From nobody Thu Nov 28 10:35:22 2024 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=pass(p=none dis=none) header.from=kernel.org ARC-Seal: i=1; a=rsa-sha256; t=1693445271; cv=none; d=zohomail.com; s=zohoarc; b=nkm+wESs1lKhRWMTIwMsBGveRcPzws1NcZE6yoNhlEi0u0n8CjZDrqZPtxCNbh3hLbVgbI4pArxjcUCT4Q+sbfmgPmd4qkDznycZYQzKvQJCntS6I1ayDhyJrLkKZ01CEnbHU4PXGcKGdCVHfCQ9ZV0UCooq6V6XxNpHJUvhAz0= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1693445271; h=Content-Transfer-Encoding:Cc:Date:From:In-Reply-To:List-Subscribe:List-Post:List-Id:List-Archive:List-Help:List-Unsubscribe:MIME-Version:Message-ID:References:Sender:Subject:To; bh=CyDG/51dPrFdeo+GQdCAARJfpwj6aurqryADYmo/x7w=; b=RGkThLh1a6poFKr5BGLVwQmkW4OFM5FAG5/OHOrIealyD46/SSeMRCkMVaoupsZfwMcps1mjU3rB7gmnn9JNVShAVuR1frfiw7Bfxugs9UUkVKqGsQzctbEs6NnyxSh2FalnA4DIoJebgzzRty+0/BZXBStHL8Hob9PPnRU4MOw= ARC-Authentication-Results: i=1; mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=pass header.from= (p=none dis=none) Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1693445271701953.8176381802816; Wed, 30 Aug 2023 18:27:51 -0700 (PDT) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1qbWTI-0006RJ-Nt; Wed, 30 Aug 2023 21:27:44 -0400 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 1qbWTH-0006RA-Vf for qemu-devel@nongnu.org; Wed, 30 Aug 2023 21:27:43 -0400 Received: from sin.source.kernel.org ([2604:1380:40e1:4800::1]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1qbWTF-0006Z5-7J for qemu-devel@nongnu.org; Wed, 30 Aug 2023 21:27:43 -0400 Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits)) (No client certificate requested) by sin.source.kernel.org (Postfix) with ESMTPS id 40E46CE1F8A; Thu, 31 Aug 2023 01:27:38 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 9EBBFC433C8; Thu, 31 Aug 2023 01:27:35 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1693445256; bh=oHDyaB9hkzMzI1KW4yyUBD+EUdbWcBABAZvMrBiaYLQ=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=ToU6mC/HFoFpBcW6IAtOqDG/lZMRESAW5qkpwOcZNcFLcSpu4T4VfRP6rBjcK2d5Z 3MmzWv5DQuzs9ziFAdcE6PdydeZQdT27qqPBCwQUW5JPg87id6dz17BPa7CUsfe+yJ TNl+/+Dz47z5rnvA5+9H7vxr/0PW9MRV7KYVqEnb1R9/2F694/xQ+O8e1uTZJS76eo UZukpgJOHF7/2xknxgSyy5dsJA892nKlABisqJa3MIPmP6qfj2xz/hhL5+8x2L1cp4 q5b+Yuex2eDYN71w6UjAZy3bBn92ARJ8f1yRVIIAr5aBGQLWAgg2E3RePPsz4GiuRE BoN6RoHPB/uZw== From: Stefano Stabellini To: peter.maydell@linaro.org Cc: sstabellini@kernel.org, richard.henderson@linaro.org, qemu-devel@nongnu.org, vikram.garhwal@amd.com, Oleksandr Tyshchenko , Stefano Stabellini Subject: [PULL v2 2/2] xen_arm: Initialize RAM and add hi/low memory regions Date: Wed, 30 Aug 2023 18:27:31 -0700 Message-Id: <20230831012731.525739-2-sstabellini@kernel.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: References: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=2604:1380:40e1:4800::1; envelope-from=sstabellini@kernel.org; helo=sin.source.kernel.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, DKIMWL_WL_HIGH=-0.001, 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_PASS=-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+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @kernel.org) X-ZM-MESSAGEID: 1693445273388100010 Content-Type: text/plain; charset="utf-8" From: Oleksandr Tyshchenko In order to use virtio backends we need to initialize RAM for the xen-mapcache (which is responsible for mapping guest memory using foreign mapping) to work. Calculate and add hi/low memory regions based on machine->ram_size. Use the constants defined in public header arch-arm.h to be aligned with th= e xen toolstack. While using this machine, the