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 E97B3C79F89 for ; Mon, 7 Sep 2026 08:35:04 +0000 (UTC) Received: from boromir.ozlabs.org (localhost [127.0.0.1]) by lists.ozlabs.org (Postfix) with ESMTP id 4hdgP32FYbz2yvj; Mon, 07 Sep 2026 18:35:03 +1000 (AEST) Authentication-Results: lists.ozlabs.org; arc=none smtp.remote-ip="2a07:de40:b251:101:10:150:64:1" ARC-Seal: i=1; a=rsa-sha256; d=lists.ozlabs.org; s=201707; t=1788770103; cv=none; b=apPOdEB1ZoRoP1miVf1xI5GfaBeiyJ3duGbechc3TD0NpGi0DzyFb3fWow6DDgzQgpu9koQnLFX/ORltVRuhCKYeHwzSX3zXiQ7F34Kvnvsdu8huNJ+ZDTONJcPPQX5nm0c4rUxmNTisXY2NsyjFKmehyZAhtHgnaeBRdl/BersCPz3ga//iazxisS/tzIEB+5P5GjnpjSqhIXsctIupiKaokl5wQnsTpc0JIIU/jVyVRfKpZiW8I+rINe1zRr/taX4v/0JoDwvcz1PAKWc/fcPl2hxRAyym/Mu49HXT20aEadjY5Qm3sVCnhHpX6CcbgVsNJg4CYncqyy0O1b5z6w== ARC-Message-Signature: i=1; a=rsa-sha256; d=lists.ozlabs.org; s=201707; t=1788770103; c=relaxed/relaxed; bh=P5L7h3jJPOtuGW9dF0Z9UUqBDrEsnf0yktjqYcU6pQ8=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=E3lqnUUHNXLIi/SKsvRHnjTmARhEWw1y3b6kO5l682aR7VgKzo0UHEE7YpgmhTPFX1ykGqiuLZRJmwtKlhiFXWeVoWg133ZAFteBy7V006C+GjfcgkWenpO82x9lIU7vrmAARQ0dB3Ipp475h0QxVbb1uuerxBM7e7Mp9gMqkJkoCKRDJZZMxzUv8EG2/Y5U67dAwez6I6xp2BM4uck/4ez9vdEh9jhepQk84Xy6vC7cuFlGGmgyQhDAZaQDeBABqMTONKHelPGHxV0La4fGgUOc8JRH1cmlef7/xGoJRZH0m2GGZ+qh+/DNtkqgWIl6Hci4QoObv20FPEQAUegREg== ARC-Authentication-Results: i=1; lists.ozlabs.org; dmarc=pass (p=none dis=none) header.from=suse.de; dkim=pass (1024-bit key; unprotected) header.d=suse.de header.i=@suse.de header.a=rsa-sha256 header.s=susede2_rsa header.b=FCsYM2mm; dkim=pass header.d=suse.de header.i=@suse.de header.a=ed25519-sha256 header.s=susede2_ed25519 header.b=hue610HF; dkim=pass (1024-bit key) header.d=suse.de header.i=@suse.de header.a=rsa-sha256 header.s=susede2_rsa header.b=l+OXNMw8; dkim=neutral header.d=suse.de header.i=@suse.de header.a=ed25519-sha256 header.s=susede2_ed25519 header.b=fLQhzhLS; dkim-atps=neutral; spf=pass (client-ip=2a07:de40:b251:101:10:150:64:1; helo=smtp-out1.suse.de; envelope-from=msuchanek@suse.de; receiver=lists.ozlabs.org) smtp.mailfrom=suse.de Authentication-Results: lists.ozlabs.org; dmarc=pass (p=none dis=none) header.from=suse.de Authentication-Results: lists.ozlabs.org; dkim=pass (1024-bit key; unprotected) header.d=suse.de header.i=@suse.de header.a=rsa-sha256 header.s=susede2_rsa header.b=FCsYM2mm; dkim=pass header.d=suse.de header.i=@suse.de header.a=ed25519-sha256 header.s=susede2_ed25519 header.b=hue610HF; dkim=pass (1024-bit key) header.d=suse.de header.i=@suse.de header.a=rsa-sha256 header.s=susede2_rsa header.b=l+OXNMw8; dkim=neutral header.d=suse.de header.i=@suse.de header.a=ed25519-sha256 header.s=susede2_ed25519 header.b=fLQhzhLS; dkim-atps=neutral Authentication-Results: lists.