From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-244121.protonmail.ch (mail-244121.protonmail.ch [109.224.244.121]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id D720C2877FC; Tue, 10 Mar 2026 19:30:44 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=109.224.244.121 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1773171046; cv=none; b=U2DZ4cX9lASu7SPxtkKq8wXKLt2RO5vO8bz21C5nQm9UyjRsIeLME+cGEhu7Z99P0waKgHxICZ2Hp/xfLZuc96fiqDeD48jT1CyOOViOIXCHsdmFHpn4ZJgPt6xiEFfKF3MOtvQOxMqyEYyypqEjjyW9DoSHOyxeNNZBN8sos08= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1773171046; c=relaxed/simple; bh=DebX/uKrd8E1cdubk7gVqD5mFHMWz0EBsTGvClcjjLU=; h=Date:To:From:Cc:Subject:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=nvxweJS7nM8O3YG7ihovgG2iB5VO0oCE7Zrh8V+JCqJKnfakUwF6A/ngyE5C87+uJkFyVF4gQsplzEmnjTD4TGFf4fozW17Yz4/j+/86v7bOThLZn94TcmIAC8KDy3bOU6KXConLWDS5LSNV7g8hwdw7DxI1IowaP4Bn3PdOCNQ= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=pm.me; spf=pass smtp.mailfrom=pm.me; dkim=pass (2048-bit key) header.d=pm.me header.i=@pm.me header.b=NNYtUTuf; arc=none smtp.client-ip=109.224.244.121 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=pm.me Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=pm.me Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=pm.me header.i=@pm.me header.b="NNYtUTuf" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=pm.me; s=protonmail3; t=1773171042; x=1773430242; bh=DebX/uKrd8E1cdubk7gVqD5mFHMWz0EBsTGvClcjjLU=; h=Date:To:From:Cc:Subject:Message-ID:In-Reply-To:References: Feedback-ID:From:To:Cc:Date:Subject:Reply-To:Feedback-ID: Message-ID:BIMI-Selector; b=NNYtUTufT6cuK2gc3E3sBQG2y4/1aMcxGYI/3+6ltvtRORBVHg0PdzDYXP8h0g/s4 4gikZ/igoaKXzSdiysh94bjtGM/3re9YTzZ7wmKv0lDLKJxpWkqTRgtFXddPz0ED4v ERO+26f0E9y2rIwdKL4WodXyL/Hsw0E+F+oGyCJxysGm5Lodv8BIyYVrHx66zMx/cq d676Pvcr12yESXAuomDZyFPLuDRgX332ei0JVZqSxiLFB0FHH1aId+YikcqE3ozcV0 CAaKYUkFstB2d73FF+hgRfcJRAF85qA3g/qFKLTTFpk2djX8mWzmrtwBTUKKs/bmxI Y/2pcg890uG3A== Date: Tue, 10 Mar 2026 19:30:36 +0000 To: Peter Zijlstra From: Maciej Wieczor-Retman Cc: urezki@gmail.com, ryan.roberts@arm.com, kevin.brodsky@arm.com, samuel.holland@sifive.com, dave.hansen@linux.intel.com, jeremy.linton@arm.com, weixugc@google.com, ljs@kernel.org, ryabinin.a.a@gmail.com, rppt@kernel.org, bp@alien8.de, luto@kernel.org, jan.kiszka@siemens.com, mingo@redhat.com, david@kernel.org, mhocko@suse.com, akpm@linux-foundation.org, andreas@gaisler.com, kas@kernel.org, Liam.Howlett@oracle.com, morbo@google.com, thuth@redhat.com, catalin.marinas@arm.com, ankur.a.arora@oracle.com, kbingham@kernel.org, nick.desaulniers+lkml@gmail.com, andreyknvl@gmail.com, dvyukov@google.com, corbet@lwn.net, leitao@debian.org, hpa@zytor.com, tglx@kernel.org, yuanchu@google.com, ardb@kernel.org, vincenzo.frascino@arm.com, tabba@google.com, joey.gouly@arm.com, nsc@kernel.org, will@kernel.org, yeoreum.yun@arm.com, nathan@kernel.org, maciej.wieczor-retman@intel.com, skhan@linuxfoundation.org, axelrasmussen@google.com, osandov@fb.com, surenb@google.com, justinstitt@google.com, kees@kernel.org, vbabka@kernel.org, hsj0512@snu.ac.kr, trintaeoitogc@gmail.com, jackmanb@google.com, maz@kernel.org, glider@google.com, linux-doc@vger.kernel.org, x86@kernel.org, linux-kernel@vger.kernel.org, kasan-dev@googlegroups.com, workflows@vger.kernel.org, llvm@lists.linux.dev, linux-arm-kernel@lists.infradead.org, linux-kbuild@vger.kernel.org, linux-mm@kvack.org Subject: Re: [PATCH v11 00/15] kasan: x86: arm64: KASAN tag-based mode for x86 Message-ID: In-Reply-To: <20260310190022.GI606826@noisy.programming.kicks-ass.net> References: <20260310190022.GI606826@noisy.programming.kicks-ass.net> Feedback-ID: 164464600:user:proton X-Pm-Message-ID: deeac2913fe3968b47380487a2b3c2c800a00e30 Precedence: bulk X-Mailing-List: workflows@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable On 2026-03-10 at 20:00:22 +0100, Peter Zijlstra wrote: >On Tue, Mar 10, 2026 at 05:51:19PM +0000, Maciej Wieczor-Retman wrote: > >> =3D=3D=3D=3D=3D=3D=3D Compilation >> Clang was used to compile the series (make LLVM=3D1) since gcc doesn't >> seem to have support for KASAN tag-based compiler instrumentation on >> x86. Patchset does seem to compile with gcc without an issue but doesn't >> boot afterwards. > >Can you put all that under a specific CONFIG and make that depend on >CC_IS_CLANG? I made HAVE_ARCH_KASAN_SW_TAGS depend on CC_IS_CLANG, and that controls all= the software tags stuff, like ARCH_DISABLE_KASAN_INLINE through KASAN_SW_TAGS. And ARCH_NEEDS_DEFER_KASAN is for if KASAN is compiled but LAM is not avail= able, so that it gets disabled in runtime. But sure, I suppose I can add a separate CONFIG with CC_IS_CLANG to these t= hree so the clang connection is more transparent. --=20 Kind regards Maciej Wiecz=C3=B3r-Retman