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Subject[PATCH v3 1/9] context_tracking: Move guest exit context tracking to separate helpers
From
From: Wanpeng Li <wanpengli@tencent.com>

Provide separate context tracking helpers for guest exit, the standalone
helpers will be called separately by KVM x86 in later patches to fix
tick-based accounting.

Suggested-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Sean Christopherson <seanjc@google.com>
Cc: Michael Tokarev <mjt@tls.msk.ru>
Cc: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Wanpeng Li <wanpengli@tencent.com>
Co-developed-by: Sean Christopherson <seanjc@google.com>
Signed-off-by: Sean Christopherson <seanjc@google.com>
---
include/linux/context_tracking.h | 9 ++++++++-
1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/include/linux/context_tracking.h b/include/linux/context_tracking.h
index bceb06498521..200d30cb3a82 100644
--- a/include/linux/context_tracking.h
+++ b/include/linux/context_tracking.h
@@ -131,10 +131,15 @@ static __always_inline void guest_enter_irqoff(void)
}
}

-static __always_inline void guest_exit_irqoff(void)
+static __always_inline void context_tracking_guest_exit_irqoff(void)
{
if (context_tracking_enabled())
__context_tracking_exit(CONTEXT_GUEST);
+}
+
+static __always_inline void guest_exit_irqoff(void)
+{
+ context_tracking_guest_exit_irqoff();

instrumentation_begin();
if (vtime_accounting_enabled_this_cpu())
@@ -159,6 +164,8 @@ static __always_inline void guest_enter_irqoff(void)
instrumentation_end();
}

+static __always_inline void context_tracking_guest_exit_irqoff(void) { }
+
static __always_inline void guest_exit_irqoff(void)
{
instrumentation_begin();
--
2.31.1.368.gbe11c130af-goog
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