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 E143CC5CFC1 for ; Tue, 11 Aug 2026 23:03:40 +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: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:In-Reply-To:References: List-Owner; bh=dH+FfOemJcvTlfKMf1EiRNBkuYBU+RKJ3cHQCYFBtEU=; b=qmYGR6+u7A4W9Q zhH3lKvbgs25psENvwrcPusiWbrOd7XhX4DRqcXL1nll0rzKxjRCOK83OVweLBGOrEVpVTUTS0CFT iKYOVlP+KBhF+BcJITTfWc7gG/EbcZgNwVwRJlqsDc7dVcaeqPDiuK8GknmqtEa8aVwBZ4mxZ9tRm JYKaUQN9Cng092TffKeM4RnTqRJz8isnjI9Koy2TSAapYH3l6I2ERZqc4JorSSoKkw7VY+5zVvjMK wLm0hOLDEX5smIIhdbeL3gHtEtfDuliqWRUoLAlyfKVZ8++GLphpmxLxGlXl3Pgdd69zMmXv+fIsX grpUIFeDNKD4ZMkAbwlA==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.99.1 #2 (Red Hat Linux)) id 1wtvVT-0000000F3cC-3tab; Tue, 11 Aug 2026 23:03:39 +0000 Received: from out-186.mta0.migadu.com ([91.218.175.186]) by bombadil.infradead.org with esmtps (Exim 4.99.1 #2 (Red Hat Linux)) id 1wtvVQ-0000000F3bm-1R6G for kvm-riscv@lists.infradead.org; Tue, 11 Aug 2026 23:03:38 +0000 X-Report-Abuse: Please report any abuse attempt to abuse@migadu.com and include these headers. DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux.dev; s=key1; t=1786489409; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding; bh=8UvpAj+F5vT5g4mqj62S8++wLHXXvTKlCPt/B/F/wRA=; b=uhqDK676wfkne/SJg/zrMRXEuKOCSYL5QtpyKgvrDo0pT2IcJKOScNB6Dmfx/xf3WPo8SH 6f18T8GkU74//HaIFjg30nYvgx2HUPxgBLLYF9sln+zlLRBujxWy4Toy7aYHmFxjMqCaQC z0RcgOXAHRHzBL7Qxh87wLjLX496R2I= From: Jinyu Tang To: Anup Patel , Anup Patel , Paolo Bonzini , Sean Christopherson Cc: kvm@vger.kernel.org, kvm-riscv@lists.infradead.org, linux-riscv@lists.infradead.org, linux-kernel@vger.kernel.org, linux-kselftest@vger.kernel.org, Atish Patra , Paul Walmsley , Paul Walmsley , Palmer Dabbelt , Albert Ou , Alexandre Ghiti , Andrew Jones , Conor Dooley , Yong-Xuan Wang , Nutty Liu , Jinyu Tang , Jinyu Tang Subject: [PATCH v2 0/3] KVM: riscv: Add KVM_PRE_FAULT_MEMORY support Date: Wed, 12 Aug 2026 07:03:13 +0800 Message-ID: <20260811230316.218770-1-jinyu.tang@linux.dev> MIME-Version: 1.0 X-Migadu-Flow: FLOW_OUT X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.9.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20260811_160337_245731_02F92E8D X-CRM114-Status: UNSURE ( 7.63 ) X-CRM114-Notice: Please train this message. X-BeenThere: kvm-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: "kvm-riscv" Errors-To: kvm-riscv-bounces+kvm-riscv=archiver.kernel.org@lists.infradead.org This series adds RISC-V support for the generic KVM_PRE_FAULT_MEMORY vcpu ioctl and enables the existing generic KVM selftest for RISC-V. KVM_PRE_FAULT_MEMORY lets userspace ask KVM to populate stage-2 mappings for a GPA range before running a vCPU that is expected to access that range. x86 already supports the ioctl; RISC-V currently falls back to normal first-touch G-stage faults. Patch 1 implements the RISC-V arch hook using the existing G-stage map path. Patch 2 fixes the RISC-V selftest page-table walker for Sv57, which can be selected as the default guest mode. Patch 3 enables pre_fault_memory_test for RISC-V. Tested with pre_fault_memory_test on a RISC-V KVM host. Changes in v2: - Drop the per-test guest_modes_append_default() call from pre_fault_memory_test.c. RISC-V already initializes supported and default guest modes from kvm_selftest_arch_init(), which is called by the common kvm_selftest_init() constructor, as suggested by Sean. Jinyu Tang (3): KVM: riscv: Implement KVM_PRE_FAULT_MEMORY KVM: selftests: Add RISC-V Sv57 page table indexing KVM: selftests: Enable pre_fault_memory_test for RISC-V arch/riscv/kvm/Kconfig | 1 + arch/riscv/kvm/gstage.c | 3 ++ arch/riscv/kvm/mmu.c | 33 +++++++++++++++++++ arch/riscv/kvm/vm.c | 1 + tools/testing/selftests/kvm/Makefile.kvm | 1 + .../selftests/kvm/include/riscv/processor.h | 6 ++++ .../selftests/kvm/lib/riscv/processor.c | 2 ++ 7 files changed, 47 insertions(+) -- 2.43.0 -- kvm-riscv mailing list kvm-riscv@lists.infradead.org http://lists.infradead.org/mailman/listinfo/kvm-riscv