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 bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (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 ECAC1CAC5AA for ; Sat, 20 Sep 2025 20:39:30 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-ID:Date:Subject:Cc:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=tjOKu/HRjV3NNXrS8Bk183zcK5TcvuJGyoukNR8knnY=; b=wzt1SGm3ayaIdP fsZnM3F2LmuReoK0sjoiDP18qKKcJBiBS1UUnh4KRzPzBtPM5glVHDW5apvDRpsBn7B43wrdfeS8M h3n/2pspzXjq1RGkAp2ys8HyMInfw8Z/sFfgtMlodDj5p4u40EXuL5HKJIm7rcSnbbfK9Sq2T6z7b 9qxUQ6xw/t9RCxxcf72QNaG/SAoUtdRdrDrfaoJmunu+poOI6Gn7WlltBplQw/fcR376InfCK472T fx1RHNAgO7wCehDkVxZRYBGDB2bf5yIlvGeFFCTkTsT/aHDo7eLqR2DRV/t7zYfugmKDRDWyrvPTl daEJuYn+kA03l5xQ+7/Q==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98.2 #2 (Red Hat Linux)) id 1v04Mf-00000005u24-09gS; Sat, 20 Sep 2025 20:39:25 +0000 Received: from mail-il1-x134.google.com ([2607:f8b0:4864:20::134]) by bombadil.infradead.org with esmtps (Exim 4.98.2 #2 (Red Hat Linux)) id 1v04MX-00000005tkH-1Spp for linux-riscv@lists.infradead.org; Sat, 20 Sep 2025 20:39:18 +0000 Received: by mail-il1-x134.google.com with SMTP id e9e14a558f8ab-4249327319dso8145715ab.1 for ; Sat, 20 Sep 2025 13:39:17 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ventanamicro.com; s=google; t=1758400756; x=1759005556; darn=lists.infradead.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=EDiaVjHF4kERpiNA+aqN0eX91N+wRKnw/AH6MzFfvy4=; b=pQARDDUgtF3U5DQBVpScECDrgbbj2sNkFx6uMoWi6M7rEdDQHZU2gQNzeH6kPDvGso NsBlwgTNKUcvDuqL6tqhVygIIz+0iVyIcfXA21YOhdPYSeXnM5ttb0BXCym1HKOX/jyO eqqj97MjB9NeZORWUCqqRa10c3tTSzl+cRdsYAc0f9EP5A4NBGFUWgEJ4l+W+jxK3Opl vgFbF+J0PFlnHzSfwo1nobXuLL/CwmkU/c62EDej2U3zsu/+MweZIvPZeQfGurX+0ACy unkEiwPRICzaQ+hzFDDTy74Iocp7wTv2rTRC620OyPEUN52A3GAFjoq4OqDlOXKzBwty eQEA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1758400756; x=1759005556; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=EDiaVjHF4kERpiNA+aqN0eX91N+wRKnw/AH6MzFfvy4=; b=KFsYdmiwtkjD8lSg9YHNAStMGDZLTDve7xZtF1s01CzczBJlbuVNmTzcD5MVWwRTRf 0tGcU4lakNQLZtp+ZUAeutooc9qNRNsuiKNgQVN3TDzC0QcSFkE+SEl8eXNMSLQHrAGP uPvW90YRvEEiQiglWHUM1RkDMOpDoTZqdXdcwW1V39YZn4U89naZSNf03zDiK69yXh2V rFFxOzsyYguCD8+qhhABExVVBEAvtOdtleTgZPAiH53DHrCjAHdFS0akzHJuiAZpJpEW kAUnlOhMLQ479Vx08q+jNOagRtTUmSW1k5lajwb7cNtYA95jiodCBiuuDcN+7BlwItvV jGWw== X-Forwarded-Encrypted: i=1; AJvYcCUEHKduq5gnmHnbgsPxr1AOX9c8T8OdmLi3WnV2ZewcXN27aLk6NAEcexyMMC7JsjdSe+hMAG03QaCrIA==@lists.infradead.org X-Gm-Message-State: AOJu0YybF7398zbfvP6FOrJe0N+TiyW4njnBIi6FoLMI+I01+OmnwAzE wNpMRfKYM691FqqAD0OSUql3YApbMWZTaEb1OdRYsXH6Fbrnw8EjLrbGJCXyQWXjOYI= X-Gm-Gg: ASbGnctraOcX7BssokigzWui0xDWnq5CBCjxFThsVyDjqcO9oh95tqG3TxVF9GJ+4aE dtO0SsL49LTW7CifLYGbxt0gaJmlUcAgt7eeQAwz+sSuRKPIyCwpPBFVyTX7yyked8QdJBDXK47 