From patchwork Tue May 25 12:24:06 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Guo Ren X-Patchwork-Id: 12278659 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-17.4 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,INCLUDES_CR_TRAILER,INCLUDES_PATCH,MAILING_LIST_MULTI, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 0D9EFC2B9F8 for ; Tue, 25 May 2021 12:26:33 +0000 (UTC) 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 mail.kernel.org (Postfix) with ESMTPS id CDE0E613F5 for ; Tue, 25 May 2021 12:26:32 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org CDE0E613F5 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=kernel.org Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-riscv-bounces+linux-riscv=archiver.kernel.org@lists.infradead.org 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:MIME-Version:List-Subscribe:List-Help: List-Post:List-Archive:List-Unsubscribe:List-Id: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=XKUn+JHWkiYfFg25+RphnLZpO9zfe7nJ0OkL3zcq/3E=; b=wTuHTcWJEclPHo zCn9YF5DTLsVEcmp3gel62QZ6mAVBvN3Z4mzWuI4walwG1JrCPUJ+Xhd2zGWWuI5mpz+btRxhb2vP bE3FYHvEVD2QxSLRWwGq77hNhLtJ9a6/fpNyA6J7i57iOwNbG9dUsUh6Xb4zoNdK3/0ujFQqhShkl 3Z1ks5jEhOK4WW4Vu3l1L8SELjivu8ZrPECbtpQBq02bXa9PksqEDb3LVc6oEPWQNh9YYIhgPjKBt BOOarn7qv/0U6TJ1NRmLrMh32RpoEXAR2KF6VFme5UBX9FVxerPUNfzCWaXhQxLiZYLRKLWqt/ZTp 2IAudVpXBo6jpiCGNTzw==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1llW8W-0051Ct-CQ; Tue, 25 May 2021 12:26:16 +0000 Received: from mail.kernel.org ([198.145.29.99]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1llW7G-0050fr-GC for linux-riscv@lists.infradead.org; Tue, 25 May 2021 12:24:59 +0000 Received: by mail.kernel.org (Postfix) with ESMTPSA id 2CD1A6141B; Tue, 25 May 2021 12:24:55 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1621945498; bh=AVRcXtmLCIJi5XnfF9tb6jrsuH0Q2wdP15ACb5u8w4k=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=FNVZJPsAfA0x+sFfdIgWJpH5zJUF9ZI3f8G+JqF8Clw0aTgpe7lfMii+hnfCs380m vBVhYRR2d92eAYpPpdArfOTXlsVdVKiEVdR7XlJQs1EuxuVLZKDsNRWu2V9Ar8wfmo VcYLVAynxBlirnakLIu8NoIMbWevMeXZt/nSHIWlTVlytka5JXQjPuhQJ+xg7HorA/ jOdex5EFDmLXlY315GRXyRYmZOwcYjqt0oRuqblQ/5W39yxx67Kww35MqXJPMBDE4Z LxhWiWxSYRKpGAwgbznwFvKVreBJrIcW6KNvKhW/hrLOT61v/Yae4TniFfYAvqXbXk T7KmuY3i0Nrxg== From: guoren@kernel.org To: guoren@kernel.org, anup.patel@wdc.com, palmerdabbelt@google.com, arnd@arndb.de, hch@lst.de Cc: linux-riscv@lists.infradead.org, linux-kernel@vger.kernel.org, linux-arch@vger.kernel.org, linux-sunxi@lists.linux.dev, Guo Ren Subject: [PATCH V3 1/2] riscv: Fixup _PAGE_GLOBAL in _PAGE_KERNEL Date: Tue, 25 May 2021 12:24:06 +0000 Message-Id: <1621945447-38820-2-git-send-email-guoren@kernel.org> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1621945447-38820-1-git-send-email-guoren@kernel.org> References: <1621945447-38820-1-git-send-email-guoren@kernel.org> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20210525_052458_599351_66968A07 X-CRM114-Status: UNSURE ( 8.69 ) X-CRM114-Notice: Please train this message. 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: , MIME-Version: 1.0 Sender: "linux-riscv" Errors-To: linux-riscv-bounces+linux-riscv=archiver.kernel.org@lists.infradead.org From: Guo Ren Kernel virtual address translation should avoid care asid or it'll cause more TLB-miss and TLB-refill. Because the current asid in satp belongs to the current process, but the target kernel va TLB entry's asid still belongs to the previous process. Signed-off-by: Guo Ren Reviewed-by: Anup Patel Cc: Palmer Dabbelt Reviewed-by: Christoph Hellwig --- arch/riscv/include/asm/pgtable.h | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/arch/riscv/include/asm/pgtable.h b/arch/riscv/include/asm/pgtable.h index 9469f46..346a3c6 100644 --- a/arch/riscv/include/asm/pgtable.h +++ b/arch/riscv/include/asm/pgtable.h @@ -134,7 +134,8 @@ | _PAGE_WRITE \ | _PAGE_PRESENT \ | _PAGE_ACCESSED \ - | _PAGE_DIRTY) + | _PAGE_DIRTY \ + | _PAGE_GLOBAL) #define PAGE_KERNEL __pgprot(_PAGE_KERNEL) #define PAGE_KERNEL_READ __pgprot(_PAGE_KERNEL & ~_PAGE_WRITE)