Message ID | 20230220204736.2639601-49-dwmw2@infradead.org |
---|---|
State | New |
Headers | show
Return-Path: <qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org> 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=<UNKNOWN>) 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=bcCEwzYy; 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 4PLF9H5D20z23yV for <incoming@patchwork.ozlabs.org>; Tue, 21 Feb 2023 07:57:23 +1100 (AEDT) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from <qemu-devel-bounces@nongnu.org>) id 1pUD5M-0008DE-8f; Mon, 20 Feb 2023 15:48:32 -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 <BATV+9a3edebed2d8f15e5ac8+7120+infradead.org+dwmw2@casper.srs.infradead.org>) id 1pUD4m-0007Wo-Uq for qemu-devel@nongnu.org; Mon, 20 Feb 2023 15:47:56 -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 <BATV+9a3edebed2d8f15e5ac8+7120+infradead.org+dwmw2@casper.srs.infradead.org>) id 1pUD4j-0003Tz-Ou for qemu-devel@nongnu.org; Mon, 20 Feb 2023 15:47:56 -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=mjz5xJJIc3ZrlQRPIsMZJmwUUNEDrySpJjJsm/JhbgY=; b=bcCEwzYyeXwScnNhNzIN4wrQcC ThpdvWeNKAQ2tMPf+S8H/dKmCgkoT1tqQqOBK+c/cVC1vvCORZP5grmkpAXQVvFvaMSgjqdI2YF1d mreB1y6pC1olo7WGVLRVqONrSxEYqabvqsbVnNTNo7atq3CL6SCRNRtdtKF7hnJ8TSrcvhoVr//Mt 0uPQyaHEH0n2g5apikFE0y0/5hgDt2ZzMt3QRLlRqYq7eXnjJ1ANuMKza2YjG8IrLFbRA0DUYSxP+ V0vZxsFZ8i9c6K2gBo9Vse/vdgkjLjDbQic1MG9GQC91npTxbh4GwzFXtHO+qUqDUXDdGaz+nx38j x2lubSQw==; 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 1pUD4W-00C0qr-Kv; Mon, 20 Feb 2023 20:47:41 +0000 Received: from dwoodhou by i7.infradead.org with local (Exim 4.96 #2 (Red Hat Linux)) id 1pUD4W-00B4tl-21; Mon, 20 Feb 2023 20:47:40 +0000 From: David Woodhouse <dwmw2@infradead.org> To: Peter Maydell <peter.maydell@linaro.org>, qemu-devel@nongnu.org Cc: Paolo Bonzini <pbonzini@redhat.com>, Paul Durrant <paul@xen.org>, Joao Martins <joao.m.martins@oracle.com>, Ankur Arora <ankur.a.arora@oracle.com>, =?utf-8?q?Philippe_Mathieu-Daud?= =?utf-8?q?=C3=A9?= <philmd@linaro.org>, Thomas Huth <thuth@redhat.com>, =?utf-8?q?Alex_Benn=C3=A9e?= <alex.bennee@linaro.org>, Juan Quintela <quintela@redhat.com>, "Dr . David Alan Gilbert" <dgilbert@redhat.com>, Claudio Fontana <cfontana@suse.de>, Julien Grall <julien@xen.org>, "Michael S. Tsirkin" <mst@redhat.com>, Marcel Apfelbaum <marcel.apfelbaum@gmail.com>, armbru@redhat.com, Stefano Stabellini <sstabellini@kernel.org>, vikram.garhwal@amd.com Subject: [PATCH v12 48/60] i386/xen: Reserve Xen special pages for console, xenstore rings Date: Mon, 20 Feb 2023 20:47:24 +0000 Message-Id: <20230220204736.2639601-49-dwmw2@infradead.org> X-Mailer: git-send-email 2.39.0 In-Reply-To: <20230220204736.2639601-1-dwmw2@infradead.org> References: <20230220204736.2639601-1-dwmw2@infradead.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-SRS-Rewrite: SMTP reverse-path rewritten from <dwmw2@infradead.org> by casper.infradead.org. See http://www.infradead.org/rpr.html Received-SPF: none client-ip=2001:8b0:10b:1236::1; envelope-from=BATV+9a3edebed2d8f15e5ac8+7120+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: <qemu-devel.nongnu.org> List-Unsubscribe: <https://lists.nongnu.org/mailman/options/qemu-devel>, <mailto:qemu-devel-request@nongnu.org?subject=unsubscribe> List-Archive: <https://lists.nongnu.org/archive/html/qemu-devel> List-Post: <mailto:qemu-devel@nongnu.org> List-Help: <mailto:qemu-devel-request@nongnu.org?subject=help> List-Subscribe: <https://lists.nongnu.org/mailman/listinfo/qemu-devel>, <mailto:qemu-devel-request@nongnu.org?subject=subscribe> Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org |
Series |
Xen HVM support under KVM
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expand
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diff --git a/include/sysemu/kvm_xen.h b/include/sysemu/kvm_xen.h index 7fee28dec7..0b63bb81df 100644 --- a/include/sysemu/kvm_xen.h +++ b/include/sysemu/kvm_xen.h @@ -30,4 +30,12 @@ uint16_t kvm_xen_get_gnttab_max_frames(void); #define kvm_xen_has_cap(cap) (!!(kvm_xen_get_caps() & \ KVM_XEN_HVM_CONFIG_ ## cap)) +#define XEN_SPECIAL_AREA_ADDR 0xfeff8000UL +#define XEN_SPECIAL_AREA_SIZE 0x4000UL + +#define XEN_SPECIALPAGE_CONSOLE 0 +#define XEN_SPECIALPAGE_XENSTORE 1 + +#define XEN_SPECIAL_PFN(x) ((XEN_SPECIAL_AREA_ADDR >> TARGET_PAGE_BITS) + XEN_SPECIALPAGE_##x) + #endif /* QEMU_SYSEMU_KVM_XEN_H */ diff --git a/target/i386/kvm/xen-emu.c b/target/i386/kvm/xen-emu.c index a05dc2b928..7adb506692 100644 --- a/target/i386/kvm/xen-emu.c +++ b/target/i386/kvm/xen-emu.c @@ -23,6 +23,7 @@ #include "hw/pci/msi.h" #include "hw/i386/apic-msidef.h" +#include "hw/i386/e820_memory_layout.h" #include "hw/i386/kvm/xen_overlay.h" #include "hw/i386/kvm/xen_evtchn.h" #include "hw/i386/kvm/xen_gnttab.h" @@ -169,6 +170,15 @@ int kvm_xen_init(KVMState *s, uint32_t hypercall_msr) } s->xen_caps = xen_caps; + + /* Tell fw_cfg to notify the BIOS to reserve the range. */ + ret = e820_add_entry(XEN_SPECIAL_AREA_ADDR, XEN_SPECIAL_AREA_SIZE, + E820_RESERVED); + if (ret < 0) { + fprintf(stderr, "e820_add_entry() table is full\n"); + return ret; + } + return 0; }