From patchwork Thu Sep 10 14:34:50 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Boqun Feng X-Patchwork-Id: 11767957 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id DA00F618 for ; Thu, 10 Sep 2020 14:40:55 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id BCE252074B for ; Thu, 10 Sep 2020 14:40:55 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="PLMSr5mh" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1731196AbgIJOim (ORCPT ); Thu, 10 Sep 2020 10:38:42 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:56818 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1731019AbgIJOfX (ORCPT ); Thu, 10 Sep 2020 10:35:23 -0400 Received: from mail-ej1-x643.google.com (mail-ej1-x643.google.com [IPv6:2a00:1450:4864:20::643]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id A10ECC0617A3; Thu, 10 Sep 2020 07:35:19 -0700 (PDT) Received: by mail-ej1-x643.google.com with SMTP id nw23so9063267ejb.4; Thu, 10 Sep 2020 07:35:19 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=KCYaWwcvDjz/OmO+LXtbRJ6LszuyteB8m/JYCI1W1Mk=; b=PLMSr5mhrZi80kquG3UTKc10L5Ed+nu36WWw+z2lZB7jY2NtSZwMDvRpv3TuwllizR 7wpc1iofk2ZoyyDJwpWceFzTiHn90TWZgiZ045Rqz/ctDq5xo9epE09YznVy4EY1BmCs l2St/n4EQLGLl4Irlj/CjiNUTGWsQjI0pEg6F+baJPziJDFYBOwuCCOyMb+xCs9CEFvu 9KFGfkT69xlzT78AdIbRIVXoCrdn7bCNxNeWDPtg/woOLBOGoZLIKsWAlBjbsXvCsg9/ +ESlgsmFyeGx507Da/rJqBOVrFWssFaCbV59079oaLVMMMb6jhwsRiqhXjYp00Drq8eS JdWQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=KCYaWwcvDjz/OmO+LXtbRJ6LszuyteB8m/JYCI1W1Mk=; b=UFEPDaW6+yZMFx6m0VsNz3MGpAwL6M01lCF9AbqLIjFd63jnlOiw5djUQvdTIPokW3 VHmxa+Vyv/WzdOTxr2SEOnyD7j43evAls5fS/lI86MXSaDa0UJ4YQZtQIWxiRD6THmWN bAJLAf2VKkdvTOG53mLFImXh7ZuiLo3x+AllljfJ05YnflmrDrNHPaHgqRjD8b9mplFw qNA8sImuiwgO9O/xK4HaS71jXLVHsGygYDog/+ooCpxRm+5AKKYfhIISJKs5CzDrL72/ 7RdEVaio6ZEY4Oz+W2hQfcrkPv+OP8EXky2dFoJPf1j6s82Z5lRnX/+bbaLC4AHaJthY KAfA== X-Gm-Message-State: AOAM532OKeSERX9CGPVjdviG55sYo/xPyfeuQYo69cztuMbQJwywpaeQ iwII9gjap6tv8/JWgpadtTA= X-Google-Smtp-Source: ABdhPJzWHmRORR4s5GPtiMxYzRL7RIeJHACIEt31sw6plEpoQQDbSHFzrwWgxYbTiAiLDLiHODRGHA== X-Received: by 2002:a17:906:e4f:: with SMTP id q15mr9640896eji.155.1599748518392; Thu, 10 Sep 2020 07:35:18 -0700 (PDT) Received: from auth2-smtp.messagingengine.com (auth2-smtp.messagingengine.com. [66.111.4.228]) by smtp.gmail.com with ESMTPSA id ot19sm6825559ejb.121.2020.09.10.07.35.14 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Thu, 10 Sep 2020 07:35:17 -0700 (PDT) Received: from compute3.internal (compute3.nyi.internal [10.202.2.43]) by mailauth.nyi.internal (Postfix) with ESMTP id CE39C27C00A2; Thu, 10 Sep 2020 10:35:13 -0400 (EDT) Received: from mailfrontend1 ([10.202.2.162]) by compute3.internal (MEProxy); Thu, 10 Sep 2020 10:35:13 -0400 X-ME-Sender: X-ME-Proxy-Cause: gggruggvucftvghtrhhoucdtuddrgeduiedrudehjedgjedvucetufdoteggodetrfdotf