From patchwork Fri Dec 9 09:56:05 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: David Woodhouse X-Patchwork-Id: 1714126 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=casper.20170209 header.b=uxcd4XjP; 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 4NT5zl6nKrz23pD for ; Fri, 9 Dec 2022 20:57:38 +1100 (AEDT) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1p3a86-0002eC-5e; Fri, 09 Dec 2022 04:57:18 -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 1p3a7S-0002Ss-UO for qemu-devel@nongnu.org; Fri, 09 Dec 2022 04:56:41 -0500 Received: from casper.infradead.org ([2001:8b0:10b:1236::1]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1p3a7Q-0006qh-Gi for qemu-devel@nongnu.org; Fri, 09 Dec 2022 04:56:38 -0500 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=casper.20170209; 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=lIlMBcPXH64zUVREtRgY4luMAzD6i7RUuD8FuaojD9k=; b=uxcd4XjPooP927bsK7Vw8yf/UE IfnuKD5QtCw9LWYQioIHi+FRmb68Rj0sIl41C1osgFsSrQPXrVMrHUxke3SrOqseY4Igy8VfdmIq8 ktQ6Os2xiIrmnWhKTmNMhpV+4rvC7lT6L/+D6dF/CO9Ei4tGkElVNId5EDS/GK1LwRT/l+ohkPzhm gIdGlyEysjUAIN/O/lMEwfMnkCw0otxyM4j0a+tDZJ368ekTyG6+P9cvYofAKJa6oC7/W9dne80oO x7XMxUYvvUXmofWPSAqVS86cRsscfMbO6PpAJjhWdfgd7A66827M1eL24GxIWbscmCatXkXJjZODK a2Liu0tQ==; Received: from i7.infradead.org ([2001:8b0:10b:1:21e:67ff:fecb:7a92]) by casper.infradead.org with esmtpsa (Exim 4.94.2 #2 (Red Hat Linux)) id 1p3a7G-007tiW-HC; Fri, 09 Dec 2022 09:56:26 +0000 Received: from dwoodhou by i7.infradead.org with local (Exim 4.94.2 #2 (Red Hat Linux)) id 1p3a78-002tZ8-4Z; Fri, 09 Dec 2022 09:56:18 +0000 From: David Woodhouse To: qemu-devel@nongnu.org Cc: Paolo Bonzini , Paul Durrant , Joao Martins , Ankur Arora , =?utf-8?q?Philippe_Mathieu-Daud?= =?utf-8?q?=C3=A9?= , Thomas Huth , =?utf-8?q?Alex_Benn=C3=A9e?= , Juan Quintela , "Dr . David Alan Gilbert" , Claudio Fontana Subject: [RFC PATCH v2 15/22] i386/xen: implement HYPERVISOR_vcpu_op Date: Fri, 9 Dec 2022 09:56:05 +0000 Message-Id: <20221209095612.689243-16-dwmw2@infradead.org> X-Mailer: git-send-email 2.35.3 In-Reply-To: <20221209095612.689243-1-dwmw2@infradead.org> References: <20221209095612.689243-1-dwmw2@infradead.org> MIME-Version: 1.0 X-SRS-Rewrite: SMTP reverse-path rewritten from by casper.infradead.org. See http://www.infradead.org/rpr.html Received-SPF: none client-ip=2001:8b0:10b:1236::1; envelope-from=BATV+00235e7d7be18c3eb674+7047+infradead.org+dwmw2@casper.srs.infradead.org; helo=casper.infradead.org X-Spam_score_int: -43 X-Spam_score: -4.4 X-Spam_bar: ---- X-Spam_report: (-4.4 / 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, RCVD_IN_DNSWL_MED=-2.3, 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 | 25 +++++++++++++++++++++++++ 1 file changed, 25 insertions(+) diff --git a/target/i386/xen.c b/target/i386/xen.c index 2847b4f864..9d1daadee1 100644 --- a/target/i386/xen.c +++ b/target/i386/xen.c @@ -19,6 +19,7 @@ #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" static int kvm_gva_rw(CPUState *cs, uint64_t gva, void *_buf, size_t sz, bool is_write) @@ -194,6 +195,25 @@ static bool kvm_xen_hcall_hvm_op(struct kvm_xen_exit *exit, } } +static bool kvm_xen_hcall_vcpu_op(struct kvm_xen_exit *exit, X86CPU *cpu, + int cmd, int vcpu_id, uint64_t arg) +{ + int err; + + switch (cmd) { + case VCPUOP_register_vcpu_info: + /* no vcpu info placement for now */ + err = -ENOSYS; + break; + + default: + return false; + } + + exit->u.hcall.result = err; + return true; +} + static bool __kvm_xen_handle_exit(X86CPU *cpu, struct kvm_xen_exit *exit) { uint16_t code = exit->u.hcall.input; @@ -204,6 +224,11 @@ static bool __kvm_xen_handle_exit(X86CPU *cpu, struct kvm_xen_exit *exit) } switch (code) { + case __HYPERVISOR_vcpu_op: + return kvm_xen_hcall_vcpu_op(exit, cpu, + exit->u.hcall.params[0], + exit->u.hcall.params[1], + exit->u.hcall.params[2]); case __HYPERVISOR_hvm_op: return kvm_xen_hcall_hvm_op(exit, exit->u.hcall.params[0], exit->u.hcall.params[1]);