From mboxrd@z Thu Jan 1 00:00:00 1970 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 59D71C4167B for ; Fri, 30 Dec 2022 12:13:27 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1pBEGB-0008EO-9U; Fri, 30 Dec 2022 07:13:15 -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 1pBEFv-0007og-NW for qemu-devel@nongnu.org; Fri, 30 Dec 2022 07:12:59 -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 1pBEFo-0004y7-Ra for qemu-devel@nongnu.org; Fri, 30 Dec 2022 07:12:59 -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=kd6mo0e0s76+YxzY+/jef9iynUcXRlmAcVIUMMORSLE=; b=H5BWafs4DPca8OM19OdpCevLSq lVaiUfoqtMsu1Ij/XZzDzlCit8utLdvwB/Ex0bbta56Y+Wh95hjfefteIOO+OBjJARUr9NgKmUbhP q03Xp3jZ+7PT8eqfyObhnupyK6XS9B9vUaSH4XAopmwu65rLy5mOwviJ2qQysj88lH1uciqpDDdF/ cy8KsK1/PL6QSqQkSbXQ1VsJdrYW9o9fhbWjM4o1yNrHLBT9BSmM/cF3QH8KJUp2aYrELHc9YlsEz V2B0ijhIvRdMWxXidL26zIIrzXTLfG8Aacu3Pf7Y7m74DZEXwzJ0djM63iUiX5yFRLaguEAKCy5P7 5378JPng==; 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 1pBEFl-00Ac8h-Pk; Fri, 30 Dec 2022 12:12:50 +0000 Received: from dwoodhou by i7.infradead.org with local (Exim 4.94.2 #2 (Red Hat Linux)) id 1pBEFa-005O0q-IN; Fri, 30 Dec 2022 12:12:38 +0000 From: David Woodhouse To: qemu-devel@nongnu.org Cc: Paolo Bonzini , Paul Durrant , Joao Martins , Ankur Arora , =?UTF-8?q?Philippe=20Mathieu-Daud=C3=A9?= , Thomas Huth , =?UTF-8?q?Alex=20Benn=C3=A9e?= , Juan Quintela , "Dr . David Alan Gilbert" , Claudio Fontana , Julien Grall Subject: [RFC PATCH v5 49/52] i386/xen: handle HVMOP_get_param Date: Fri, 30 Dec 2022 12:12:32 +0000 Message-Id: <20221230121235.1282915-50-dwmw2@infradead.org> X-Mailer: git-send-email 2.35.3 In-Reply-To: <20221230121235.1282915-1-dwmw2@infradead.org> References: <20221230121235.1282915-1-dwmw2@infradead.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 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+1132f1bfe572585e6c7f+7068+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 Which is used to fetch xenstore PFN and port to be used by the guest. This is preallocated by the toolstack when guest will just read those and use it straight away. Signed-off-by: Joao Martins Signed-off-by: David Woodhouse --- target/i386/kvm/xen-emu.c | 39 +++++++++++++++++++++++++++++++++++++++ 1 file changed, 39 insertions(+) diff --git a/target/i386/kvm/xen-emu.c b/target/i386/kvm/xen-emu.c index 83ab96724e..08db4c0d9b 100644 --- a/target/i386/kvm/xen-emu.c +++ b/target/i386/kvm/xen-emu.c @@ -707,6 +707,42 @@ out: return true; } +static bool handle_get_param(struct kvm_xen_exit *exit, X86CPU *cpu, + uint64_t arg) +{ + CPUState *cs = CPU(cpu); + struct xen_hvm_param hp; + int err = 0; + + /* No need for 32/64 compat handling */ + qemu_build_assert(sizeof(hp) == 16); + + if (kvm_copy_from_gva(cs, arg, &hp, sizeof(hp))) { + err = -EFAULT; + goto out; + } + + if (hp.domid != DOMID_SELF && hp.domid != xen_domid) { + err = -ESRCH; + goto out; + } + + switch (hp.index) { + case HVM_PARAM_STORE_PFN: + hp.value = XEN_SPECIAL_PFN(XENSTORE); + break; + default: + return false; + } + + if (kvm_copy_to_gva(cs, arg, &hp, sizeof(hp))) { + err = -EFAULT; + } +out: + exit->u.hcall.result = err; + return true; +} + static int kvm_xen_hcall_evtchn_upcall_vector(struct kvm_xen_exit *exit, X86CPU *cpu, uint64_t arg) { @@ -751,6 +787,9 @@ static bool kvm_xen_hcall_hvm_op(struct kvm_xen_exit *exit, X86CPU *cpu, case HVMOP_set_param: return handle_set_param(exit, cpu, arg); + case HVMOP_get_param: + return handle_get_param(exit, cpu, arg); + default: return false; } -- 2.35.3