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Date: Sun, 13 Sep 2020 09:59:56 -0700 From: Dmitry Torokhov <dmitry.torokhov@...il.com> To: Michael Kelley <mikelley@...rosoft.com> Cc: Boqun Feng <boqun.feng@...il.com>, "linux-hyperv@...r.kernel.org" <linux-hyperv@...r.kernel.org>, "linux-input@...r.kernel.org" <linux-input@...r.kernel.org>, "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>, "netdev@...r.kernel.org" <netdev@...r.kernel.org>, "linux-scsi@...r.kernel.org" <linux-scsi@...r.kernel.org>, "linux-arm-kernel@...ts.infradead.org" <linux-arm-kernel@...ts.infradead.org>, KY Srinivasan <kys@...rosoft.com>, Haiyang Zhang <haiyangz@...rosoft.com>, Stephen Hemminger <sthemmin@...rosoft.com>, Wei Liu <wei.liu@...nel.org>, Jiri Kosina <jikos@...nel.org>, Benjamin Tissoires <benjamin.tissoires@...hat.com>, "David S. Miller" <davem@...emloft.net>, Jakub Kicinski <kuba@...nel.org>, "James E.J. Bottomley" <jejb@...ux.ibm.com>, "Martin K. Petersen" <martin.petersen@...cle.com>, "will@...nel.org" <will@...nel.org>, "ardb@...nel.org" <ardb@...nel.org>, "arnd@...db.de" <arnd@...db.de>, "catalin.marinas@....com" <catalin.marinas@....com>, "Mark.Rutland@....com" <Mark.Rutland@....com>, "maz@...nel.org" <maz@...nel.org> Subject: Re: [PATCH v3 08/11] Input: hyperv-keyboard: Make ringbuffer at least take two pages On Sat, Sep 12, 2020 at 07:37:23PM +0000, Michael Kelley wrote: > From: Boqun Feng <boqun.feng@...il.com> Sent: Thursday, September 10, 2020 7:35 AM > > > > > 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 <boqun.feng@...il.com> > > --- > > drivers/input/serio/hyperv-keyboard.c | 4 ++-- > > 1 file changed, 2 insertions(+), 2 deletions(-) > > > > Reviewed-by: Michael Kelley <mikelley@...rosoft.com> Acked-by: Dmitry Torokhov <dmitry.torokhov@...il.com> Please feel free to merge with the rest of the patches through whatever tree they will go in. Thanks. -- Dmitry
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