diff --git a/br-ext-chip-sigmastar/board/infinity3/kernel/patches/20_fix_gcc8.patch b/br-ext-chip-sigmastar/board/infinity3/kernel/patches/20_fix_gcc8.patch new file mode 120000 index 00000000..66ce4243 --- /dev/null +++ b/br-ext-chip-sigmastar/board/infinity3/kernel/patches/20_fix_gcc8.patch @@ -0,0 +1 @@ +../../../../../patches/linux/3.10.x/gcc8_err_encountered.patch \ No newline at end of file diff --git a/br-ext-chip-sigmastar/board/infinity3/kernel/patches/30_fix_vfp-force-non-conditional.patch b/br-ext-chip-sigmastar/board/infinity3/kernel/patches/30_fix_vfp-force-non-conditional.patch new file mode 120000 index 00000000..672eef53 --- /dev/null +++ b/br-ext-chip-sigmastar/board/infinity3/kernel/patches/30_fix_vfp-force-non-conditional.patch @@ -0,0 +1 @@ +../../../../../patches/linux/3.18.x/ARM-vfp-force-non-conditional-encoding-for-external-Thumb2-tail-call.patch \ No newline at end of file diff --git a/patches/linux/3.18.x/ARM-vfp-force-non-conditional-encoding-for-external-Thumb2-tail-call.patch b/patches/linux/3.18.x/ARM-vfp-force-non-conditional-encoding-for-external-Thumb2-tail-call.patch new file mode 100644 index 00000000..6bdf3125 --- /dev/null +++ b/patches/linux/3.18.x/ARM-vfp-force-non-conditional-encoding-for-external-Thumb2-tail-call.patch @@ -0,0 +1,149 @@ +From patchwork Thu Sep 17 06:19:48 2020 +Content-Type: text/plain; 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+Received: from localhost ([::1] helo=merlin.infradead.org) + by merlin.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) + id 1kInGx-0003LG-UJ; Thu, 17 Sep 2020 06:20:00 +0000 +Received: from mail.kernel.org ([198.145.29.99]) + by merlin.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) + id 1kInGv-0003Kq-Ma + for linux-arm-kernel@lists.infradead.org; Thu, 17 Sep 2020 06:19:58 +0000 +Received: from e123331-lin.nice.arm.com (unknown [91.140.120.15]) + (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) + (No client certificate requested) + by mail.kernel.org (Postfix) with ESMTPSA id 9D4CD20707; + Thu, 17 Sep 2020 06:19:54 +0000 (UTC) +DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; + s=default; t=1600323596; + bh=ziD1S262d4AhvP0HlkLo4WCfu8gkBuZJo+18GfJki9c=; + h=From:To:Cc:Subject:Date:From; + b=Dfh0zH+QgFdYO0gLoboRtZhySJAl+bjUHgIo8kCQVGjvzCWF7i2BSPEKZiFbSIEGm + fFSTDES62ApoJHYwFnIAtXQMpjV7DYbIoeuFScbKPT4lMxCYpo/X7ffl/+OEWMkRAK + 4Unu4CMR1SVL+8a4DZhSoF74nrvGspRqV5Nh1iTI= +From: Ard Biesheuvel +To: linux-arm-kernel@lists.infradead.org +Subject: [PATCH] ARM: vfp: force non-conditional encoding for external Thumb2 + tail call +Date: Thu, 17 Sep 2020 09:19:48 +0300 +Message-Id: <20200917061948.12403-1-ardb@kernel.org> +X-Mailer: git-send-email 2.17.1 +X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 +X-CRM114-CacheID: sfid-20200917_021957_811961_126E0A54 +X-CRM114-Status: GOOD ( 13.51 ) +X-Spam-Score: -8.2 (--------) +X-Spam-Report: SpamAssassin version 3.4.4 on merlin.infradead.org summary: + Content analysis details: (-8.2 points) + pts rule name description + ---- ---------------------- + -------------------------------------------------- + -5.0 RCVD_IN_DNSWL_HI RBL: Sender listed at https://www.dnswl.org/, + high trust [198.145.29.99 listed in list.dnswl.org] + 0.0 SPF_HELO_NONE SPF: HELO does not publish an SPF Record + -0.0 SPF_PASS SPF: sender matches SPF record + 0.1 DKIM_SIGNED Message has a DKIM or DK signature, + not necessarily + valid + -0.1 DKIM_VALID_EF Message has a valid DKIM or DK signature from + envelope-from domain + -0.1 DKIM_VALID_AU Message has a valid DKIM or DK signature from + author's domain + -0.1 DKIM_VALID Message has at least one valid DKIM or DK signature + -3.0 DKIMWL_WL_HIGH DKIMwl.org - Whitelisted High sender +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: ndesaulniers@google.com, linux@armlinux.org.uk, stable@vger.kernel.org, + Ard Biesheuvel +MIME-Version: 1.0 +Sender: "linux-arm-kernel" +Errors-To: + linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org + +Nick reports that the following error is produced in some cases when +using GCC+ld.bfd to build the ARM defconfig with Thumb2 enabled: + + arch/arm/vfp/vfphw.o: in function `vfp_support_entry': + (.text+0xa): relocation truncated to fit: R_ARM_THM_JUMP19 against + symbol `vfp_kmode_exception' defined in .text.unlikely section in + arch/arm/vfp/vfpmodule.o + + $ arm-linux-gnueabihf-ld --version + GNU ld (GNU Binutils for Debian) 2.34 + +Generally, the linker should be able to fix up out of range branches by +emitting veneers, but apparently, it fails to do so in this particular +case, i.e., a conditional 'tail call' to vfp_kmode_exception(), which +is not defined in the same object file. + +So let's force the use of a non-conditional encoding of the B instruction, +which has more space for an immediate offset. + +Cc: +Reported-by: Nick Desaulniers +Tested-by: Nick Desaulniers +Signed-off-by: Ard Biesheuvel +--- + arch/arm/vfp/vfphw.S | 1 + + 1 file changed, 1 insertion(+) + +diff --git a/arch/arm/vfp/vfphw.S b/arch/arm/vfp/vfphw.S +index 4fcff9f59947..f1468702fbc9 100644 +--- a/arch/arm/vfp/vfphw.S ++++ b/arch/arm/vfp/vfphw.S +@@ -82,6 +82,7 @@ ENTRY(vfp_support_entry) + ldr r3, [sp, #S_PSR] @ Neither lazy restore nor FP exceptions + and r3, r3, #MODE_MASK @ are supported in kernel mode + teq r3, #USR_MODE ++THUMB( it ne ) + bne vfp_kmode_exception @ Returns through lr + + VFPFMRX r1, FPEXC @ Is the VFP enabled?