diff mbox series

[RFC,5/7] KVM: Move vtime accounting of guest exit to separate helper

Message ID 20210413182933.1046389-6-seanjc@google.com (mailing list archive)
State New, archived
Headers show
Series KVM: Fix tick-based vtime accounting on x86 | expand

Commit Message

Sean Christopherson April 13, 2021, 6:29 p.m. UTC 
Provide a standalone helper for guest exit vtime accounting so that x86
can defer tick-based accounting until the appropriate time, while still
updating context tracking immediately after VM-Exit.

No functional change intended.

Signed-off-by: Sean Christopherson <seanjc@google.com>
---
 include/linux/kvm_host.h | 11 ++++++++---
 1 file changed, 8 insertions(+), 3 deletions(-)
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Patch

diff --git a/include/linux/kvm_host.h b/include/linux/kvm_host.h
index 444d5f0225cb..20604bfae5a8 100644
--- a/include/linux/kvm_host.h
+++ b/include/linux/kvm_host.h
@@ -358,16 +358,21 @@  static __always_inline void guest_enter_irqoff(void)
 	}
 }
 
-static __always_inline void guest_exit_irqoff(void)
+static __always_inline void kvm_vtime_account_guest_exit(void)
 {
-	context_tracking_guest_exit_irqoff();
-
 	instrumentation_begin();
 	/* Flush the guest cputime we spent on the guest */
 	vtime_account_guest_exit();
 	instrumentation_end();
 }
 
+static __always_inline void guest_exit_irqoff(void)
+{
+	context_tracking_guest_exit_irqoff();
+
+	kvm_vtime_account_guest_exit();
+}
+
 static inline void guest_exit(void)
 {
 	unsigned long flags;