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, linux-arm-kernel@lists.infradead.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>, will@kernel.org, ardb@kernel.org, arnd@arndb.de, catalin.marinas@arm.com, mark.rutland@arm.com, maz@kernel.org, Boqun Feng <boqun.feng@gmail.com> Subject: [PATCH v3 08/11] Input: hyperv-keyboard: Make ringbuffer at least take two pages Date: Thu, 10 Sep 2020 22:34:52 +0800 [thread overview] Message-ID: <20200910143455.109293-9-boqun.feng@gmail.com> (raw) In-Reply-To: <20200910143455.109293-1-boqun.feng@gmail.com> 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@gmail.com> --- drivers/input/serio/hyperv-keyboard.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/input/serio/hyperv-keyboard.c b/drivers/input/serio/hyperv-keyboard.c index df4e9f6f4529..6ebc61e2db3f 100644 --- a/drivers/input/serio/hyperv-keyboard.c +++ b/drivers/input/serio/hyperv-keyboard.c @@ -75,8 +75,8 @@ struct synth_kbd_keystroke { #define HK_MAXIMUM_MESSAGE_SIZE 256 -#define KBD_VSC_SEND_RING_BUFFER_SIZE (40 * 1024) -#define KBD_VSC_RECV_RING_BUFFER_SIZE (40 * 1024) +#define KBD_VSC_SEND_RING_BUFFER_SIZE max(40 * 1024, (int)(2 * PAGE_SIZE)) +#define KBD_VSC_RECV_RING_BUFFER_SIZE max(40 * 1024, (int)(2 * PAGE_SIZE)) #define XTKBD_EMUL0 0xe0 #define XTKBD_EMUL1 0xe1 -- 2.28.0
WARNING: multiple messages have this Message-ID (diff)
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, linux-arm-kernel@lists.infradead.org Cc: mark.rutland@arm.com, maz@kernel.org, Wei Liu <wei.liu@kernel.org>, Dmitry Torokhov <dmitry.torokhov@gmail.com>, Stephen Hemminger <sthemmin@microsoft.com>, arnd@arndb.de, "Martin K. Petersen" <martin.petersen@oracle.com>, ardb@kernel.org, will@kernel.org, Haiyang Zhang <haiyangz@microsoft.com>, Jiri Kosina <jikos@kernel.org>, Boqun Feng <boqun.feng@gmail.com>, Michael Kelley <mikelley@microsoft.com>, Benjamin Tissoires <benjamin.tissoires@redhat.com>, catalin.marinas@arm.com, Jakub Kicinski <kuba@kernel.org>, "K. Y. Srinivasan" <kys@microsoft.com>, "James E.J. Bottomley" <jejb@linux.ibm.com>, "David S. Miller" <davem@davemloft.net> Subject: [PATCH v3 08/11] Input: hyperv-keyboard: Make ringbuffer at least take two pages Date: Thu, 10 Sep 2020 22:34:52 +0800 [thread overview] Message-ID: <20200910143455.109293-9-boqun.feng@gmail.com> (raw) In-Reply-To: <20200910143455.109293-1-boqun.feng@gmail.com> 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@gmail.com> --- drivers/input/serio/hyperv-keyboard.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/input/serio/hyperv-keyboard.c b/drivers/input/serio/hyperv-keyboard.c index df4e9f6f4529..6ebc61e2db3f 100644 --- a/drivers/input/serio/hyperv-keyboard.c +++ b/drivers/input/serio/hyperv-keyboard.c @@ -75,8 +75,8 @@ struct synth_kbd_keystroke { #define HK_MAXIMUM_MESSAGE_SIZE 256 -#define KBD_VSC_SEND_RING_BUFFER_SIZE (40 * 1024) -#define KBD_VSC_RECV_RING_BUFFER_SIZE (40 * 1024) +#define KBD_VSC_SEND_RING_BUFFER_SIZE max(40 * 1024, (int)(2 * PAGE_SIZE)) +#define KBD_VSC_RECV_RING_BUFFER_SIZE max(40 * 1024, (int)(2 * PAGE_SIZE)) #define XTKBD_EMUL0 0xe0 #define XTKBD_EMUL1 0xe1 -- 2.28.0 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
