From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (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 813831853 for ; Tue, 25 Feb 2025 03:31:24 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1740454284; cv=none; b=R7o1WqR8ELFA9NjV4D45C/Nh7r8qWPqeFavEFxLfwStD4Shpc8LNzoNY+aVBkTdPBwN/yXcl+ur6uUfZmz7pnPcjr3vLpCc5YBsLo2dUim6ojer4gV2MrPAGkrhgoL0llYy/oQohx52Zvjz/VN1YgMbetWnIY1R5gTf+zENPMfU= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1740454284; c=relaxed/simple; bh=fhbjlfMBxLDG7DYYOUhhGc1pP57lULiE3ZkTh5tw2to=; h=Date:To:From:Subject:Message-Id; b=gUWRL5x1puEoDB253UZwYmbh7Aqba6t4kGmUt5J3ZPGCXv0IkzNaui/2sXtOCImriDq7L77y4bMGtiPICId1tiRkUUuTsFD7p9IXRZ/1VHuBU0Nvb/WvO4gHBLxINyQ7QWhtCEbhtGg4PQnIOEdxlQJAJtYgxHvmwSQmLvOuebI= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linux-foundation.org header.i=@linux-foundation.org header.b=qIODZPDD; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linux-foundation.org header.i=@linux-foundation.org header.b="qIODZPDD" Received: by smtp.kernel.org (Postfix) with ESMTPSA id F2546C4CEE2; Tue, 25 Feb 2025 03:31:23 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linux-foundation.org; s=korg; t=1740454284; bh=fhbjlfMBxLDG7DYYOUhhGc1pP57lULiE3ZkTh5tw2to=; h=Date:To:From:Subject:From; b=qIODZPDD8lwEgunHABiMlbyLPAWMKtkyKGZoqMVK08bv3cx1ouMeHSsEbMRdxhUc6 1ZWuiSBm/Sb6BVE5Dp70A6UQcVpmj4znHoIs3N3Zoh9XnWqK+fHOAOhnrQqYfwmL78 qTM1EnncT7vIRpfAqm66ey8ExLt/zUnqF3FiV49I= Date: Mon, 24 Feb 2025 19:31:23 -0800 To: mm-commits@vger.kernel.org,seanjc@google.com,pbonzini@redhat.com,binbin.wu@linux.intel.com,suhui@nfschina.com,akpm@linux-foundation.org From: Andrew Morton Subject: + include-linux-log2h-mark-is_power_of_2-with-__always_inline.patch added to mm-hotfixes-unstable branch Message-Id: <20250225033123.F2546C4CEE2@smtp.kernel.org> Precedence: bulk X-Mailing-List: mm-commits@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: The patch titled Subject: include/linux/log2.h: mark is_power_of_2() with __always_inline has been added to the -mm mm-hotfixes-unstable branch. Its filename is include-linux-log2h-mark-is_power_of_2-with-__always_inline.patch This patch will shortly appear at https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/include-linux-log2h-mark-is_power_of_2-with-__always_inline.patch This patch will later appear in the mm-hotfixes-unstable branch at git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm Before you just go and hit "reply", please: a) Consider who else should be cc'ed b) Prefer to cc a suitable mailing list as well c) Ideally: find the original patch on the mailing list and do a reply-to-all to that, adding suitable additional cc's *** Remember to use Documentation/process/submit-checklist.rst when testing your code *** The -mm tree is included into linux-next via the mm-everything branch at git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm and is updated there every 2-3 working days ------------------------------------------------------ From: Su Hui Subject: include/linux/log2.h: mark is_power_of_2() with __always_inline Date: Fri, 21 Feb 2025 15:16:25 +0800 When building kernel with randconfig, there is an error: In function `kvm_is_cr4_bit_set',inlined from `kvm_update_cpuid_runtime' at arch/x86/kvm/cpuid.c:310:9: include/linux/compiler_types.h:542:38: error: call to `__compiletime_assert_380' declared with attribute error: BUILD_BUG_ON failed: !is_power_of_2(cr4_bit). '!is_power_of_2(X86_CR4_OSXSAVE)' is False, but gcc treats is_power_of_2() as non-inline function and a compilation error happens. Fix this by marking is_power_of_2() with __always_inline. Link: https://lkml.kernel.org/r/20250221071624.1356899-1-suhui@nfschina.com Signed-off-by: Su Hui Cc: Binbin Wu Cc: Paolo Bonzini Cc: Sean Christopherson Signed-off-by: Andrew Morton --- include/linux/log2.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/include/linux/log2.h~include-linux-log2h-mark-is_power_of_2-with-__always_inline +++ a/include/linux/log2.h @@ -41,7 +41,7 @@ int __ilog2_u64(u64 n) * *not* considered a power of two. * Return: true if @n is a power of 2, otherwise false. */ -static inline __attribute__((const)) +static __always_inline __attribute__((const)) bool is_power_of_2(unsigned long n) { return (n != 0 && ((n & (n - 1)) == 0)); _ Patches currently in -mm which might be from suhui@nfschina.com are include-linux-log2h-mark-is_power_of_2-with-__always_inline.patch