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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 4014FC54EE9 for ; Sat, 3 Sep 2022 16:38:27 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229509AbiICQiW (ORCPT ); Sat, 3 Sep 2022 12:38:22 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:58208 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229506AbiICQiV (ORCPT ); Sat, 3 Sep 2022 12:38:21 -0400 Received: from dfw.source.kernel.org (dfw.source.kernel.org [139.178.84.217]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id C9DBA1C906; Sat, 3 Sep 2022 09:38:20 -0700 (PDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id 4EC976069F; Sat, 3 Sep 2022 16:38:20 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id F2258C433D6; Sat, 3 Sep 2022 16:38:14 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1662223099; bh=nhcHi1pAXvIK/aBrMWnrTnqIPWHvUnNgnjUh9wJ8cJo=; h=From:To:Cc:Subject:Date:From; b=s1J9Gka30TmWDOqBBdOBbNBWtSV06/OLcATRNq7s9VfJuQQ+qVoGcXLa+r1SNziSY jGs3snAugGWGRulbNwtE+KZAUxMJBBuTwQRPTRgTNGayVjJE5g5x9MduxStuNQ3nPU CdK4pM1THSTlod/s0RlDXTnu0kNAsG9H+ODCIF8MGYQ12kud7T7R85lybjZoJkjhHf 3QvhFFwOlNDCC52OU6/rSvY+f4fcGy4P/nWHuS0pvo0ktJkUEuxGYbydRi9LfqlgOz GMbhIP+fKIkda/V/+IYhA+rS7Y8afMzVEtz7Hj6B5tuoHaABrp5AHG741uUsGnwgmQ kcSDUCcq/iUIg== From: guoren@kernel.org To: arnd@arndb.de, guoren@kernel.org, palmer@rivosinc.com, tglx@linutronix.de, peterz@infradead.org, luto@kernel.org Cc: linux-arch@vger.kernel.org, linux-kernel@vger.kernel.org, linux-riscv@lists.infradead.org, Guo Ren Subject: [PATCH 0/3] riscv: Add GENERIC_ENTRY & IRQ_STACKS support Date: Sat, 3 Sep 2022 12:38:05 -0400 Message-Id: <20220903163808.1954131-1-guoren@kernel.org> X-Mailer: git-send-email 2.36.1 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-arch@vger.kernel.org From: Guo Ren The patches convert riscv to use the generic entry infrastructure from kernel/entry/*. Add independent irq stacks (IRQ_STACKS) for percpu to prevent kernel stack overflows. Add the HAVE_SOFTIRQ_ON_OWN_STACK feature for the IRQ_STACKS config. Guo Ren (3): riscv: convert to generic entry riscv: Support HAVE_IRQ_EXIT_ON_IRQ_STACK riscv: Support HAVE_SOFTIRQ_ON_OWN_STACK arch/riscv/Kconfig | 10 + arch/riscv/include/asm/csr.h | 1 - arch/riscv/include/asm/entry-common.h | 8 + arch/riscv/include/asm/irq.h | 2 + arch/riscv/include/asm/ptrace.h | 10 +- arch/riscv/include/asm/stacktrace.h | 5 + arch/riscv/include/asm/syscall.h | 5 + arch/riscv/include/asm/thread_info.h | 15 +- arch/riscv/include/asm/vmap_stack.h | 28 +++ arch/riscv/kernel/entry.S | 255 +++++--------------------- arch/riscv/kernel/irq.c | 74 ++++++++ arch/riscv/kernel/ptrace.c | 40 ---- arch/riscv/kernel/signal.c | 20 +- arch/riscv/kernel/sys_riscv.c | 26 +++ arch/riscv/kernel/traps.c | 11 ++ arch/riscv/mm/fault.c | 12 +- 16 files changed, 241 insertions(+), 281 deletions(-) create mode 100644 arch/riscv/include/asm/entry-common.h create mode 100644 arch/riscv/include/asm/vmap_stack.h -- 2.36.1