C+/d5YowcZkTFodS43UQtly2hwaV97BUICwAvfoPyr/oBqyMuqhql2oRMTk28DUCJEVBUDJm55i ko6DWMBluSDZrUwdFfmgpBzQLzbaJqqu/F5R/abZGslI3RARM7YtiJc/GjD3Smrr6KqySB5T7tZ l5fC7cQLKwkKf5Fjcbu+bBvLu6HrCQIwlr+skYpAVwMAqMXcDs4R2aGrE15u4r5temNsVjndIGk 2DvxIhY9Dxp2C4SYk3c7PoLWH X-Google-Smtp-Source: AGHT+IG8Raz8xeq0QgKszu3pyBicegyYf16hU26G0T5WrFouzicPpKiOvFexp2tE8Gc55HnrfGmbkg== X-Received: by 2002:a05:6e02:1947:b0:424:80f2:299 with SMTP id e9e14a558f8ab-424819955bbmr133419975ab.27.1758400756210; Sat, 20 Sep 2025 13:39:16 -0700 (PDT) Received: from localhost ([140.82.166.162]) by smtp.gmail.com with ESMTPSA id e9e14a558f8ab-424804ec921sm30642665ab.43.2025.09.20.13.39.15 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sat, 20 Sep 2025 13:39:15 -0700 (PDT) From: Andrew Jones To: iommu@lists.linux.dev, kvm-riscv@lists.infradead.org, kvm@vger.kernel.org, linux-riscv@lists.infradead.org, linux-kernel@vger.kernel.org Cc: jgg@nvidia.com, zong.li@sifive.com, tjeznach@rivosinc.com, joro@8bytes.org, will@kernel.org, robin.murphy@arm.com, anup@brainfault.org, atish.patra@linux.dev, tglx@linutronix.de, alex.williamson@redhat.com, paul.walmsley@sifive.com, palmer@dabbelt.com, alex@ghiti.fr Subject: [RFC PATCH v2 18/18] DO NOT UPSTREAM: RISC-V: KVM: Workaround kvm_riscv_gstage_ioremap() bug Date: Sat, 20 Sep 2025 15:39:08 -0500 Message-ID: <20250920203851.2205115-38-ajones@ventanamicro.com> X-Mailer: git-send-email 2.49.0 In-Reply-To: <20250920203851.2205115-20-ajones@ventanamicro.com> References: <20250920203851.2205115-20-ajones@ventanamicro.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20250920_133917_434631_FCF46D58 X-CRM114-Status: GOOD ( 10.20 ) X-BeenThere: linux-riscv@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-riscv" Errors-To: linux-riscv-bounces+linux-riscv=archiver.kernel.org@lists.infradead.org Workaround a bug that breaks guest booting with device assignment that was introduced with commit 9bca8be646e0 ("RISC-V: KVM: Fix pte settings within kvm_riscv_gstage_ioremap()") --- arch/riscv/kvm/mmu.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/riscv/kvm/mmu.c b/arch/riscv/kvm/mmu.c index 525fb5a330c0..994f18b92143 100644 --- a/arch/riscv/kvm/mmu.c +++ b/arch/riscv/kvm/mmu.c @@ -56,7 +56,7 @@ int kvm_riscv_mmu_ioremap(struct kvm *kvm, gpa_t gpa, phys_addr_t hpa, end = (gpa + size + PAGE_SIZE - 1) & PAGE_MASK; pfn = __phys_to_pfn(hpa); - prot = pgprot_noncached(PAGE_WRITE); + prot = pgprot_noncached(__pgprot(_PAGE_PRESENT | _PAGE_ACCESSED | _PAGE_READ | _PAGE_WRITE)); for (addr = gpa; addr < end; addr += PAGE_SIZE) { map.addr = addr; -- 2.49.0 _______________________________________________ linux-riscv mailing list linux-riscv@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-riscv