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From: Suleiman Souhlal <suleiman@google.com>
To: Paolo Bonzini <pbonzini@redhat.com>,
	Sean Christopherson <seanjc@google.com>
Cc: Thomas Gleixner <tglx@linutronix.de>,
	Ingo Molnar <mingo@redhat.com>, Borislav Petkov <bp@alien8.de>,
	 Dave Hansen <dave.hansen@linux.intel.com>,
	x86@kernel.org,  "H. Peter Anvin" <hpa@zytor.com>,
	Chao Gao <chao.gao@intel.com>,
	 David Woodhouse <dwmw2@infradead.org>,
	kvm@vger.kernel.org, linux-kernel@vger.kernel.org,
	 ssouhlal@freebsd.org, Suleiman Souhlal <suleiman@google.com>
Subject: [PATCH v3 3/3] KVM: x86: Document host suspend being included in steal time.
Date: Tue,  7 Jan 2025 13:22:01 +0900	[thread overview]
Message-ID: <20250107042202.2554063-4-suleiman@google.com> (raw)
In-Reply-To: <20250107042202.2554063-1-suleiman@google.com>

Steal time now includes the time that the host was suspended.

Change-Id: Ie1236bc787e0d3bc9aff0d35e6b82b7e5cc8fd91
Signed-off-by: Suleiman Souhlal <suleiman@google.com>
---
 Documentation/virt/kvm/x86/msr.rst | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/Documentation/virt/kvm/x86/msr.rst b/Documentation/virt/kvm/x86/msr.rst
index 3aecf2a70e7b43..81c17c2200ca2f 100644
--- a/Documentation/virt/kvm/x86/msr.rst
+++ b/Documentation/virt/kvm/x86/msr.rst
@@ -294,8 +294,10 @@ data:
 
 	steal:
 		the amount of time in which this vCPU did not run, in
-		nanoseconds. Time during which the vcpu is idle, will not be
-		reported as steal time.
+		nanoseconds. This includes the time during which the host is
+		suspended. However, the case where the host suspends during a
+		VM migration might not be correctly accounted. Time during
+		which the vcpu is idle, will not be reported as steal time.
 
 	preempted:
 		indicate the vCPU who owns this struct is running or
-- 
2.47.1.613.gc27f4b7a9f-goog


  parent reply	other threads:[~2025-01-07  4:26 UTC|newest]

Thread overview: 21+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2025-01-07  4:21 [PATCH v3 0/3] KVM: x86: Include host suspended time in steal time Suleiman Souhlal
2025-01-07  4:21 ` [PATCH v3 1/3] kvm: Introduce kvm_total_suspend_ns() Suleiman Souhlal
2025-01-07 15:27   ` Sean Christopherson
2025-01-07 16:43     ` Suleiman Souhlal
2025-01-08  7:15   ` kernel test robot
2025-01-08  8:36   ` kernel test robot
2025-01-15 21:49   ` Sean Christopherson
2025-01-17  6:35     ` Suleiman Souhlal
2025-01-17 16:52       ` Sean Christopherson
2025-01-21  5:37         ` Suleiman Souhlal
2025-01-21 20:22           ` Sean Christopherson
2025-02-04  7:58             ` Suleiman Souhlal
2025-02-05  5:55               ` Suleiman Souhlal
2025-02-06  1:29                 ` Sean Christopherson
2025-02-13  3:56                   ` Suleiman Souhlal
2025-01-07  4:22 ` [PATCH v3 2/3] KVM: x86: Include host suspended time in steal time Suleiman Souhlal
2025-01-07 15:37   ` Sean Christopherson
2025-01-08  4:05     ` Suleiman Souhlal
2025-01-08 15:17       ` Sean Christopherson
2025-01-07  4:22 ` Suleiman Souhlal [this message]
2025-01-07 15:37   ` [PATCH v3 3/3] KVM: x86: Document host suspend being included " Sean Christopherson

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