linux-kernel - Re: [PATCH] KVM: arm64: nVHE: gen-hyprel: Silent build warnings

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Message-ID: <86set55yca.wl-maz@kernel.org>
Date: Wed, 09 Oct 2024 12:07:17 +0100
From: Marc Zyngier <maz@...nel.org>
To: Tianjia Zhang <tianjia.zhang@...ux.alibaba.com>
Cc: Oliver Upton <oliver.upton@...ux.dev>,	Joey Gouly <joey.gouly@....com>,
	Suzuki K Poulose <suzuki.poulose@....com>,	Zenghui Yu
 <yuzenghui@...wei.com>,	Catalin Marinas <catalin.marinas@....com>,	Will
 Deacon <will@...nel.org>,	Nathan Chancellor <nathan@...nel.org>,	Nick
 Desaulniers <ndesaulniers@...gle.com>,	Bill Wendling <morbo@...gle.com>,
	Justin Stitt <justinstitt@...gle.com>,	Pierre-Clément
 Tosi <ptosi@...gle.com>,	linux-arm-kernel@...ts.infradead.org,
	kvmarm@...ts.linux.dev,	linux-kernel@...r.kernel.org,	llvm@...ts.linux.dev
Subject: Re: [PATCH] KVM: arm64: nVHE: gen-hyprel: Silent build warnings

On Wed, 09 Oct 2024 09:57:51 +0100,
Tianjia Zhang <tianjia.zhang@...ux.alibaba.com> wrote:
> 
> This patch silent the some mismatch format build warnings
> with clang, like:
> 
>   arch/arm64/kvm/hyp/nvhe/gen-hyprel.c:233:2: warning: format specifies
>   type 'unsigned long' but the argument has type 'Elf64_Off'
>   (aka 'unsigned long long') [-Wformat]
>     233 |         assert_ne(off, 0UL, "%lu");
>         |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
>         |                              %llu
>   arch/arm64/kvm/hyp/nvhe/gen-hyprel.c:193:34: note: expanded from macro 'assert_ne'
>     193 | #define assert_ne(lhs, rhs, fmt)        assert_op(lhs, rhs, fmt, !=)
>         |                                         ^~~~~~~~~~~~~~~~~~~~~~~~~~~~
>   arch/arm64/kvm/hyp/nvhe/gen-hyprel.c:188:19: note: expanded from macro 'assert_op'
>     187 |                                 " failed (lhs=" fmt ", rhs=" fmt        \
>         |                                                 ~~~
>     188 |                                 ", line=%d)", _lhs, _rhs, __LINE__);    \
>         |                                               ^~~~
>   arch/arm64/kvm/hyp/nvhe/gen-hyprel.c:167:17: note: expanded from macro 'fatal_error'
>     166 |                 fprintf(stderr, "error: %s: " fmt "\n",                 \
>         |                                               ~~~
>     167 |                         elf.path, ## __VA_ARGS__);                      \
>         |                                      ^~~~~~~~~~~
> 
> Signed-off-by: Tianjia Zhang <tianjia.zhang@...ux.alibaba.com>

I don't see these warnings. What version of LLVM are you using?

	M.

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