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![]() Baihua reported an error when boot an ARM64 guest with PAGE_SIZE=64k and BALLOON is enabled: hv_vmbus: registering driver hv_balloon hv_vmbus: probe failed for device 1eccfd72-4b41-45ef-b73a-4a6e44c12924 (-22) The cause of this is that the ringbuffer size for hv_balloon is not adjusted with VMBUS_RING_SIZE(), which makes the size not large enough for ringbuffers on guest with PAGE_SIZE=64k. Therefore use VMBUS_RING_SIZE() to calculate the ringbuffer size. Note that the old size (20 * 1024) counts a 4k header in the total size, while VMBUS_RING_SIZE() expects the parameter as the payload size, so use 16 * 1024. Cc: <stable@vger.kernel.org> # 5.15.x Reported-by: Baihua Lu <baihua.lu@microsoft.com> Signed-off-by: Boqun Feng <boqun.feng@gmail.com> Tested-by: Vitaly Kuznetsov <vkuznets@redhat.com> Link: https://lore.kernel.org/r/20211101150026.736124-1-boqun.feng@gmail.com Signed-off-by: Wei Liu <wei.liu@kernel.org> |
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.. | ||
channel.c | ||
channel_mgmt.c | ||
connection.c | ||
hv.c | ||
hv_balloon.c | ||
hv_common.c | ||
hv_debugfs.c | ||
hv_fcopy.c | ||
hv_kvp.c | ||
hv_snapshot.c | ||
hv_trace.c | ||
hv_trace.h | ||
hv_trace_balloon.h | ||
hv_util.c | ||
hv_utils_transport.c | ||
hv_utils_transport.h | ||
hyperv_vmbus.h | ||
Kconfig | ||
Makefile | ||
ring_buffer.c | ||
vmbus_drv.c |