Patch "KVM: nVMX: vmx_complete_nested_posted_interrupt() can't fail" has been added to the 4.9-stable tree

Patch "KVM: nVMX: vmx_complete_nested_posted_interrupt() can't fail" has been added to the 4.9-stable tree

[gregkh]

This is a note to let you know that I've just added the patch titled

    KVM: nVMX: vmx_complete_nested_posted_interrupt() can't fail

to the 4.9-stable tree which can be found at:
    http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
     kvm-nvmx-vmx_complete_nested_posted_interrupt-can-t-fail.patch
and it can be found in the queue-4.9 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@vger.kernel.org> know about it.


>From 6342c50ad12e8ce0736e722184a7dbdea4a3477f Mon Sep 17 00:00:00 2001
From: David Hildenbrand <david@redhat.com>
Date: Wed, 25 Jan 2017 11:58:58 +0100
Subject: KVM: nVMX: vmx_complete_nested_posted_interrupt() can't fail

From: David Hildenbrand <david@redhat.com>

commit 6342c50ad12e8ce0736e722184a7dbdea4a3477f upstream.

vmx_complete_nested_posted_interrupt() can't fail, let's turn it into
a void function.

Signed-off-by: David Hildenbrand <david@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: David Woodhouse <dwmw@amazon.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 arch/x86/kvm/vmx.c |   10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

--- a/arch/x86/kvm/vmx.c
+++ b/arch/x86/kvm/vmx.c
@@ -4738,7 +4738,7 @@ static bool vmx_get_enable_apicv(void)
 	return enable_apicv;
 }
 
-static int vmx_complete_nested_posted_interrupt(struct kvm_vcpu *vcpu)
+static void vmx_complete_nested_posted_interrupt(struct kvm_vcpu *vcpu)
 {
 	struct vcpu_vmx *vmx = to_vmx(vcpu);
 	int max_irr;
@@ -4749,13 +4749,13 @@ static int vmx_complete_nested_posted_in
 	    vmx->nested.pi_pending) {
 		vmx->nested.pi_pending = false;
 		if (!pi_test_and_clear_on(vmx->nested.pi_desc))
-			return 0;
+			return;
 
 		max_irr = find_last_bit(
 			(unsigned long *)vmx->nested.pi_desc->pir, 256);
 
 		if (max_irr == 256)
-			return 0;
+			return;
 
 		vapic_page = kmap(vmx->nested.virtual_apic_page);
 		if (!vapic_page) {
@@ -4772,7 +4772,6 @@ static int vmx_complete_nested_posted_in
 			vmcs_write16(GUEST_INTR_STATUS, status);
 		}
 	}
-	return 0;
 }
 
 static inline bool kvm_vcpu_trigger_posted_interrupt(struct kvm_vcpu *vcpu)
@@ -10493,7 +10492,8 @@ static int vmx_check_nested_events(struc
 		return 0;
 	}
 
-	return vmx_complete_nested_posted_interrupt(vcpu);
+	vmx_complete_nested_posted_interrupt(vcpu);
+	return 0;
 }
 
 static u32 vmx_get_preemption_timer_value(struct kvm_vcpu *vcpu)


Patches currently in stable-queue which might be from david@redhat.com are

queue-4.9/kvm-nvmx-eliminate-vmcs02-pool.patch
queue-4.9/kvm-nvmx-vmx_complete_nested_posted_interrupt-can-t-fail.patch