diff options
| author | Himadri Pandya <himadrispandya@gmail.com> | 2019-07-25 05:03:14 +0000 |
|---|---|---|
| committer | Sasha Levin <sashal@kernel.org> | 2019-11-21 20:10:45 -0500 |
| commit | b14d749ac5abdf311321172ae11e6ad1be4293e9 (patch) | |
| tree | ee67f86779dd3214e128fa340adfd0c917cb9d51 /drivers/hv/hv_util.c | |
| parent | c48d8b04893afe35fd6f5ccbf339493bba277d43 (diff) | |
Drivers: hv: Specify receive buffer size using Hyper-V page size
The recv_buffer is used to retrieve data from the VMbus ring buffer.
VMbus ring buffers are sized based on the guest page size which
Hyper-V assumes to be 4KB. But it may be different on some
architectures. So use the Hyper-V page size to allocate the
recv_buffer and set the maximum size to receive.
Signed-off-by: Himadri Pandya <himadri18.07@gmail.com>
Reviewed-by: Michael Kelley <mikelley@microsoft.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'drivers/hv/hv_util.c')
| -rw-r--r-- | drivers/hv/hv_util.c | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/drivers/hv/hv_util.c b/drivers/hv/hv_util.c index e32681ee7b9f..c2c08f26bd5f 100644 --- a/drivers/hv/hv_util.c +++ b/drivers/hv/hv_util.c @@ -136,7 +136,7 @@ static void shutdown_onchannelcallback(void *context) struct icmsg_hdr *icmsghdrp; vmbus_recvpacket(channel, shut_txf_buf, - PAGE_SIZE, &recvlen, &requestid); + HV_HYP_PAGE_SIZE, &recvlen, &requestid); if (recvlen > 0) { icmsghdrp = (struct icmsg_hdr *)&shut_txf_buf[ @@ -284,7 +284,7 @@ static void timesync_onchannelcallback(void *context) u8 *time_txf_buf = util_timesynch.recv_buffer; vmbus_recvpacket(channel, time_txf_buf, - PAGE_SIZE, &recvlen, &requestid); + HV_HYP_PAGE_SIZE, &recvlen, &requestid); if (recvlen > 0) { icmsghdrp = (struct icmsg_hdr *)&time_txf_buf[ @@ -346,7 +346,7 @@ static void heartbeat_onchannelcallback(void *context) while (1) { vmbus_recvpacket(channel, hbeat_txf_buf, - PAGE_SIZE, &recvlen, &requestid); + HV_HYP_PAGE_SIZE, &recvlen, &requestid); if (!recvlen) break; @@ -390,7 +390,7 @@ static int util_probe(struct hv_device *dev, (struct hv_util_service *)dev_id->driver_data; int ret; - srv->recv_buffer = kmalloc(PAGE_SIZE * 4, GFP_KERNEL); + srv->recv_buffer = kmalloc(HV_HYP_PAGE_SIZE * 4, GFP_KERNEL); if (!srv->recv_buffer) return -ENOMEM; srv->channel = dev->channel; |