Commit 6c248aad authored by K. Y. Srinivasan's avatar K. Y. Srinivasan Committed by Greg Kroah-Hartman

Drivers: hv: Base autoeoi enablement based on hypervisor hints

Don't enable auto-eoi if the hypervisor recommends otherwise. This will
enable vAPIC functionality if available.
Signed-off-by: default avatarK. Y. Srinivasan <kys@microsoft.com>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 4539673a
......@@ -147,6 +147,11 @@
*/
#define HV_X64_RELAXED_TIMING_RECOMMENDED (1 << 5)
/*
* Virtual APIC support
*/
#define HV_X64_DEPRECATING_AEOI_RECOMMENDED (1 << 9)
/*
* Crash notification flag.
*/
......
......@@ -254,6 +254,9 @@ int hv_synic_init(unsigned int cpu)
shared_sint.as_uint64 = 0;
shared_sint.vector = HYPERVISOR_CALLBACK_VECTOR;
shared_sint.masked = false;
if (ms_hyperv.hints & HV_X64_DEPRECATING_AEOI_RECOMMENDED)
shared_sint.auto_eoi = false;
else
shared_sint.auto_eoi = true;
hv_set_synint_state(HV_X64_MSR_SINT0 + VMBUS_MESSAGE_SINT,
......
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