From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 79855C433FE for ; Wed, 9 Mar 2022 15:58:30 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:Message-Id:Date:Subject:Cc :To:From:Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:In-Reply-To:References: List-Owner; bh=FmMak7XE2vZfHxOes/1QvaT4LZeaivmNHV0XOh1vt90=; b=oOXm3l9P00Ayis vj6D7iuMJ75xfLhSoxYc8Q9CUhpnSytUONYFvB+dhmlxALsv7ZfYdSMdwfxkDfo+zVdKkLFWZFBL4 KYVYIPdjS4cFIsphXwMhf5wn1KzzzdlBVBb0FKjeDvhE7AQ+Pg2U7WCFV14NIE55/EarUwxJBAjBx YKe08b3Zb41cZvW/Bjvw9iQn/qZyjRGtiEv4uxLL8SuNfjfbtqCZ3k8QvY61wTFGTx+g3YpNCkWQk 0QvNZLcws5orMF1T00x4sDezXZyQLgU9F9UfqP/rC0jgvhEaDynwzv/AYteUZclwTdh9GP9nWzai9 9iHA/3lIWlRn9oieEN6g==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1nRygr-009E3L-CA; Wed, 09 Mar 2022 15:57:29 +0000 Received: from ams.source.kernel.org ([145.40.68.75]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1nRygn-009E1r-2a for linux-arm-kernel@lists.infradead.org; Wed, 09 Mar 2022 15:57:26 +0000 Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ams.source.kernel.org (Postfix) with ESMTPS id 15364B8221B; Wed, 9 Mar 2022 15:57:23 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id B8633C340F4; Wed, 9 Mar 2022 15:57:22 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1646841442; bh=kz6fUSOeSxV6zXzJAXekYGO9RAq0ZzUAzeFn/3Tv8Is=; h=From:To:Cc:Subject:Date:From; b=ZOyve3dz+GpUN712kWSe+Cep1WFafaP3ugNx7BOQvW7PJQbkiSKOjoBhWvZa+1IvY gtN49gqtyjmL2d0/U5RMJbi+fkkkr8z4rtkeBMmkc2HINH4KWExDdmVCenHmsWXoeY qAI07+P6FB4ur7TtD9RP6iKK+A2tq22Hh/bzI38pD3ZTBZuMkr8o7VhY1dENQVZk0T 1zZuA6/Hb4CLr0cTJpJc0hUqd8F1n3tOgPmok3lJAyNYh/b8OoenxQddkOwb+zcy69 DmpV22fmVd88BMA3koGCN/zDEUVPY2FxH/4wSEP0rUZeJDJIH5MadAkmQYI7O0vlwI XkPlYIOqgTG2A== Received: from sofa.misterjones.org ([185.219.108.64] helo=hot-poop.lan) by disco-boy.misterjones.org with esmtpsa (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.94.2) (envelope-from ) id 1nRygi-00DLw2-5n; Wed, 09 Mar 2022 15:57:20 +0000 From: Marc Zyngier To: linux-arm-kernel@lists.infradead.org Cc: kernel-team@android.com, James Morse , Nick Desaulniers , Will Deacon , Catalin Marinas Subject: [PATCH] arm64: Paper over ARM_SMCCC_ARCH_WORKAROUND_3 Clang issue Date: Wed, 9 Mar 2022 15:57:16 +0000 Message-Id: <20220309155716.3988480-1-maz@kernel.org> X-Mailer: git-send-email 2.34.1 MIME-Version: 1.0 X-SA-Exim-Connect-IP: 185.219.108.64 X-SA-Exim-Rcpt-To: linux-arm-kernel@lists.infradead.org, kernel-team@android.com, james.morse@arm.com, ndesaulniers@google.com, will@kernel.org, catalin.marinas@arm.com X-SA-Exim-Mail-From: maz@kernel.org X-SA-Exim-Scanned: No (on disco-boy.misterjones.org); SAEximRunCond expanded to false X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20220309_075725_315247_E3913317 X-CRM114-Status: GOOD ( 14.36 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , 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 Compiling the arm64 kernel with the BHB workarounds and Clang+LTO results in a bunch of: :4:2: error: invalid fixup for movz/movk instruction mov w0, #ARM_SMCCC_ARCH_WORKAROUND_3 when compiling arch/arm64/kernel/entry.S, and makes no sense at all. As it turns out, moving a single include line around makes the problem disappear. Why, you'd ask? Well, I don't have the faintest idea, and I'm running out of patience. So make of that what you want. Cc: James Morse Cc: Nick Desaulniers Cc: Will Deacon Cc: Catalin Marinas Signed-off-by: Marc Zyngier --- include/linux/arm-smccc.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/include/linux/arm-smccc.h b/include/linux/arm-smccc.h index 220c8c60e021..0a341dd9ff61 100644 --- a/include/linux/arm-smccc.h +++ b/include/linux/arm-smccc.h @@ -5,7 +5,6 @@ #ifndef __LINUX_ARM_SMCCC_H #define __LINUX_ARM_SMCCC_H -#include #include /* @@ -193,6 +192,7 @@ #ifndef __ASSEMBLY__ +#include #include #include -- 2.34.1 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel