From: Alexey Dobriyan <adobriyan@gmail.com>
To: Nathan Chancellor <nathan@kernel.org>
Cc: akpm@linux-foundation.org, linux-kernel@vger.kernel.org,
linux-arch@vger.kernel.org, masahiroy@kernel.org,
Catalin Marinas <catalin.marinas@arm.com>,
Will Deacon <will@kernel.org>,
linux-arm-kernel@lists.infradead.org,
Michael Ellerman <mpe@ellerman.id.au>,
Benjamin Herrenschmidt <benh@kernel.crashing.org>,
Paul Mackerras <paulus@samba.org>,
linuxppc-dev@lists.ozlabs.org
Subject: Re: [PATCH 3/3] isystem: delete global -isystem compile option
Date: Mon, 2 Aug 2021 23:32:02 +0300 [thread overview]
Message-ID: <YQhWQkbN+pe354RW@localhost.localdomain> (raw)
In-Reply-To: <YQg2+C4Z98BMFucg@archlinux-ax161>
On Mon, Aug 02, 2021 at 11:18:32AM -0700, Nathan Chancellor wrote:
> On Sun, Aug 01, 2021 at 11:13:36PM +0300, Alexey Dobriyan wrote:
> > In theory, it enables "leakage" of userspace headers into kernel which
> > may present licensing problem.
> >
> > In practice, only stdarg.h was used, stdbool.h is trivial and SIMD
> > intrinsics are contained to a few architectures and aren't global
> > problem.
> >
> > In general, kernel is very self contained code and -isystem removal
> > will further isolate it from Ring Threeland influence.
> >
> > nds32 keeps -isystem globally due to intrisics used in entrenched header.
> >
> > -isystem is selectively reenabled for some files.
> >
> > Not compile tested on hexagon.
>
> With this series on top of v5.14-rc4 and a tangential patch to fix
> another issue, ARCH=hexagon defconfig and allmodconfig show no issues.
>
> Tested-by: Nathan Chancellor <nathan@kernel> # build (hexagon)
Oh wow, small miracle. Thank you!
Where can I find a cross-compiler? This link doesn't seem to have one
https://mirrors.edge.kernel.org/pub/tools/crosstool/files/bin/x86_64/11.1.0/
next prev parent reply other threads:[~2021-08-02 20:32 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-08-01 20:13 [PATCH 1/3] isystem: trim/fixup stdarg.h and other headers Alexey Dobriyan
2021-08-01 20:13 ` [PATCH 2/3] isystem: ship and use stdarg.h Alexey Dobriyan
2021-08-03 7:14 ` Ard Biesheuvel
2021-08-17 1:30 ` Masahiro Yamada
2021-08-06 13:00 ` Rafael J. Wysocki
2021-08-01 20:13 ` [PATCH 3/3] isystem: delete global -isystem compile option Alexey Dobriyan
2021-08-01 21:32 ` Segher Boessenkool
2021-08-02 6:42 ` Alexey Dobriyan
2021-08-02 16:47 ` Segher Boessenkool
2021-08-02 20:30 ` Alexey Dobriyan
2021-08-02 21:42 ` Segher Boessenkool
2021-08-02 1:30 ` kernel test robot
2021-08-02 18:18 ` Nathan Chancellor
2021-08-02 20:32 ` Alexey Dobriyan [this message]
2021-08-02 20:38 ` Nathan Chancellor
2021-08-02 0:21 ` [PATCH 1/3] isystem: trim/fixup stdarg.h and other headers kernel test robot
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