From nobody Fri Sep 20 15:32:53 2024 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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id DE01AC0015E for ; Thu, 27 Jul 2023 08:04:40 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233872AbjG0IEi (ORCPT ); Thu, 27 Jul 2023 04:04:38 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:38518 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233741AbjG0ICy (ORCPT ); Thu, 27 Jul 2023 04:02:54 -0400 Received: from mailgw02.mediatek.com (unknown [210.61.82.184]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 530372D7D; Thu, 27 Jul 2023 01:00:24 -0700 (PDT) X-UUID: 9f2f38702c5311eeb20a276fd37b9834-20230727 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=mediatek.com; s=dk; h=Content-Type:MIME-Version:References:In-Reply-To:Message-ID:Date:Subject:CC:To:From; bh=dlwzZMYRKarw4YgR99j1yMBfKkLE3s947ec5MMti9Wo=; b=Tro6WKv9SPt7yQFeNZ/Oozsxg6l/i/yI2ckIFm6irDNPyIXc4Si9pBAb1AdE9qNarflH/q/fk8ZEC9ErEwAtQlqsTbKA5Hwx1pRK5tg3teGzRxabSf4AC0woL3ZewlaJmnOrPSVYc9+8kmNCLRcLr7Dr3ZCKiDBcZx2BvTZfers=; X-CID-P-RULE: Release_Ham X-CID-O-INFO: VERSION:1.1.29,REQID:06cb67a4-7961-4b08-86be-ab4d625fc1b5,IP:0,U RL:0,TC:0,Content:-25,EDM:0,RT:0,SF:95,FILE:0,BULK:0,RULE:Release_Ham,ACTI ON:release,TS:70 X-CID-INFO: VERSION:1.1.29,REQID:06cb67a4-7961-4b08-86be-ab4d625fc1b5,IP:0,URL :0,TC:0,Content:-25,EDM:0,RT:0,SF:95,FILE:0,BULK:0,RULE:Spam_GS981B3D,ACTI ON:quarantine,TS:70 X-CID-META: VersionHash:e7562a7,CLOUDID:594cd9b3-a467-4aa9-9e04-f584452e3794,B ulkID:230727160017C2IBS54M,BulkQuantity:2,Recheck:0,SF:28|17|19|48|38|29,T C:nil,Content:0,EDM:-3,IP:nil,URL:11|1,File:nil,Bulk:40,QS:nil,BEC:nil,COL :0,OSI:0,OSA:0,AV:0,LES:1,SPR:NO,DKR:0,DKP:0,BRR:0,BRE:0 X-CID-BVR: 0,NGT X-CID-BAS: 0,NGT,0,_ X-CID-FACTOR: TF_CID_SPAM_FAS,TF_CID_SPAM_FSD,TF_CID_SPAM_ULN,TF_CID_SPAM_SNR, TF_CID_SPAM_SDM,TF_CID_SPAM_ASC X-UUID: 9f2f38702c5311eeb20a276fd37b9834-20230727 Received: from mtkmbs13n1.mediatek.inc [(172.21.101.193)] by mailgw02.mediatek.com (envelope-from ) (Generic MTA with TLSv1.2 ECDHE-RSA-AES256-GCM-SHA384 256/256) with ESMTP id 1584944357; Thu, 27 Jul 2023 16:00:15 +0800 Received: from mtkmbs11n2.mediatek.inc (172.21.101.187) by mtkmbs13n1.mediatek.inc (172.21.101.193) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.1118.26; Thu, 27 Jul 2023 16:00:14 +0800 Received: from mtksdccf07.mediatek.inc (172.21.84.99) by mtkmbs11n2.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.2.1118.26 via Frontend Transport; Thu, 27 Jul 2023 16:00:14 +0800 From: Yi-De Wu To: Yingshiuan Pan , Ze-Yu Wang , Yi-De Wu , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Jonathan Corbet , Catalin Marinas , Will Deacon , Arnd Bergmann , Matthias Brugger , AngeloGioacchino Del Regno CC: , , , , , , David Bradil , Trilok Soni , Ivan Tseng , Jade Shih , My Chuang , Shawn Hsiao , PeiLun Suei , Liju Chen , Willix Yeh Subject: [PATCH v5 08/12] virt: geniezone: Add memory region support Date: Thu, 27 Jul 2023 16:00:01 +0800 Message-ID: <20230727080005.14474-9-yi-de.wu@mediatek.com> X-Mailer: git-send-email 2.18.0 In-Reply-To: <20230727080005.14474-1-yi-de.wu@mediatek.com> References: <20230727080005.14474-1-yi-de.wu@mediatek.com> MIME-Version: 1.0 X-MTK: N Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" From: "Jerry Wang" Hypervisor might need to know the precise purpose of each memory region, so that it can provide specific memory protection. We add a new uapi to pass address and size of a memory region and its purpose. Signed-off-by: Jerry Wang Signed-off-by: Liju-clr Chen Signed-off-by: Yi-De Wu --- arch/arm64/geniezone/gzvm_arch_common.h | 2 ++ arch/arm64/geniezone/vm.c | 10 ++++++++++ drivers/virt/geniezone/gzvm_vm.c | 7 +++++++ include/linux/gzvm_drv.h | 3 +++ 4 files changed, 22 insertions(+) diff --git a/arch/arm64/geniezone/gzvm_arch_common.h b/arch/arm64/geniezone= /gzvm_arch_common.h index 051d8f49a1df..321f5dbcd616 100644 --- a/arch/arm64/geniezone/gzvm_arch_common.h +++ b/arch/arm64/geniezone/gzvm_arch_common.h @@ -22,6 +22,7 @@ enum { GZVM_FUNC_PROBE =3D 12, GZVM_FUNC_ENABLE_CAP =3D 13, GZVM_FUNC_INFORM_EXIT =3D 14, + GZVM_FUNC_MEMREGION_PURPOSE =3D 15, NR_GZVM_FUNC, }; =20 @@ -44,6 +45,7 @@ enum { #define MT_HVC_GZVM_PROBE GZVM_HCALL_ID(GZVM_FUNC_PROBE) #define MT_HVC_GZVM_ENABLE_CAP GZVM_HCALL_ID(GZVM_FUNC_ENABLE_CAP) #define MT_HVC_GZVM_INFORM_EXIT GZVM_HCALL_ID(GZVM_FUNC_INFORM_EXIT) +#define MT_HVC_GZVM_MEMREGION_PURPOSE GZVM_HCALL_ID(GZVM_FUNC_MEMREGION_PU= RPOSE) =20 #define GIC_V3_NR_LRS 16 =20 diff --git a/arch/arm64/geniezone/vm.c b/arch/arm64/geniezone/vm.c index 2df321f13057..17327081eb27 100644 --- a/arch/arm64/geniezone/vm.c +++ b/arch/arm64/geniezone/vm.c @@ -109,6 +109,16 @@ int gzvm_arch_destroy_vm(u16 vm_id) 0, 0, &res); } =20 +int gzvm_arch_memregion_purpose(struct gzvm *gzvm, + struct gzvm_userspace_memory_region *mem) +{ + struct arm_smccc_res res; + + return gzvm_hypcall_wrapper(MT_HVC_GZVM_MEMREGION_PURPOSE, gzvm->vm_id, + mem->guest_phys_addr, mem->memory_size, + mem->flags, 0, 0, 0, &res); +} + static int gzvm_vm_arch_enable_cap(struct gzvm *gzvm, struct gzvm_enable_cap *cap, struct arm_smccc_res *res) diff --git a/drivers/virt/geniezone/gzvm_vm.c b/drivers/virt/geniezone/gzvm= _vm.c index 60bd017e41fa..a1cf970e4c91 100644 --- a/drivers/virt/geniezone/gzvm_vm.c +++ b/drivers/virt/geniezone/gzvm_vm.c @@ -234,6 +234,7 @@ static int gzvm_vm_ioctl_set_memory_region(struct gzvm *gzvm, struct gzvm_userspace_memory_region *mem) { + int ret; struct vm_area_struct *vma; struct gzvm_memslot *memslot; unsigned long size; @@ -258,6 +259,12 @@ gzvm_vm_ioctl_set_memory_region(struct gzvm *gzvm, memslot->vma =3D vma; memslot->flags =3D mem->flags; memslot->slot_id =3D mem->slot; + + ret =3D gzvm_arch_memregion_purpose(gzvm, mem); + if (ret) { + pr_err("Failed to config memory region for the specified purpose\n"); + return -EFAULT; + } return register_memslot_addr_range(gzvm, memslot); } =20 diff --git a/include/linux/gzvm_drv.h b/include/linux/gzvm_drv.h index d2985e4df4a0..369c3df6c0b5 100644 --- a/include/linux/gzvm_drv.h +++ b/include/linux/gzvm_drv.h @@ -141,6 +141,9 @@ void gzvm_drv_irqfd_exit(void); int gzvm_vm_irqfd_init(struct gzvm *gzvm); void gzvm_vm_irqfd_release(struct gzvm *gzvm); =20 +int gzvm_arch_memregion_purpose(struct gzvm *gzvm, + struct gzvm_userspace_memory_region *mem); + int gzvm_init_ioeventfd(struct gzvm *gzvm); int gzvm_ioeventfd(struct gzvm *gzvm, struct gzvm_ioeventfd *args); bool gzvm_ioevent_write(struct gzvm_vcpu *vcpu, __u64 addr, int len, --=20 2.18.0