From nobody Fri May 1 11:13:35 2026 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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id B4E5CC433FE for ; Mon, 30 May 2022 16:03:06 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S235829AbiE3QDF (ORCPT ); Mon, 30 May 2022 12:03:05 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:60084 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S242536AbiE3QCd (ORCPT ); Mon, 30 May 2022 12:02:33 -0400 Received: from pegase2.c-s.fr (pegase2.c-s.fr [93.17.235.10]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id A13C3FE4 for ; Mon, 30 May 2022 09:02:20 -0700 (PDT) Received: from localhost (mailhub3.si.c-s.fr [172.26.127.67]) by localhost (Postfix) with ESMTP id 4LBgCZ59BYz9tCN; Mon, 30 May 2022 18:02:18 +0200 (CEST) X-Virus-Scanned: amavisd-new at c-s.fr Received: from pegase2.c-s.fr ([172.26.127.65]) by localhost (pegase2.c-s.fr [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id MZzUlpQ_gWpX; Mon, 30 May 2022 18:02:18 +0200 (CEST) Received: from messagerie.si.c-s.fr (messagerie.si.c-s.fr [192.168.25.192]) by pegase2.c-s.fr (Postfix) with ESMTP id 4LBgCZ4Ry8z9tC7; Mon, 30 May 2022 18:02:18 +0200 (CEST) Received: from localhost (localhost [127.0.0.1]) by messagerie.si.c-s.fr (Postfix) with ESMTP id 886A28B77B; Mon, 30 May 2022 18:02:18 +0200 (CEST) X-Virus-Scanned: amavisd-new at c-s.fr Received: from messagerie.si.c-s.fr ([127.0.0.1]) by localhost (messagerie.si.c-s.fr [127.0.0.1]) (amavisd-new, port 10023) with ESMTP id kLRc4Y5avvcx; Mon, 30 May 2022 18:02:18 +0200 (CEST) Received: from PO20335.IDSI0.si.c-s.fr (unknown [172.25.230.108]) by messagerie.si.c-s.fr (Postfix) with ESMTP id 71DFB8B763; Mon, 30 May 2022 18:02:18 +0200 (CEST) Received: from PO20335.IDSI0.si.c-s.fr (localhost [127.0.0.1]) by PO20335.IDSI0.si.c-s.fr (8.17.1/8.16.1) with ESMTPS id 24UG1vpQ277251 (version=TLSv1.3 cipher=TLS_AES_256_GCM_SHA384 bits=256 verify=NOT); Mon, 30 May 2022 18:01:57 +0200 Received: (from chleroy@localhost) by PO20335.IDSI0.si.c-s.fr (8.17.1/8.17.1/Submit) id 24UG1uKf277242; Mon, 30 May 2022 18:01:56 +0200 X-Authentication-Warning: PO20335.IDSI0.si.c-s.fr: chleroy set sender to christophe.leroy@csgroup.eu using -f From: Christophe Leroy To: Benjamin Herrenschmidt , Paul Mackerras , Michael Ellerman Cc: Christophe Leroy , linux-kernel@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, Erhard Furtner Subject: [PATCH] powerpc/Kconfig: Force THREAD_SHIFT to at least 14 with KASAN Date: Mon, 30 May 2022 18:01:53 +0200 Message-Id: X-Mailer: git-send-email 2.35.3 MIME-Version: 1.0 X-Developer-Signature: v=1; a=ed25519-sha256; t=1653926511; l=902; s=20211009; h=from:subject:message-id; bh=hHlzaUPh+wM7+TTFp/1KkTnNy6JxGBHg3YQiF8dwWqA=; b=Q/jGx/r7SnHS59n8DPabZX53BJxT36Wn4ujwSoEHqqPG336Gu9zyTyg7xxe3IKDDQ92AWNmJ7cOx XthiRjOuBbFT1cyKkumLTDPFyGck6apoIR+nKXNt6m1e3XtOBzpH X-Developer-Key: i=christophe.leroy@csgroup.eu; a=ed25519; pk=HIzTzUj91asvincQGOFx6+ZF5AoUuP9GdOtQChs7Mm0= Content-Transfer-Encoding: quoted-printable Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Type: text/plain; charset="utf-8" Allthough 14 is the default THREAD_SHIFT when KASAN is selected, taking an old config may keep 13 when CONFIG_EXPERT is selected. Force it to 14 as a minimum when KASAN is selected. Also default to 15 when KASAN on PPC64. Reported-by: Erhard Furtner Signed-off-by: Christophe Leroy --- arch/powerpc/Kconfig | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig index 3eaddb8997a9..a4427977fdf8 100644 --- a/arch/powerpc/Kconfig +++ b/arch/powerpc/Kconfig @@ -788,8 +788,10 @@ config PPC_PAGE_SHIFT =20 config THREAD_SHIFT int "Thread shift" if EXPERT - range 13 15 + range 13 15 if !KASAN + range 14 15 if KASAN default "15" if PPC_256K_PAGES + default "15" if PPC64 && KASAN default "14" if PPC64 default "14" if KASAN default "13" --=20 2.35.3