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Subject[PATCH 1/1] x86/hyper-V: Allocate the IDT entry early in boot
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From: "K. Y. Srinivasan" <kys@microsoft.com>

Allocate the hypervisor callback IDT entry early in the boot sequence.

Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
---
arch/x86/kernel/cpu/mshyperv.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/arch/x86/kernel/cpu/mshyperv.c b/arch/x86/kernel/cpu/mshyperv.c
index 3b3f713e15e5..236324e83a3a 100644
--- a/arch/x86/kernel/cpu/mshyperv.c
+++ b/arch/x86/kernel/cpu/mshyperv.c
@@ -59,8 +59,6 @@ void hyperv_vector_handler(struct pt_regs *regs)
void hv_setup_vmbus_irq(void (*handler)(void))
{
vmbus_handler = handler;
- /* Setup the IDT for hypervisor callback */
- alloc_intr_gate(HYPERVISOR_CALLBACK_VECTOR, hyperv_callback_vector);
}

void hv_remove_vmbus_irq(void)
@@ -251,6 +249,8 @@ static void __init ms_hyperv_init_platform(void)
*/
x86_platform.apic_post_init = hyperv_init;
hyperv_setup_mmu_ops();
+ /* Setup the IDT for hypervisor callback */
+ alloc_intr_gate(HYPERVISOR_CALLBACK_VECTOR, hyperv_callback_vector);
#endif
}

--
2.14.1
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