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Tue, 12 Jan 2021 08:27:10 -0800 (PST) Date: Tue, 12 Jan 2021 09:27:09 -0700 From: Nathan Chancellor To: Arnd Bergmann Subject: Re: [PATCH] ARM: fix link warning with XIP + frame-pointer Message-ID: <20210112162709.GA3373722@ubuntu-m3-large-x86> References: <20210112154658.850192-1-arnd@kernel.org> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <20210112154658.850192-1-arnd@kernel.org> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20210112_112720_348672_1EE45241 X-CRM114-Status: GOOD ( 20.24 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Vladimir Murzin , Kees Cook , Arnd Bergmann , Catalin Marinas , Nick Desaulniers , Russell King , linux-kernel@vger.kernel.org, clang-built-linux@googlegroups.com, linux-arm-kernel@lists.infradead.org Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org On Tue, Jan 12, 2021 at 04:46:40PM +0100, Arnd Bergmann wrote: > From: Arnd Bergmann > > When frame pointers are used instead of the ARM unwinder, > and the kernel is built using clang with an external assembler > and CONFIG_XIP_KERNEL, every file produces two warnings > like: > > arm-linux-gnueabi-ld: warning: orphan section `.ARM.extab' from `net/mac802154/util.o' being placed in section `.ARM.extab' > arm-linux-gnueabi-ld: warning: orphan section `.ARM.exidx' from `net/mac802154/util.o' being placed in section `.ARM.exidx' > > The same fix was already merged for the normal (non-XIP) > linker script, with a longer description. > > Fixes: c39866f268f8 ("arm/build: Always handle .ARM.exidx and .ARM.extab sections") > Signed-off-by: Arnd Bergmann Reviewed-by: Nathan Chancellor > --- > arch/arm/kernel/vmlinux-xip.lds.S | 4 ++++ > 1 file changed, 4 insertions(+) > > diff --git a/arch/arm/kernel/vmlinux-xip.lds.S b/arch/arm/kernel/vmlinux-xip.lds.S > index 4d0b0cd9222e..ddb70c65d525 100644 > --- a/arch/arm/kernel/vmlinux-xip.lds.S > +++ b/arch/arm/kernel/vmlinux-xip.lds.S > @@ -43,6 +43,10 @@ SECTIONS > ARM_DISCARD > *(.alt.smp.init) > *(.pv_table) > +#ifndef CONFIG_ARM_UNWIND > + *(.ARM.exidx) *(.ARM.exidx.*) > + *(.ARM.extab) *(.ARM.extab.*) > +#endif > } > > . = XIP_VIRT_ADDR(CONFIG_XIP_PHYS_ADDR); > -- > 2.29.2 > _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel