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 kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by smtp.lore.kernel.org (Postfix) with ESMTP id 1CE6DC7115C for ; Wed, 25 Jun 2025 12:24:26 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id 9FB246B009F; Wed, 25 Jun 2025 08:24:25 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id 9A5986B00AF; Wed, 25 Jun 2025 08:24:25 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 8BB8B6B00AC; Wed, 25 Jun 2025 08:24:25 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from relay.hostedemail.com (smtprelay0011.hostedemail.com [216.40.44.11]) by kanga.kvack.org (Postfix) with ESMTP id 7F6356B009F for ; Wed, 25 Jun 2025 08:24:25 -0400 (EDT) Received: from smtpin23.hostedemail.com (a10.router.float.18 [10.200.18.1]) by unirelay05.hostedemail.com (Postfix) with ESMTP id 566A8580DE for ; Wed, 25 Jun 2025 12:24:25 +0000 (UTC) X-FDA: 83593840890.23.90BADFE Received: from sipsolutions.net (s3.sipsolutions.net [168.119.38.16]) by imf21.hostedemail.com (Postfix) with ESMTP id C77441C0010 for ; Wed, 25 Jun 2025 12:24:23 +0000 (UTC) Authentication-Results: imf21.hostedemail.com; dkim=pass header.d=sipsolutions.net header.s=mail header.b=deQNk4HU; dmarc=pass (policy=none) header.from=sipsolutions.net; spf=pass (imf21.hostedemail.com: domain of johannes@sipsolutions.net designates 168.119.38.16 as permitted sender) smtp.mailfrom=johannes@sipsolutions.net ARC-Seal: i=1; s=arc-20220608; d=hostedemail.com; t=1750854263; a=rsa-sha256; cv=none; b=C3uKLmm0vKkUtjtUYL2+6imadUNt2a41Pj4Px3zIMcT2LGgXeD807K1uiSf6hRwZBdXfeM u51eIZJVgprSXpiVWMwaRYnKhftH3mwzLE5l9MpElv3b7tcTbzjJiwP0twvrExxtIHldYr 7t6J0Tornb5VKxaJOSllZgKnAs6mmY0= ARC-Authentication-Results: i=1; imf21.hostedemail.com; dkim=pass header.d=sipsolutions.net header.s=mail header.b=deQNk4HU; dmarc=pass (policy=none) header.from=sipsolutions.net; spf=pass (imf21.hostedemail.com: domain of johannes@sipsolutions.net designates 168.119.38.16 as permitted sender) smtp.mailfrom=johannes@sipsolutions.net ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=hostedemail.com; s=arc-20220608; t=1750854263; h=from:from:sender: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:dkim-signature; bh=SJ5NkjC+cOiMPwKXMdsR+3xgXJFhGnL3/wL1U2zUcWg=; b=SBtDx//vUab5HY8nhRNp+kTd7jgwyiW5+MdtCDpkVstvjUSgK9i0qCDbvvwRb30t9u8nrr i79ukQb63dBnlrB4JrPGCkZSh+Ggx8FOJUAzyjVsreo9zpMSxc+yb1uLkSIXSQny+PB88X uxZWk073ALT7MGZyfqtyqXZTqLLpix4= DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=sipsolutions.net; s=mail; h=MIME-Version:Content-Transfer-Encoding: Content-Type:References:In-Reply-To:Date:Cc:To:From:Subject:Message-ID:Sender :Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From:Resent-To: Resent-Cc:Resent-Message-ID; bh=SJ5NkjC+cOiMPwKXMdsR+3xgXJFhGnL3/wL1U2zUcWg=; t=1750854263; x=1752063863; b=deQNk4HU4w9n6Q8YM9nROna5D6UmUkojSYkeC7SyJS9vG2k m5YaFzxq+paAWGwrpk0U0BrBUtLZpwVtrXmOqmQz51P3vib/jGV2ZFInyuQOO9FgwS3hMDpVgDDwb wYRiDsDXzQXlaxHt8zYDGpEeiow5sPWKHgQYmRA3Cl4CCSGWzwa+h+R2XuhElJNpcUtFA89xYiyUj 50DNayGV1i57mfzR1A4uQulxN4Wc45SczI2y4vEHTCuHxEjAckeXEGFgXkjIDF3cDYxjKqAyscjJs