toolstack should then pass real ram_size using "-m" arg. If "-m" is not given, create a QEMU machine without IOREQ and oth= er emulated devices like TPM and VIRTIO. This is done to keep this QEMU machine usable for /etc/init.d/xencommons. Signed-off-by: Oleksandr Tyshchenko Signed-off-by: Vikram Garhwal Reviewed-by: Stefano Stabellini Signed-off-by: Stefano Stabellini --- hw/arm/xen_arm.c | 45 +++++++++++++++++++++++++++++++++++++ include/hw/xen/xen_native.h | 8 +++++++ 2 files changed, 53 insertions(+) diff --git a/hw/arm/xen_arm.c b/hw/arm/xen_arm.c index 7393b37355..f83b983ec5 100644 --- a/hw/arm/xen_arm.c +++ b/hw/arm/xen_arm.c @@ -60,6 +60,8 @@ struct XenArmState { } cfg; }; =20 +static MemoryRegion ram_lo, ram_hi; + /* * VIRTIO_MMIO_DEV_SIZE is imported from tools/libs/light/libxl_arm.c unde= r Xen * repository. @@ -92,6 +94,39 @@ static void xen_create_virtio_mmio_devices(XenArmState *= xam) } } =20 +static void xen_init_ram(MachineState *machine) +{ + MemoryRegion *sysmem =3D get_system_memory(); + ram_addr_t block_len, ram_size[GUEST_RAM_BANKS]; + + if (machine->ram_size <=3D GUEST_RAM0_SIZE) { + ram_size[0] =3D machine->ram_size; + ram_size[1] =3D 0; + block_len =3D GUEST_RAM0_BASE + ram_size[0]; + } else { + ram_size[0] =3D GUEST_RAM0_SIZE; + ram_size[1] =3D machine->ram_size - GUEST_RAM0_SIZE; + block_len =3D GUEST_RAM1_BASE + ram_size[1]; + } + + memory_region_init_ram(&ram_memory, NULL, "xen.ram", block_len, + &error_fatal); + + memory_region_init_alias(&ram_lo, NULL, "xen.ram.lo", &ram_memory, + GUEST_RAM0_BASE, ram_size[0]); + memory_region_add_subregion(sysmem, GUEST_RAM0_BASE, &ram_lo); + DPRINTF("Initialized region xen.ram.lo: base 0x%llx size 0x%lx\n", + GUEST_RAM0_BASE, ram_size[0]); + + if (ram_size[1] > 0) { + memory_region_init_alias(&ram_hi, NULL, "xen.ram.hi", &ram_memory, + GUEST_RAM1_BASE, ram_size[1]); + memory_region_add_subregion(sysmem, GUEST_RAM1_BASE, &ram_hi); + DPRINTF("Initialized region xen.ram.hi: base 0x%llx size 0x%lx\n", + GUEST_RAM1_BASE, ram_size[1]); + } +} + void arch_handle_ioreq(XenIOState *state, ioreq_t *req) { hw_error("Invalid ioreq type 0x%x\n", req->type); @@ -141,6 +176,14 @@ static void xen_arm_init(MachineState *machine) =20 xam->state =3D g_new0(XenIOState, 1); =20 + if (machine->ram_size =3D=3D 0) { + DPRINTF("ram_size not specified. QEMU machine started without IORE= Q" + "(no emulated devices including Virtio)\n"); + return; + } + + xen_init_ram(machine); + xen_register_ioreq(xam->state, machine->smp.cpus, &xen_memory_listener= ); =20 xen_create_virtio_mmio_devices(xam); @@ -188,6 +231,8 @@ static void xen_arm_machine_class_init(ObjectClass *oc,= void *data) mc->init =3D xen_arm_init; mc->max_cpus =3D 1; mc->default_machine_opts =3D "accel=3Dxen"; + /* Set explicitly here to make sure that real ram_size is passed */ + mc->default_ram_size =3D 0; =20 #ifdef CONFIG_TPM object_class_property_add(oc, "tpm-base-addr", "uint64_t", diff --git a/include/hw/xen/xen_native.h b/include/hw/xen/xen_native.h index a4b1aa9e5d..5d2718261f 100644 --- a/include/hw/xen/xen_native.h +++ b/include/hw/xen/xen_native.h @@ -539,4 +539,12 @@ static inline int xendevicemodel_set_irq_level(xendevi= cemodel_handle *dmod, #define GUEST_VIRTIO_MMIO_SPI_LAST 43 #endif =20 +#if defined(__i386__) || defined(__x86_64__) +#define GUEST_RAM_BANKS 2 +#define GUEST_RAM0_BASE 0x40000000ULL /* 3GB of low RAM @ 1GB */ +#define GUEST_RAM0_SIZE 0xc0000000ULL +#define GUEST_RAM1_BASE 0x0200000000ULL /* 1016GB of RAM @ 8GB */ +#define GUEST_RAM1_SIZE 0xfe00000000ULL +#endif + #endif /* QEMU_HW_XEN_NATIVE_H */ --=20 2.25.1