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([2a02:768:2307:40d6::45a]) by smtp.gmail.com with ESMTPSA id j14sm1265961edl.21.2021.09.30.03.13.08 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Thu, 30 Sep 2021 03:13:09 -0700 (PDT) Subject: Re: [PATCH v4 10/11] microblaze: Use is_kernel_text() helper To: Kefeng Wang , arnd@arndb.de, linux-arch@vger.kernel.org, linux-kernel@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, rostedt@goodmis.org, mingo@redhat.com, davem@davemloft.net, ast@kernel.org, ryabinin.a.a@gmail.com, akpm@linux-foundation.org Cc: mpe@ellerman.id.au, benh@kernel.crashing.org, paulus@samba.org, bpf@vger.kernel.org, linux-alpha@vger.kernel.org, Christophe Leroy References: <20210930071143.63410-1-wangkefeng.wang@huawei.com> <20210930071143.63410-11-wangkefeng.wang@huawei.com> From: Michal Simek Message-ID: <2a23c06c-62e5-d4f8-4c7c-4e5c055a9e69@monstr.eu> Date: Thu, 30 Sep 2021 12:13:08 +0200 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101 Thunderbird/78.14.0 MIME-Version: 1.0 In-Reply-To: <20210930071143.63410-11-wangkefeng.wang@huawei.com> Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 7bit Precedence: bulk List-ID: X-Mailing-List: bpf@vger.kernel.org On 9/30/21 9:11 AM, Kefeng Wang wrote: > Use is_kernel_text() helper to simplify code. > > Cc: Michal Simek > Signed-off-by: Kefeng Wang > --- > arch/microblaze/mm/pgtable.c | 3 ++- > 1 file changed, 2 insertions(+), 1 deletion(-) > > diff --git a/arch/microblaze/mm/pgtable.c b/arch/microblaze/mm/pgtable.c > index c1833b159d3b..9f73265aad4e 100644 > --- a/arch/microblaze/mm/pgtable.c > +++ b/arch/microblaze/mm/pgtable.c > @@ -34,6 +34,7 @@ > #include > #include > #include > +#include > > #include > #include > @@ -171,7 +172,7 @@ void __init mapin_ram(void) > for (s = 0; s < lowmem_size; s += PAGE_SIZE) { > f = _PAGE_PRESENT | _PAGE_ACCESSED | > _PAGE_SHARED | _PAGE_HWEXEC; > - if ((char *) v < _stext || (char *) v >= _etext) > + if (!is_kernel_text(v)) > f |= _PAGE_WRENABLE; > else > /* On the MicroBlaze, no user access > Acked-by: Michal Simek Thanks, Michal -- Michal Simek, Ing. (M.Eng), OpenPGP -> KeyID: FE3D1F91 w: www.monstr.eu p: +42-0-721842854 Maintainer of Linux kernel - Xilinx Microblaze Maintainer of Linux kernel - Xilinx Zynq ARM and ZynqMP ARM64 SoCs U-Boot custodian - Xilinx Microblaze/Zynq/ZynqMP/Versal SoCs