GDOvT2np43KU62jyCcgbth7wtOb8uRYRhtVsO+kwjUkpkCSUyb20jLbplEDuPvYg==; Received: by sipsolutions.net with esmtpsa (TLS1.3:ECDHE_X25519__RSA_PSS_RSAE_SHA256__AES_256_GCM:256) (Exim 4.98.2) (envelope-from ) id 1uUPAV-00000009xvR-1M4X; Wed, 25 Jun 2025 14:23:59 +0200 Message-ID: <81a8b60be5b99ecd9b322d188738016376aff4aa.camel@sipsolutions.net> Subject: Re: [PATCH 2/9] kasan: replace kasan_arch_is_ready with kasan_enabled From: Johannes Berg To: Christophe Leroy , Sabyrzhan Tasbolatov , ryabinin.a.a@gmail.com, glider@google.com, andreyknvl@gmail.com, dvyukov@google.com, vincenzo.frascino@arm.com, catalin.marinas@arm.com, will@kernel.org, chenhuacai@kernel.org, kernel@xen0n.name, maddy@linux.ibm.com, mpe@ellerman.id.au, npiggin@gmail.com, hca@linux.ibm.com, gor@linux.ibm.com, agordeev@linux.ibm.com, borntraeger@linux.ibm.com, svens@linux.ibm.com, richard@nod.at, anton.ivanov@cambridgegreys.com, dave.hansen@linux.intel.com, luto@kernel.org, peterz@infradead.org, tglx@linutronix.de, mingo@redhat.com, bp@alien8.de, x86@kernel.org, hpa@zytor.com, chris@zankel.net, jcmvbkbc@gmail.com, akpm@linux-foundation.org Cc: guoweikang.kernel@gmail.com, geert@linux-m68k.org, rppt@kernel.org, tiwei.btw@antgroup.com, richard.weiyang@gmail.com, benjamin.berg@intel.com, kevin.brodsky@arm.com, kasan-dev@googlegroups.com, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, loongarch@lists.linux.dev, linuxppc-dev@lists.ozlabs.org, linux-s390@vger.kernel.org, linux-um@lists.infradead.org, linux-mm@kvack.org Date: Wed, 25 Jun 2025 14:23:57 +0200 In-Reply-To: <750b6617-7abf-4adc-b3e6-6194ff10c547@csgroup.eu> References: <20250625095224.118679-1-snovitoll@gmail.com> <20250625095224.118679-3-snovitoll@gmail.com> <750b6617-7abf-4adc-b3e6-6194ff10c547@csgroup.eu> Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable User-Agent: Evolution 3.56.2 (3.56.2-1.fc42) MIME-Version: 1.0 X-malware-bazaar: not-scanned X-Rspam-User: X-Rspamd-Queue-Id: C77441C0010 X-Rspamd-Server: rspam10 X-Stat-Signature: 9howspk87cit13pafy1un6sx4owysrqy X-HE-Tag: 1750854263-380327 X-HE-Meta: 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 DZ0GCAdG 2o/07qk+EValXj8qRJOeepd86zg3q6ProKc2bmYvZvTEIZEM9rnAJ3t6VVGSod0drwI8u X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: On Wed, 2025-06-25 at 12:27 +0200, Christophe Leroy wrote: >=20 > Le 25/06/2025 =C3=A0 11:52, Sabyrzhan Tasbolatov a =C3=A9crit=C2=A0: > > Replace the existing kasan_arch_is_ready() calls with kasan_enabled(). > > Drop checks where the caller is already under kasan_enabled() condition= . >=20 > If I understand correctly, it means that KASAN won't work anymore=20 > between patch 2 and 9, because until the arch calls kasan_init_generic()= =20 > kasan_enabled() will return false. >=20 > The transition should be smooth and your series should remain bisectable. >=20 > Or am I missing something ? >=20 Seems right to me, it won't work for architectures that define kasan_arch_is_ready themselves I think? But since they have to literally #define it, could #ifdef on that temporarily? johannes