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 5484ACDB482 for ; Fri, 13 Oct 2023 13:43:32 +0000 (UTC) Authentication-Results: lists.ozlabs.org; dkim=fail reason="signature verification failed" (2048-bit key; secure) header.d=mailbox.org header.i=@mailbox.org header.a=rsa-sha256 header.s=mail20150812 header.b=Cs5IhrvO; dkim-atps=neutral Received: from boromir.ozlabs.org (localhost [IPv6:::1]) by lists.ozlabs.org (Postfix) with ESMTP id 4S6SQC032Yz3vhp for ; Sat, 14 Oct 2023 00:43:30 +1100 (AEDT) Authentication-Results: lists.ozlabs.org; dkim=pass (2048-bit key; secure) header.d=mailbox.org header.i=@mailbox.org header.a=rsa-sha256 header.s=mail20150812 header.b=Cs5IhrvO; dkim-atps=neutral Authentication-Results: lists.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=mailbox.org (client-ip=2001:67c:2050:0:465::102; helo=mout-p-102.mailbox.org; envelope-from=erhard_f@mailbox.org; receiver=lists.ozlabs.org) Received: from mout-p-102.mailbox.org (mout-p-102.mailbox.org [IPv6:2001:67c:2050:0:465::102]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by lists.ozlabs.org (Postfix) with ESMTPS id 4S6SPB3CdDz3dhR for ; Sat, 14 Oct 2023 00:42:36 +1100 (AEDT) Received: from smtp202.mailbox.org (smtp202.mailbox.org [IPv6:2001:67c:2050:b231:465::202]) (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 mout-p-102.mailbox.org (Postfix) with ESMTPS id 4S6SNy00H8z9slt; Fri, 13 Oct 2023 15:42:26 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=mailbox.org; s=mail20150812; t=1697204546; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=5KyVORMmdsFCe+VFgUpWMVXH0T0VUg2Hs67km9vsQeg=; b=Cs5IhrvO7lzZAq0aoxObmbj0gtykN3EM5wzUW2+SZhlNW42WA5MTHO0xF6UQXaQ+fPHnNy ed5rlE7fy2i5s7rlXph7MNUpcCoaMXDgS3Gi69rSr7zYxOG5y3cqWudmkKJ8mrvi0LPOx6 NnZuomUA7zLhNJgucNoWIBI1cIUmyhwg3+KXm0MiwXvI/LYeUoSVQKMIzzizQBCiGOuK7N Q+ab8AfHxG7exykdCJyf96yI8wnRgaVNDYHcsdfYwKTCoWBoF7P49cmSFMDwtbTOaQBAyR cH1rS82jzFHdu41tZq1+DWvQCUwNpFu9nYImO72yEGssfp1rxfKLPL/egLYAqQ== Date: Fri, 13 Oct 2023 15:42:20 +0200 From: Erhard Furtner To: "Matthew Wilcox (Oracle)" Subject: Re: [PATCH 0/2] Allow nesting of lazy MMU mode Message-ID: <20231013154220.02fb2e6d@yea> In-Reply-To: <20231012195415.282357-1-willy@infradead.org> References: <20231012195415.282357-1-willy@infradead.org> MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit X-MBO-RS-META: fwggrtmigo4x4ffeiuzyox1abn9uz6c1 X-MBO-RS-ID: 69186c5c661cec6bfb2 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: Juergen Gross , linuxppc-dev@lists.ozlabs.org, linux-kernel@vger.kernel.org, linux-sparc@vger.kernel.org, David Woodhouse Errors-To: linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org Sender: "Linuxppc-dev" On Thu, 12 Oct 2023 20:54:13 +0100 "Matthew Wilcox (Oracle)" wrote: > Dave Woodhouse reported that we now nest calls to > arch_enter_lazy_mmu_mode(). That was inadvertent, but in principle we > should allow it. On further investigation, Juergen already fixed it > for Xen, but didn't tell anyone. Fix it for Sparc & PowerPC too. > This may or may not help fix the problem that Erhard reported. > > Matthew Wilcox (Oracle) (2): > powerpc: Allow nesting of lazy MMU mode > sparc: Allow nesting of lazy MMU mode > > arch/powerpc/include/asm/book3s/64/tlbflush-hash.h | 5 ++--- > arch/sparc/mm/tlb.c | 5 ++--- > 2 files changed, 4 insertions(+), 6 deletions(-) > > -- > 2.40.1 Applied the patch on top of v6.6-rc5 but unfortunately it did not fix my reported issue. Regards, Erhard