linux-kernel - Re: [PATCH v2] lib/Kconfig.debug: Add check for non-constant .{s,u}leb128 support to DWARF5

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Message-Id: <20221016172815.f5a5f1f86af7ff1937a2e273@linux-foundation.org>
Date:   Sun, 16 Oct 2022 17:28:15 -0700
From:   Andrew Morton <akpm@...ux-foundation.org>
To:     Nathan Chancellor <nathan@...nel.org>
Cc:     Masahiro Yamada <masahiroy@...nel.org>,
        Nick Desaulniers <ndesaulniers@...gle.com>,
        Tom Rix <trix@...hat.com>, Palmer Dabbelt <palmer@...belt.com>,
        Conor Dooley <conor@...nel.org>, linux-kbuild@...r.kernel.org,
        linux-riscv@...ts.infradead.org, linux-kernel@...r.kernel.org,
        patches@...ts.linux.dev, llvm@...ts.linux.dev
Subject: Re: [PATCH v2] lib/Kconfig.debug: Add check for non-constant
 .{s,u}leb128 support to DWARF5

On Fri, 14 Oct 2022 13:42:11 -0700 Nathan Chancellor <nathan@...nel.org> wrote:

> When building with a RISC-V kernel with DWARF5 debug info using clang
> and the GNU assembler, several instances of the following error appear:
> 
>   /tmp/vgettimeofday-48aa35.s:2963: Error: non-constant .uleb128 is not supported

hm, which kernels want this?

I could merge it for 6.1, which seems suitable.  If we want it
backported into earlier kernels then a Fixes: would be nice, to prevent
it from being ported back further than necessary.