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=suse.de (client-ip=2a07:de40:b251:101:10:150:64:1; helo=smtp-out1.suse.de; envelope-from=msuchanek@suse.de; receiver=lists.ozlabs.org) Received: from smtp-out1.suse.de (smtp-out1.suse.de [IPv6:2a07:de40:b251:101:10:150:64:1]) (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 4hdgP14fRXz2yvY for ; Mon, 07 Sep 2026 18:35:01 +1000 (AEST) Received: from kunlun.suse.cz (unknown [IPv6:2a07:de40:b306:2000::2]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange ECDHE (prime256v1) server-signature RSA-PSS (4096 bits) server-digest SHA256) (No client certificate requested) by smtp-out1.suse.de (Postfix) with ESMTPS id 8B6F721A3A; Mon, 7 Sep 2026 08:34:49 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.de; s=susede2_rsa; t=1788770093; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version:content-type:content-type: in-reply-to:in-reply-to:references:references; bh=P5L7h3jJPOtuGW9dF0Z9UUqBDrEsnf0yktjqYcU6pQ8=; b=FCsYM2mmarB3qXfIEeIWWb5XDdQHoVbfOkfHs6ARV7sIh+cAZJIuRbeE0gJaPS8O2x698o tXcfxnN/ha8Tptin5gg2pmDeJixUQjSlUHJC55Xgssb9oR/j4oB1DPlbGonh0TiyQYc87c 8DNegqYJQtvIr2qDfmSnPQJX5eiZC3U= DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=suse.de; s=susede2_ed25519; t=1788770093; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version:content-type:content-type: in-reply-to:in-reply-to:references:references; bh=P5L7h3jJPOtuGW9dF0Z9UUqBDrEsnf0yktjqYcU6pQ8=; b=hue610HFAm/L993Tte17gTKnARG61kdckHGRAiSGLjqo77wAzYFL6c9mhbpYuwT4zZKe2z wpyKnZENVFojJ+Dg== Authentication-Results: smtp-out1.suse.de; dkim=pass header.d=suse.de header.s=susede2_rsa header.b=l+OXNMw8; dkim=pass header.d=suse.de header.s=susede2_ed25519 header.b=fLQhzhLS DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.de; s=susede2_rsa; t=1788770089; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version:content-type:content-type: in-reply-to:in-reply-to:references:references; bh=P5L7h3jJPOtuGW9dF0Z9UUqBDrEsnf0yktjqYcU6pQ8=; b=l+OXNMw8CGh103u/HVGGXE1VoQkoh4tERcY3zco0qx4jGdIcOWUJuO5N1QqjCqKh26bXyG zmhGWb7I713+7GrAPBurgF8uMb8pYIlUxKkjtQenNPckfjIb47O3HcLTUEHDpqcFnnX+5A 0+Q8tkhvaDH30VTBGZXeIWDiEni3qrA= DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=suse.de; s=susede2_ed25519; t=1788770089; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version:content-type:content-type: in-reply-to:in-reply-to:references:references; bh=P5L7h3jJPOtuGW9dF0Z9UUqBDrEsnf0yktjqYcU6pQ8=; b=fLQhzhLSsSiDdX3rxfN+t0CgxNkfuZTnezhurr+WDldBhjFylafG3fa3+aMQjBOvnn9cDe stH+Eot1NqyFqnBA== Date: Mon, 7 Sep 2026 10:34:48 +0200 From: Michal =?iso-8859-1?Q?Such=E1nek?= To: Venkat Rao Bagalkote Cc: linuxppc-dev@lists.ozlabs.org, maddy@linux.ibm.com, mpe@ellerman.id.au, npiggin@gmail.com, chleroy@kernel.org, mkchauras@linux.ibm.com, mkchauras@gmail.com, sshegde@linux.ibm.com, ruanjinjie@huawei.com, ritesh.list@gmail.com, riteshh@linux.ibm.com, linux-kernel@vger.kernel.org Subject: Re: [PATCH] powerpc/interrupt: Use early_radix_enabled() in NMI real-mode guard Message-ID: References: <20260907070058.26338-1-venkat88@linux.ibm.com> X-Mailing-List: linuxppc-dev@lists.ozlabs.org List-Id: List-Help: List-Owner: List-Post: List-Archive: , List-Subscribe: , , List-Unsubscribe: Precedence: list MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20260907070058.26338-1-venkat88@linux.ibm.com> X-Rspamd-Server: rspamd2.dmz-prg2.suse.org X-Rspamd-Action: add header X-Rspamd-Queue-Id: 8B6F721A3A X-Spamd-Result: default: False [13.55 / 50.00]; SPAM_FLAG(5.00)[]; NEURAL_SPAM_LONG(3.50)[1.000]; BAYES_HAM(-3.00)[100.00%]; HFILTER_HOSTNAME_UNKNOWN(2.50)[]; RDNS_NONE(2.00)[]; SUSPICIOUS_RECIPS(1.50)[]; ONCE_RECEIVED(1.20)[]; HFILTER_HELO_IP_A(1.00)[kunlun.suse.cz]; HFILTER_HELO_NORES_A_OR_MX(0.30)[kunlun.suse.cz]; R_DKIM_ALLOW(-0.20)[suse.de:s=susede2_rsa,suse.de:s=susede2_ed25519]; NEURAL_HAM_SHORT(-0.14)[-0.718]; MIME_GOOD(-0.10)[text/plain]; MX_GOOD(-0.01)[]; RCPT_COUNT_TWELVE(0.00)[13]; MIME_TRACE(0.00)[0:+]; DKIM_SIGNED(0.00)[suse.de:s=susede2_rsa,suse.de:s=susede2_ed25519]; SPAMHAUS_XBL(0.00)[2a07:de40:b306:2000::2:from]; RBL_SPAMHAUS_BLOCKED_OPENRESOLVER(0.00)[2a07:de40:b306:2000::2:from]; ARC_NA(0.00)[]; FREEMAIL_ENVRCPT(0.00)[gmail.com]; TO_DN_SOME(0.00)[]; RCVD_COUNT_ZERO(0.00)[0]; FROM_EQ_ENVFROM(0.00)[]; FROM_HAS_DN(0.00)[]; TO_MATCH_ENVRCPT_ALL(0.00)[]; TAGGED_RCPT(0.00)[]; DKIM_TRACE(0.00)[suse.de:+]; MISSING_XM_UA(0.00)[]; FREEMAIL_CC(0.00)[lists.ozlabs.org,linux.ibm.com,ellerman.id.au,gmail.com,kernel.org,huawei.com,vger.kernel.org]; DBL_BLOCKED_OPENRESOLVER(0.00)[kunlun.suse.cz:mid,kunlun.suse.cz:helo,suse.de:dkim] X-Spamd-Bar: +++++++++++++ X-Spam: Yes Hello, On Mon, Sep 07, 2026 at 12:30:58PM +0530, Venkat Rao Bagalkote wrote: > radix_enabled() uses a jump label which is only valid after > mmu_feature_keys_init() is called. Before that point, on a pSeries > hash guest, early_check_vec5() clears MMU_FTR_TYPE_RADIX in > cur_cpu_spec->mmu_features but the jump label has not yet been patched, > so radix_enabled() incorrectly returns true. > > Replace radix_enabled() with early_radix_enabled() which does a plain > bitmask check against cur_cpu_spec->mmu_features and is correct at all > times, including before jump label initialization. Any Fixes: here? Thanks Michal > > Add the missing #include since early_radix_enabled() is > declared there. > > Signed-off-by: Venkat Rao Bagalkote > --- > arch/powerpc/include/asm/interrupt.h | 5 +++-- > 1 file changed, 3 insertions(+), 2 deletions(-) > > diff --git a/arch/powerpc/include/asm/interrupt.h b/arch/powerpc/include/asm/interrupt.h > index 1b45a49e9bed..36a654e780f7 100644 > --- a/arch/powerpc/include/asm/interrupt.h > +++ b/arch/powerpc/include/asm/interrupt.h > @@ -71,6 +71,7 @@ > > #include > #include > +#include > > #ifdef CONFIG_PPC_IRQ_SOFT_MASK_DEBUG > /* > @@ -290,7 +291,7 @@ interrupt_handler long func(struct pt_regs *regs) \ > state = irqentry_nmi_enter(regs); \ > } else if (IS_ENABLED(CONFIG_PPC_BOOK3S_64) && \ > firmware_has_feature(FW_FEATURE_LPAR) && \ > - !radix_enabled()) { \ > + !early_radix_enabled()) { \ > /* no nmi_entry for a pseries hash guest \ > * taking a real mode exception */ \ > } else if (IS_ENABLED(CONFIG_KASAN)) { \ > @@ -307,7 +308,7 @@ interrupt_handler long func(struct pt_regs *regs) \ > irqentry_nmi_exit(regs, state); \ > } else if (IS_ENABLED(CONFIG_PPC_BOOK3S_64) && \ > firmware_has_feature(FW_FEATURE_LPAR) && \ > - !radix_enabled()) { \ > + !early_radix_enabled()) { \ > /* no nmi_exit for a pseries hash guest \ > * taking a real mode exception */ \ > } else if (IS_ENABLED(CONFIG_KASAN)) { \ > -- > 2.45.2 > >