| Message ID | 20200902030107.33380-7-boqun.feng@gmail.com |
|---|---|
| State | New |
| Headers | show
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[66.111.4.228]) by smtp.gmail.com with ESMTPSA id i14sm4450941qkn.53.2020.09.01.20.01.29 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Tue, 01 Sep 2020 20:01:30 -0700 (PDT) Received: from compute3.internal (compute3.nyi.internal [10.202.2.43]) by mailauth.nyi.internal (Postfix) with ESMTP id 861D527C005A; Tue, 1 Sep 2020 23:01:29 -0400 (EDT) Received: from mailfrontend1 ([10.202.2.162]) by compute3.internal (MEProxy); Tue, 01 Sep 2020 23:01:29 -0400 X-ME-Sender: <xms:CQtPX85rgvIkKxbvRsPctQZ6d5QC7d3xHMnPuBmG7SSlMqd7Ahr0wA> <xme:CQtPX94WQbzvvU8lMuVZxIdAcBy-klwjzwXzrRCUTd3i2VK-N-NmiuDMER5wwbmlK 1oNPKP-i72SUXfebw> X-ME-Proxy-Cause: gggruggvucftvghtrhhoucdtuddrgeduiedrudefkedgieeiucetufdoteggodetrfdotf fvucfrrhhofhhilhgvmecuhfgrshhtofgrihhlpdfqfgfvpdfurfetoffkrfgpnffqhgen uceurghilhhouhhtmecufedttdenucesvcftvggtihhpihgvnhhtshculddquddttddmne goufhorhhtvggutfgvtghiphdvucdlgedtmdenucfjughrpefhvffufffkofgjfhgggfes tdekredtredttdenucfhrhhomhepuehoqhhunhcuhfgvnhhguceosghoqhhunhdrfhgvnh hgsehgmhgrihhlrdgtohhmqeenucggtffrrghtthgvrhhnpeehvdevteefgfeiudettdef vedvvdelkeejueffffelgeeuhffhjeetkeeiueeuleenucfkphephedvrdduheehrdduud durdejudenucevlhhushhtvghrufhiiigvpeefnecurfgrrhgrmhepmhgrihhlfhhrohhm pegsohhquhhnodhmvghsmhhtphgruhhthhhpvghrshhonhgrlhhithihqdeiledvgeehtd eigedqudejjeekheehhedvqdgsohhquhhnrdhfvghngheppehgmhgrihhlrdgtohhmsehf ihigmhgvrdhnrghmvg X-ME-Proxy: <xmx:CQtPX7eISjL73HC2QXxvV8SOuk5ROiwWtU3dqgPySREYf_8SSbegWA> <xmx:CQtPXxIMKGAI40-XxBMVciO1Xcw3qmalFUi-VN8ECsaI-lLCDNmHXw> <xmx:CQtPXwIUweSQVIhm1PJdd9KwUpytPNfk6hQNiMN2ZZxbCbjfcQHA-g> <xmx:CQtPX95ZZFPXyfCgIA31FId6PzAd0CzDV2LKOVOkOVYBEcFNx-TFNae2VZk> Received: from localhost (unknown [52.155.111.71]) by mail.messagingengine.com (Postfix) with ESMTPA id E92653280059; Tue, 1 Sep 2020 23:01:28 -0400 (EDT) From: Boqun Feng <boqun.feng@gmail.com> 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" <kys@microsoft.com>, Haiyang Zhang <haiyangz@microsoft.com>, Stephen Hemminger <sthemmin@microsoft.com>, Wei Liu <wei.liu@kernel.org>, Jiri Kosina <jikos@kernel.org>, Benjamin Tissoires <benjamin.tissoires@redhat.com>, Dmitry Torokhov <dmitry.torokhov@gmail.com>, "David S. Miller" <davem@davemloft.net>, Jakub Kicinski <kuba@kernel.org>, "James E.J. Bottomley" <jejb@linux.ibm.com>, "Martin K. Petersen" <martin.petersen@oracle.com>, Michael Kelley <mikelley@microsoft.com>, Boqun Feng <boqun.feng@gmail.com> Subject: [RFC v2 06/11] hv: hyperv.h: Introduce some hvpfn helper functions Date: Wed, 2 Sep 2020 11:01:02 +0800 Message-Id: <20200902030107.33380-7-boqun.feng@gmail.com> X-Mailer: git-send-email 2.28.0 In-Reply-To: <20200902030107.33380-1-boqun.feng@gmail.com> References: <20200902030107.33380-1-boqun.feng@gmail.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Sender: linux-scsi-owner@vger.kernel.org Precedence: bulk List-ID: <linux-scsi.vger.kernel.org> X-Mailing-List: linux-scsi@vger.kernel.org |
| Series |
Hyper-V: Support PAGE_SIZE larger than 4K
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expand
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diff --git a/include/linux/hyperv.h b/include/linux/hyperv.h index 6f4831212979..54e84ba6b554 100644 --- a/include/linux/hyperv.h +++ b/include/linux/hyperv.h @@ -1687,4 +1687,8 @@ 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 */
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 <boqun.feng@gmail.com> --- include/linux/hyperv.h | 4 ++++ 1 file changed, 4 insertions(+)