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 084E839879; Wed, 17 Jul 2024 08:17:09 +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=1721204230; cv=none; b=EFXsb3KPnd476MVw3iY0BQOQqx3WT3Au0gn5nREyZFqATFRX70YkdnEX4uqbvInPj9CmWesntUMzk64WbNjt1ikd4Jz4Ja4eraWRBFoKV9k3+Pr6FM4N0Yktv/J8Q3RvsEQRmzfelH0UehL7Cz08k2K4aQGJyRtmCMTC2I34Hyc= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1721204230; c=relaxed/simple; bh=rSLQAE5R5XyJVKc3bL13vDnmqk+hn+xn+GeAR87Ppeo=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=ukOWs56YaBWqp3xxHPmLFbhUY2p/BJ+ow5apH0Ie8hNg72K+uGcgLezX785+KWf6iK+DqUKBsdaLzz55BmwqvdtLU3okqsqQ/RkUjS18AD8qiAKntzrp+WeszMBTEzWid48Hbeur8kaCW/dgzr8e+n4TRmo07rxA7BblxOBw4VM= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=Vs9bfBue; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="Vs9bfBue" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 77758C32782; Wed, 17 Jul 2024 08:17:09 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1721204229; bh=rSLQAE5R5XyJVKc3bL13vDnmqk+hn+xn+GeAR87Ppeo=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=Vs9bfBuepk0tW64t9UP6JapsBWLgEUwmlAc2KyxVx4NUGCm3YuGnM5hmpwDeUHVd3 v4a/qhFqoqRn8LrZSc5qr2WOIy3akxIVyaDrwOHmMcSG++1/H6EmHJ6+HQL+Sa97I2 XCM3fMvjsbLDQvOIj9gfmTjrdSulOUGeQfgN1viWZHi2xxiDFLsuZNrhZ6+TTaTs2b hS69zFhzGSEZnoRNaTpQos2uv049YlI0vpcU5Kuv6PTB79BRIrqWYgY3IWOS379p64 9spyEkXtHrFY6CWh1Jh6vJHq40b4Ah5aBshIvPxYpgpoH9eCLmLYkTDJYudivKqRA1 TdOlhPvTxLW7w== Received: from johan by xi.lan with local (Exim 4.97.1) (envelope-from ) id 1sTzqZ-000000000I0-08bF; Wed, 17 Jul 2024 10:17:11 +0200 Date: Wed, 17 Jul 2024 10:17:11 +0200 From: Johan Hovold To: Arnd Bergmann Cc: Linus Torvalds , Masahiro Yamada , linux-kernel@vger.kernel.org, Linux-Arch , linux-arm-kernel@lists.infradead.org, "linux-csky@vger.kernel.org" , linux-hexagon@vger.kernel.org, loongarch@lists.linux.dev, "linux-openrisc@vger.kernel.org" , linux-snps-arc@lists.infradead.org Subject: Re: [GIT PULL] asm-generic updates for 6.11 Message-ID: References: <2b6336d1-34e0-48dd-b901-7b5208045597@app.fastmail.com> Precedence: bulk X-Mailing-List: linux-arch@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: On Wed, Jul 17, 2024 at 10:01:10AM +0200, Arnd Bergmann wrote: > On Wed, Jul 17, 2024, at 08:41, Johan Hovold wrote: > > FWIW, I noticed this last Friday as well when I did a few builds of > > linux-next and every change I made triggered what appeared to be a full > > rebuild of the tree. > > > > This was with a trimmed config [1] and separate build tree (tmpfs). > > Thanks, that makes it quicker to try out. I'm now using > your config to do more testing. I still don't see it with > a normal build though. > > I do see that setting the timestamp of syscall.tbl to > a future date does result in always rebuilding everything, > but I don't think that is what you are seeing, since that > also produces a warning from make: > > arnd@studio:~/arm-soc/build/bisect$ touch -t 202501010000 arch/x86/entry/syscalls/syscall_64.tbl > arnd@studio:~/arm-soc/build/bisect$ make ARCH=x86 CROSS_COMPILE=x86_64-linux- > make[2]: Warning: File 'arch/x86/entry/syscalls/syscall_64.tbl' has modification time 14483017 s in the future > SYSHDR arch/x86/include/generated/uapi/asm/unistd_64.h > SYSHDR arch/x86/include/generated/uapi/asm/unistd_x32.h > SYSHDR arch/x86/include/generated/asm/unistd_64_x32.h > SYSTBL arch/x86/include/generated/asm/syscalls_64.h > make[2]: warning: Clock skew detected. Your build may be incomplete. Yeah, that's not something I noticed at least (and I assume I would have). And I only did aarch64 builds on a 6.9 x86_64 host (make 4.4.1). Johan