aboutsummaryrefslogtreecommitdiff
path: root/drivers
diff options
context:
space:
mode:
authorK. Y. Srinivasan <kys@microsoft.com>2017-03-14 18:01:39 -0700
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2017-03-17 15:10:49 +0900
commit6c248aad81c8903981db9f12fd74189fa01b3789 (patch)
treebe0719944f1822567d507d12f12c76aa4e1e4301 /drivers
parent4539673a6ac027e3ba95901379b5f36c5eb3c9dc (diff)
downloadlinux-6c248aad81c8903981db9f12fd74189fa01b3789.tar.gz
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: K. Y. Srinivasan <kys@microsoft.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/hv/hv.c5
1 files changed, 4 insertions, 1 deletions
diff --git a/drivers/hv/hv.c b/drivers/hv/hv.c
index 665a64f1611e..12e7baecb84e 100644
--- a/drivers/hv/hv.c
+++ b/drivers/hv/hv.c
@@ -254,7 +254,10 @@ int hv_synic_init(unsigned int cpu)
shared_sint.as_uint64 = 0;
shared_sint.vector = HYPERVISOR_CALLBACK_VECTOR;
shared_sint.masked = false;
- shared_sint.auto_eoi = true;
+ 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,
shared_sint.as_uint64);