From: Nathan Chancellor <nathan@kernel.org>
To: kernel test robot <lkp@intel.com>
Cc: Leonardo Bras <leobras@redhat.com>,
llvm@lists.linux.dev, kbuild-all@lists.01.org,
linux-kernel@vger.kernel.org, Paolo Bonzini <pbonzini@redhat.com>
Subject: Re: ld.lld: error: inline assembly requires more registers than available at line 523
Date: Wed, 4 May 2022 10:48:47 -0700 [thread overview]
Message-ID: <YnK8f7cqMoHxSi0C@dev-arch.thelio-3990X> (raw)
In-Reply-To: <202205020637.JVJo3blw-lkp@intel.com>
On Mon, May 02, 2022 at 06:29:38AM +0800, kernel test robot wrote:
> tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
> head: 672c0c5173427e6b3e2a9bbb7be51ceeec78093a
> commit: ba1f77c546966c12d86220d078e5838dcaeab348 x86/kvm: Fix compilation warning in non-x86_64 builds
> date: 2 months ago
> config: i386-randconfig-a012-20220502 (https://download.01.org/0day-ci/archive/20220502/202205020637.JVJo3blw-lkp@intel.com/config)
> compiler: clang version 15.0.0 (https://github.com/llvm/llvm-project 09325d36061e42b495d1f4c7e933e260eac260ed)
> reproduce (this is a W=1 build):
> wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
> chmod +x ~/bin/make.cross
> # https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=ba1f77c546966c12d86220d078e5838dcaeab348
> git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
> git fetch --no-tags linus master
> git checkout ba1f77c546966c12d86220d078e5838dcaeab348
> # save the config file
> mkdir build_dir && cp config build_dir/.config
> COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=i386 SHELL=/bin/bash
>
> If you fix the issue, kindly add following tag as appropriate
> Reported-by: kernel test robot <lkp@intel.com>
>
> All errors (new ones prefixed by >>):
>
> >> ld.lld: error: inline assembly requires more registers than available at line 523
> >> ld.lld: error: inline assembly requires more registers than available at line 523
>
I don't think this bisection result is correct; this error is visible at
v5.17-rc3, which this commit is based on. This is likely the same root
cause as https://github.com/ClangBuiltLinux/linux/issues/1589, just with
LTO. I'll reduce something down and comment there if it turns out to be
different.
Cheers,
Nathan
WARNING: multiple messages have this Message-ID (diff)
From: Nathan Chancellor <nathan@kernel.org>
To: kbuild-all@lists.01.org
Subject: Re: ld.lld: error: inline assembly requires more registers than available at line 523
Date: Wed, 04 May 2022 10:48:47 -0700 [thread overview]
Message-ID: <YnK8f7cqMoHxSi0C@dev-arch.thelio-3990X> (raw)
In-Reply-To: <202205020637.JVJo3blw-lkp@intel.com>
[-- Attachment #1: Type: text/plain, Size: 1984 bytes --]
On Mon, May 02, 2022 at 06:29:38AM +0800, kernel test robot wrote:
> tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
> head: 672c0c5173427e6b3e2a9bbb7be51ceeec78093a
> commit: ba1f77c546966c12d86220d078e5838dcaeab348 x86/kvm: Fix compilation warning in non-x86_64 builds
> date: 2 months ago
> config: i386-randconfig-a012-20220502 (https://download.01.org/0day-ci/archive/20220502/202205020637.JVJo3blw-lkp(a)intel.com/config)
> compiler: clang version 15.0.0 (https://github.com/llvm/llvm-project 09325d36061e42b495d1f4c7e933e260eac260ed)
> reproduce (this is a W=1 build):
> wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
> chmod +x ~/bin/make.cross
> # https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=ba1f77c546966c12d86220d078e5838dcaeab348
> git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
> git fetch --no-tags linus master
> git checkout ba1f77c546966c12d86220d078e5838dcaeab348
> # save the config file
> mkdir build_dir && cp config build_dir/.config
> COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=i386 SHELL=/bin/bash
>
> If you fix the issue, kindly add following tag as appropriate
> Reported-by: kernel test robot <lkp@intel.com>
>
> All errors (new ones prefixed by >>):
>
> >> ld.lld: error: inline assembly requires more registers than available at line 523
> >> ld.lld: error: inline assembly requires more registers than available at line 523
>
I don't think this bisection result is correct; this error is visible at
v5.17-rc3, which this commit is based on. This is likely the same root
cause as https://github.com/ClangBuiltLinux/linux/issues/1589, just with
LTO. I'll reduce something down and comment there if it turns out to be
different.
Cheers,
Nathan
next prev parent reply other threads:[~2022-05-04 17:48 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-05-01 22:29 ld.lld: error: inline assembly requires more registers than available at line 523 kernel test robot
2022-05-04 17:48 ` Nathan Chancellor [this message]
2022-05-04 17:48 ` Nathan Chancellor
2022-05-04 18:13 ` Leonardo Bras Soares Passos
2022-05-04 18:13 ` Leonardo Bras Soares Passos
2022-05-04 22:32 ` Nathan Chancellor
2022-05-04 22:32 ` Nathan Chancellor
2022-05-06 16:49 ` Nathan Chancellor
2022-05-06 16:49 ` Nathan Chancellor
2022-05-06 8:18 ` [kbuild-all] " Chen, Rong A
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=YnK8f7cqMoHxSi0C@dev-arch.thelio-3990X \
--to=nathan@kernel.org \
--cc=kbuild-all@lists.01.org \
--cc=leobras@redhat.com \
--cc=linux-kernel@vger.kernel.org \
--cc=lkp@intel.com \
--cc=llvm@lists.linux.dev \
--cc=pbonzini@redhat.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.