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[66.111.4.227]) by smtp.gmail.com with ESMTPSA id a193sm1092131qkc.102.2020.07.20.18.42.07 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Mon, 20 Jul 2020 18:42:07 -0700 (PDT) Received: from compute3.internal (compute3.nyi.internal [10.202.2.43]) by mailauth.nyi.internal (Postfix) with ESMTP id EAC4F27C0054; Mon, 20 Jul 2020 21:42:06 -0400 (EDT) Received: from mailfrontend1 ([10.202.2.162]) by compute3.internal (MEProxy); Mon, 20 Jul 2020 21:42:06 -0400 X-ME-Sender: X-ME-Proxy-Cause: gggruggvucftvghtrhhoucdtuddrgeduiedrgeehgdegjecutefuodetggdotefrodftvf curfhrohhfihhlvgemucfhrghsthforghilhdpqfgfvfdpuffrtefokffrpgfnqfghnecu uegrihhlohhuthemuceftddtnecusecvtfgvtghiphhivghnthhsucdlqddutddtmdenog fuohhrthgvugftvggtihhpvdculdegtddmnecujfgurhephffvufffkffojghfggfgsedt keertdertddtnecuhfhrohhmpeeuohhquhhnucfhvghnghcuoegsohhquhhnrdhfvghngh esghhmrghilhdrtghomheqnecuggftrfgrthhtvghrnhephedvveetfefgiedutedtfeev vddvleekjeeuffffleeguefhhfejteekieeuueelnecukfhppeehvddrudehhedrudduud drjedunecuvehluhhsthgvrhfuihiivgepjeenucfrrghrrghmpehmrghilhhfrhhomhep sghoqhhunhdomhgvshhmthhprghuthhhphgvrhhsohhnrghlihhthidqieelvdeghedtie egqddujeejkeehheehvddqsghoqhhunhdrfhgvnhhgpeepghhmrghilhdrtghomhesfhhi gihmvgdrnhgrmhgv X-ME-Proxy: Received: from localhost (unknown [52.155.111.71]) by mail.messagingengine.com (Postfix) with ESMTPA id 64F8E3280070; Mon, 20 Jul 2020 21:42:06 -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 09/11] HID: hyperv: Make ringbuffer at least take two pages Date: Tue, 21 Jul 2020 09:41:33 +0800 Message-Id: <20200721014135.84140-10-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-scsi-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-scsi@vger.kernel.org When PAGE_SIZE > HV_HYP_PAGE_SIZE, we need the ringbuffer size to be at least 2 * PAGE_SIZE: one page for the header and at least one page of the data part (because of the alignment requirement for double mapping). So make sure the ringbuffer sizes to be at least 2 * PAGE_SIZE when using vmbus_open() to establish the vmbus connection. Signed-off-by: Boqun Feng --- drivers/hid/hid-hyperv.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/hid/hid-hyperv.c b/drivers/hid/hid-hyperv.c index 0b6ee1dee625..36c5e157c691 100644 --- a/drivers/hid/hid-hyperv.c +++ b/drivers/hid/hid-hyperv.c @@ -104,8 +104,8 @@ struct synthhid_input_report { #pragma pack(pop) -#define INPUTVSC_SEND_RING_BUFFER_SIZE (40 * 1024) -#define INPUTVSC_RECV_RING_BUFFER_SIZE (40 * 1024) +#define INPUTVSC_SEND_RING_BUFFER_SIZE (128 * 1024) +#define INPUTVSC_RECV_RING_BUFFER_SIZE (128 * 1024) enum pipe_prot_msg_type { -- 2.27.0