next prev parent reply other threads:[~2020-09-10 21:06 UTC|newest] Thread overview: 54+ messages / expand[flat|nested] mbox.gz Atom feed top 2020-09-10 14:34 [PATCH v3 00/11] Hyper-V: Support PAGE_SIZE larger than 4K Boqun Feng 2020-09-10 14:34 ` Boqun Feng 2020-09-10 14:34 ` [PATCH v3 01/11] Drivers: hv: vmbus: Always use HV_HYP_PAGE_SIZE for gpadl Boqun Feng 2020-09-10 14:34 ` Boqun Feng 2020-09-12 19:23 ` Michael Kelley 2020-09-12 19:23 ` Michael Kelley 2020-09-10 14:34 ` [PATCH v3 02/11] Drivers: hv: vmbus: Move __vmbus_open() Boqun Feng 2020-09-10 14:34 ` Boqun Feng 2020-09-12 19:24 ` Michael Kelley 2020-09-12 19:24 ` Michael Kelley 2020-09-10 14:34 ` [PATCH v3 03/11] Drivers: hv: vmbus: Introduce types of GPADL Boqun Feng 2020-09-10 14:34 ` Boqun Feng 2020-09-12 19:29 ` Michael Kelley 2020-09-12 19:29 ` Michael Kelley 2020-09-10 14:34 ` [PATCH v3 04/11] Drivers: hv: Use HV_HYP_PAGE in hv_synic_enable_regs() Boqun Feng 2020-09-10 14:34 ` Boqun Feng 2020-09-12 19:30 ` Michael Kelley 2020-09-12 19:30 ` Michael Kelley 2020-09-10 14:34 ` [PATCH v3 05/11] Drivers: hv: vmbus: Move virt_to_hvpfn() to hyperv header Boqun Feng 2020-09-10 14:34 ` Boqun Feng 2020-09-12 19:32 ` Michael Kelley 2020-09-12 19:32 ` Michael Kelley 2020-09-10 14:34 ` [PATCH v3 06/11] hv: hyperv.h: Introduce some hvpfn helper functions Boqun Feng 2020-09-10 14:34 ` Boqun Feng 2020-09-12 19:33 ` Michael Kelley 2020-09-12 19:33 ` Michael Kelley 2020-09-10 14:34 ` [PATCH v3 07/11] hv_netvsc: Use HV_HYP_PAGE_SIZE for Hyper-V communication Boqun Feng 2020-09-10 14:34 ` Boqun Feng 2020-09-12 19:36 ` Michael Kelley 2020-09-12 19:36 ` Michael Kelley 2020-09-10 14:34 ` Boqun Feng [this message] 2020-09-10 14:34 ` [PATCH v3 08/11] Input: hyperv-keyboard: Make ringbuffer at least take two pages Boqun Feng 2020-09-12 19:37 ` Michael Kelley 2020-09-12 19:37 ` Michael Kelley 2020-09-13 16:59 ` Dmitry Torokhov 2020-09-13 16:59 ` Dmitry Torokhov 2020-09-14 8:46 ` Boqun Feng 2020-09-14 8:46 ` Boqun Feng 2020-09-14 9:30 ` Wei Liu 2020-09-14 9:30 ` Wei Liu 2020-09-14 10:22 ` Boqun Feng 2020-09-14 10:22 ` Boqun Feng 2020-09-10 14:34 ` [PATCH v3 09/11] HID: hyperv: " Boqun Feng 2020-09-10 14:34 ` Boqun Feng 2020-09-12 19:38 ` Michael Kelley 2020-09-12 19:38 ` Michael Kelley 2020-09-10 14:34 ` [PATCH v3 10/11] Driver: hv: util: " Boqun Feng 2020-09-10 14:34 ` Boqun Feng 2020-09-12 19:40 ` Michael Kelley 2020-09-12 19:40 ` Michael Kelley 2020-09-10 14:34 ` [PATCH v3 11/11] scsi: storvsc: Support PAGE_SIZE larger than 4K Boqun Feng 2020-09-10 14:34 ` Boqun Feng 2020-09-12 19:55 ` Michael Kelley 2020-09-12 19:55 ` Michael Kelley
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