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Reply-To: Sean Christopherson <seanjc@google.com>
Date:   Thu, 15 Apr 2021 15:20:58 -0700
In-Reply-To: <20210415222106.1643837-1-seanjc@google.com>
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Subject: [PATCH v3 1/9] context_tracking: Move guest exit context tracking to
 separate helpers
From:   Sean Christopherson <seanjc@google.com>
To:     Paolo Bonzini <pbonzini@redhat.com>
Cc:     Sean Christopherson <seanjc@google.com>,
        Vitaly Kuznetsov <vkuznets@redhat.com>,
        Wanpeng Li <wanpengli@tencent.com>,
        Jim Mattson <jmattson@google.com>,
        Joerg Roedel <joro@8bytes.org>, kvm@vger.kernel.org,
        linux-kernel@vger.kernel.org, Thomas Gleixner <tglx@linutronix.de>,
        Michael Tokarev <mjt@tls.msk.ru>,
        Christian Borntraeger <borntraeger@de.ibm.com>
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Precedence: bulk

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