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Mon, 10 Dec 2018 14:29:07 -0800 (PST) Received: by aurora.jms.id.au (sSMTP sendmail emulation); Tue, 11 Dec 2018 08:59:01 +1030 From: Joel Stanley To: linuxppc-dev@lists.ozlabs.org Subject: [PATCH v3 1/3] powerpc: Discard more sections in linker script Date: Tue, 11 Dec 2018 08:58:52 +1030 Message-Id: <20181210222854.21156-2-joel@jms.id.au> X-Mailer: git-send-email 2.19.1 In-Reply-To: <20181210222854.21156-1-joel@jms.id.au> References: <20181210222854.21156-1-joel@jms.id.au> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-BeenThere: linuxppc-dev@lists.ozlabs.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Stephen Rothwell , Alan Modra Errors-To: linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org Sender: "Linuxppc-dev" Building the ppc64 kernel with a modern binutils results in this warning: powerpc64le-linux-gnu-ld: warning: orphan section `.gnu.hash' from `linker stubs' being placed in section `.gnu.hash' Alan Modra explains: > .gnu.hash, like .hash, is used by glibc ld.so for dynamic symbol > lookup. I imagine you don't need either section in a kernel, so > discarding both sounds reasonable. Likely you could discard .interp > and .dynstr too, and .dynsym when !CONFIG_PPC32. Reported-by: Stephen Rothwell Signed-off-by: Joel Stanley --- See https://lore.kernel.org/lkml/CACPK8Xft3n5KkpTjN3=7_VUCXHFcK7mxvZm2Rrqu7tppcBoyOg@mail.gmail.com/T/#m58532c86cf0c7b4fb01cc1fe724e48d4c7d8e4a7 v3: Add dynstr hunk to this patch (it was incorrectly left in patch 2) --- arch/powerpc/kernel/vmlinux.lds.S | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/arch/powerpc/kernel/vmlinux.lds.S b/arch/powerpc/kernel/vmlinux.lds.S index 434581bcd5b4..779b8b3075a1 100644 --- a/arch/powerpc/kernel/vmlinux.lds.S +++ b/arch/powerpc/kernel/vmlinux.lds.S @@ -273,14 +273,11 @@ SECTIONS #endif *(.dynsym) } - .dynstr : AT(ADDR(.dynstr) - LOAD_OFFSET) { *(.dynstr) } .dynamic : AT(ADDR(.dynamic) - LOAD_OFFSET) { __dynamic_start = .; *(.dynamic) } - .hash : AT(ADDR(.hash) - LOAD_OFFSET) { *(.hash) } - .interp : AT(ADDR(.interp) - LOAD_OFFSET) { *(.interp) } .rela.dyn : AT(ADDR(.rela.dyn) - LOAD_OFFSET) { __rela_dyn_start = .; @@ -388,5 +385,8 @@ SECTIONS *(.gnu.version*) *(.gnu.attributes) *(.eh_frame) + *(.hash .gnu.hash) + *(.interp) + *(.dynstr) } } -- 2.19.1