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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>,
	Frederic Weisbecker <frederic@kernel.org>
Subject: [PATCH v4 1/8] context_tracking: Move guest exit context tracking to separate helpers
Date: Tue,  4 May 2021 17:27:28 -0700	[thread overview]
Message-ID: <20210505002735.1684165-2-seanjc@google.com> (raw)
In-Reply-To: <20210505002735.1684165-1-seanjc@google.com>

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: Michael Tokarev <mjt@tls.msk.ru>
Cc: Christian Borntraeger <borntraeger@de.ibm.com>
Cc: Frederic Weisbecker <frederic@kernel.org>
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..b8c7313495a7 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(void)
 {
 	if (context_tracking_enabled())
 		__context_tracking_exit(CONTEXT_GUEST);
+}
+
+static __always_inline void guest_exit_irqoff(void)
+{
+	context_tracking_guest_exit();
 
 	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(void) { }
+
 static __always_inline void guest_exit_irqoff(void)
 {
 	instrumentation_begin();
-- 
2.31.1.527.g47e6f16901-goog


  reply	other threads:[~2021-05-05  0:27 UTC|newest]

Thread overview: 18+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-05-05  0:27 [PATCH v4 0/8] KVM: Fix tick-based accounting for x86 guests Sean Christopherson
2021-05-05  0:27 ` Sean Christopherson [this message]
2021-05-06 12:14   ` [tip: x86/urgent] context_tracking: Move guest exit context tracking to separate helpers tip-bot2 for Wanpeng Li
2021-05-05  0:27 ` [PATCH v4 2/8] context_tracking: Move guest exit vtime accounting " Sean Christopherson
2021-05-06 12:14   ` [tip: x86/urgent] " tip-bot2 for Wanpeng Li
2021-05-05  0:27 ` [PATCH v4 3/8] KVM: x86: Defer vtime accounting 'til after IRQ handling Sean Christopherson
2021-05-05 20:14   ` Thomas Gleixner
2021-05-06 12:14   ` [tip: x86/urgent] " tip-bot2 for Wanpeng Li
2021-05-05  0:27 ` [PATCH v4 4/8] sched/vtime: Move vtime accounting external declarations above inlines Sean Christopherson
2021-05-06 12:14   ` [tip: x86/urgent] " tip-bot2 for Sean Christopherson
2021-05-05  0:27 ` [PATCH v4 5/8] sched/vtime: Move guest enter/exit vtime accounting to vtime.h Sean Christopherson
2021-05-06 12:14   ` [tip: x86/urgent] " tip-bot2 for Sean Christopherson
2021-05-05  0:27 ` [PATCH v4 6/8] context_tracking: Consolidate guest enter/exit wrappers Sean Christopherson
2021-05-06 12:14   ` [tip: x86/urgent] " tip-bot2 for Sean Christopherson
2021-05-05  0:27 ` [PATCH v4 7/8] context_tracking: KVM: Move guest enter/exit wrappers to KVM's domain Sean Christopherson
2021-05-06 12:14   ` [tip: x86/urgent] " tip-bot2 for Sean Christopherson
2021-05-05  0:27 ` [PATCH v4 8/8] KVM: x86: Consolidate guest enter/exit logic to common helpers Sean Christopherson
2021-05-06 12:14   ` [tip: x86/urgent] " tip-bot2 for Sean Christopherson

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