public inbox for kvm@vger.kernel.org
 help / color / mirror / Atom feed
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>,
	kvm@vger.kernel.org,  linux-kernel@vger.kernel.org,
	ssouhlal@freebsd.org,  Suleiman Souhlal <suleiman@google.com>
Subject: [PATCH v2 3/3] KVM: x86: Document host suspend being included in steal time.
Date: Tue, 20 Aug 2024 13:35:43 +0900	[thread overview]
Message-ID: <20240820043543.837914-4-suleiman@google.com> (raw)
In-Reply-To: <20240820043543.837914-1-suleiman@google.com>

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

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
-- 
2.46.0.184.g6999bdac58-goog


  parent reply	other threads:[~2024-08-20  4:38 UTC|newest]

Thread overview: 12+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2024-08-20  4:35 [PATCH v2 0/3] KVM: x86: Include host suspended time in steal time Suleiman Souhlal
2024-08-20  4:35 ` [PATCH v2 1/3] KVM: Introduce kvm_total_suspend_ns() Suleiman Souhlal
2024-08-21  5:40   ` Chao Gao
2024-08-21  6:01     ` Suleiman Souhlal
2024-08-20  4:35 ` [PATCH v2 2/3] KVM: x86: Include host suspended time in steal time Suleiman Souhlal
2024-08-21  6:31   ` Chao Gao
2024-08-23  4:17     ` Suleiman Souhlal
2024-08-23  5:25       ` Chao Gao
2024-08-23  5:43         ` Suleiman Souhlal
2024-08-28  9:56   ` Suleiman Souhlal
2024-08-20  4:35 ` Suleiman Souhlal [this message]
2024-09-25 13:54 ` [PATCH v2 0/3] " Sean Christopherson

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=20240820043543.837914-4-suleiman@google.com \
    --to=suleiman@google.com \
    --cc=bp@alien8.de \
    --cc=chao.gao@intel.com \
    --cc=dave.hansen@linux.intel.com \
    --cc=hpa@zytor.com \
    --cc=kvm@vger.kernel.org \
    --cc=linux-kernel@vger.kernel.org \
    --cc=mingo@redhat.com \
    --cc=pbonzini@redhat.com \
    --cc=seanjc@google.com \
    --cc=ssouhlal@freebsd.org \
    --cc=tglx@linutronix.de \
    --cc=x86@kernel.org \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox