From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 226B11D13A; Mon, 18 Dec 2023 14:03:52 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="t/qBI27v" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 9AC6CC433C8; Mon, 18 Dec 2023 14:03:51 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1702908232; bh=0gJXVNIPKaVhnQf0xEIynHeSKslS74770FWH9BfZWD0=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=t/qBI27v6cToOGqStL/rNslajrNEkuTYJq99VC9nZ4bwIIOUf0dgtFkBbTmJ/uuSN 0n0lE2P3iAhyBBg5COAL01C5P3i23kyOsvw2vSSJWSIi84Z9I/qnvbjJTJLhpDSZ8B 6cgkoE2p9HMtMFB8jRx09zpGMqOFB785ST/IxYoc= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Nathan Chancellor , WANG Rui , Huacai Chen , Sasha Levin Subject: [PATCH 6.6 102/166] LoongArch: Record pc instead of offset in la_abs relocation Date: Mon, 18 Dec 2023 14:51:08 +0100 Message-ID: <20231218135109.568316073@linuxfoundation.org> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20231218135104.927894164@linuxfoundation.org> References: <20231218135104.927894164@linuxfoundation.org> User-Agent: quilt/0.67 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: stable@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 6.6-stable review patch. If anyone has any objections, please let me know. ------------------ From: WANG Rui [ Upstream commit aa0cbc1b506b090c3a775b547c693ada108cc0d7 ] To clarify, the previous version functioned flawlessly. However, it's worth noting that the LLVM's LoongArch backend currently lacks support for cross-section label calculations. With this patch, we enable the use of clang to compile relocatable kernels. Tested-by: Nathan Chancellor Signed-off-by: WANG Rui Signed-off-by: Huacai Chen Signed-off-by: Sasha Levin --- arch/loongarch/include/asm/asmmacro.h | 3 +-- arch/loongarch/include/asm/setup.h | 2 +- arch/loongarch/kernel/relocate.c | 2 +- 3 files changed, 3 insertions(+), 4 deletions(-) diff --git a/arch/loongarch/include/asm/asmmacro.h b/arch/loongarch/include/asm/asmmacro.h index c9544f358c339..655db7d7a4279 100644 --- a/arch/loongarch/include/asm/asmmacro.h +++ b/arch/loongarch/include/asm/asmmacro.h @@ -609,8 +609,7 @@ lu32i.d \reg, 0 lu52i.d \reg, \reg, 0 .pushsection ".la_abs", "aw", %progbits - 768: - .dword 768b-766b + .dword 766b .dword \sym .popsection #endif diff --git a/arch/loongarch/include/asm/setup.h b/arch/loongarch/include/asm/setup.h index a0bc159ce8bdc..ee52fb1e99631 100644 --- a/arch/loongarch/include/asm/setup.h +++ b/arch/loongarch/include/asm/setup.h @@ -25,7 +25,7 @@ extern void set_merr_handler(unsigned long offset, void *addr, unsigned long len #ifdef CONFIG_RELOCATABLE struct rela_la_abs { - long offset; + long pc; long symvalue; }; diff --git a/arch/loongarch/kernel/relocate.c b/arch/loongarch/kernel/relocate.c index 6c3eff9af9fb1..288b739ca88dd 100644 --- a/arch/loongarch/kernel/relocate.c +++ b/arch/loongarch/kernel/relocate.c @@ -52,7 +52,7 @@ static inline void __init relocate_absolute(long random_offset) for (p = begin; (void *)p < end; p++) { long v = p->symvalue; uint32_t lu12iw, ori, lu32id, lu52id; - union loongarch_instruction *insn = (void *)p - p->offset; + union loongarch_instruction *insn = (void *)p->pc; lu12iw = (v >> 12) & 0xfffff; ori = v & 0xfff; -- 2.43.0