From patchwork Thu Aug 22 06:56:08 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Christoph Hellwig X-Patchwork-Id: 11108523 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id D635314F7 for ; Thu, 22 Aug 2019 06:56:35 +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 B53B1233FE for ; Thu, 22 Aug 2019 06:56:35 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="PPSYD/iX" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org B53B1233FE Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=lst.de Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-riscv-bounces+patchwork-linux-riscv=patchwork.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender: Content-Transfer-Encoding:Content-Type:Cc:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-Id:Date:Subject:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=F8zosLt3glZ52Njwljko77U0FaX0oFoNR5RuDfGTCgM=; b=PPSYD/iXokCPFy kHLiZCCRW7r0weyp7xGbCGGIWM/D3iDSKlIttSOCF4xuRJmHZlNOeXldltbr3FqCfQOFezGqlkiSv q6/RxM6t08n/wT+aXhRGqwr7OWrePBtJoG8UahWrhpbAADtKhq+UTl9QVRqOlzEWz+9WN4h8A1Nw9 m4e9T7Hy63DZdIKNDSwIWWlsxV1R+f4cZkr5zGTDfcag1H1RO8rUcV25fEr+UnHvZeMwpaHIyA+xD G2mTJFrvZBB0zSS92zMTQlaukHySGa6seUQ7q1e9SN3+p4nSMhy0/cIJYPF7MwUNCDRUlFnopRq71 oPEbNnW8AhlNGBQbuFnw==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.92 #3 (Red Hat Linux)) id 1i0h1K-0008S0-PB; Thu, 22 Aug 2019 06:56:30 +0000 Received: from rap-us.hgst.com ([199.255.44.250] helo=localhost) by bombadil.infradead.org with esmtpsa (Exim 4.92 #3 (Red Hat Linux)) id 1i0h1E-0008Kj-Cq; Thu, 22 Aug 2019 06:56:24 +0000 From: Christoph Hellwig To: Palmer Dabbelt , Paul Walmsley Subject: [PATCH 4/8] riscv: remove the active_mm check in sys_riscv_flush_icache Date: Thu, 22 Aug 2019 15:56:08 +0900 Message-Id: <20190822065612.28634-5-hch@lst.de> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20190822065612.28634-1-hch@lst.de> References: <20190822065612.28634-1-hch@lst.de> MIME-Version: 1.0 X-BeenThere: linux-riscv@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: linux-riscv@lists.infradead.org Sender: "linux-riscv" Errors-To: linux-riscv-bounces+patchwork-linux-riscv=patchwork.kernel.org@lists.infradead.org current->active_mm is always the same as current->mm for user processes (see Documentation/vm/active_mm.rst for details), and given that we are directly in a syscall handler this is obviously the case here. Signed-off-by: Christoph Hellwig --- arch/riscv/mm/cacheflush.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/riscv/mm/cacheflush.c b/arch/riscv/mm/cacheflush.c index 4f78d6552476..eed715de4795 100644 --- a/arch/riscv/mm/cacheflush.c +++ b/arch/riscv/mm/cacheflush.c @@ -38,7 +38,7 @@ static void flush_icache_mm(bool local) */ cpumask_andnot(&others, mm_cpumask(current->mm), cpumask_of(cpu)); local |= cpumask_empty(&others); - if (current->mm != current->active_mm || !local) { + if (!local) { riscv_cpuid_to_hartid_mask(&others, &hmask); sbi_remote_fence_i(hmask.bits); } else {