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Drivers: hv: vmbus: Remove the target_vp field from the vmbus_channel struct

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The field is read only in __vmbus_open() and it is already stored twice
(after a call to hv_cpu_number_to_vp_number()) in target_cpu_store() and
init_vp_index(); there is no need to "cache" its value in the channel
data structure.

Suggested-by: Michael Kelley <mikelley@microsoft.com>
Signed-off-by: Andrea Parri (Microsoft) <parri.andrea@gmail.com>
Link: https://lore.kernel.org/r/20200617164642.37393-2-parri.andrea@gmail.com
Reviewed-by: Michael Kelley <mikelley@microsoft.com>
Signed-off-by: Wei Liu <wei.liu@kernel.org>
This commit is contained in:
Andrea Parri (Microsoft) 2020-06-17 18:46:35 +02:00 • committed by Wei Liu
parent b3a9e3b962
commit 5bf7468211
4 changed files with 9 additions and 14 deletions
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15
include/linux/hyperv.h
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@ -803,15 +803,14 @@ struct vmbus_channel {
u64 sig_event;
/*
* Starting with win8, this field will be used to specify
* the target virtual processor on which to deliver the interrupt for
* the host to guest communication.
* Prior to win8, incoming channel interrupts would only
* be delivered on cpu 0. Setting this value to 0 would
* preserve the earlier behavior.
* Starting with win8, this field will be used to specify the
* target CPU on which to deliver the interrupt for the host
* to guest communication.
*
* Prior to win8, incoming channel interrupts would only be
* delivered on CPU 0. Setting this value to 0 would preserve
* the earlier behavior.
*/
u32 target_vp;
/* The corresponding CPUID in the guest */
u32 target_cpu;
int numa_node;
/*