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authorHimadri Pandya <himadrispandya@gmail.com>2019-07-25 05:03:14 +0000
committerSasha Levin <sashal@kernel.org>2019-11-21 20:10:45 -0500
commitb14d749ac5abdf311321172ae11e6ad1be4293e9 (patch)
treeee67f86779dd3214e128fa340adfd0c917cb9d51 /drivers/hv/hv_kvp.c
parentc48d8b04893afe35fd6f5ccbf339493bba277d43 (diff)
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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_kvp.c')
-rw-r--r--drivers/hv/hv_kvp.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/hv/hv_kvp.c b/drivers/hv/hv_kvp.c
index 5054d1105236..ae7c028dc5a8 100644
--- a/drivers/hv/hv_kvp.c
+++ b/drivers/hv/hv_kvp.c
@@ -27,6 +27,7 @@
#include <linux/connector.h>
#include <linux/workqueue.h>
#include <linux/hyperv.h>
+#include <asm/hyperv-tlfs.h>
#include "hyperv_vmbus.h"
#include "hv_utils_transport.h"
@@ -661,7 +662,7 @@ void hv_kvp_onchannelcallback(void *context)
if (kvp_transaction.state > HVUTIL_READY)
return;
- vmbus_recvpacket(channel, recv_buffer, PAGE_SIZE * 4, &recvlen,
+ vmbus_recvpacket(channel, recv_buffer, HV_HYP_PAGE_SIZE * 4, &recvlen,
&requestid);
if (recvlen > 0) {