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 lists.ozlabs.org (lists.ozlabs.org [112.213.38.117]) (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 E8AEDC61DA4 for ; Tue, 31 Jan 2023 03:10:11 +0000 (UTC) Received: from boromir.ozlabs.org (localhost [IPv6:::1]) by lists.ozlabs.org (Postfix) with ESMTP id 4P5VR62t2Cz3cGv for ; Tue, 31 Jan 2023 14:10:10 +1100 (AEDT) Authentication-Results: lists.ozlabs.org; dkim=pass (2048-bit key; unprotected) header.d=ellerman.id.au header.i=@ellerman.id.au header.a=rsa-sha256 header.s=201909 header.b=kpQhUCSX; dkim-atps=neutral Received: from gandalf.ozlabs.org (mail.ozlabs.org [IPv6:2404:9400:2221:ea00::3]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits)) (No client certificate requested) by lists.ozlabs.org (Postfix) with ESMTPS id 4P5VQ60cdhz2ylk for ; Tue, 31 Jan 2023 14:09:18 +1100 (AEDT) Authentication-Results: lists.ozlabs.org; dkim=pass (2048-bit key; unprotected) header.d=ellerman.id.au header.i=@ellerman.id.au header.a=rsa-sha256 header.s=201909 header.b=kpQhUCSX; dkim-atps=neutral Received: from authenticated.ozlabs.org (localhost [127.0.0.1]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (No client certificate requested) by mail.ozlabs.org (Postfix) with ESMTPSA id 4P5VQ55Ln7z4x1h; Tue, 31 Jan 2023 14:09:17 +1100 (AEDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ellerman.id.au; s=201909; t=1675134557; bh=dsmeP4H7IDd2PWzOqULkDKQ9KxgZ3QtNQ4f18Qao/0E=; h=From:To:Cc:Subject:In-Reply-To:References:Date:From; b=kpQhUCSXUuoMuudxSp1PjDiAbzC5VHUG30psZLY4P5qRrlXafi0rz+4OgTkYCbsFP uLgJS/lOZRSoeEwqpLzv5mxsaDo6oC2b5PYdDIxGVbqW0nB6taDlKBmb5MtnRBF+d8 gsuM2o+ZZ1UaRC3/NYsVrrJ/yZ5zgvz6L+GI4W5MURbd2LDnLvH6+sYfSWPQ43ef5p c0UPtD6/FIJrbWUbNmTfIR3NBtV+WT54jvNKYs8GvoJQ+vqxBSM3cUv1KKrzi6K77s R1MJTkmfsZcol18sRaMCqGH4bekYzkgLyym5irjsokXpox7vOljhJLPnUFArl7HOvy 6tJ/k1nJ1Wy7g== From: Michael Ellerman To: Benjamin Gray , linuxppc-dev@lists.ozlabs.org Subject: Re: [PATCH] powerpc/tlb: Remove BUILD_BUG for book3s/32/tlbflush.h local_flush_tlb_page_psize In-Reply-To: <45dba0a78f7f746effd482186c1c5d41670f51b3.camel@linux.ibm.com> References: <20230124215424.9068-1-bgray@linux.ibm.com> <87sffyq22y.fsf@mpe.ellerman.id.au> <45dba0a78f7f746effd482186c1c5d41670f51b3.camel@linux.ibm.com> Date: Tue, 31 Jan 2023 14:09:13 +1100 Message-ID: <87ilgnflie.fsf@mpe.ellerman.id.au> MIME-Version: 1.0 Content-Type: text/plain X-BeenThere: linuxppc-dev@lists.ozlabs.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: kernel test robot Errors-To: linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org Sender: "Linuxppc-dev" Benjamin Gray writes: > On Wed, 2023-01-25 at 22:35 +1100, Michael Ellerman wrote: >> Can't we just fall back to flush_tlb_page(vma, vmaddr)? >> >> I'd guess those CPUs can't flush based on page size anyway. >> >> cheers > > Probably. Do they have a fixed page size? AFAIK yes. cheers