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 C5C95C4345F for ; Fri, 12 Apr 2024 08:42:58 +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:References:In-Reply-To: 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: List-Owner; bh=MqooY/PpEbNQOFHNQRxzMDMiamBF6UW3C8ah48lQnjg=; b=jkrhfM9RpbR2+d Lat2BiqlocGoYpk7wmGQA4+FSAqBOokKVU0AiEueYbUPLeOPaEhbb5CbT69UdgxswpVVacHzTbwSt srTSyFoBRL1r+jZytzNaGYbmvh5sLlRvl2yQ2JFS5KRz9XpuX2HejE4+cEe4/+oEziX7aHgm1K2cm loBmva1ZELXopTO/4f6ooPIWdwaNlgNQAO/2yZvY47m+voc+v6aLPAEP6Aec4T6G+dBRJ6tLTdOEi xiuBcAgIZIjecB5yuaav57TELbp9XZYJ2Em5a6vaYgSflmYmemCbINOTLubM+6ZKe6kKiQt839M3m NTjR5cnG3Et2vD56GEyA==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.97.1 #2 (Red Hat Linux)) id 1rvCUg-0000000G7NC-413G; Fri, 12 Apr 2024 08:42:46 +0000 Received: from foss.arm.com ([217.140.110.172]) by bombadil.infradead.org with esmtp (Exim 4.97.1 #2 (Red Hat Linux)) id 1rvCUU-0000000G7DO-0jYR for linux-arm-kernel@lists.infradead.org; Fri, 12 Apr 2024 08:42:36 +0000 Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id C211D339; Fri, 12 Apr 2024 01:43:02 -0700 (PDT) Received: from e112269-lin.cambridge.arm.com (e112269-lin.cambridge.arm.com [10.1.194.51]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id 6A70E3F6C4; Fri, 12 Apr 2024 01:42:31 -0700 (PDT) From: Steven Price To: kvm@vger.kernel.org, kvmarm@lists.linux.dev Cc: Suzuki K Poulose , Catalin Marinas , Marc Zyngier , Will Deacon , James Morse , Oliver Upton , Zenghui Yu , linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, Joey Gouly , Alexandru Elisei , Christoffer Dall , Fuad Tabba , linux-coco@lists.linux.dev, Ganapatrao Kulkarni , Steven Price Subject: [PATCH v2 05/14] fixmap: Allow architecture overriding set_fixmap_io Date: Fri, 12 Apr 2024 09:42:04 +0100 Message-Id: <20240412084213.1733764-6-steven.price@arm.com> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20240412084213.1733764-1-steven.price@arm.com> References: <20240412084056.1733704-1-steven.price@arm.com> <20240412084213.1733764-1-steven.price@arm.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20240412_014234_442558_8704A8F6 X-CRM114-Status: UNSURE ( 9.27 ) X-CRM114-Notice: Please train this message. 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 From: Suzuki K Poulose For a realm guest it will be necessary to ensure IO mappings are shared so that the VMM can emulate the device. The following patch will provide an implementation of set_fixmap_io for arm64 setting the shared bit (if in a realm). Signed-off-by: Suzuki K Poulose Signed-off-by: Steven Price --- include/asm-generic/fixmap.h | 2 ++ 1 file changed, 2 insertions(+) diff --git a/include/asm-generic/fixmap.h b/include/asm-generic/fixmap.h index 8cc7b09c1bc7..c5ce0368c1ee 100644 --- a/include/asm-generic/fixmap.h +++ b/include/asm-generic/fixmap.h @@ -94,8 +94,10 @@ static inline unsigned long virt_to_fix(const unsigned long vaddr) /* * Some fixmaps are for IO */ +#ifndef set_fixmap_io #define set_fixmap_io(idx, phys) \ __set_fixmap(idx, phys, FIXMAP_PAGE_IO) +#endif #define set_fixmap_offset_io(idx, phys) \ __set_fixmap_offset(idx, phys, FIXMAP_PAGE_IO) -- 2.34.1 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel