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[66.111.4.227]) by smtp.gmail.com with ESMTPSA id d8sm1270243qkl.118.2020.07.20.18.42.01 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Mon, 20 Jul 2020 18:42:02 -0700 (PDT) Received: from compute3.internal (compute3.nyi.internal [10.202.2.43]) by mailauth.nyi.internal (Postfix) with ESMTP id 6D62627C0054; Mon, 20 Jul 2020 21:42:01 -0400 (EDT) Received: from mailfrontend1 ([10.202.2.162]) by compute3.internal (MEProxy); Mon, 20 Jul 2020 21:42:01 -0400 X-ME-Sender: X-ME-Proxy-Cause: gggruggvucftvghtrhhoucdtuddrgeduiedrgeehgdegjecutefuodetggdotefrodftvf curfhrohhfihhlvgemucfhrghsthforghilhdpqfgfvfdpuffrtefokffrpgfnqfghnecu uegrihhlohhuthemuceftddtnecusecvtfgvtghiphhivghnthhsucdlqddutddtmdenog fuohhrthgvugftvggtihhpvdculdegtddmnecujfgurhephffvufffkffojghfggfgsedt keertdertddtnecuhfhrohhmpeeuohhquhhnucfhvghnghcuoegsohhquhhnrdhfvghngh esghhmrghilhdrtghomheqnecuggftrfgrthhtvghrnhephedvveetfefgiedutedtfeev vddvleekjeeuffffleeguefhhfejteekieeuueelnecukfhppeehvddrudehhedrudduud drjedunecuvehluhhsthgvrhfuihiivgepgeenucfrrghrrghmpehmrghilhhfrhhomhep sghoqhhunhdomhgvshhmthhprghuthhhphgvrhhsohhnrghlihhthidqieelvdeghedtie egqddujeejkeehheehvddqsghoqhhunhdrfhgvnhhgpeepghhmrghilhdrtghomhesfhhi gihmvgdrnhgrmhgv X-ME-Proxy: Received: from localhost (unknown [52.155.111.71]) by mail.messagingengine.com (Postfix) with ESMTPA id DF1C93280059; Mon, 20 Jul 2020 21:42:00 -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 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 , Boqun Feng Subject: [RFC 06/11] hv: hyperv.h: Introduce some hvpfn helper functions Date: Tue, 21 Jul 2020 09:41:30 +0800 Message-Id: <20200721014135.84140-7-boqun.feng@gmail.com> X-Mailer: git-send-email 2.27.0 In-Reply-To: <20200721014135.84140-1-boqun.feng@gmail.com> References: <20200721014135.84140-1-boqun.feng@gmail.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@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 --- include/linux/hyperv.h | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/include/linux/hyperv.h b/include/linux/hyperv.h index eda8e5f9a49d..b34d94b1f659 100644 --- a/include/linux/hyperv.h +++ b/include/linux/hyperv.h @@ -1703,4 +1703,8 @@ static inline unsigned long virt_to_hvpfn(void *addr) return paddr >> HV_HYP_PAGE_SHIFT; } +#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) << PAGE_SHIFT) >> HV_HYP_PAGE_SHIFT) + #endif /* _HYPERV_H */ -- 2.27.0