +0000 From: David Woodhouse To: qemu-devel@nongnu.org Cc: Paolo Bonzini , Paul Durrant , Joao Martins , Ankur Arora Subject: [RFC PATCH 14/21] i386/xen: implement HYPERVISOR_vcpu_op Date: Mon, 5 Dec 2022 17:31:30 +0000 Message-Id: <20221205173137.607044-15-dwmw2@infradead.org> X-Mailer: git-send-email 2.35.3 In-Reply-To: <20221205173137.607044-1-dwmw2@infradead.org> References: <20221205173137.607044-1-dwmw2@infradead.org> MIME-Version: 1.0 X-SRS-Rewrite: SMTP reverse-path rewritten from by desiato.infradead.org. See http://www.infradead.org/rpr.html Received-SPF: none client-ip=2001:8b0:10b:1:d65d:64ff:fe57:4e05; envelope-from=BATV+0f5700dbc1736e95d806+7043+infradead.org+dwmw2@desiato.srs.infradead.org; helo=desiato.infradead.org X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, SPF_HELO_NONE=0.001, SPF_NONE=0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org From: Joao Martins This is simply when guest tries to register a vcpu_info and since vcpu_info placement is optional in the minimum ABI therefore we can just fail with -ENOSYS Signed-off-by: Joao Martins Signed-off-by: David Woodhouse --- target/i386/xen.c | 19 +++++++++++++++++++ 1 file changed, 19 insertions(+) diff --git a/target/i386/xen.c b/target/i386/xen.c index 38d4cae3d0..61c9959981 100644 --- a/target/i386/xen.c +++ b/target/i386/xen.c @@ -18,6 +18,7 @@ #include "standard-headers/xen/version.h" #include "standard-headers/xen/memory.h" #include "standard-headers/xen/hvm/hvm_op.h" +#include "standard-headers/xen/vcpu.h" #define PAGE_OFFSET 0xffffffff80000000UL #define PAGE_SHIFT 12 @@ -196,6 +197,21 @@ static int kvm_xen_hcall_hvm_op(struct kvm_xen_exit *exit, return HCALL_ERR; } +static int kvm_xen_hcall_vcpu_op(struct kvm_xen_exit *exit, + int cmd, uint64_t arg) +{ + switch (cmd) { + case VCPUOP_register_vcpu_info: { + /* no vcpu info placement for now */ + exit->u.hcall.result = -ENOSYS; + return 0; + } + } + + exit->u.hcall.result = -ENOSYS; + return HCALL_ERR; +} + static int __kvm_xen_handle_exit(X86CPU *cpu, struct kvm_xen_exit *exit) { uint16_t code = exit->u.hcall.input; @@ -206,6 +222,9 @@ static int __kvm_xen_handle_exit(X86CPU *cpu, struct kvm_xen_exit *exit) } switch (code) { + case __HYPERVISOR_vcpu_op: + return kvm_xen_hcall_vcpu_op(exit, exit->u.hcall.params[0], + exit->u.hcall.params[1]); case __HYPERVISOR_hvm_op: return kvm_xen_hcall_hvm_op(exit, exit->u.hcall.params[0], exit->u.hcall.params[1]);