From b14d749ac5abdf311321172ae11e6ad1be4293e9 Mon Sep 17 00:00:00 2001 From: Himadri Pandya Date: Thu, 25 Jul 2019 05:03:14 +0000 Subject: 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 Reviewed-by: Michael Kelley Signed-off-by: Sasha Levin --- drivers/hv/hv_kvp.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'drivers/hv/hv_kvp.c') 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 #include #include +#include #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) { -- cgit v1.2.3