fvucfrrhhofhhilhgvmecuhfgrshhtofgrihhlpdfqfgfvpdfurfetoffkrfgpnffqhgen uceurghilhhouhhtmecufedttdenucesvcftvggtihhpihgvnhhtshculddquddttddmne goufhorhhtvggutfgvtghiphdvucdlgedtmdenucfjughrpefhvffufffkofgjfhgggfes tdekredtredttdenucfhrhhomhepuehoqhhunhcuhfgvnhhguceosghoqhhunhdrfhgvnh hgsehgmhgrihhlrdgtohhmqeenucggtffrrghtthgvrhhnpeehvdevteefgfeiudettdef vedvvdelkeejueffffelgeeuhffhjeetkeeiueeuleenucfkphephedvrdduheehrdduud durdejudenucevlhhushhtvghrufhiiigvpeehnecurfgrrhgrmhepmhgrihhlfhhrohhm pegsohhquhhnodhmvghsmhhtphgruhhthhhpvghrshhonhgrlhhithihqdeiledvgeehtd eigedqudejjeekheehhedvqdgsohhquhhnrdhfvghngheppehgmhgrihhlrdgtohhmsehf ihigmhgvrdhnrghmvg X-ME-Proxy: Received: from localhost (unknown [52.155.111.71]) by mail.messagingengine.com (Postfix) with ESMTPA id 106293280059; Thu, 10 Sep 2020 10:35:13 -0400 (EDT) From: Boqun Feng To: linux-hyperv@vger.kernel.org, linux-input@vger.kernel.org, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, linux-scsi@vger.kernel.org, linux-arm-kernel@lists.infradead.org Cc: "K. Y. Srinivasan" , Haiyang Zhang , Stephen Hemminger , Wei Liu , Jiri Kosina , Benjamin Tissoires , Dmitry Torokhov , "David S. Miller" , Jakub Kicinski , "James E.J. Bottomley" , "Martin K. Petersen" , Michael Kelley , will@kernel.org, ardb@kernel.org, arnd@arndb.de, catalin.marinas@arm.com, mark.rutland@arm.com, maz@kernel.org, Boqun Feng Subject: [PATCH v3 06/11] hv: hyperv.h: Introduce some hvpfn helper functions Date: Thu, 10 Sep 2020 22:34:50 +0800 Message-Id: <20200910143455.109293-7-boqun.feng@gmail.com> X-Mailer: git-send-email 2.28.0 In-Reply-To: <20200910143455.109293-1-boqun.feng@gmail.com> References: <20200910143455.109293-1-boqun.feng@gmail.com> MIME-Version: 1.0 Sender: linux-scsi-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-scsi@vger.kernel.org When a guest communicate with the hypervisor, it must use HV_HYP_PAGE to calculate PFN, so introduce a few hvpfn helper functions as the counterpart of the page helper functions. This is the preparation for supporting guest whose PAGE_SIZE is not 4k. Signed-off-by: Boqun Feng Reviewed-by: Michael Kelley --- include/linux/hyperv.h | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/include/linux/hyperv.h b/include/linux/hyperv.h index 6f4831212979..00c09d2ff9ad 100644 --- a/include/linux/hyperv.h +++ b/include/linux/hyperv.h @@ -1687,4 +1687,9 @@ static inline unsigned long virt_to_hvpfn(void *addr) return paddr >> HV_HYP_PAGE_SHIFT; } +#define NR_HV_HYP_PAGES_IN_PAGE (PAGE_SIZE / HV_HYP_PAGE_SIZE) +#define offset_in_hvpage(ptr) ((unsigned long)(ptr) & ~HV_HYP_PAGE_MASK) +#define HVPFN_UP(x) (((x) + HV_HYP_PAGE_SIZE-1) >> HV_HYP_PAGE_SHIFT) +#define page_to_hvpfn(page) (page_to_pfn(page) * NR_HV_HYP_PAGES_IN_PAGE) + #endif /* _HYPERV_H */