From patchwork Wed Feb 1 14:31:13 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: David Woodhouse X-Patchwork-Id: 13124450 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 lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 3E6F9C636CD for ; Wed, 1 Feb 2023 14:40:56 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1pNEEG-0006yE-4p; Wed, 01 Feb 2023 09:36:52 -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 1pNE9j-0001P8-Li for qemu-devel@nongnu.org; Wed, 01 Feb 2023 09:32:12 -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 1pNE9g-00036R-QP for qemu-devel@nongnu.org; Wed, 01 Feb 2023 09:32:11 -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=lAUvqFRo64aNfjz3BDJmAUTZSnu6x1v+bZDL7P+YRZk=; b=T/K1rzKuAbSd2AXgSxXG0OkMRY gBkkW1hcUKqo31lctOt34KaRVBXq8iUMxsYsYVo8oNCvJZZqrkJmkh3mt9A5wql2RKDYgAJ4s2sn5 aGrJ5jgAGwmpsNsQefKCHqvA4J2x71PPBgqpW1SyhOFBuDdso7riczBH2p/Jk4TNBLEhkhyGqBzSc JHTosvMbC6pdq92SfigaY186HEFWZ7S5UDnd7qHv5zPBT7vGrrbxsg+P50FdhN2KkbvweKQHM9qdz ic588z0S36Pf+O4/p1CSZFA5wfXZu/qq/xkzlxcswq2ftMEhUsKEDBZ97llDQUUkiPRdw1Szh4QuB 36Yg8j3A==; 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 1pNE9P-00CMb5-SB; Wed, 01 Feb 2023 14:31:53 +0000 Received: from dwoodhou by i7.infradead.org with local (Exim 4.96 #2 (Red Hat Linux)) id 1pNE9P-007JrY-2r; Wed, 01 Feb 2023 14:31:51 +0000 From: David Woodhouse To: Peter Maydell , 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 , Julien Grall , "Michael S. Tsirkin" , Marcel Apfelbaum , armbru@redhat.com Subject: [PATCH v10 24/59] i386/xen: implement HYPERVISOR_event_channel_op Date: Wed, 1 Feb 2023 14:31:13 +0000 Message-Id: <20230201143148.1744093-25-dwmw2@infradead.org> X-Mailer: git-send-email 2.39.0 In-Reply-To: <20230201143148.1744093-1-dwmw2@infradead.org> References: <20230201143148.1744093-1-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+8c5eeea0684575598b25+7101+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+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org From: Joao Martins Signed-off-by: Joao Martins [dwmw2: Ditch event_channel_op_compat which was never available to HVM guests] Signed-off-by: David Woodhouse Reviewed-by: Paul Durrant --- target/i386/kvm/xen-emu.c | 25 +++++++++++++++++++++++++ 1 file changed, 25 insertions(+) diff --git a/target/i386/kvm/xen-emu.c b/target/i386/kvm/xen-emu.c index f5c8b6d20c..0bca370ea4 100644 --- a/target/i386/kvm/xen-emu.c +++ b/target/i386/kvm/xen-emu.c @@ -28,6 +28,7 @@ #include "hw/xen/interface/memory.h" #include "hw/xen/interface/hvm/hvm_op.h" #include "hw/xen/interface/vcpu.h" +#include "hw/xen/interface/event_channel.h" #include "xen-compat.h" @@ -588,6 +589,27 @@ static bool kvm_xen_hcall_vcpu_op(struct kvm_xen_exit *exit, X86CPU *cpu, return true; } +static bool kvm_xen_hcall_evtchn_op(struct kvm_xen_exit *exit, + int cmd, uint64_t arg) +{ + int err = -ENOSYS; + + switch (cmd) { + case EVTCHNOP_init_control: + case EVTCHNOP_expand_array: + case EVTCHNOP_set_priority: + /* We do not support FIFO channels at this point */ + err = -ENOSYS; + break; + + default: + return false; + } + + exit->u.hcall.result = err; + return true; +} + int kvm_xen_soft_reset(void) { CPUState *cpu; @@ -694,6 +716,9 @@ static bool do_kvm_xen_handle_exit(X86CPU *cpu, struct kvm_xen_exit *exit) case __HYPERVISOR_sched_op: return kvm_xen_hcall_sched_op(exit, cpu, exit->u.hcall.params[0], exit->u.hcall.params[1]); + case __HYPERVISOR_event_channel_op: + return kvm_xen_hcall_evtchn_op(exit, exit->u.hcall.params[0], + exit->u.hcall.params[1]); case __HYPERVISOR_vcpu_op: return kvm_xen_hcall_vcpu_op(exit, cpu, exit->u.hcall.params[0],