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authorVitaly Kuznetsov <vkuznets@redhat.com>2017-08-02 18:09:16 +0200
committerIngo Molnar <mingo@kernel.org>2017-08-10 16:50:22 +0200
commit057841713cfff62b4485cdd2b245f05b7ea3ba16 (patch)
tree6bb15aa4313f06581a28ee2f0e45fc58fb666a57 /drivers/hv/connection.c
parent6a8edbd0c54ae266b12f4f63e406313481c9d4bc (diff)
hyper-v: Use fast hypercall for HVCALL_SIGNAL_EVENT
We need to pass only 8 bytes of input for HvSignalEvent which makes it a perfect fit for fast hypercall. hv_input_signal_event_buffer is not needed any more and hv_input_signal_event is converted to union for convenience. Signed-off-by: Vitaly Kuznetsov <vkuznets@redhat.com> Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com> Reviewed-by: Stephen Hemminger <sthemmin@microsoft.com> Cc: Andy Lutomirski <luto@kernel.org> Cc: Haiyang Zhang <haiyangz@microsoft.com> Cc: Jork Loeser <Jork.Loeser@microsoft.com> Cc: K. Y. Srinivasan <kys@microsoft.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Simon Xiao <sixiao@microsoft.com> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: devel@linuxdriverproject.org Link: http://lkml.kernel.org/r/20170802160921.21791-5-vkuznets@redhat.com Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'drivers/hv/connection.c')
-rw-r--r--drivers/hv/connection.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/hv/connection.c b/drivers/hv/connection.c
index 45e806e3112f..37ecf514189e 100644
--- a/drivers/hv/connection.c
+++ b/drivers/hv/connection.c
@@ -408,6 +408,6 @@ void vmbus_set_event(struct vmbus_channel *channel)
if (!channel->is_dedicated_interrupt)
vmbus_send_interrupt(child_relid);
- hv_do_hypercall(HVCALL_SIGNAL_EVENT, channel->sig_event, NULL);
+ hv_do_fast_hypercall8(HVCALL_SIGNAL_EVENT, channel->sig_event);
}
EXPORT_SYMBOL_GPL(vmbus_set_event);