From nobody Sat Feb 7 05:57:35 2026 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id A8B4FA926 for ; Sat, 26 Apr 2025 14:16:17 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1745676980; cv=none; b=NADrOy+F2OEbXyP2OQegEu4Vj378QHvKkGpurPbtPGSe+iqakMg36HgoO01ln7U4dLEfVUcn4J5oJxbwPGqfl5+E7aqa5c/44YjP7HN0GUShzRI+1qWXA5pKPJCFVciJo6i+5XHDNCKMH7OVehf0JXfemH22wtoZf/dllMRCFDs= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1745676980; c=relaxed/simple; bh=N1YWiN0vUP+4GgolL3DpxN1tliOksTTr9DRMbL1qvM0=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version; b=mZZK9ZNWmJDZYGlE5eHsoIglyn8PiY4YmVbTu03fvLkaLPb1SzEpGMRgE2Bi52bekXXy/XTlM5pwomjFgnf8qDhBAEl8KdDvAFzQzAeaco8kXizUWlNd22ajfIY/rUsr4wS8vtRcv+7gfI0X1sia6v0YjOlwf3NziVcfwtN1KYY= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=FMz1trMC; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="FMz1trMC" Received: by smtp.kernel.org (Postfix) with ESMTPSA id B38E3C4CEE2; Sat, 26 Apr 2025 14:16:15 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1745676977; bh=N1YWiN0vUP+4GgolL3DpxN1tliOksTTr9DRMbL1qvM0=; h=From:To:Cc:Subject:Date:From; b=FMz1trMCj79iKTZy3+andh8lEk3lSz0Bxpuibpsq0nEw3s33ZWizckYBinIheg2Ox Nex9FKhCEHcK8wtdOhb2g2oVekKixg+kUzID5KijKYihOoWehrnw5sZanGhr7CqbDo g7/Lgdi35rt5lkHy2FGR1XVq+B8BN7+b9jbaw/O5+Lrm2p+wSb0J/rQmVmWAer4jIH ehgAAiOFqPWq0N6EPH+gkfhtxbcyJPYqqFswgJulVzEWioYqSgOEOd+9L88ZK3WxFi V3HCx6cKHu+6SaFjUwzhyR0FYVlygkudoEnOjJHRoHg0Y14LfreEOB1Kn5vCiMHgR3 bUBZFZMlHTlKA== From: Jisheng Zhang To: Paul Walmsley , Palmer Dabbelt , Albert Ou , Alexandre Ghiti Cc: linux-riscv@lists.infradead.org, linux-kernel@vger.kernel.org, Jeff Xu Subject: [PATCH] riscv: enable mseal sysmap for RV64 Date: Sat, 26 Apr 2025 21:59:54 +0800 Message-ID: <20250426135954.5614-1-jszhang@kernel.org> X-Mailer: git-send-email 2.47.2 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" Provide support for CONFIG_MSEAL_SYSTEM_MAPPINGS for RV64, covering the vdso, vvar. Passed sysmap_is_sealed and mseal_test self tests. Passed booting a buildroot rootfs image and a cli debian rootfs image. Signed-off-by: Jisheng Zhang Cc: Jeff Xu Tested-by: Alexandre Ghiti --- arch/riscv/Kconfig | 1 + arch/riscv/kernel/vdso.c | 2 +- 2 files changed, 2 insertions(+), 1 deletion(-) diff --git a/arch/riscv/Kconfig b/arch/riscv/Kconfig index bbec87b79309..3cb0b05eef62 100644 --- a/arch/riscv/Kconfig +++ b/arch/riscv/Kconfig @@ -70,6 +70,7 @@ config RISCV # LLD >=3D 14: https://github.com/llvm/llvm-project/issues/50505 select ARCH_SUPPORTS_LTO_CLANG if LLD_VERSION >=3D 140000 select ARCH_SUPPORTS_LTO_CLANG_THIN if LLD_VERSION >=3D 140000 + select ARCH_SUPPORTS_MSEAL_SYSTEM_MAPPINGS if 64BIT && MMU select ARCH_SUPPORTS_PAGE_TABLE_CHECK if MMU select ARCH_SUPPORTS_PER_VMA_LOCK if MMU select ARCH_SUPPORTS_RT diff --git a/arch/riscv/kernel/vdso.c b/arch/riscv/kernel/vdso.c index cc2895d1fbc2..3a8e038b10a2 100644 --- a/arch/riscv/kernel/vdso.c +++ b/arch/riscv/kernel/vdso.c @@ -136,7 +136,7 @@ static int __setup_additional_pages(struct mm_struct *m= m, =20 ret =3D _install_special_mapping(mm, vdso_base, vdso_text_len, - (VM_READ | VM_EXEC | VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC), + (VM_READ | VM_EXEC | VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC | VM_SEALED_S= YSMAP), vdso_info->cm); =20 if (IS_ERR(ret)) --=20 2.47.2