From: Paul Burton <paul.burton@mips.com>
To: Nathan Chancellor <natechancellor@gmail.com>
Cc: Ralf Baechle <ralf@linux-mips.org>,
Paul Burton <pburton@wavecomp.com>,
James Hogan <jhogan@kernel.org>,
Nick Desaulniers <ndesaulniers@google.com>,
"linux-mips@vger.kernel.org" <linux-mips@vger.kernel.org>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
"clang-built-linux@googlegroups.com"
<clang-built-linux@googlegroups.com>,
Nathan Chancellor <natechancellor@gmail.com>,
"linux-mips@vger.kernel.org" <linux-mips@vger.kernel.org>
Subject: Re: [PATCH 5/5] MIPS: tlbex: Explicitly cast _PAGE_NO_EXEC to a boolean
Date: Mon, 12 Aug 2019 04:47:24 +0000
Message-ID: <MWHPR2201MB1277133CC3B57F621F359C42C1D30@MWHPR2201MB1277.namprd22.prod.outlook.com> (raw)
In-Reply-To: <20190812033120.43013-6-natechancellor@gmail.com>
Hello,
Nathan Chancellor wrote:
> clang warns:
>
> arch/mips/mm/tlbex.c:634:19: error: use of logical '&&' with constant
> operand [-Werror,-Wconstant-logical-operand]
> if (cpu_has_rixi && _PAGE_NO_EXEC) {
> ^ ~~~~~~~~~~~~~
> arch/mips/mm/tlbex.c:634:19: note: use '&' for a bitwise operation
> if (cpu_has_rixi && _PAGE_NO_EXEC) {
> ^~
> &
> arch/mips/mm/tlbex.c:634:19: note: remove constant to silence this
> warning
> if (cpu_has_rixi && _PAGE_NO_EXEC) {
> ~^~~~~~~~~~~~~~~~
> 1 error generated.
>
> Explicitly cast this value to a boolean so that clang understands we
> intend for this to be a non-zero value.
>
> Fixes: 00bf1c691d08 ("MIPS: tlbex: Avoid placing software PTE bits in Entry* PFN fields")
Applied to mips-next.
> commit c59ae0a10551
> https://git.kernel.org/mips/c/c59ae0a10551
>
> Fixes: 00bf1c691d08 ("MIPS: tlbex: Avoid placing software PTE bits in Entry* PFN fields")
> Link: https://github.com/ClangBuiltLinux/linux/issues/609
> Signed-off-by: Nathan Chancellor <natechancellor@gmail.com>
> Signed-off-by: Paul Burton <paul.burton@mips.com>
Thanks,
Paul
[ This message was auto-generated; if you believe anything is incorrect
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prev parent reply index
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-08-12 3:31 [PATCH 0/5] Clang build fixes for MIPS Nathan Chancellor
2019-08-12 3:31 ` [PATCH 1/5] MIPS: Don't use bc_false uninitialized in __mm_isBranchInstr Nathan Chancellor
2019-08-12 4:47 ` Paul Burton
2019-08-12 3:31 ` [PATCH 2/5] MIPS/ptrace: Update mips_get_syscall_arg's return type Nathan Chancellor
2019-08-12 4:47 ` Paul Burton
2019-08-12 3:31 ` [PATCH 3/5] lib/mpi: Fix for building for MIPS32 with Clang Nathan Chancellor
2019-08-12 5:23 ` Nathan Chancellor
2019-08-12 5:26 ` Nathan Chancellor
2019-08-12 12:28 ` Herbert Xu
2019-08-12 17:58 ` Paul Burton
2019-08-12 7:35 ` Jussi Kivilinna
2019-08-12 17:14 ` Nathan Chancellor
2019-08-12 19:40 ` Jussi Kivilinna
2019-08-12 19:45 ` Nathan Chancellor
2019-08-12 3:31 ` [PATCH 4/5] lib/mpi: Fix for building for MIPS64 " Nathan Chancellor
2019-08-12 5:25 ` Nathan Chancellor
2019-08-12 17:42 ` Nick Desaulniers
2019-08-12 17:45 ` Nathan Chancellor
2019-08-12 3:31 ` [PATCH 5/5] MIPS: tlbex: Explicitly cast _PAGE_NO_EXEC to a boolean Nathan Chancellor
2019-08-12 4:47 ` Paul Burton [this message]
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